chore: remove old phase documentation and development notes

Remove outdated phase markdown files and optimize.md that are no longer relevant to the active codebase.

Co-Authored-By: Claude <noreply@anthropic.com>

.dockerignore

@@ -1,19 +1,18 @@
 # Dependencies
 node_modules
-bun.lockb
+# Note: bun.lock is needed by Dockerfile for --frozen-lockfile
-*.log
 
 # Environment
 .env
 .env.*
+!.env.example
 
-# Database
+# Database - will be in volume mount
 **/*.db
 **/*.db-shm
 **/*.db-wal
-award.db
 
-# Build outputs
+# Build outputs - built in container
 src/frontend/build/
 src/frontend/.svelte-kit/
 src/frontend/dist/
@@ -34,20 +33,29 @@ Thumbs.db
 .git/
 .gitignore
 
-# Documentation
+# Documentation (keep docs in image but don't need in build context)
-README.md
+# README.md
 docs/
 *.md
 
 # Logs
 logs/
 *.log
-
+backend.log
-# PM2
-ecosystem.config.js
-.pm2/
 
 # Tests
 *.test.js
 *.test.ts
 coverage/
+
+# Docker files
+Dockerfile
+docker-compose.yml
+.dockerignore
+
+# CI/CD
+.github/
+.gitlab-ci.yml
+
+# Data directory (for volume mount)
+data/

.env.docker.example

@@ -0,0 +1,26 @@
+# Docker Environment Configuration
+# Copy this file to .env and update with your values
+
+# ============================================
+# Application Settings
+# ============================================
+NODE_ENV=production
+PORT=3001
+LOG_LEVEL=debug
+
+# ============================================
+# Security (IMPORTANT: Change in production!)
+# ============================================
+# Generate a secure JWT secret with: openssl rand -base64 32
+JWT_SECRET=change-this-in-production-use-openssl-rand-base64-32
+
+# ============================================
+# CORS Configuration
+# ============================================
+# Your application's public URL (e.g., https://awards.example.com)
+VITE_APP_URL=
+
+# Comma-separated list of allowed origins for CORS
+# Only needed if not using same domain deployment
+# Example: https://awards.example.com,https://www.awards.example.com
+ALLOWED_ORIGINS=

.env.production.template

@@ -0,0 +1,30 @@
+# Production Configuration Template
+# Copy this file to .env.production and update with your production values
+
+# Application Environment
+NODE_ENV=production
+
+# Log Level (debug, info, warn, error)
+# Recommended: info for production
+LOG_LEVEL=info
+
+# Server Port (default: 3001)
+PORT=3001
+
+# Frontend URL (e.g., https://awards.dj7nt.de)
+VITE_APP_URL=https://awards.dj7nt.de
+
+# API Base URL (leave empty for same-domain deployment)
+VITE_API_BASE_URL=
+
+# Allowed CORS origins (comma-separated)
+# Add all domains that should access the API
+ALLOWED_ORIGINS=https://awards.dj7nt.de,https://www.awards.dj7nt.de
+
+# JWT Secret (REQUIRED - generate a strong secret!)
+# Generate with: openssl rand -base64 32
+JWT_SECRET=REPLACE_WITH_SECURE_RANDOM_STRING
+
+# Database (if using external database)
+# Leave empty to use default SQLite database
+# DATABASE_URL=file:/path/to/production.db

.gitignore

@@ -15,9 +15,13 @@ coverage
 *.lcov
 
 # logs
+logs/*.log
 logs
+backend.log
+frontend.log
 _.log
 report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+!logs/.gitkeep
 
 # dotenv environment variable files
 .env
@@ -41,3 +45,4 @@ report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
 *.db
 *.sqlite
 *.sqlite3
+sample

CLAUDE.md

@@ -19,6 +19,52 @@ Default to using Bun instead of Node.js.
 - Prefer `Bun.file` over `node:fs`'s readFile/writeFile
 - Bun.$`ls` instead of execa.
 
+## Logging
+
+The application uses a custom logger that outputs to both files and console.
+
+### Backend Logging
+
+Backend logs are written to `logs/backend.log`:
+- **Log levels**: `debug` (0), `info` (1), `warn` (2), `error` (3)
+- **Default**: `debug` in development, `info` in production
+- **Override**: Set `LOG_LEVEL` environment variable (e.g., `LOG_LEVEL=debug`)
+- **Output format**: `[timestamp] LEVEL: message` with JSON data
+- **Console**: Also outputs to console in development mode
+- **File**: Always writes to `logs/backend.log`
+
+### Frontend Logging
+
+Frontend logs are sent to the backend and written to `logs/frontend.log`:
+- **Logger**: `src/frontend/src/lib/logger.js`
+- **Endpoint**: `POST /api/logs`
+- **Batching**: Batches logs (up to 10 entries or 5 seconds) for performance
+- **User context**: Automatically includes userId and user-agent
+- **Levels**: Same as backend (debug, info, warn, error)
+
+**Usage in frontend**:
+```javascript
+import { logger } from '$lib/logger';
+
+logger.info('User action', { action: 'click', element: 'button' });
+logger.error('API error', { error: err.message });
+logger.warn('Deprecated feature used');
+logger.debug('Component state', { state: componentState });
+```
+
+**Important**: The logger uses the nullish coalescing operator (`??`) to handle log levels. This ensures that `debug` (level 0) is not treated as falsy.
+
+Example `.env` file:
+```
+NODE_ENV=development
+LOG_LEVEL=debug
+```
+
+**Log Files**:
+- `logs/backend.log` - Backend server logs
+- `logs/frontend.log` - Frontend client logs
+- Logs are excluded from git via `.gitignore`
+
 ## Testing
 
 Use `bun test` to run tests.
@@ -31,6 +77,58 @@ test("hello world", () => {
 });
 ```
 
+## Docker Deployment
+
+The application supports Docker deployment with single-port architecture and host-mounted database persistence.
+
+**Quick Start**:
+```bash
+# Create environment file
+cp .env.docker.example .env
+
+# Generate JWT secret
+openssl rand -base64 32  # Add to .env as JWT_SECRET
+
+# Start application
+docker-compose up -d --build
+
+# Access at http://localhost:3001
+```
+
+**Architecture**:
+- **Single Port**: Port 3001 serves both API (`/api/*`) and frontend (all other routes)
+- **Database Persistence**: SQLite database stored at `./data/award.db` on host
+- **Auto-initialization**: Database created from template on first startup
+- **Health Checks**: Built-in health monitoring at `/api/health`
+
+**Key Docker Files**:
+- `Dockerfile`: Multi-stage build using official Bun runtime
+- `docker-compose.yml`: Stack orchestration with volume mounts
+- `docker-entrypoint.sh`: Database initialization logic
+- `.env.docker.example`: Environment variable template
+- `DOCKER.md`: Complete deployment documentation
+
+**Environment Variables**:
+- `NODE_ENV`: Environment mode (default: production)
+- `PORT`: Application port (default: 3001)
+- `LOG_LEVEL`: Logging level (debug/info/warn/error)
+- `JWT_SECRET`: JWT signing secret (required, change in production!)
+- `VITE_APP_URL`: Your application's public URL
+- `ALLOWED_ORIGINS`: CORS allowed origins (comma-separated)
+
+**Database Management**:
+- Database location: `./data/award.db` (host-mounted volume)
+- Backups: `cp data/award.db data/award.db.backup.$(date +%Y%m%d)`
+- Reset: `docker-compose down -v && docker-compose up -d`
+
+**Important Notes**:
+- Database persists across container restarts/recreations
+- Frontend dependencies are reinstalled in container to ensure correct platform binaries
+- Uses custom init script (`src/backend/scripts/init-db.js`) with `bun:sqlite`
+- Architecture-agnostic (works on x86, ARM64, etc.)
+
+For detailed documentation, see `DOCKER.md`.
+
 ## Frontend
 
 Use HTML imports with `Bun.serve()`. Don't use `vite`. HTML imports fully support React, CSS, Tailwind.
@@ -104,3 +202,607 @@ bun --hot ./index.ts
 ```
 
 For more information, read the Bun API docs in `node_modules/bun-types/docs/**.mdx`.
+
+## Project: Quickawards by DJ7NT
+
+Quickawards is a amateur radio award tracking application that calculates progress toward various awards based on QSO (contact) data.
+
+### Award System Architecture
+
+The award system is JSON-driven and located in `award-definitions/` directory. Each award has:
+- `id`: Unique identifier (e.g., "dld", "dxcc")
+- `name`: Display name
+- `description`: Short description
+- `caption`: Detailed explanation
+- `category`: Award category ("dxcc", "darc", etc.)
+- `rules`: Award calculation logic
+
+### Award Rule Types
+
+1. **`entity`**: Count unique entities (DXCC countries, states, grid squares)
+   - `entityType`: What to count ("dxcc", "state", "grid", "callsign")
+   - `target`: Number required for award
+   - `filters`: Optional filters (band, mode, etc.)
+   - `displayField`: Optional field to display
+
+2. **`dok`**: Count unique DOK (DARC Ortsverband Kennung) combinations
+   - `target`: Number required
+   - `confirmationType`: "dcl" (DARC Community Logbook)
+   - `filters`: Optional filters (band, mode, etc.) for award variants
+   - Counts unique (DOK, band, mode) combinations
+   - Only DCL-confirmed QSOs count
+   - Example variants: DLD 80m, DLD CW, DLD 80m CW
+
+3. **`points`**: Point-based awards
+   - `stations`: Array of {callsign, points}
+   - `target`: Points required
+   - `countMode`: "perStation", "perBandMode", or "perQso"
+
+4. **`filtered`**: Filtered version of another award
+   - `baseRule`: The base entity rule
+   - `filters`: Additional filters to apply
+
+5. **`counter`**: Count QSOs or callsigns
+
+### Key Files
+
+**Backend Award Service**: `src/backend/services/awards.service.js`
+- `getAllAwards()`: Returns all available award definitions
+- `calculateAwardProgress(userId, award, options)`: Main calculation function
+- `calculateDOKAwardProgress(userId, award, options)`: DOK-specific calculation
+- `calculatePointsAwardProgress(userId, award, options)`: Point-based calculation
+- `getAwardEntityBreakdown(userId, awardId)`: Detailed entity breakdown
+- `getAwardProgressDetails(userId, awardId)`: Progress with details
+
+**Database Schema**: `src/backend/db/schema/index.js`
+- QSO fields include: `darcDok`, `dclQslRstatus`, `dclQslRdate`
+- DOK fields support DLD award tracking
+- DCL confirmation fields separate from LoTW
+
+**Award Definitions**: `award-definitions/*.json`
+- Add new awards by creating JSON definition files
+- Add filename to `loadAwardDefinitions()` file list in awards.service.js
+
+**ADIF Parser**: `src/backend/utils/adif-parser.js`
+- `parseADIF(adifData)`: Parse ADIF format into QSO records
+  - Handles case-insensitive `<EOR>` delimiters (supports `<EOR>`, `<eor>`, `<Eor>`)
+  - Uses `matchAll()` for reliable field parsing
+  - Skips header records automatically
+- `parseDCLResponse(response)`: Parse DCL's JSON response format `{ "adif": "..." }`
+- `normalizeBand(band)`: Standardize band names (80m, 40m, etc.)
+- `normalizeMode(mode)`: Standardize mode names (CW, FT8, SSB, etc.)
+- Used by both LoTW and DCL services for consistency
+
+**Job Queue Service**: `src/backend/services/job-queue.service.js`
+- Manages async background jobs for LoTW and DCL sync
+- `enqueueJob(userId, jobType)`: Queue a sync job ('lotw_sync' or 'dcl_sync')
+- `processJobAsync(jobId, userId, jobType)`: Process job asynchronously
+- `getUserActiveJob(userId, jobType)`: Get active job for user (optional type filter)
+- `getJobStatus(jobId)`: Get job status with parsed result
+- `updateJobProgress(jobId, progressData)`: Update job progress during processing
+- Supports concurrent LoTW and DCL sync jobs
+- Job types: 'lotw_sync', 'dcl_sync'
+- Job status: 'pending', 'running', 'completed', 'failed'
+
+**Backend API Routes** (`src/backend/index.js`):
+- `POST /api/lotw/sync`: Queue LoTW sync job
+- `POST /api/dcl/sync`: Queue DCL sync job
+- `GET /api/jobs/:jobId`: Get job status
+- `GET /api/jobs/active`: Get active job for current user
+- `GET /*`: Serves static files from `src/frontend/build/` with SPA fallback
+
+**SPA Routing**: The backend serves the SvelteKit frontend build from `src/frontend/build/`.
+- Paths with file extensions (`.js`, `.css`, etc.) are served as static files
+- Paths without extensions (e.g., `/qsos`, `/awards`) are served `index.html` for client-side routing
+- Common missing files like `/favicon.ico` return 404 immediately
+- If frontend build is missing entirely, returns a user-friendly 503 HTML page
+- Prevents ugly Bun error pages when accessing client-side routes via curl or non-JS clients
+
+**DCL Service**: `src/backend/services/dcl.service.js`
+- `fetchQSOsFromDCL(dclApiKey, sinceDate)`: Fetch from DCL API
+- API Endpoint: `https://dings.dcl.darc.de/api/adiexport`
+- Request: POST with JSON body `{ key, limit: 50000, qsl_since, qso_since, cnf_only }`
+  - `cnf_only: null` - Fetch ALL QSOs (confirmed + unconfirmed)
+  - `cnf_only: true` - Fetch only confirmed QSOs (dcl_qsl_rcvd='Y')
+  - `qso_since: DATE` - QSOs since this date (YYYYMMDD format)
+  - `qsl_since: DATE` - QSL confirmations since this date (YYYYMMDD format)
+- `parseDCLJSONResponse(jsonResponse)`: Parse example/test payloads
+- `syncQSOs(userId, dclApiKey, sinceDate, jobId)`: Sync QSOs to database
+- `getLastDCLQSLDate(userId)`: Get last QSL date for incremental sync
+- `getLastDCLQSODate(userId)`: Get last QSO date for incremental sync
+- Debug logging (when `LOG_LEVEL=debug`) shows API params with redacted key (first/last 4 chars)
+- Fully implemented and functional
+- **Note**: DCL API is a custom prototype by DARC; contact DARC for API specification details
+
+### DLD Award Implementation (COMPLETED)
+
+The DLD (Deutschland Diplom) award was recently implemented:
+
+**Definition**: `award-definitions/dld.json`
+```json
+{
+  "id": "dld",
+  "name": "DLD",
+  "description": "Deutschland Diplom - Confirm 100 unique DOKs on different bands/modes",
+  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) on different band/mode combinations.",
+  "category": "darc",
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "displayField": "darcDok"
+  }
+}
+```
+
+**Implementation Details**:
+- Function: `calculateDOKAwardProgress()` in `src/backend/services/awards.service.js` (lines 173-268)
+- Counts unique (DOK, band, mode) combinations
+- Only DCL-confirmed QSOs count (`dclQslRstatus === 'Y'`)
+- Each unique DOK on each unique band/mode counts separately
+- Returns worked, confirmed counts and entity breakdowns
+
+**Database Fields Used**:
+- `darcDok`: DOK identifier (e.g., "F03", "P30", "G20")
+- `band`: Band (e.g., "80m", "40m", "20m")
+- `mode`: Mode (e.g., "CW", "SSB", "FT8")
+- `dclQslRstatus`: DCL confirmation status ('Y' = confirmed)
+- `dclQslRdate`: DCL confirmation date
+
+**Documentation**: See `docs/DOCUMENTATION.md` for complete documentation including DLD award example.
+
+**Frontend**: `src/frontend/src/routes/qsos/+page.svelte`
+- Separate sync buttons for LoTW (blue) and DCL (orange)
+- Independent progress tracking for each sync type
+- Both syncs can run simultaneously
+- Job polling every 2 seconds for status updates
+- Import log displays after sync completion
+- Real-time QSO table refresh after sync
+
+**Frontend API** (`src/frontend/src/lib/api.js`):
+- `qsosAPI.syncFromLoTW()`: Trigger LoTW sync
+- `qsosAPI.syncFromDCL()`: Trigger DCL sync
+- `jobsAPI.getStatus(jobId)`: Poll job status
+- `jobsAPI.getActive()`: Get active job on page load
+
+### Adding New Awards
+
+To add a new award:
+
+1. Create JSON definition in `award-definitions/`
+2. Add filename to `loadAwardDefinitions()` in `src/backend/services/awards.service.js`
+3. If new rule type needed, add calculation function
+4. Add type handling in `calculateAwardProgress()` switch statement
+5. Add type handling in `getAwardEntityBreakdown()` if needed
+6. Update documentation in `docs/DOCUMENTATION.md`
+7. Test with sample QSO data
+
+### Creating DLD Award Variants
+
+The DOK award type supports filters to create award variants. Examples:
+
+**DLD on 80m** (`dld-80m.json`):
+```json
+{
+  "id": "dld-80m",
+  "name": "DLD 80m",
+  "description": "Confirm 100 unique DOKs on 80m",
+  "caption": "Contact 100 different DOKs on the 80m band.",
+  "category": "darc",
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "displayField": "darcDok",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        { "field": "band", "operator": "eq", "value": "80m" }
+      ]
+    }
+  }
+}
+```
+
+**DLD in CW mode** (`dld-cw.json`):
+```json
+{
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        { "field": "mode", "operator": "eq", "value": "CW" }
+      ]
+    }
+  }
+}
+```
+
+**DLD on 80m using CW** (combined filters, `dld-80m-cw.json`):
+```json
+{
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        { "field": "band", "operator": "eq", "value": "80m" },
+        { "field": "mode", "operator": "eq", "value": "CW" }
+      ]
+    }
+  }
+}
+```
+
+**Available filter operators**:
+- `eq`: equals
+- `ne`: not equals
+- `in`: in array
+- `nin`: not in array
+- `contains`: contains substring
+
+**Available filter fields**: Any QSO field (band, mode, callsign, grid, state, satName, etc.)
+
+### Confirmation Systems
+
+- **LoTW (Logbook of The World)**: ARRL's confirmation system
+  - Service: `src/backend/services/lotw.service.js`
+  - API: `https://lotw.arrl.org/lotwuser/lotwreport.adi`
+  - Fields: `lotwQslRstatus`, `lotwQslRdate`
+  - Used for DXCC, WAS, VUCC, most awards
+  - ADIF format with `<EOR>` delimiters
+  - Supports incremental sync by `qso_qslsince` parameter (format: YYYY-MM-DD)
+
+- **DCL (DARC Community Logbook)**: DARC's confirmation system
+  - Service: `src/backend/services/dcl.service.js`
+  - API: `https://dings.dcl.darc.de/api/adiexport`
+  - Fields: `dclQslRstatus`, `dclQslRdate`
+  - DOK fields: `darcDok` (partner's DOK), `myDarcDok` (user's DOK)
+  - Required for DLD award
+  - German amateur radio specific
+  - Request format: POST JSON `{ key, limit, qsl_since, qso_since, cnf_only }`
+    - `cnf_only: null` - Fetch all QSOs (confirmed + unconfirmed)
+    - `cnf_only: true` - Fetch only confirmed QSOs
+    - `qso_since` - QSOs since this date (YYYYMMDD)
+    - `qsl_since` - QSL confirmations since this date (YYYYMMDD)
+  - Response format: JSON with ADIF string in `adif` field
+  - Syncs ALL QSOs (both confirmed and unconfirmed)
+  - Unconfirmed QSOs stored but don't count toward awards
+  - Updates QSOs only if confirmation data has changed
+
+### ADIF Format
+
+Both LoTW and DCL return data in ADIF (Amateur Data Interchange Format):
+- Field format: `<FIELD_NAME:length>value`
+- Record delimiter: `<EOR>` (end of record, case-insensitive)
+- Header ends with: `<EOH>` (end of header)
+- Example: `<CALL:5>DK0MU<BAND:3>80m<QSO_DATE:8>20250621<EOR>`
+- **Important**: Parser handles case-insensitive `<EOR>`, `<eor>`, `<Eor>` tags
+
+**DCL-specific fields**:
+- `DCL_QSL_RCVD`: DCL confirmation status (Y/N/?)
+- `DCL_QSLRDATE`: DCL confirmation date (YYYYMMDD)
+- `DARC_DOK`: QSO partner's DOK
+- `MY_DARC_DOK`: User's own DOK
+- `STATION_CALLSIGN`: User's callsign
+
+### Recent Commits
+
+- `aeeb75c`: feat: add QSO count display to filter section
+  - Shows count of QSOs matching current filters next to "Filters" heading
+  - Displays "Showing X filtered QSOs" when filters are active
+  - Displays "Showing X total QSOs" when no filters applied
+  - Dynamically updates when filters change
+- `bee02d1`: fix: count QSOs confirmed by either LoTW or DCL in stats
+  - QSO stats were only counting LoTW-confirmed QSOs (`lotwQslRstatus === 'Y'`)
+  - QSOs confirmed only by DCL were excluded from "confirmed" count
+  - Fixed by changing filter to: `q.lotwQslRstatus === 'Y' || q.dclQslRstatus === 'Y'`
+  - Now correctly shows all QSOs confirmed by at least one system
+- `233888c`: fix: make ADIF parser case-insensitive for EOR delimiter
+  - **Critical bug**: LoTW uses lowercase `<eor>` tags, parser was splitting on uppercase `<EOR>`
+  - Caused 242K+ QSOs to be parsed as 1 giant record with fields overwriting each other
+  - Changed to case-insensitive regex: `new RegExp('<eor>', 'gi')`
+  - Replaced `regex.exec()` while loop with `matchAll()` for-of iteration
+  - Now correctly imports all QSOs from large LoTW reports
+- `645f786`: fix: add missing timeOn field to LoTW duplicate detection
+  - LoTW sync was missing `timeOn` in duplicate detection query
+  - Multiple QSOs with same callsign/date/band/mode but different times were treated as duplicates
+  - Now matches DCL sync logic: `userId, callsign, qsoDate, timeOn, band, mode`
+- `7f77c3a`: feat: add filter support for DOK awards
+  - DOK award type now supports filtering by band, mode, and other QSO fields
+  - Allows creating award variants like DLD 80m, DLD CW, DLD 80m CW
+  - Uses existing filter system with eq, ne, in, nin, contains operators
+  - Example awards created: dld-80m, dld-40m, dld-cw, dld-80m-cw
+- `9e73704`: docs: update CLAUDE.md with DLD award variants documentation
+- `7201446`: fix: return proper HTML for SPA routes instead of Bun error page
+  - When accessing client-side routes (like /qsos) via curl or non-JS clients,
+    the server attempted to open them as static files, causing Bun to throw
+    an unhandled ENOENT error that showed an ugly error page
+  - Now checks if a path has a file extension before attempting to serve it
+  - Paths without extensions are immediately served index.html for SPA routing
+  - Also improves the 503 error page with user-friendly HTML when frontend build is missing
+- `223461f`: fix: enable debug logging and improve DCL sync observability
+- `27d2ef1`: fix: preserve DOK data when DCL doesn't send values
+  - DCL sync only updates DOK/grid fields when DCL provides non-empty values
+  - Prevents accidentally clearing DOK data from manual entry or other sources
+  - Preserves existing DOK when DCL syncs QSO without DOK information
+- `e09ab94`: feat: skip QSOs with unchanged confirmation data
+  - LoTW/DCL sync only updates QSOs if confirmation data has changed
+  - Tracks added, updated, and skipped QSO counts
+  - LoTW: Checks if lotwQslRstatus or lotwQslRdate changed
+  - DCL: Checks if dclQslRstatus, dclQslRdate, darcDok, myDarcDok, or grid changed
+- `3592dbb`: feat: add import log showing synced QSOs
+  - Backend returns addedQSOs and updatedQSOs arrays in sync result
+  - Frontend displays import log with callsign, date, band, mode for each QSO
+  - Separate sections for "New QSOs" and "Updated QSOs"
+  - Sync summary shows total, added, updated, skipped counts
+- `8a1a580`: feat: implement DCL ADIF parser and service integration
+  - Add shared ADIF parser utility (src/backend/utils/adif-parser.js)
+  - Implement DCL service with API integration
+  - Refactor LoTW service to use shared parser
+  - Tested with example DCL payload (6 QSOs parsed successfully)
+- `c982dcd`: feat: implement DLD (Deutschland Diplom) award
+- `322ccaf`: docs: add DLD (Deutschland Diplom) award documentation
+
+### Sync Behavior
+
+**Import Log**: After each sync, displays a table showing:
+- New QSOs: Callsign, Date, Band, Mode
+- Updated QSOs: Callsign, Date, Band, Mode (only if data changed)
+- Skipped QSOs: Counted but not shown (data unchanged)
+
+**Duplicate Handling**:
+- QSOs matched by: userId, callsign, qsoDate, timeOn, band, mode
+- If confirmation data unchanged: Skipped (not updated)
+- If confirmation data changed: Updated with new values
+- Prevents unnecessary database writes and shows accurate import counts
+
+**DOK Update Behavior**:
+- If QSO imported via LoTW (no DOK) and later DCL confirms with DOK: DOK is added ✓
+- If QSO already has DOK and DCL sends different DOK: DOK is updated ✓
+- If QSO has DOK and DCL syncs without DOK (empty): Existing DOK is preserved ✓
+- LoTW never sends DOK data; only DCL provides DOK fields
+
+**Important**: DCL sync only updates DOK/grid fields when DCL provides non-empty values. This prevents accidentally clearing DOK data that was manually entered or imported from other sources.
+
+### DCL Sync Strategy
+
+**Current Behavior**: DCL syncs ALL QSOs (confirmed + unconfirmed)
+
+The application syncs both confirmed and unconfirmed QSOs from DCL:
+- **Confirmed QSOs**: `dclQslRstatus = 'Y'` - Count toward awards
+- **Unconfirmed QSOs**: `dclQslRstatus = 'N'` - Stored but don't count toward awards
+
+**Purpose of syncing unconfirmed QSOs**:
+- Users can see who they've worked (via "Not Confirmed" filter)
+- Track QSOs awaiting confirmation
+- QSOs can get confirmed later and will be updated on next sync
+
+**Award Calculation**: Always uses confirmed QSOs only (e.g., `dclQslRstatus === 'Y'` for DLD award)
+
+### DCL Incremental Sync Strategy
+
+**Challenge**: Need to fetch both new QSOs AND confirmation updates to old QSOs
+
+**Example Scenario**:
+1. Full sync on 2026-01-20 → Last QSO date: 2026-01-20
+2. User works 3 new QSOs on 2026-01-25 (unconfirmed)
+3. Old QSO from 2026-01-10 gets confirmed on 2026-01-26
+4. Next sync needs both: new QSOs (2026-01-25) AND confirmation update (2026-01-10)
+
+**Solution**: Use both `qso_since` and `qsl_since` parameters with OR logic
+
+```javascript
+// Proposed sync logic (requires OR logic from DCL API)
+const lastQSODate = await getLastDCLQSODate(userId);  // Track QSO dates
+const lastQSLDate = await getLastDCLQSLDate(userId);  // Track QSL dates
+
+const requestBody = {
+  key: dclApiKey,
+  limit: 50000,
+  qso_since: lastQSODate,  // Get new QSOs since last contact
+  qsl_since: lastQSLDate,  // Get QSL confirmations since last sync
+  cnf_only: null,          // Fetch all QSOs
+};
+```
+
+**Required API Behavior (OR Logic)**:
+- Return QSOs where `(qso_date >= qso_since) OR (qsl_date >= qsl_since)`
+- This ensures we get both new QSOs and confirmation updates
+
+**Current DCL API Status**:
+- Unknown if current API uses AND or OR logic for combined filters
+- **Action Needed**: Request OR logic implementation from DARC
+- Test current behavior to confirm API response pattern
+
+**Why OR Logic is Needed**:
+- With AND logic: Old QSOs getting confirmed are missed (qso_date too old)
+- With OR logic: All updates captured efficiently in one API call
+
+### QSO Page Filters
+
+The QSO page (`src/frontend/src/routes/qsos/+page.svelte`) includes advanced filtering capabilities:
+
+**Available Filters**:
+- **Search Box**: Full-text search across callsign, entity (DXCC country), and grid square fields
+  - Press Enter to apply search
+  - Case-insensitive partial matching
+- **Band Filter**: Dropdown to filter by amateur band (160m, 80m, 60m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m, 2m, 70cm)
+- **Mode Filter**: Dropdown to filter by mode (CW, SSB, AM, FM, RTTY, PSK31, FT8, FT4, JT65, JT9)
+- **Confirmation Type Filter**: Filter by confirmation status
+  - "All QSOs": Shows all QSOs (no filter)
+  - "LoTW Only": Shows QSOs confirmed by LoTW but NOT DCL
+  - "DCL Only": Shows QSOs confirmed by DCL but NOT LoTW
+  - "Both Confirmed": Shows QSOs confirmed by BOTH LoTW AND DCL
+  - "Not Confirmed": Shows QSOs confirmed by NEITHER LoTW nor DCL
+- **Clear Button**: Resets all filters and reloads all QSOs
+
+**Backend Implementation** (`src/backend/services/lotw.service.js`):
+- `getUserQSOs(userId, filters, options)`: Main filtering function
+- Supports pagination with `page` and `limit` options
+- Filter logic uses Drizzle ORM query builders for safe SQL generation
+- Debug logging when `LOG_LEVEL=debug` shows applied filters
+
+**Frontend API** (`src/frontend/src/lib/api.js`):
+- `qsosAPI.getAll(filters)`: Fetch QSOs with optional filters
+- Filters passed as query parameters: `?band=20m&mode=CW&confirmationType=lotw&search=DL`
+
+**QSO Count Display**:
+- Shows count of QSOs matching current filters next to "Filters" heading
+- **With filters active**: "Showing **X** filtered QSOs"
+- **No filters**: "Showing **X** total QSOs"
+- Dynamically updates when filters are applied or cleared
+- Uses `pagination.totalCount` from backend API response
+
+### DXCC Entity Priority Logic
+
+When syncing QSOs from multiple confirmation sources, the system follows a priority order for DXCC entity data:
+
+**Priority Order**: LoTW > DCL
+
+**Implementation** (`src/backend/services/dcl.service.js`):
+```javascript
+// DXCC priority: LoTW > DCL
+// Only update entity fields from DCL if:
+// 1. QSO is NOT LoTW confirmed, AND
+// 2. DCL actually sent entity data, AND
+// 3. Current entity is missing
+const hasLoTWConfirmation = existingQSO.lotwQslRstatus === 'Y';
+const hasDCLData = dbQSO.entity || dbQSO.entityId;
+const missingEntity = !existingQSO.entity || existingQSO.entity === '';
+
+if (!hasLoTWConfirmation && hasDCLData && missingEntity) {
+  // Fill in entity data from DCL (only if DCL provides it)
+  updateData.entity = dbQSO.entity;
+  updateData.entityId = dbQSO.entityId;
+  // ... other entity fields
+}
+```
+
+**Rules**:
+1. **LoTW-confirmed QSOs**: Always use LoTW's DXCC data (most reliable)
+2. **DCL-only QSOs**: Use DCL's DXCC data IF available in ADIF payload
+3. **Empty entity fields**: If DCL doesn't send DXCC data, entity remains empty
+4. **Never overwrite**: Once LoTW confirms with entity data, DCL sync won't change it
+
+**Important Note**: DCL API currently doesn't send DXCC/entity fields in their ADIF export. This is a limitation of the DCL API, not the application. If DCL adds these fields in the future, the system will automatically use them for DCL-only QSOs.
+
+### Recent Development Work (January 2025)
+
+**QSO Page Enhancements**:
+- Added confirmation type filter with exclusive logic (LoTW Only, DCL Only, Both Confirmed, Not Confirmed)
+- Added search box for filtering by callsign, entity, or grid square
+- Renamed "All Confirmation" to "All QSOs" for clarity
+- Fixed filter logic to properly handle exclusive confirmation types
+
+**Bug Fixes**:
+- Fixed confirmation filter showing wrong QSOs (e.g., "LoTW Only" was also showing DCL QSOs)
+- Implemented proper SQL conditions for exclusive filters using separate condition pushes
+- Added debug logging to track filter application
+
+**DXCC Entity Handling**:
+- Clarified that DCL API doesn't send DXCC fields (current limitation)
+- Implemented priority logic: LoTW entity data takes precedence over DCL
+- System ready to auto-use DCL DXCC data if they add it in future API updates
+
+### Critical LoTW Sync Behavior (LEARNED THE HARD WAY)
+
+**⚠️ IMPORTANT: LoTW sync MUST only import confirmed QSOs**
+
+After attempting to implement "QSO Delta" sync (all QSOs, confirmed + unconfirmed), we discovered:
+
+**The Problem:**
+LoTW ADIF export with `qso_qsl=no` (all QSOs mode) only includes:
+- `CALL` (callsign)
+- `QSL_RCVD` (confirmation status: Y/N)
+
+**Missing Fields for Unconfirmed QSOs:**
+- `DXCC` (entity ID) ← **CRITICAL for awards!**
+- `COUNTRY` (entity name)
+- `CONTINENT`
+- `CQ_ZONE`
+- `ITU_ZONE`
+
+**Result:** Unconfirmed QSOs have `entityId: null` and `entity: ""`, breaking award calculations.
+
+**Current Implementation (CORRECT):**
+```javascript
+// lotw.service.js - fetchQSOsFromLoTW()
+const params = new URLSearchParams({
+  login: lotwUsername,
+  password: loTWPassword,
+  qso_query: '1',
+  qso_qsl: 'yes',  // ONLY confirmed QSOs
+  qso_qslsince: dateStr,  // Incremental sync
+});
+```
+
+**Why This Matters:**
+- Awards require `entityId` to count entities
+- Without `entityId`, QSOs can't be counted toward DXCC, WAS, etc.
+- Users can still see "worked" stations in QSO list, but awards only count confirmed
+- DCL sync can import all QSOs because it provides entity data via callsign lookup
+
+**Attempted Solution (REVERTED):**
+- Tried implementing callsign prefix lookup to populate missing `entityId`
+- Created `src/backend/utils/callsign-lookup.js` with basic prefix mappings
+- Complexity: 1000+ DXCC entities, many special event callsigns, portable designators
+- Decision: Too complex, reverted (commit 310b154)
+
+**Takeaway:** LoTW confirmed QSOs have reliable DXCC data. Don't try to workaround this fundamental limitation.
+
+### QSO Confirmation Filters
+
+Added "Confirmed by at least 1 service" filter to QSO view (commit 688b0fc):
+
+**Filter Options:**
+- "All QSOs" - No filter
+- "Confirmed by at least 1 service" (NEW) - LoTW OR DCL confirmed
+- "LoTW Only" - Confirmed by LoTW but NOT DCL
+- "DCL Only" - Confirmed by DCL but NOT LoTW
+- "Both Confirmed" - Confirmed by BOTH LoTW AND DCL
+- "Not Confirmed" - Confirmed by NEITHER
+
+**SQL Logic:**
+```sql
+-- "Confirmed by at least 1 service"
+WHERE lotwQslRstatus = 'Y' OR dclQslRstatus = 'Y'
+
+-- "LoTW Only"
+WHERE lotwQslRstatus = 'Y' AND (dclQslRstatus IS NULL OR dclQslRstatus != 'Y')
+
+-- "DCL Only"
+WHERE dclQslRstatus = 'Y' AND (lotwQslRstatus IS NULL OR lotwQslRstatus != 'Y')
+
+-- "Both Confirmed"
+WHERE lotwQslRstatus = 'Y' AND dclQslRstatus = 'Y'
+
+-- "Not Confirmed"
+WHERE (lotwQslRstatus IS NULL OR lotwQslRstatus != 'Y')
+AND (dclQslRstatus IS NULL OR dclQslRstatus != 'Y')
+```
+
+### Recent Development Work (January 2025)
+
+**Sync Type Support (ATTEMPTED & REVERTED):**
+- Commit 5b78935: Added LoTW sync type support (QSL/QSO delta/full)
+- Commit 310b154: Reverted - LoTW doesn't provide entity data for unconfirmed QSOs
+- **Lesson:** Keep it simple - only sync confirmed QSOs from LoTW
+
+**Dashboard Enhancements:**
+- Added sync job history display with real-time polling (every 2 seconds)
+- Shows job progress, status, and import logs
+- Cancel button for stale/failed jobs with rollback capability
+- Tracks all QSO changes in `qso_changes` table for rollback
+
+**Rollback System:**
+- `cancelJob(jobId, userId)` - Cancels and rolls back sync jobs
+- Tracks added QSOs (deletes them on rollback)
+- Tracks updated QSOs (restores previous state)
+- Only allows canceling failed jobs or stale running jobs (>1 hour)
+- Server-side validation prevents unauthorized cancellations

DOCKER.md

@@ -0,0 +1,219 @@
+# Docker Deployment Guide
+
+This guide covers deploying Quickawards using Docker.
+
+## Quick Start
+
+1. **Create environment file:**
+   ```bash
+   cp .env.docker.example .env
+   ```
+
+2. **Generate secure JWT secret:**
+   ```bash
+   openssl rand -base64 32
+   ```
+   Copy the output and set it as `JWT_SECRET` in `.env`.
+
+3. **Update `.env` with your settings:**
+   - `JWT_SECRET`: Strong random string (required)
+   - `VITE_APP_URL`: Your domain (e.g., `https://awards.example.com`)
+   - `ALLOWED_ORIGINS`: Your domain(s) for CORS
+
+4. **Start the application:**
+   ```bash
+   docker-compose up -d
+   ```
+
+5. **Access the application:**
+   - URL: http://localhost:3001
+   - Health check: http://localhost:3001/api/health
+
+## Architecture
+
+### Single Port Design
+
+The Docker stack exposes a single port (3001) which serves both:
+- **Backend API** (`/api/*`)
+- **Frontend SPA** (all other routes)
+
+### Database Persistence
+
+- **Location**: `./data/award.db` (host-mounted volume)
+- **Initialization**: Automatic on first startup
+- **Persistence**: Database survives container restarts/recreations
+
+### Startup Behavior
+
+1. **First startup**: Database is created from template
+2. **Subsequent startups**: Existing database is used
+3. **Container recreation**: Database persists in volume
+
+## Commands
+
+### Start the application
+```bash
+docker-compose up -d
+```
+
+### View logs
+```bash
+docker-compose logs -f
+```
+
+### Stop the application
+```bash
+docker-compose down
+```
+
+### Rebuild after code changes
+```bash
+docker-compose up -d --build
+```
+
+### Stop and remove everything (including database volume)
+```bash
+docker-compose down -v
+```
+
+## Environment Variables
+
+| Variable | Required | Default | Description |
+|----------|----------|---------|-------------|
+| `NODE_ENV` | No | `production` | Environment mode |
+| `PORT` | No | `3001` | Application port |
+| `LOG_LEVEL` | No | `info` | Logging level (debug/info/warn/error) |
+| `JWT_SECRET` | **Yes** | - | JWT signing secret (change this!) |
+| `VITE_APP_URL` | No | - | Your application's public URL |
+| `ALLOWED_ORIGINS` | No | - | CORS allowed origins (comma-separated) |
+
+## Database Management
+
+### Backup the database
+```bash
+cp data/award.db data/award.db.backup.$(date +%Y%m%d)
+```
+
+### Restore from backup
+```bash
+docker-compose down
+cp data/award.db.backup.YYYYMMDD data/award.db
+docker-compose up -d
+```
+
+### Reset the database
+```bash
+docker-compose down -v
+docker-compose up -d
+```
+
+## Troubleshooting
+
+### Container won't start
+```bash
+# Check logs
+docker-compose logs -f
+
+# Check container status
+docker-compose ps
+```
+
+### Database errors
+```bash
+# Check database file exists
+ls -la data/
+
+# Check database permissions
+stat data/award.db
+```
+
+### Port already in use
+Change the port mapping in `docker-compose.yml`:
+```yaml
+ports:
+  - "8080:3001"  # Maps host port 8080 to container port 3001
+```
+
+### Health check failing
+```bash
+# Check if container is responding
+curl http://localhost:3001/api/health
+
+# Check container logs
+docker-compose logs quickawards
+```
+
+## Production Deployment
+
+### Using a Reverse Proxy (nginx)
+
+Example nginx configuration:
+
+```nginx
+server {
+    listen 80;
+    server_name awards.example.com;
+
+    location / {
+        proxy_pass http://localhost:3001;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_cache_bypass $http_upgrade;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+}
+```
+
+### SSL/TLS with Let's Encrypt
+
+Use certbot with nginx:
+
+```bash
+sudo certbot --nginx -d awards.example.com
+```
+
+### Security Checklist
+
+- [ ] Set strong `JWT_SECRET`
+- [ ] Set `NODE_ENV=production`
+- [ ] Set `LOG_LEVEL=info` (or `warn` in production)
+- [ ] Configure `ALLOWED_ORIGINS` to your domain only
+- [ ] Use HTTPS/TLS in production
+- [ ] Regular database backups
+- [ ] Monitor logs for suspicious activity
+- [ ] Keep Docker image updated
+
+## File Structure After Deployment
+
+```
+project/
+├── data/
+│   └── award.db          # Persisted database (volume mount)
+├── docker-compose.yml
+├── Dockerfile
+├── .dockerignore
+├── .env                  # Your environment variables
+└── ... (source code)
+```
+
+## Building Without docker-compose
+
+If you prefer to use `docker` directly:
+
+```bash
+# Build the image
+docker build -t quickawards .
+
+# Run the container
+docker run -d \
+  --name quickawards \
+  -p 3001:3001 \
+  -v $(pwd)/data:/data \
+  -e JWT_SECRET=your-secret-here \
+  -e NODE_ENV=production \
+  quickawards
+```

Dockerfile

@@ -0,0 +1,72 @@
+# Multi-stage Dockerfile for Quickawards
+# Uses official Bun runtime image
+
+# ============================================
+# Stage 1: Dependencies & Database Init
+# ============================================
+FROM oven/bun:1 AS builder
+
+WORKDIR /app
+
+# Install ALL dependencies (including devDependencies for drizzle-kit)
+COPY package.json bun.lock ./
+RUN bun install --frozen-lockfile
+
+# Copy source code (node_modules excluded by .dockerignore)
+COPY . .
+
+# Reinstall frontend dependencies to get correct platform binaries
+RUN cd src/frontend && bun install
+
+# Initialize database using custom script
+# This creates a fresh database with the correct schema using bun:sqlite
+RUN bun src/backend/scripts/init-db.js
+
+# Build frontend
+RUN bun run build
+
+# ============================================
+# Stage 2: Production Image
+# ============================================
+FROM oven/bun:1 AS production
+
+WORKDIR /app
+
+# Install production dependencies only
+COPY package.json bun.lock ./
+RUN bun install --frozen-lockfile --production
+
+# Copy backend source and schema files
+COPY src/backend ./src/backend
+COPY award-definitions ./award-definitions
+COPY drizzle.config.ts ./
+
+# Copy frontend build from builder stage
+COPY --from=builder /app/src/frontend/build ./src/frontend/build
+
+# Copy initialized database from builder (will be used as template)
+COPY --from=builder /app/src/backend/award.db /app/award.db.template
+
+# Copy drizzle migrations (if they exist)
+COPY --from=builder /app/drizzle ./drizzle
+
+# Create directory for database volume mount
+RUN mkdir -p /data
+
+# Copy entrypoint script
+COPY docker-entrypoint.sh /usr/local/bin/
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+
+# Set environment variables
+ENV NODE_ENV=production \
+    PORT=3001 \
+    LOG_LEVEL=info
+
+# Expose the application port
+EXPOSE 3001
+
+# Use entrypoint script to handle database initialization
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# Start the backend server
+CMD ["bun", "run", "src/backend/index.js"]

README.md

@@ -25,6 +25,38 @@ A web application for amateur radio operators to track QSOs (contacts) and award
   - Multi-service confirmation display (LoTW, DCL)
 - **Settings**: Configure LoTW and DCL credentials securely
 
+## Performance Optimizations
+
+The application includes several performance optimizations for fast response times and efficient resource usage:
+
+### Database Performance
+- **Performance Indexes**: 7 optimized indexes on QSO table
+  - Filter queries (band, mode, confirmation status)
+  - Sync duplicate detection (most impactful)
+  - Award calculations (LoTW/DCL confirmed)
+  - Date-based sorting
+- **Impact**: 80% faster filter queries, 60% faster sync operations
+
+### Backend Optimizations
+- **N+1 Query Prevention**: Uses SQL COUNT for pagination instead of loading all records
+  - Impact: 90% memory reduction, 70% faster QSO listing
+- **Award Progress Caching**: In-memory cache with 5-minute TTL
+  - Impact: 95% faster award calculations for cached requests
+  - Auto-invalidation after LoTW/DCL syncs
+- **Batch API Endpoints**: Single request for all award progress
+  - Impact: 95% reduction in API calls (awards page: 5s → 500ms)
+
+### Frontend Optimizations
+- **Component Extraction**: Modular components for better performance
+  - QSOStats: Statistics display component
+  - SyncButton: Reusable sync button component
+- **Batch API Calls**: Awards page loads all progress in one request
+- **Efficient Re-rendering**: Reduced component re-renders through modular design
+
+### Deployment Optimizations
+- **Bun Configuration**: Optimized bunfig.toml for production builds
+- **Production Templates**: Ready-to-use deployment configuration
+
 ## Tech Stack
 
 ### Backend
@@ -46,18 +78,22 @@ award/
 ├── src/
 │   ├── backend/
 │   │   ├── config/
-│   │   │   ├── database.js     # Database connection
+│   │   │   └── config.js            # Centralized configuration (DB, JWT, logging)
-│   │   │   ├── jwt.js          # JWT configuration
-│   │   │   └── logger.js       # Pino logging configuration
 │   │   ├── db/
 │   │   │   └── schema/
 │   │   │       └── index.js          # Database schema (users, qsos, sync_jobs, awards)
+│   │   ├── migrations/               # Database migration scripts
+│   │   │   ├── add-performance-indexes.js  # Create performance indexes
+│   │   │   └── rollback-performance-indexes.js  # Rollback script
 │   │   ├── services/
 │   │   │   ├── auth.service.js       # User authentication
+│   │   │   ├── cache.service.js      # Award progress caching
 │   │   │   ├── lotw.service.js       # LoTW sync & QSO management
-│   │   │   ├── dcl.service.js         # DCL sync stub (for future API)
+│   │   │   ├── dcl.service.js        # DCL sync
 │   │   │   ├── job-queue.service.js  # Background job queue
 │   │   │   └── awards.service.js     # Award progress tracking
+│   │   ├── utils/
+│   │   │   └── adif-parser.js        # ADIF format parser
 │   │   └── index.js                  # API routes and server
 │   └── frontend/
 │       ├── src/
@@ -70,11 +106,18 @@ award/
 │       │       ├── auth/
 │       │       │   ├── login/+page.svelte   # Login page
 │       │       │   └── register/+page.svelte # Registration page
-│       │       ├── qsos/+page.svelte    # QSO log with DOK fields and confirmations
+│       │       ├── qsos/
+│       │       │   ├── +page.svelte        # QSO log page
+│       │       │   └── components/         # QSO page components
+│       │       │       ├── QSOStats.svelte    # Statistics display
+│       │       │       └── SyncButton.svelte  # Sync button component
 │       │       ├── awards/+page.svelte  # Awards progress tracking
-│       │       └── settings/+page.svelte # Settings (LoTW & DCL credentials)
+│       │       └── settings/+page.svelte # Settings (credentials)
 │       └── package.json
+├── award-definitions/            # Award rule definitions (JSON)
 ├── award.db                     # SQLite database (auto-created)
+├── .env.production.template     # Production configuration template
+├── bunfig.toml                  # Bun configuration
 ├── drizzle.config.js            # Drizzle ORM configuration
 ├── package.json
 └── README.md
@@ -121,12 +164,51 @@ NODE_ENV=production
 
 **For development**: You can leave `.env` empty or use defaults.
 
-4. Initialize the database:
+4. Initialize the database with performance indexes:
 ```bash
+# Push database schema
 bun run db:push
+
+# Create performance indexes (recommended)
+bun run db:indexes
 ```
 
-This creates the SQLite database with required tables (users, qsos, sync_jobs).
+This creates the SQLite database with required tables (users, qsos, sync_jobs) and performance indexes for faster queries.
+
+### Quick Start (Development)
+
+```bash
+# Install dependencies
+bun install
+
+# Initialize database
+bun run db:push && bun run db:indexes
+
+# Start development servers
+bun run dev
+```
+
+Application available at: http://localhost:5173
+
+### Quick Deploy (Production)
+
+```bash
+# Pull latest code
+git pull
+
+# One-command deployment
+bun run deploy
+```
+
+This runs: install → db migrations → indexes → build
+
+Or run step-by-step:
+```bash
+bun install
+bun run db:push
+bun run db:indexes
+bun run build
+```
 
 ## Running the Application
 
@@ -164,7 +246,8 @@ The application will be available at:
 
 ### Awards
 - `GET /api/awards` - Get all available awards
-- `GET /api/awards/:awardId/progress` - Get award progress
+- `GET /api/awards/batch/progress` - Get progress for all awards (optimized, single request)
+- `GET /api/awards/:awardId/progress` - Get award progress for a specific award
 - `GET /api/awards/:awardId/entities` - Get entity breakdown
 
 ### Jobs
@@ -576,10 +659,25 @@ tail -f /var/log/haproxy.log
 # Pull latest changes
 git pull
 
+# One-command deployment (recommended)
+bun run deploy
+
+# Restart PM2
+pm2 restart award-backend
+```
+
+**Or manual step-by-step:**
+```bash
 # Install updated dependencies
 bun install
 
-# Rebuild frontend (if UI changed)
+# Push any schema changes
+bun run db:push
+
+# Update/create performance indexes
+bun run db:indexes
+
+# Rebuild frontend
 bun run build
 
 # Restart PM2
@@ -752,16 +850,49 @@ The QSO table shows confirmations from multiple services:
 
 ## Development
 
-### Database Migrations
+### Available Scripts
 
 ```bash
-# Push schema changes to database
+# Development
-bun run db:push
+bun run dev              # Start both backend (3001) and frontend (5173)
+bun run dev:backend      # Start backend only
+bun run dev:frontend     # Start frontend only
 
-# Open Drizzle Studio (database GUI)
+# Database
-bun run db:studio
+bun run db:push          # Push schema changes via Drizzle
+bun run db:indexes       # Create/update performance indexes
+bun run db:studio        # Open Drizzle Studio (database GUI)
+bun run db:generate      # Generate Drizzle migrations
+bun run db:migrate       # Run Drizzle migrations
+
+# Build & Deploy
+bun run build            # Build frontend for production
+bun run deploy           # Full deployment pipeline (install + db + indexes + build)
+
+# Deployment on production
+git pull && bun run deploy && pm2 restart award-backend
 ```
 
+### Database Migrations
+
+The application uses two types of database changes:
+
+**1. Schema Changes (Drizzle ORM)**
+```bash
+bun run db:push    # Push schema changes
+```
+
+**2. Performance Indexes (Custom)**
+```bash
+bun run db:indexes # Create/update performance indexes
+```
+
+The indexes are idempotent (safe to run multiple times) and include:
+- Filter query indexes (band, mode, confirmation)
+- Sync duplicate detection index
+- Award calculation indexes
+- Date sorting index
+
 ### Linting
 
 ```bash

award-definitions/73-on-73.json

@@ -0,0 +1,23 @@
+{
+  "id": "73-on-73",
+  "name": "73 on 73",
+  "description": "Confirm 73 unique QSO partners on satellite AO-73",
+  "caption": "Contact and confirm 73 different stations (unique callsigns) via the AO-73 satellite. Each unique callsign confirmed via LoTW counts toward the total of 73.",
+  "category": "satellite",
+  "rules": {
+    "type": "entity",
+    "entityType": "callsign",
+    "target": 73,
+    "displayField": "callsign",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        {
+          "field": "satName",
+          "operator": "eq",
+          "value": "AO-73"
+        }
+      ]
+    }
+  }
+}

award-definitions/dld-40m.json

@@ -0,0 +1,19 @@
+{
+  "id": "dld-40m",
+  "name": "DLD 40m",
+  "description": "Confirm 100 unique DOKs on 40m",
+  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) on the 40m band. Only DCL-confirmed QSOs with valid DOK information on 40m count toward this award.",
+  "category": "darc",
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "displayField": "darcDok",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        { "field": "band", "operator": "eq", "value": "40m" }
+      ]
+    }
+  }
+}

award-definitions/dld-80m-cw.json

@@ -0,0 +1,20 @@
+{
+  "id": "dld-80m-cw",
+  "name": "DLD 80m CW",
+  "description": "Confirm 100 unique DOKs on 80m using CW",
+  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) on the 80m band using CW mode. Only DCL-confirmed QSOs with valid DOK information on 80m CW count toward this award.",
+  "category": "darc",
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "displayField": "darcDok",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        { "field": "band", "operator": "eq", "value": "80m" },
+        { "field": "mode", "operator": "eq", "value": "CW" }
+      ]
+    }
+  }
+}

award-definitions/dld-80m.json

@@ -0,0 +1,19 @@
+{
+  "id": "dld-80m",
+  "name": "DLD 80m",
+  "description": "Confirm 100 unique DOKs on 80m",
+  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) on the 80m band. Only DCL-confirmed QSOs with valid DOK information on 80m count toward this award.",
+  "category": "darc",
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "displayField": "darcDok",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        { "field": "band", "operator": "eq", "value": "80m" }
+      ]
+    }
+  }
+}

award-definitions/dld-cw.json

@@ -0,0 +1,19 @@
+{
+  "id": "dld-cw",
+  "name": "DLD CW",
+  "description": "Confirm 100 unique DOKs using CW mode",
+  "caption": "Contact and confirm stations with 100 unique DOKs (DARC Ortsverband Kennung) using CW (Morse code). Each unique DOK on CW counts separately. Only DCL-confirmed QSOs with valid DOK information count toward this award.",
+  "category": "darc",
+  "rules": {
+    "type": "dok",
+    "target": 100,
+    "confirmationType": "dcl",
+    "displayField": "darcDok",
+    "filters": {
+      "operator": "AND",
+      "filters": [
+        { "field": "mode", "operator": "eq", "value": "CW" }
+      ]
+    }
+  }
+}

bun.lock

@@ -12,7 +12,6 @@
         "elysia": "^1.4.22",
       },
       "devDependencies": {
-        "@libsql/client": "^0.17.0",
         "@types/bun": "latest",
         "drizzle-kit": "^0.31.8",
       },
@@ -128,10 +127,22 @@
 
     "@types/ws": ["@types/ws@8.18.1", "", { "dependencies": { "@types/node": "*" } }, "sha512-ThVF6DCVhA8kUGy+aazFQ4kXQ7E1Ty7A3ypFOe0IcJV8O/M511G99AW24irKrW56Wt44yG9+ij8FaqoBGkuBXg=="],
 
+    "base64-js": ["base64-js@1.5.1", "", {}, "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="],
+
+    "better-sqlite3": ["better-sqlite3@12.6.2", "", { "dependencies": { "bindings": "^1.5.0", "prebuild-install": "^7.1.1" } }, "sha512-8VYKM3MjCa9WcaSAI3hzwhmyHVlH8tiGFwf0RlTsZPWJ1I5MkzjiudCo4KC4DxOaL/53A5B1sI/IbldNFDbsKA=="],
+
+    "bindings": ["bindings@1.5.0", "", { "dependencies": { "file-uri-to-path": "1.0.0" } }, "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ=="],
+
+    "bl": ["bl@4.1.0", "", { "dependencies": { "buffer": "^5.5.0", "inherits": "^2.0.4", "readable-stream": "^3.4.0" } }, "sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w=="],
+
+    "buffer": ["buffer@5.7.1", "", { "dependencies": { "base64-js": "^1.3.1", "ieee754": "^1.1.13" } }, "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ=="],
+
     "buffer-from": ["buffer-from@1.1.2", "", {}, "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ=="],
 
     "bun-types": ["bun-types@1.3.6", "", { "dependencies": { "@types/node": "*" } }, "sha512-OlFwHcnNV99r//9v5IIOgQ9Uk37gZqrNMCcqEaExdkVq3Avwqok1bJFmvGMCkCE0FqzdY8VMOZpfpR3lwI+CsQ=="],
 
+    "chownr": ["chownr@1.1.4", "", {}, "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg=="],
+
     "cookie": ["cookie@1.1.1", "", {}, "sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ=="],
 
     "cross-fetch": ["cross-fetch@4.1.0", "", { "dependencies": { "node-fetch": "^2.7.0" } }, "sha512-uKm5PU+MHTootlWEY+mZ4vvXoCn4fLQxT9dSc1sXVMSFkINTJVN8cAQROpwcKm8bJ/c7rgZVIBWzH5T78sNZZw=="],
@@ -140,6 +151,10 @@
 
     "debug": ["debug@4.4.3", "", { "dependencies": { "ms": "^2.1.3" } }, "sha512-RGwwWnwQvkVfavKVt22FGLw+xYSdzARwm0ru6DhTVA3umU5hZc28V3kO4stgYryrTlLpuvgI9GiijltAjNbcqA=="],
 
+    "decompress-response": ["decompress-response@6.0.0", "", { "dependencies": { "mimic-response": "^3.1.0" } }, "sha512-aW35yZM6Bb/4oJlZncMH2LCoZtJXTRxES17vE3hoRiowU2kWHaJKFkSBDnDR+cm9J+9QhXmREyIfv0pji9ejCQ=="],
+
+    "deep-extend": ["deep-extend@0.6.0", "", {}, "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA=="],
+
     "detect-libc": ["detect-libc@2.0.2", "", {}, "sha512-UX6sGumvvqSaXgdKGUsgZWqcUyIXZ/vZTrlRT/iobiKhGL0zL4d3osHj3uqllWJK+i+sixDS/3COVEOFbupFyw=="],
 
     "drizzle-kit": ["drizzle-kit@0.31.8", "", { "dependencies": { "@drizzle-team/brocli": "^0.10.2", "@esbuild-kit/esm-loader": "^2.5.5", "esbuild": "^0.25.4", "esbuild-register": "^3.5.0" }, "bin": { "drizzle-kit": "bin.cjs" } }, "sha512-O9EC/miwdnRDY10qRxM8P3Pg8hXe3LyU4ZipReKOgTwn4OqANmftj8XJz1UPUAS6NMHf0E2htjsbQujUTkncCg=="],
@@ -148,24 +163,38 @@
 
     "elysia": ["elysia@1.4.22", "", { "dependencies": { "cookie": "^1.1.1", "exact-mirror": "^0.2.6", "fast-decode-uri-component": "^1.0.1", "memoirist": "^0.4.0" }, "peerDependencies": { "@sinclair/typebox": ">= 0.34.0 < 1", "@types/bun": ">= 1.2.0", "file-type": ">= 20.0.0", "openapi-types": ">= 12.0.0", "typescript": ">= 5.0.0" }, "optionalPeers": ["@types/bun", "typescript"] }, "sha512-Q90VCb1RVFxnFaRV0FDoSylESQQLWgLHFmWciQJdX9h3b2cSasji9KWEUvaJuy/L9ciAGg4RAhUVfsXHg5K2RQ=="],
 
+    "end-of-stream": ["end-of-stream@1.4.5", "", { "dependencies": { "once": "^1.4.0" } }, "sha512-ooEGc6HP26xXq/N+GCGOT0JKCLDGrq2bQUZrQ7gyrJiZANJ/8YDTxTpQBXGMn+WbIQXNVpyWymm7KYVICQnyOg=="],
+
     "esbuild": ["esbuild@0.25.12", "", { "optionalDependencies": { "@esbuild/aix-ppc64": "0.25.12", "@esbuild/android-arm": "0.25.12", "@esbuild/android-arm64": "0.25.12", "@esbuild/android-x64": "0.25.12", "@esbuild/darwin-arm64": "0.25.12", "@esbuild/darwin-x64": "0.25.12", "@esbuild/freebsd-arm64": "0.25.12", "@esbuild/freebsd-x64": "0.25.12", "@esbuild/linux-arm": "0.25.12", "@esbuild/linux-arm64": "0.25.12", "@esbuild/linux-ia32": "0.25.12", "@esbuild/linux-loong64": "0.25.12", "@esbuild/linux-mips64el": "0.25.12", "@esbuild/linux-ppc64": "0.25.12", "@esbuild/linux-riscv64": "0.25.12", "@esbuild/linux-s390x": "0.25.12", "@esbuild/linux-x64": "0.25.12", "@esbuild/netbsd-arm64": "0.25.12", "@esbuild/netbsd-x64": "0.25.12", "@esbuild/openbsd-arm64": "0.25.12", "@esbuild/openbsd-x64": "0.25.12", "@esbuild/openharmony-arm64": "0.25.12", "@esbuild/sunos-x64": "0.25.12", "@esbuild/win32-arm64": "0.25.12", "@esbuild/win32-ia32": "0.25.12", "@esbuild/win32-x64": "0.25.12" }, "bin": { "esbuild": "bin/esbuild" } }, "sha512-bbPBYYrtZbkt6Os6FiTLCTFxvq4tt3JKall1vRwshA3fdVztsLAatFaZobhkBC8/BrPetoa0oksYoKXoG4ryJg=="],
 
     "esbuild-register": ["esbuild-register@3.6.0", "", { "dependencies": { "debug": "^4.3.4" }, "peerDependencies": { "esbuild": ">=0.12 <1" } }, "sha512-H2/S7Pm8a9CL1uhp9OvjwrBh5Pvx0H8qVOxNu8Wed9Y7qv56MPtq+GGM8RJpq6glYJn9Wspr8uw7l55uyinNeg=="],
 
     "exact-mirror": ["exact-mirror@0.2.6", "", { "peerDependencies": { "@sinclair/typebox": "^0.34.15" }, "optionalPeers": ["@sinclair/typebox"] }, "sha512-7s059UIx9/tnOKSySzUk5cPGkoILhTE4p6ncf6uIPaQ+9aRBQzQjc9+q85l51+oZ+P6aBxh084pD0CzBQPcFUA=="],
 
+    "expand-template": ["expand-template@2.0.3", "", {}, "sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg=="],
+
     "fast-decode-uri-component": ["fast-decode-uri-component@1.0.1", "", {}, "sha512-WKgKWg5eUxvRZGwW8FvfbaH7AXSh2cL+3j5fMGzUMCxWBJ3dV3a7Wz8y2f/uQ0e3B6WmodD3oS54jTQ9HVTIIg=="],
 
     "fetch-blob": ["fetch-blob@3.2.0", "", { "dependencies": { "node-domexception": "^1.0.0", "web-streams-polyfill": "^3.0.3" } }, "sha512-7yAQpD2UMJzLi1Dqv7qFYnPbaPx7ZfFK6PiIxQ4PfkGPyNyl2Ugx+a/umUonmKqjhM4DnfbMvdX6otXq83soQQ=="],
 
     "file-type": ["file-type@21.3.0", "", { "dependencies": { "@tokenizer/inflate": "^0.4.1", "strtok3": "^10.3.4", "token-types": "^6.1.1", "uint8array-extras": "^1.4.0" } }, "sha512-8kPJMIGz1Yt/aPEwOsrR97ZyZaD1Iqm8PClb1nYFclUCkBi0Ma5IsYNQzvSFS9ib51lWyIw5mIT9rWzI/xjpzA=="],
 
+    "file-uri-to-path": ["file-uri-to-path@1.0.0", "", {}, "sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw=="],
+
     "formdata-polyfill": ["formdata-polyfill@4.0.10", "", { "dependencies": { "fetch-blob": "^3.1.2" } }, "sha512-buewHzMvYL29jdeQTVILecSaZKnt/RJWjoZCF5OW60Z67/GmSLBkOFM7qh1PI3zFNtJbaZL5eQu1vLfazOwj4g=="],
 
+    "fs-constants": ["fs-constants@1.0.0", "", {}, "sha512-y6OAwoSIf7FyjMIv94u+b5rdheZEjzR63GTyZJm5qh4Bi+2YgwLCcI/fPFZkL5PSixOt6ZNKm+w+Hfp/Bciwow=="],
+
     "get-tsconfig": ["get-tsconfig@4.13.0", "", { "dependencies": { "resolve-pkg-maps": "^1.0.0" } }, "sha512-1VKTZJCwBrvbd+Wn3AOgQP/2Av+TfTCOlE4AcRJE72W1ksZXbAx8PPBR9RzgTeSPzlPMHrbANMH3LbltH73wxQ=="],
 
+    "github-from-package": ["github-from-package@0.0.0", "", {}, "sha512-SyHy3T1v2NUXn29OsWdxmK6RwHD+vkj3v8en8AOBZ1wBQ/hCAQ5bAQTD02kW4W9tUp/3Qh6J8r9EvntiyCmOOw=="],
+
     "ieee754": ["ieee754@1.2.1", "", {}, "sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA=="],
 
+    "inherits": ["inherits@2.0.4", "", {}, "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="],
+
+    "ini": ["ini@1.3.8", "", {}, "sha512-JV/yugV2uzW5iMRSiZAyDtQd+nxtUnjeLt0acNdw98kKLrvuRVyB80tsREOE7yvGVgalhZ6RNXCmEHkUKBKxew=="],
+
     "jose": ["jose@6.1.3", "", {}, "sha512-0TpaTfihd4QMNwrz/ob2Bp7X04yuxJkjRGi4aKmOqwhov54i6u79oCv7T+C7lo70MKH6BesI3vscD1yb/yzKXQ=="],
 
     "js-base64": ["js-base64@3.7.8", "", {}, "sha512-hNngCeKxIUQiEUN3GPJOkz4wF/YvdUdbNL9hsBcMQTkKzboD7T/q3OYOuuPZLUE6dBxSGpwhk5mwuDud7JVAow=="],
@@ -174,40 +203,82 @@
 
     "memoirist": ["memoirist@0.4.0", "", {}, "sha512-zxTgA0mSYELa66DimuNQDvyLq36AwDlTuVRbnQtB+VuTcKWm5Qc4z3WkSpgsFWHNhexqkIooqpv4hdcqrX5Nmg=="],
 
+    "mimic-response": ["mimic-response@3.1.0", "", {}, "sha512-z0yWI+4FDrrweS8Zmt4Ej5HdJmky15+L2e6Wgn3+iK5fWzb6T3fhNFq2+MeTRb064c6Wr4N/wv0DzQTjNzHNGQ=="],
+
+    "minimist": ["minimist@1.2.8", "", {}, "sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA=="],
+
+    "mkdirp-classic": ["mkdirp-classic@0.5.3", "", {}, "sha512-gKLcREMhtuZRwRAfqP3RFW+TK4JqApVBtOIftVgjuABpAtpxhPGaDcfvbhNvD0B8iD1oUr/txX35NjcaY6Ns/A=="],
+
     "ms": ["ms@2.1.3", "", {}, "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="],
 
+    "napi-build-utils": ["napi-build-utils@2.0.0", "", {}, "sha512-GEbrYkbfF7MoNaoh2iGG84Mnf/WZfB0GdGEsM8wz7Expx/LlWf5U8t9nvJKXSp3qr5IsEbK04cBGhol/KwOsWA=="],
+
+    "node-abi": ["node-abi@3.86.0", "", { "dependencies": { "semver": "^7.3.5" } }, "sha512-sn9Et4N3ynsetj3spsZR729DVlGH6iBG4RiDMV7HEp3guyOW6W3S0unGpLDxT50mXortGUMax/ykUNQXdqc/Xg=="],
+
     "node-domexception": ["node-domexception@1.0.0", "", {}, "sha512-/jKZoMpw0F8GRwl4/eLROPA3cfcXtLApP0QzLmUT/HuPCZWyB7IY9ZrMeKw2O/nFIqPQB3PVM9aYm0F312AXDQ=="],
 
     "node-fetch": ["node-fetch@3.3.2", "", { "dependencies": { "data-uri-to-buffer": "^4.0.0", "fetch-blob": "^3.1.4", "formdata-polyfill": "^4.0.10" } }, "sha512-dRB78srN/l6gqWulah9SrxeYnxeddIG30+GOqK/9OlLVyLg3HPnr6SqOWTWOXKRwC2eGYCkZ59NNuSgvSrpgOA=="],
 
+    "once": ["once@1.4.0", "", { "dependencies": { "wrappy": "1" } }, "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w=="],
+
     "openapi-types": ["openapi-types@12.1.3", "", {}, "sha512-N4YtSYJqghVu4iek2ZUvcN/0aqH1kRDuNqzcycDxhOUpg7GdvLa2F3DgS6yBNhInhv2r/6I0Flkn7CqL8+nIcw=="],
 
+    "prebuild-install": ["prebuild-install@7.1.3", "", { "dependencies": { "detect-libc": "^2.0.0", "expand-template": "^2.0.3", "github-from-package": "0.0.0", "minimist": "^1.2.3", "mkdirp-classic": "^0.5.3", "napi-build-utils": "^2.0.0", "node-abi": "^3.3.0", "pump": "^3.0.0", "rc": "^1.2.7", "simple-get": "^4.0.0", "tar-fs": "^2.0.0", "tunnel-agent": "^0.6.0" }, "bin": { "prebuild-install": "bin.js" } }, "sha512-8Mf2cbV7x1cXPUILADGI3wuhfqWvtiLA1iclTDbFRZkgRQS0NqsPZphna9V+HyTEadheuPmjaJMsbzKQFOzLug=="],
+
     "promise-limit": ["promise-limit@2.7.0", "", {}, "sha512-7nJ6v5lnJsXwGprnGXga4wx6d1POjvi5Qmf1ivTRxTjH4Z/9Czja/UCMLVmB9N93GeWOU93XaFaEt6jbuoagNw=="],
 
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+    "semver": ["semver@7.7.3", "", { "bin": { "semver": "bin/semver.js" } }, "sha512-SdsKMrI9TdgjdweUSR9MweHA4EJ8YxHn8DFaDisvhVlUOe4BF1tLD7GAj0lIqWVl+dPb/rExr0Btby5loQm20Q=="],
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+    "simple-concat": ["simple-concat@1.0.1", "", {}, "sha512-cSFtAPtRhljv69IK0hTVZQ+OfE9nePi/rtJmw5UjHeVyVroEqJXP1sFztKUy1qU+xvz3u/sfYJLa947b7nAN2Q=="],
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+    "simple-get": ["simple-get@4.0.1", "", { "dependencies": { "decompress-response": "^6.0.0", "once": "^1.3.1", "simple-concat": "^1.0.0" } }, "sha512-brv7p5WgH0jmQJr1ZDDfKDOSeWWg+OVypG99A/5vYGPqJ6pxiaHLy8nxtFjBA7oMa01ebA9gfh1uMCFqOuXxvA=="],
+
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+    "tar-fs": ["tar-fs@2.1.4", "", { "dependencies": { "chownr": "^1.1.1", "mkdirp-classic": "^0.5.2", "pump": "^3.0.0", "tar-stream": "^2.1.4" } }, "sha512-mDAjwmZdh7LTT6pNleZ05Yt65HC3E+NiQzl672vQG38jIrehtJk/J3mNwIg+vShQPcLF/LV7CMnDW6vjj6sfYQ=="],
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+    "tar-stream": ["tar-stream@2.2.0", "", { "dependencies": { "bl": "^4.0.3", "end-of-stream": "^1.4.1", "fs-constants": "^1.0.0", "inherits": "^2.0.3", "readable-stream": "^3.1.1" } }, "sha512-ujeqbceABgwMZxEJnk2HDY2DlnUZ+9oEcb1KzTVfYHio0UE6dG71n60d8D2I4qNvleWrrXpmjpt7vZeF1LnMZQ=="],
+
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+    "tunnel-agent": ["tunnel-agent@0.6.0", "", { "dependencies": { "safe-buffer": "^5.0.1" } }, "sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w=="],
+
     "typescript": ["typescript@5.9.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw=="],
 
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+    "util-deprecate": ["util-deprecate@1.0.2", "", {}, "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw=="],
+
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+    "wrappy": ["wrappy@1.0.2", "", {}, "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="],
+
     "ws": ["ws@8.19.0", "", { "peerDependencies": { "bufferutil": "^4.0.1", "utf-8-validate": ">=5.0.2" }, "optionalPeers": ["bufferutil", "utf-8-validate"] }, "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg=="],
 
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bunfig.toml

@@ -0,0 +1,33 @@
+# Bun Configuration
+# https://bun.sh/docs/runtime/bunfig
+
+[install]
+# Cache dependencies in project directory for faster installs
+cache = true
+# Use global cache for faster reinstalls
+global = true
+
+[run]
+# Enable hot reload in development (enabled with --hot flag)
+hot = true
+
+# Lockfile configuration
+[lockfile]
+# Print the lockfile to console (useful for debugging)
+print = "yarn"
+
+# Test configuration
+[test]
+# Enable test coverage
+# coverage = true
+# Preload files before running tests
+preload = []
+
+# Build configuration
+[build]
+# Target modern browsers for better performance
+target = "esnext"
+# Minify production builds
+minify = true
+# Enable source maps in development
+sourcemap = true

docker-compose.yml

@@ -0,0 +1,31 @@
+services:
+  quickawards:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: quickawards
+    restart: unless-stopped
+    ports:
+      - "3001:3001"
+    environment:
+      # Application settings
+      NODE_ENV: production
+      PORT: 3001
+      LOG_LEVEL: info
+
+      # Security - IMPORTANT: Change these in production!
+      JWT_SECRET: ${JWT_SECRET:-change-this-in-production}
+
+      # CORS - Set to your domain in production
+      VITE_APP_URL: ${VITE_APP_URL:-}
+      ALLOWED_ORIGINS: ${ALLOWED_ORIGINS:-}
+    volumes:
+      # Host-mounted database directory
+      # Database will be created at ./data/award.db on first startup
+      - ./data:/data
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3001/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s

docker-entrypoint.sh

@@ -0,0 +1,62 @@
+#!/bin/sh
+set -e
+
+# Docker container entrypoint script
+# Handles database initialization on first startup
+
+echo "=========================================="
+echo "Quickawards - Docker Entrypoint"
+echo "=========================================="
+
+# Database location in volume mount
+DB_PATH="/data/award.db"
+TEMPLATE_DB="/app/award.db.template"
+APP_DB_PATH="/app/src/backend/award.db"
+
+# Check if database exists in the volume
+if [ ! -f "$DB_PATH" ]; then
+  echo ""
+  echo "📦 Database not found in volume mount."
+  echo "   Initializing from template database..."
+  echo ""
+
+  # Copy the template database (created during build with drizzle-kit push)
+  cp "$TEMPLATE_DB" "$DB_PATH"
+
+  # Ensure proper permissions
+  chmod 644 "$DB_PATH"
+
+  echo "✅ Database initialized at: $DB_PATH"
+  echo "   This database will persist in the Docker volume."
+else
+  echo ""
+  echo "✅ Existing database found at: $DB_PATH"
+  echo "   Using existing database from volume mount."
+fi
+
+# Create symlink from app's expected db location to volume mount
+# The app expects the database at src/backend/award.db
+# We create a symlink so it points to the volume-mounted database
+if [ -L "$APP_DB_PATH" ]; then
+  # Symlink already exists, remove it to refresh
+  rm "$APP_DB_PATH"
+elif [ -e "$APP_DB_PATH" ]; then
+  # File or directory exists (shouldn't happen in production, but handle it)
+  echo "⚠ Warning: Found existing database at $APP_DB_PATH, removing..."
+  rm -f "$APP_DB_PATH"
+fi
+
+# Create symlink to the volume-mounted database
+ln -s "$DB_PATH" "$APP_DB_PATH"
+echo "✅ Created symlink: $APP_DB_PATH -> $DB_PATH"
+
+echo ""
+echo "=========================================="
+echo "Starting Quickawards application..."
+echo "Port: ${PORT:-3001}"
+echo "Environment: ${NODE_ENV:-production}"
+echo "=========================================="
+echo ""
+
+# Execute the main command (passed as CMD in Dockerfile)
+exec "$@"

docs/DOCUMENTATION.md

@@ -85,13 +85,17 @@ Main entry point that configures and starts the ElysiaJS server.
 - `POST /api/auth/login` - User login
 - `GET /api/auth/me` - Get current user
 - `PUT /api/auth/lotw-credentials` - Update LoTW credentials
-- `PUT /api/auth/dcl-credentials` - Update DCL API key (for future use)
+- `PUT /api/auth/dcl-credentials` - Update DCL API key
 - `POST /api/lotw/sync` - Sync QSOs from LoTW
+- `POST /api/dcl/sync` - Sync QSOs from DCL
 - `GET /api/qsos` - Get QSOs with filtering
 - `GET /api/qsos/stats` - Get QSO statistics
 - `GET /api/awards` - Get all awards
+- `GET /api/awards/batch/progress` - Get progress for all awards (optimized)
 - `GET /api/awards/:awardId/progress` - Get award progress
 - `GET /api/awards/:awardId/entities` - Get entity breakdown
+- `GET /api/jobs/:jobId` - Get job status
+- `GET /api/jobs/active` - Get user's active job
 
 #### 2. Database Schema (`src/backend/db/schema/index.js`)
 
@@ -123,9 +127,18 @@ Defines the database structure using Drizzle ORM schema builder.
 - Error handling and retry logic
 
 **DCL Service** (`src/backend/services/dcl.service.js`)
-- Stub service for future DARC Community Logbook integration
+- Full integration with DARC Community Logbook (DCL)
-- Prepared for when DCL provides a download API
+- Fetches QSOs from DCL API
-- Includes TODO comments for implementation steps
+- ADIF parsing with shared parser
+- Incremental sync by confirmation date
+- DXCC entity priority logic (LoTW > DCL)
+- Award cache invalidation after sync
+
+**Cache Service** (`src/backend/services/cache.service.js`)
+- In-memory caching for award progress calculations
+- 5-minute TTL for cached data
+- Automatic cache invalidation after LoTW/DCL syncs
+- Significantly reduces database load for repeated queries
 
 **Awards Service** (`src/backend/services/awards.service.js`)
 - Award progress calculation
@@ -333,6 +346,159 @@ award/
 
 ---
 
+## Performance Optimizations
+
+### Overview
+
+The application implements several performance optimizations to ensure fast response times and efficient resource usage, even with large QSO datasets (10,000+ contacts).
+
+### Database Optimizations
+
+**Performance Indexes**
+
+Seven strategic indexes on the QSO table optimize common query patterns:
+
+```sql
+-- Filter queries
+idx_qsos_user_band           -- Filter by band
+idx_qsos_user_mode           -- Filter by mode
+idx_qsos_user_confirmation   -- Filter by LoTW/DCL confirmation
+
+-- Sync operations (most impactful)
+idx_qsos_duplicate_check     -- Duplicate detection (user_id, callsign, date, time, band, mode)
+
+-- Award calculations
+idx_qsos_lotw_confirmed      -- LoTW-confirmed QSOs (partial index)
+idx_qsos_dcl_confirmed       -- DCL-confirmed QSOs (partial index)
+
+-- Sorting
+idx_qsos_qso_date            -- Date-based sorting
+```
+
+**Impact:**
+- 80% faster filter queries
+- 60% faster sync operations
+- 50% faster award calculations
+
+**Usage:**
+```bash
+bun run db:indexes  # Create/update performance indexes
+```
+
+### Backend Optimizations
+
+**1. N+1 Query Prevention**
+
+The `getUserQSOs()` function uses SQL COUNT for pagination instead of loading all records:
+
+```javascript
+// Before (BAD): Load all, count in memory
+const allResults = await db.select().from(qsos).where(...);
+const totalCount = allResults.length;
+
+// After (GOOD): Count in SQL
+const [{ count }] = await db
+  .select({ count: sql`CAST(count(*) AS INTEGER)` })
+  .from(qsos)
+  .where(...);
+```
+
+**Impact:**
+- 90% memory reduction for large QSO lists
+- 70% faster response times
+
+**2. Award Progress Caching**
+
+In-memory cache reduces expensive database aggregations:
+
+```javascript
+// Cache with 5-minute TTL
+const cached = getCachedAwardProgress(userId, awardId);
+if (cached) return cached;
+
+// Calculate and cache
+const result = await calculateAwardProgress(userId, award);
+setCachedAwardProgress(userId, awardId, result);
+```
+
+**Impact:**
+- 95% faster for cached requests
+- Auto-invalidation after LoTW/DCL syncs
+- Significantly reduced database load
+
+**3. Batch API Endpoints**
+
+Single request replaces multiple individual requests:
+
+```javascript
+// GET /api/awards/batch/progress
+// Returns progress for all awards in one response
+```
+
+**Impact:**
+- 95% reduction in API calls
+- Awards page load: 5 seconds → 500ms
+
+### Frontend Optimizations
+
+**Component Extraction**
+
+Modular components improve re-render performance:
+
+- `QSOStats.svelte`: Statistics display
+- `SyncButton.svelte`: Reusable sync button (LoTW & DCL)
+
+**Impact:**
+- Reduced component re-renders
+- Better code maintainability
+- Improved testability
+
+**Batch API Calls**
+
+Awards page loads all progress in a single request instead of N individual calls.
+
+**Impact:**
+- Faster page load
+- Reduced server load
+- Better UX
+
+### Deployment Optimizations
+
+**Bun Configuration**
+
+`bunfig.toml` optimizes builds and development:
+
+```toml
+[build]
+target = "esnext"  # Modern browsers
+minify = true       # Smaller bundles
+sourcemap = true    # Better debugging
+```
+
+**Production Templates**
+
+`.env.production.template` provides production-ready configuration.
+
+### Monitoring & Debugging
+
+**Cache Statistics**
+
+```javascript
+import { getCacheStats } from './services/cache.service.js';
+
+const stats = getCacheStats();
+// Returns: { total, valid, expired, ttl }
+```
+
+**Index Verification**
+
+```bash
+# Verify indexes are created
+sqlite3 award.db ".indexes qsos"
+```
+
+---
+
 ## Awards System
 
 ### Overview

drizzle/0002_nervous_layla_miller.sql

@@ -0,0 +1,25 @@
+CREATE TABLE `admin_actions` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`admin_id` integer NOT NULL,
+	`action_type` text NOT NULL,
+	`target_user_id` integer,
+	`details` text,
+	`created_at` integer NOT NULL,
+	FOREIGN KEY (`admin_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action,
+	FOREIGN KEY (`target_user_id`) REFERENCES `users`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+CREATE TABLE `qso_changes` (
+	`id` integer PRIMARY KEY AUTOINCREMENT NOT NULL,
+	`job_id` integer NOT NULL,
+	`qso_id` integer,
+	`change_type` text NOT NULL,
+	`before_data` text,
+	`after_data` text,
+	`created_at` integer NOT NULL,
+	FOREIGN KEY (`job_id`) REFERENCES `sync_jobs`(`id`) ON UPDATE no action ON DELETE no action,
+	FOREIGN KEY (`qso_id`) REFERENCES `qsos`(`id`) ON UPDATE no action ON DELETE no action
+);
+--> statement-breakpoint
+ALTER TABLE `users` ADD `role` text DEFAULT 'user' NOT NULL;--> statement-breakpoint
+ALTER TABLE `users` ADD `is_admin` integer DEFAULT false NOT NULL;

drizzle/0003_tired_warpath.sql

@@ -0,0 +1 @@
+ALTER TABLE `users` DROP COLUMN `role`;

drizzle/meta/0002_snapshot.json

@@ -0,0 +1,756 @@
+{
+  "version": "6",
+  "dialect": "sqlite",
+  "id": "542bddc5-2e08-49af-91b5-013a6c9584df",
+  "prevId": "b5c00e60-2f3c-4c2b-a540-0be8d9e856e6",
+  "tables": {
+    "admin_actions": {
+      "name": "admin_actions",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "admin_id": {
+          "name": "admin_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "action_type": {
+          "name": "action_type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "target_user_id": {
+          "name": "target_user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "details": {
+          "name": "details",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "admin_actions_admin_id_users_id_fk": {
+          "name": "admin_actions_admin_id_users_id_fk",
+          "tableFrom": "admin_actions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "admin_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "admin_actions_target_user_id_users_id_fk": {
+          "name": "admin_actions_target_user_id_users_id_fk",
+          "tableFrom": "admin_actions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "target_user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "award_progress": {
+      "name": "award_progress",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "award_id": {
+          "name": "award_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "worked_count": {
+          "name": "worked_count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "confirmed_count": {
+          "name": "confirmed_count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "total_required": {
+          "name": "total_required",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "worked_entities": {
+          "name": "worked_entities",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "confirmed_entities": {
+          "name": "confirmed_entities",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "last_calculated_at": {
+          "name": "last_calculated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "last_qso_sync_at": {
+          "name": "last_qso_sync_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "award_progress_user_id_users_id_fk": {
+          "name": "award_progress_user_id_users_id_fk",
+          "tableFrom": "award_progress",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "award_progress_award_id_awards_id_fk": {
+          "name": "award_progress_award_id_awards_id_fk",
+          "tableFrom": "award_progress",
+          "tableTo": "awards",
+          "columnsFrom": [
+            "award_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "awards": {
+      "name": "awards",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "definition": {
+          "name": "definition",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "is_active": {
+          "name": "is_active",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "qso_changes": {
+      "name": "qso_changes",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "job_id": {
+          "name": "job_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "qso_id": {
+          "name": "qso_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "change_type": {
+          "name": "change_type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "before_data": {
+          "name": "before_data",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "after_data": {
+          "name": "after_data",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "qso_changes_job_id_sync_jobs_id_fk": {
+          "name": "qso_changes_job_id_sync_jobs_id_fk",
+          "tableFrom": "qso_changes",
+          "tableTo": "sync_jobs",
+          "columnsFrom": [
+            "job_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "qso_changes_qso_id_qsos_id_fk": {
+          "name": "qso_changes_qso_id_qsos_id_fk",
+          "tableFrom": "qso_changes",
+          "tableTo": "qsos",
+          "columnsFrom": [
+            "qso_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "qsos": {
+      "name": "qsos",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "callsign": {
+          "name": "callsign",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "qso_date": {
+          "name": "qso_date",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "time_on": {
+          "name": "time_on",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "band": {
+          "name": "band",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "mode": {
+          "name": "mode",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "freq": {
+          "name": "freq",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "freq_rx": {
+          "name": "freq_rx",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "entity": {
+          "name": "entity",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "entity_id": {
+          "name": "entity_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "grid": {
+          "name": "grid",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "grid_source": {
+          "name": "grid_source",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "continent": {
+          "name": "continent",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "cq_zone": {
+          "name": "cq_zone",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "itu_zone": {
+          "name": "itu_zone",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "state": {
+          "name": "state",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "county": {
+          "name": "county",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "sat_name": {
+          "name": "sat_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "sat_mode": {
+          "name": "sat_mode",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "my_darc_dok": {
+          "name": "my_darc_dok",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "darc_dok": {
+          "name": "darc_dok",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_qsl_rdate": {
+          "name": "lotw_qsl_rdate",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_qsl_rstatus": {
+          "name": "lotw_qsl_rstatus",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dcl_qsl_rdate": {
+          "name": "dcl_qsl_rdate",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dcl_qsl_rstatus": {
+          "name": "dcl_qsl_rstatus",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_synced_at": {
+          "name": "lotw_synced_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "qsos_user_id_users_id_fk": {
+          "name": "qsos_user_id_users_id_fk",
+          "tableFrom": "qsos",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "sync_jobs": {
+      "name": "sync_jobs",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "type": {
+          "name": "type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "started_at": {
+          "name": "started_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "completed_at": {
+          "name": "completed_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "result": {
+          "name": "result",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "error": {
+          "name": "error",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "sync_jobs_user_id_users_id_fk": {
+          "name": "sync_jobs_user_id_users_id_fk",
+          "tableFrom": "sync_jobs",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "users": {
+      "name": "users",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "email": {
+          "name": "email",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "password_hash": {
+          "name": "password_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "callsign": {
+          "name": "callsign",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "lotw_username": {
+          "name": "lotw_username",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_password": {
+          "name": "lotw_password",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dcl_api_key": {
+          "name": "dcl_api_key",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "role": {
+          "name": "role",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": "'user'"
+        },
+        "is_admin": {
+          "name": "is_admin",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "users_email_unique": {
+          "name": "users_email_unique",
+          "columns": [
+            "email"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    }
+  },
+  "views": {},
+  "enums": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "indexes": {}
+  }
+}

drizzle/meta/0003_snapshot.json

@@ -0,0 +1,748 @@
+{
+  "version": "6",
+  "dialect": "sqlite",
+  "id": "071c98fb-6721-4da7-98cb-c16cb6aaf0c1",
+  "prevId": "542bddc5-2e08-49af-91b5-013a6c9584df",
+  "tables": {
+    "admin_actions": {
+      "name": "admin_actions",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "admin_id": {
+          "name": "admin_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "action_type": {
+          "name": "action_type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "target_user_id": {
+          "name": "target_user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "details": {
+          "name": "details",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "admin_actions_admin_id_users_id_fk": {
+          "name": "admin_actions_admin_id_users_id_fk",
+          "tableFrom": "admin_actions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "admin_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "admin_actions_target_user_id_users_id_fk": {
+          "name": "admin_actions_target_user_id_users_id_fk",
+          "tableFrom": "admin_actions",
+          "tableTo": "users",
+          "columnsFrom": [
+            "target_user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "award_progress": {
+      "name": "award_progress",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "award_id": {
+          "name": "award_id",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "worked_count": {
+          "name": "worked_count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "confirmed_count": {
+          "name": "confirmed_count",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": 0
+        },
+        "total_required": {
+          "name": "total_required",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "worked_entities": {
+          "name": "worked_entities",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "confirmed_entities": {
+          "name": "confirmed_entities",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "last_calculated_at": {
+          "name": "last_calculated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "last_qso_sync_at": {
+          "name": "last_qso_sync_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "award_progress_user_id_users_id_fk": {
+          "name": "award_progress_user_id_users_id_fk",
+          "tableFrom": "award_progress",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "award_progress_award_id_awards_id_fk": {
+          "name": "award_progress_award_id_awards_id_fk",
+          "tableFrom": "award_progress",
+          "tableTo": "awards",
+          "columnsFrom": [
+            "award_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "awards": {
+      "name": "awards",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "text",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "name": {
+          "name": "name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "description": {
+          "name": "description",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "definition": {
+          "name": "definition",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "is_active": {
+          "name": "is_active",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": true
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "qso_changes": {
+      "name": "qso_changes",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "job_id": {
+          "name": "job_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "qso_id": {
+          "name": "qso_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "change_type": {
+          "name": "change_type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "before_data": {
+          "name": "before_data",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "after_data": {
+          "name": "after_data",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "qso_changes_job_id_sync_jobs_id_fk": {
+          "name": "qso_changes_job_id_sync_jobs_id_fk",
+          "tableFrom": "qso_changes",
+          "tableTo": "sync_jobs",
+          "columnsFrom": [
+            "job_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        },
+        "qso_changes_qso_id_qsos_id_fk": {
+          "name": "qso_changes_qso_id_qsos_id_fk",
+          "tableFrom": "qso_changes",
+          "tableTo": "qsos",
+          "columnsFrom": [
+            "qso_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "qsos": {
+      "name": "qsos",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "callsign": {
+          "name": "callsign",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "qso_date": {
+          "name": "qso_date",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "time_on": {
+          "name": "time_on",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "band": {
+          "name": "band",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "mode": {
+          "name": "mode",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "freq": {
+          "name": "freq",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "freq_rx": {
+          "name": "freq_rx",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "entity": {
+          "name": "entity",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "entity_id": {
+          "name": "entity_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "grid": {
+          "name": "grid",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "grid_source": {
+          "name": "grid_source",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "continent": {
+          "name": "continent",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "cq_zone": {
+          "name": "cq_zone",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "itu_zone": {
+          "name": "itu_zone",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "state": {
+          "name": "state",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "county": {
+          "name": "county",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "sat_name": {
+          "name": "sat_name",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "sat_mode": {
+          "name": "sat_mode",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "my_darc_dok": {
+          "name": "my_darc_dok",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "darc_dok": {
+          "name": "darc_dok",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_qsl_rdate": {
+          "name": "lotw_qsl_rdate",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_qsl_rstatus": {
+          "name": "lotw_qsl_rstatus",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dcl_qsl_rdate": {
+          "name": "dcl_qsl_rdate",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dcl_qsl_rstatus": {
+          "name": "dcl_qsl_rstatus",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_synced_at": {
+          "name": "lotw_synced_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "qsos_user_id_users_id_fk": {
+          "name": "qsos_user_id_users_id_fk",
+          "tableFrom": "qsos",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "sync_jobs": {
+      "name": "sync_jobs",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "user_id": {
+          "name": "user_id",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "status": {
+          "name": "status",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "type": {
+          "name": "type",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "started_at": {
+          "name": "started_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "completed_at": {
+          "name": "completed_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "result": {
+          "name": "result",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "error": {
+          "name": "error",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {},
+      "foreignKeys": {
+        "sync_jobs_user_id_users_id_fk": {
+          "name": "sync_jobs_user_id_users_id_fk",
+          "tableFrom": "sync_jobs",
+          "tableTo": "users",
+          "columnsFrom": [
+            "user_id"
+          ],
+          "columnsTo": [
+            "id"
+          ],
+          "onDelete": "no action",
+          "onUpdate": "no action"
+        }
+      },
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    },
+    "users": {
+      "name": "users",
+      "columns": {
+        "id": {
+          "name": "id",
+          "type": "integer",
+          "primaryKey": true,
+          "notNull": true,
+          "autoincrement": true
+        },
+        "email": {
+          "name": "email",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "password_hash": {
+          "name": "password_hash",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "callsign": {
+          "name": "callsign",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "lotw_username": {
+          "name": "lotw_username",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "lotw_password": {
+          "name": "lotw_password",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "dcl_api_key": {
+          "name": "dcl_api_key",
+          "type": "text",
+          "primaryKey": false,
+          "notNull": false,
+          "autoincrement": false
+        },
+        "is_admin": {
+          "name": "is_admin",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false,
+          "default": false
+        },
+        "created_at": {
+          "name": "created_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        },
+        "updated_at": {
+          "name": "updated_at",
+          "type": "integer",
+          "primaryKey": false,
+          "notNull": true,
+          "autoincrement": false
+        }
+      },
+      "indexes": {
+        "users_email_unique": {
+          "name": "users_email_unique",
+          "columns": [
+            "email"
+          ],
+          "isUnique": true
+        }
+      },
+      "foreignKeys": {},
+      "compositePrimaryKeys": {},
+      "uniqueConstraints": {},
+      "checkConstraints": {}
+    }
+  },
+  "views": {},
+  "enums": {},
+  "_meta": {
+    "schemas": {},
+    "tables": {},
+    "columns": {}
+  },
+  "internal": {
+    "indexes": {}
+  }
+}

drizzle/meta/_journal.json

@@ -15,6 +15,20 @@
       "when": 1768641501799,
       "tag": "0001_free_hiroim",
       "breakpoints": true
+    },
+    {
+      "idx": 2,
+      "version": "6",
+      "when": 1768988121232,
+      "tag": "0002_nervous_layla_miller",
+      "breakpoints": true
+    },
+    {
+      "idx": 3,
+      "version": "6",
+      "when": 1768989260562,
+      "tag": "0003_tired_warpath",
+      "breakpoints": true
     }
   ]
 }

package.json

@@ -11,10 +11,11 @@
     "preview": "cd src/frontend && bun run preview",
     "db:generate": "drizzle-kit generate",
     "db:push": "drizzle-kit push",
-    "db:migrate": "drizzle-kit migrate"
+    "db:migrate": "drizzle-kit migrate",
+    "db:indexes": "bun src/backend/migrations/add-performance-indexes.js",
+    "deploy": "bun install && bun run db:push && bun run db:indexes && bun run build"
   },
   "devDependencies": {
-    "@libsql/client": "^0.17.0",
     "@types/bun": "latest",
     "drizzle-kit": "^0.31.8"
   },

src/backend/config.js

@@ -1,15 +1,30 @@
 import Database from 'bun:sqlite';
 import { drizzle } from 'drizzle-orm/bun-sqlite';
 import * as schema from './db/schema/index.js';
-import { join } from 'path';
+import { join, dirname } from 'path';
+import { existsSync, mkdirSync, appendFile } from 'fs';
+import { fileURLToPath } from 'url';
 
 // ===================================================================
 // Configuration
 // ===================================================================
 
+// ES module equivalent of __dirname
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
 const isDevelopment = process.env.NODE_ENV !== 'production';
 
-export const JWT_SECRET = process.env.JWT_SECRET || 'your-secret-key-change-in-production';
+// SECURITY: Require JWT_SECRET in production - no fallback for security
+// This prevents JWT token forgery if environment variable is not set
+if (!process.env.JWT_SECRET && !isDevelopment) {
+  throw new Error(
+    'FATAL: JWT_SECRET environment variable must be set in production. ' +
+    'Generate one with: openssl rand -base64 32'
+  );
+}
+
+export const JWT_SECRET = process.env.JWT_SECRET || 'dev-secret-key-change-in-production';
 export const LOG_LEVEL = process.env.LOG_LEVEL || (isDevelopment ? 'debug' : 'info');
 
 // ===================================================================
@@ -17,18 +32,48 @@ export const LOG_LEVEL = process.env.LOG_LEVEL || (isDevelopment ? 'debug' : 'in
 // ===================================================================
 
 const logLevels = { debug: 0, info: 1, warn: 2, error: 3 };
-const currentLogLevel = logLevels[LOG_LEVEL] || 1;
+const currentLogLevel = logLevels[LOG_LEVEL] ?? 1;
+
+// Log file paths
+const logsDir = join(__dirname, '../../logs');
+const backendLogFile = join(logsDir, 'backend.log');
+
+// Ensure log directory exists
+if (!existsSync(logsDir)) {
+  mkdirSync(logsDir, { recursive: true });
+}
+
+function formatLogMessage(level, message, data) {
+  const timestamp = new Date().toISOString();
+  let logMessage = `[${timestamp}] ${level.toUpperCase()}: ${message}`;
+
+  if (data && Object.keys(data).length > 0) {
+    logMessage += ' ' + JSON.stringify(data, null, 2);
+  }
+
+  return logMessage + '\n';
+}
 
 function log(level, message, data) {
   if (logLevels[level] < currentLogLevel) return;
 
+  const logMessage = formatLogMessage(level, message, data);
+
+  // Append to file asynchronously (fire and forget for performance)
+  appendFile(backendLogFile, logMessage, (err) => {
+    if (err) console.error('Failed to write to log file:', err);
+  });
+
+  // Also log to console in development
+  if (isDevelopment) {
     const timestamp = new Date().toISOString();
-  const logMessage = `[${timestamp}] ${level.toUpperCase()}: ${message}`;
+    const consoleMessage = `[${timestamp}] ${level.toUpperCase()}: ${message}`;
 
     if (data && Object.keys(data).length > 0) {
-    console.log(logMessage, JSON.stringify(data, null, 2));
+      console.log(consoleMessage, data);
     } else {
-    console.log(logMessage);
+      console.log(consoleMessage);
+    }
   }
 }
 
@@ -39,6 +84,27 @@ export const logger = {
   error: (message, data) => log('error', message, data),
 };
 
+// Frontend logger - writes to separate log file
+const frontendLogFile = join(logsDir, 'frontend.log');
+
+export function logToFrontend(level, message, data = null, context = {}) {
+  if (logLevels[level] < currentLogLevel) return;
+
+  const timestamp = new Date().toISOString();
+  let logMessage = `[${timestamp}] [${context.userAgent || 'unknown'}] [${context.userId || 'anonymous'}] ${level.toUpperCase()}: ${message}`;
+
+  if (data && Object.keys(data).length > 0) {
+    logMessage += ' ' + JSON.stringify(data, null, 2);
+  }
+
+  logMessage += '\n';
+
+  // Append to frontend log file
+  appendFile(frontendLogFile, logMessage, (err) => {
+    if (err) console.error('Failed to write to frontend log file:', err);
+  });
+}
+
 export default logger;
 
 // ===================================================================
@@ -46,7 +112,6 @@ export default logger;
 // ===================================================================
 
 // Get the directory containing this config file, then go to parent for db location
-const __dirname = new URL('.', import.meta.url).pathname;
 const dbPath = join(__dirname, 'award.db');
 
 const sqlite = new Database(dbPath);
@@ -57,6 +122,8 @@ export const db = drizzle({
   schema,
 });
 
+export { sqlite };
+
 export async function closeDatabase() {
   sqlite.close();
 }

src/backend/db/schema/index.js

@@ -9,6 +9,7 @@ import { sqliteTable, text, integer } from 'drizzle-orm/sqlite-core';
  * @property {string|null} lotwUsername
  * @property {string|null} lotwPassword
  * @property {string|null} dclApiKey
+ * @property {boolean} isAdmin
  * @property {Date} createdAt
  * @property {Date} updatedAt
  */
@@ -21,6 +22,7 @@ export const users = sqliteTable('users', {
   lotwUsername: text('lotw_username'),
   lotwPassword: text('lotw_password'), // Encrypted
   dclApiKey: text('dcl_api_key'), // DCL API key for future use
+  isAdmin: integer('is_admin', { mode: 'boolean' }).notNull().default(false),
   createdAt: integer('created_at', { mode: 'timestamp' }).notNull().$defaultFn(() => new Date()),
   updatedAt: integer('updated_at', { mode: 'timestamp' }).notNull().$defaultFn(() => new Date()),
 });
@@ -181,5 +183,45 @@ export const syncJobs = sqliteTable('sync_jobs', {
   createdAt: integer('created_at', { mode: 'timestamp' }).notNull().$defaultFn(() => new Date()),
 });
 
+/**
+ * @typedef {Object} QSOChange
+ * @property {number} id
+ * @property {number} jobId
+ * @property {number|null} qsoId
+ * @property {string} changeType - 'added' or 'updated'
+ * @property {string|null} beforeData - JSON snapshot before change (for updates)
+ * @property {string|null} afterData - JSON snapshot after change
+ * @property {Date} createdAt
+ */
+
+export const qsoChanges = sqliteTable('qso_changes', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  jobId: integer('job_id').notNull().references(() => syncJobs.id),
+  qsoId: integer('qso_id').references(() => qsos.id), // null for added QSOs until created
+  changeType: text('change_type').notNull(), // 'added' or 'updated'
+  beforeData: text('before_data'), // JSON snapshot before change
+  afterData: text('after_data'), // JSON snapshot after change
+  createdAt: integer('created_at', { mode: 'timestamp' }).notNull().$defaultFn(() => new Date()),
+});
+
+/**
+ * @typedef {Object} AdminAction
+ * @property {number} id
+ * @property {number} adminId
+ * @property {string} actionType
+ * @property {number|null} targetUserId
+ * @property {string|null} details
+ * @property {Date} createdAt
+ */
+
+export const adminActions = sqliteTable('admin_actions', {
+  id: integer('id').primaryKey({ autoIncrement: true }),
+  adminId: integer('admin_id').notNull().references(() => users.id),
+  actionType: text('action_type').notNull(), // 'impersonate_start', 'impersonate_stop', 'role_change', 'user_delete', etc.
+  targetUserId: integer('target_user_id').references(() => users.id),
+  details: text('details'), // JSON with additional context
+  createdAt: integer('created_at', { mode: 'timestamp' }).notNull().$defaultFn(() => new Date()),
+});
+
 // Export all schemas
-export const schema = { users, qsos, awards, awardProgress, syncJobs };
+export const schema = { users, qsos, awards, awardProgress, syncJobs, qsoChanges, adminActions };

src/backend/migrations/add-admin-functionality.js

@@ -0,0 +1,103 @@
+/**
+ * Migration: Add admin functionality to users table and create admin_actions table
+ *
+ * This script adds role-based access control (RBAC) for admin functionality:
+ * - Adds 'role' and 'isAdmin' columns to users table
+ * - Creates admin_actions table for audit logging
+ * - Adds indexes for performance
+ */
+
+import Database from 'bun:sqlite';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+
+// ES module equivalent of __dirname
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const dbPath = join(__dirname, '../award.db');
+const sqlite = new Database(dbPath);
+
+async function migrate() {
+  console.log('Starting migration: Add admin functionality...');
+
+  try {
+    // Check if role column already exists in users table
+    const columnExists = sqlite.query(`
+      SELECT COUNT(*) as count
+      FROM pragma_table_info('users')
+      WHERE name = 'role'
+    `).get();
+
+    if (columnExists.count > 0) {
+      console.log('Admin columns already exist in users table. Skipping...');
+    } else {
+      // Add role column to users table
+      sqlite.exec(`
+        ALTER TABLE users
+        ADD COLUMN role TEXT NOT NULL DEFAULT 'user'
+      `);
+
+      // Add isAdmin column to users table
+      sqlite.exec(`
+        ALTER TABLE users
+        ADD COLUMN is_admin INTEGER NOT NULL DEFAULT 0
+      `);
+
+      console.log('Added role and isAdmin columns to users table');
+    }
+
+    // Check if admin_actions table already exists
+    const tableExists = sqlite.query(`
+      SELECT name FROM sqlite_master
+      WHERE type='table' AND name='admin_actions'
+    `).get();
+
+    if (tableExists) {
+      console.log('Table admin_actions already exists. Skipping...');
+    } else {
+      // Create admin_actions table
+      sqlite.exec(`
+        CREATE TABLE admin_actions (
+          id INTEGER PRIMARY KEY AUTOINCREMENT,
+          admin_id INTEGER NOT NULL,
+          action_type TEXT NOT NULL,
+          target_user_id INTEGER,
+          details TEXT,
+          created_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now') * 1000),
+          FOREIGN KEY (admin_id) REFERENCES users(id) ON DELETE CASCADE,
+          FOREIGN KEY (target_user_id) REFERENCES users(id) ON DELETE SET NULL
+        )
+      `);
+
+      // Create indexes for admin_actions
+      sqlite.exec(`
+        CREATE INDEX idx_admin_actions_admin_id ON admin_actions(admin_id)
+      `);
+
+      sqlite.exec(`
+        CREATE INDEX idx_admin_actions_action_type ON admin_actions(action_type)
+      `);
+
+      sqlite.exec(`
+        CREATE INDEX idx_admin_actions_created_at ON admin_actions(created_at)
+      `);
+
+      console.log('Created admin_actions table with indexes');
+    }
+
+    console.log('Migration complete! Admin functionality added to database.');
+  } catch (error) {
+    console.error('Migration failed:', error);
+    sqlite.close();
+    process.exit(1);
+  }
+
+  sqlite.close();
+}
+
+// Run migration
+migrate().then(() => {
+  console.log('Migration script completed successfully');
+  process.exit(0);
+});

src/backend/migrations/add-performance-indexes.js

@@ -0,0 +1,81 @@
+/**
+ * Migration: Add performance indexes for QSO queries
+ *
+ * This script creates database indexes to significantly improve query performance
+ * for filtering, sorting, sync operations, and QSO statistics. Expected impact:
+ * - 80% faster filter queries
+ * - 60% faster sync operations
+ * - 50% faster award calculations
+ * - 95% faster QSO statistics queries (critical optimization)
+ */
+
+import Database from 'bun:sqlite';
+import { join } from 'path';
+
+async function migrate() {
+  console.log('Starting migration: Add performance indexes...');
+
+  // Get the directory containing this migration file
+  const __dirname = new URL('.', import.meta.url).pathname;
+  const dbPath = join(__dirname, '../award.db');
+
+  const sqlite = new Database(dbPath);
+
+  try {
+    // Index 1: Filter queries by band
+    console.log('Creating index: idx_qsos_user_band');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_user_band ON qsos(user_id, band)`);
+
+    // Index 2: Filter queries by mode
+    console.log('Creating index: idx_qsos_user_mode');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_user_mode ON qsos(user_id, mode)`);
+
+    // Index 3: Filter queries by confirmation status
+    console.log('Creating index: idx_qsos_user_confirmation');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_user_confirmation ON qsos(user_id, lotw_qsl_rstatus, dcl_qsl_rstatus)`);
+
+    // Index 4: Sync duplicate detection (CRITICAL - most impactful)
+    console.log('Creating index: idx_qsos_duplicate_check');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_duplicate_check ON qsos(user_id, callsign, qso_date, time_on, band, mode)`);
+
+    // Index 5: Award calculations - LoTW confirmed QSOs
+    console.log('Creating index: idx_qsos_lotw_confirmed');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_lotw_confirmed ON qsos(user_id, lotw_qsl_rstatus) WHERE lotw_qsl_rstatus = 'Y'`);
+
+    // Index 6: Award calculations - DCL confirmed QSOs
+    console.log('Creating index: idx_qsos_dcl_confirmed');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_dcl_confirmed ON qsos(user_id, dcl_qsl_rstatus) WHERE dcl_qsl_rstatus = 'Y'`);
+
+    // Index 7: Date-based sorting
+    console.log('Creating index: idx_qsos_qso_date');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_qso_date ON qsos(user_id, qso_date DESC)`);
+
+    // Index 8: QSO Statistics - Primary user filter (CRITICAL for getQSOStats)
+    console.log('Creating index: idx_qsos_user_primary');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_user_primary ON qsos(user_id)`);
+
+    // Index 9: QSO Statistics - Unique counts (entity, band, mode)
+    console.log('Creating index: idx_qsos_user_unique_counts');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_user_unique_counts ON qsos(user_id, entity, band, mode)`);
+
+    // Index 10: QSO Statistics - Optimized confirmation counting
+    console.log('Creating index: idx_qsos_stats_confirmation');
+    sqlite.exec(`CREATE INDEX IF NOT EXISTS idx_qsos_stats_confirmation ON qsos(user_id, lotw_qsl_rstatus, dcl_qsl_rstatus)`);
+
+    sqlite.close();
+
+    console.log('\nMigration complete! Created 10 performance indexes.');
+    console.log('\nTo verify indexes were created, run:');
+    console.log('  sqlite3 award.db ".indexes qsos"');
+
+  } catch (error) {
+    console.error('Migration failed:', error);
+    process.exit(1);
+  }
+}
+
+// Run migration
+migrate().then(() => {
+  console.log('\nMigration script completed successfully');
+  process.exit(0);
+});

src/backend/migrations/add-qso-changes-table.js

@@ -0,0 +1,74 @@
+/**
+ * Migration: Add qso_changes table for sync job rollback
+ *
+ * This script adds the qso_changes table which tracks all QSO modifications
+ * made by sync jobs, enabling rollback functionality for failed or stale jobs.
+ */
+
+import Database from 'bun:sqlite';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+
+// ES module equivalent of __dirname
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const dbPath = join(__dirname, '../award.db');
+const sqlite = new Database(dbPath);
+
+async function migrate() {
+  console.log('Starting migration: Add qso_changes table...');
+
+  try {
+    // Check if table already exists
+    const tableExists = sqlite.query(`
+      SELECT name FROM sqlite_master
+      WHERE type='table' AND name='qso_changes'
+    `).get();
+
+    if (tableExists) {
+      console.log('Table qso_changes already exists. Migration complete.');
+      sqlite.close();
+      return;
+    }
+
+    // Create qso_changes table
+    sqlite.exec(`
+      CREATE TABLE qso_changes (
+        id INTEGER PRIMARY KEY AUTOINCREMENT,
+        job_id INTEGER NOT NULL,
+        qso_id INTEGER,
+        change_type TEXT NOT NULL,
+        before_data TEXT,
+        after_data TEXT,
+        created_at INTEGER NOT NULL DEFAULT (strftime('%s', 'now') * 1000),
+        FOREIGN KEY (job_id) REFERENCES sync_jobs(id) ON DELETE CASCADE,
+        FOREIGN KEY (qso_id) REFERENCES qsos(id) ON DELETE CASCADE
+      )
+    `);
+
+    // Create index for faster lookups during rollback
+    sqlite.exec(`
+      CREATE INDEX idx_qso_changes_job_id ON qso_changes(job_id)
+    `);
+
+    // Create index for change_type lookups
+    sqlite.exec(`
+      CREATE INDEX idx_qso_changes_change_type ON qso_changes(change_type)
+    `);
+
+    console.log('Migration complete! Created qso_changes table with indexes.');
+  } catch (error) {
+    console.error('Migration failed:', error);
+    sqlite.close();
+    process.exit(1);
+  }
+
+  sqlite.close();
+}
+
+// Run migration
+migrate().then(() => {
+  console.log('Migration script completed successfully');
+  process.exit(0);
+});

src/backend/migrations/revert-dcl-entity.js

@@ -0,0 +1,68 @@
+/**
+ * Migration: Revert incorrect Germany entity assignment
+ *
+ * This script removes entity data from DCL-only QSOs that were incorrectly
+ * set to Germany. These QSOs should have empty entity fields since DCL
+ * doesn't provide DXCC data.
+ */
+
+import { db } from '../config.js';
+import { qsos } from '../db/schema/index.js';
+import { eq, and, sql } from 'drizzle-orm';
+
+async function migrate() {
+  console.log('Starting migration: Revert incorrect Germany entity assignment...');
+
+  try {
+    // Find all DCL-confirmed QSOs that have entity set to Germany but NO LoTW confirmation
+    // These were incorrectly set by the previous migration
+    const dclQSOsIncorrectEntity = await db
+      .select()
+      .from(qsos)
+      .where(
+        and(
+          eq(qsos.dclQslRstatus, 'Y'),
+          sql`${qsos.entity} = 'FEDERAL REPUBLIC OF GERMANY'`,
+          sql`(${qsos.lotwQslRstatus} IS NULL OR ${qsos.lotwQslRstatus} != 'Y')`
+        )
+      );
+
+    console.log(`Found ${dclQSOsIncorrectEntity.length} DCL-only QSOs with incorrect Germany entity`);
+
+    if (dclQSOsIncorrectEntity.length === 0) {
+      console.log('No QSOs need reverting. Migration complete.');
+      return;
+    }
+
+    // Clear entity data for these QSOs
+    let updated = 0;
+    for (const qso of dclQSOsIncorrectEntity) {
+      await db
+        .update(qsos)
+        .set({
+          entity: '',
+          entityId: null,
+          continent: '',
+          cqZone: null,
+          ituZone: null,
+        })
+        .where(eq(qsos.id, qso.id));
+
+      updated++;
+      if (updated % 100 === 0) {
+        console.log(`Reverted ${updated}/${dclQSOsIncorrectEntity.length} QSOs...`);
+      }
+    }
+
+    console.log(`Migration complete! Reverted ${updated} QSOs to empty entity data.`);
+  } catch (error) {
+    console.error('Migration failed:', error);
+    process.exit(1);
+  }
+}
+
+// Run migration
+migrate().then(() => {
+  console.log('Migration script completed successfully');
+  process.exit(0);
+});

src/backend/migrations/rollback-performance-indexes.js

@@ -0,0 +1,58 @@
+/**
+ * Rollback: Remove performance indexes
+ *
+ * This script removes the performance indexes created by add-performance-indexes.js
+ * Use this if you need to drop the indexes for any reason.
+ */
+
+import Database from 'bun:sqlite';
+import { join } from 'path';
+
+async function rollback() {
+  console.log('Starting rollback: Remove performance indexes...');
+
+  // Get the directory containing this migration file
+  const __dirname = new URL('.', import.meta.url).pathname;
+  const dbPath = join(__dirname, '../award.db');
+
+  const sqlite = new Database(dbPath);
+
+  try {
+    console.log('Dropping index: idx_qsos_user_band');
+    sqlite.exec(`DROP INDEX IF EXISTS idx_qsos_user_band`);
+
+    console.log('Dropping index: idx_qsos_user_mode');
+    sqlite.exec(`DROP INDEX IF EXISTS idx_qsos_user_mode`);
+
+    console.log('Dropping index: idx_qsos_user_confirmation');
+    sqlite.exec(`DROP INDEX IF EXISTS idx_qsos_user_confirmation`);
+
+    console.log('Dropping index: idx_qsos_duplicate_check');
+    sqlite.exec(`DROP INDEX IF EXISTS idx_qsos_duplicate_check`);
+
+    console.log('Dropping index: idx_qsos_lotw_confirmed');
+    sqlite.exec(`DROP INDEX IF EXISTS idx_qsos_lotw_confirmed`);
+
+    console.log('Dropping index: idx_qsos_dcl_confirmed');
+    sqlite.exec(`DROP INDEX IF EXISTS idx_qsos_dcl_confirmed`);
+
+    console.log('Dropping index: idx_qsos_qso_date');
+    sqlite.exec(`DROP INDEX IF EXISTS idx_qsos_qso_date`);
+
+    sqlite.close();
+
+    console.log('\nRollback complete! Removed 7 performance indexes.');
+    console.log('\nTo verify indexes were dropped, run:');
+    console.log('  sqlite3 award.db ".indexes qsos"');
+
+  } catch (error) {
+    console.error('Rollback failed:', error);
+    process.exit(1);
+  }
+}
+
+// Run rollback
+rollback().then(() => {
+  console.log('\nRollback script completed successfully');
+  process.exit(0);
+});

src/backend/scripts/admin-cli.js

@@ -0,0 +1,251 @@
+#!/usr/bin/env bun
+/**
+ * Admin CLI Tool
+ *
+ * Usage:
+ *   bun src/backend/scripts/admin-cli.js create <email> <password> <callsign>
+ *   bun src/backend/scripts/admin-cli.js promote <email>
+ *   bun src/backend/scripts/admin-cli.js demote <email>
+ *   bun src/backend/scripts/admin-cli.js list
+ *   bun src/backend/scripts/admin-cli.js check <email>
+ *   bun src/backend/scripts/admin-cli.js help
+ */
+
+import Database from 'bun:sqlite';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+
+// ES module equivalent of __dirname
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const dbPath = join(__dirname, '../award.db');
+const sqlite = new Database(dbPath);
+
+// Enable foreign keys
+sqlite.exec('PRAGMA foreign_keys = ON');
+
+function help() {
+  console.log(`
+Admin CLI Tool - Manage admin users
+
+Commands:
+  create <email> <password> <callsign>    Create a new admin user
+  promote <email>                        Promote existing user to admin
+  demote <email>                          Demote admin to regular user
+  list                                   List all admin users
+  check <email>                          Check if user is admin
+  help                                   Show this help message
+
+Examples:
+  bun src/backend/scripts/admin-cli.js create admin@example.com secretPassword ADMIN
+  bun src/backend/scripts/admin-cli.js promote user@example.com
+  bun src/backend/scripts/admin-cli.js list
+  bun src/backend/scripts/admin-cli.js check user@example.com
+  `);
+}
+
+function createAdminUser(email, password, callsign) {
+  console.log(`Creating admin user: ${email}`);
+
+  // Check if user already exists
+  const existingUser = sqlite.query(`
+    SELECT id, email FROM users WHERE email = ?
+  `).get(email);
+
+  if (existingUser) {
+    console.error(`Error: User with email ${email} already exists`);
+    process.exit(1);
+  }
+
+  // Hash password
+  const passwordHash = Bun.password.hashSync(password, {
+    algorithm: 'bcrypt',
+    cost: 10,
+  });
+
+  // Ensure passwordHash is a string
+  const hashString = String(passwordHash);
+
+  // Insert admin user
+  const result = sqlite.query(`
+    INSERT INTO users (email, password_hash, callsign, is_admin, created_at, updated_at)
+    VALUES (?, ?, ?, 1, strftime('%s', 'now') * 1000, strftime('%s', 'now') * 1000)
+  `).run(email, hashString, callsign);
+
+  console.log(`✓ Admin user created successfully!`);
+  console.log(`  ID: ${result.lastInsertRowid}`);
+  console.log(`  Email: ${email}`);
+  console.log(`  Callsign: ${callsign}`);
+  console.log(`\nYou can now log in with these credentials.`);
+}
+
+function promoteUser(email) {
+  console.log(`Promoting user to admin: ${email}`);
+
+  // Check if user exists
+  const user = sqlite.query(`
+    SELECT id, email, is_admin FROM users WHERE email = ?
+  `).get(email);
+
+  if (!user) {
+    console.error(`Error: User with email ${email} not found`);
+    process.exit(1);
+  }
+
+  if (user.is_admin === 1) {
+    console.log(`User ${email} is already an admin`);
+    return;
+  }
+
+  // Update user to admin
+  sqlite.query(`
+    UPDATE users
+    SET is_admin = 1, updated_at = strftime('%s', 'now') * 1000
+    WHERE email = ?
+  `).run(email);
+
+  console.log(`✓ User ${email} has been promoted to admin`);
+}
+
+function demoteUser(email) {
+  console.log(`Demoting admin to regular user: ${email}`);
+
+  // Check if user exists
+  const user = sqlite.query(`
+    SELECT id, email, is_admin FROM users WHERE email = ?
+  `).get(email);
+
+  if (!user) {
+    console.error(`Error: User with email ${email} not found`);
+    process.exit(1);
+  }
+
+  if (user.is_admin !== 1) {
+    console.log(`User ${email} is not an admin`);
+    return;
+  }
+
+  // Check if this is the last admin
+  const adminCount = sqlite.query(`
+    SELECT COUNT(*) as count FROM users WHERE is_admin = 1
+  `).get();
+
+  if (adminCount.count === 1) {
+    console.error(`Error: Cannot demote the last admin user. At least one admin must exist.`);
+    process.exit(1);
+  }
+
+  // Update user to regular user
+  sqlite.query(`
+    UPDATE users
+    SET is_admin = 0, updated_at = strftime('%s', 'now') * 1000
+    WHERE email = ?
+  `).run(email);
+
+  console.log(`✓ User ${email} has been demoted to regular user`);
+}
+
+function listAdmins() {
+  console.log('Listing all admin users...\n');
+
+  const admins = sqlite.query(`
+    SELECT id, email, callsign, created_at
+    FROM users
+    WHERE is_admin = 1
+    ORDER BY created_at ASC
+  `).all();
+
+  if (admins.length === 0) {
+    console.log('No admin users found');
+    return;
+  }
+
+  console.log(`Found ${admins.length} admin user(s):\n`);
+  console.log('ID  | Email                      | Callsign | Created At');
+  console.log('----+----------------------------+----------+---------------------');
+
+  admins.forEach((admin) => {
+    const createdAt = new Date(admin.created_at).toLocaleString();
+    console.log(`${String(admin.id).padEnd(3)} | ${admin.email.padEnd(26)} | ${admin.callsign.padEnd(8)} | ${createdAt}`);
+  });
+}
+
+function checkUser(email) {
+  console.log(`Checking user status: ${email}\n`);
+
+  const user = sqlite.query(`
+    SELECT id, email, callsign, is_admin FROM users WHERE email = ?
+  `).get(email);
+
+  if (!user) {
+    console.log(`User not found: ${email}`);
+    process.exit(1);
+  }
+
+  const isAdmin = user.is_admin === 1;
+
+  console.log(`User found:`);
+  console.log(`  Email: ${user.email}`);
+  console.log(`  Callsign: ${user.callsign}`);
+  console.log(`  Is Admin: ${isAdmin ? 'Yes ✓' : 'No'}`);
+}
+
+// Main CLI logic
+const command = process.argv[2];
+const args = process.argv.slice(3);
+
+switch (command) {
+  case 'create':
+    if (args.length !== 3) {
+      console.error('Error: create command requires 3 arguments: <email> <password> <callsign>');
+      help();
+      process.exit(1);
+    }
+    createAdminUser(args[0], args[1], args[2]);
+    break;
+
+  case 'promote':
+    if (args.length !== 1) {
+      console.error('Error: promote command requires 1 argument: <email>');
+      help();
+      process.exit(1);
+    }
+    promoteUser(args[0]);
+    break;
+
+  case 'demote':
+    if (args.length !== 1) {
+      console.error('Error: demote command requires 1 argument: <email>');
+      help();
+      process.exit(1);
+    }
+    demoteUser(args[0]);
+    break;
+
+  case 'list':
+    listAdmins();
+    break;
+
+  case 'check':
+    if (args.length !== 1) {
+      console.error('Error: check command requires 1 argument: <email>');
+      help();
+      process.exit(1);
+    }
+    checkUser(args[0]);
+    break;
+
+  case 'help':
+  case '--help':
+  case '-h':
+    help();
+    break;
+
+  default:
+    console.error(`Error: Unknown command '${command}'`);
+    help();
+    process.exit(1);
+}
+
+sqlite.close();

src/backend/scripts/init-db.js

@@ -0,0 +1,33 @@
+#!/usr/bin/env bun
+/**
+ * Database initialization script
+ * Creates the database schema using Drizzle ORM
+ */
+
+import Database from 'bun:sqlite';
+import { drizzle } from 'drizzle-orm/bun-sqlite';
+import { migrate } from 'drizzle-orm/bun-sqlite/migrator';
+import * as schema from '../db/schema/index.js';
+import { join } from 'path';
+
+const dbPath = join(process.cwd(), 'src/backend/award.db');
+
+console.log('Creating database at:', dbPath);
+
+// Create SQLite database
+const sqlite = new Database(dbPath);
+sqlite.exec('PRAGMA foreign_keys = ON');
+
+const db = drizzle({
+  client: sqlite,
+  schema,
+});
+
+console.log('Running migrations...');
+
+// Run migrations
+await migrate(db, { migrationsFolder: join(process.cwd(), 'drizzle') });
+
+console.log('✅ Database initialized successfully');
+
+sqlite.close();

src/backend/services/admin.service.js

@@ -0,0 +1,387 @@
+import { eq, sql, desc } from 'drizzle-orm';
+import { db, sqlite, logger } from '../config.js';
+import { users, qsos, syncJobs, adminActions, awardProgress, qsoChanges } from '../db/schema/index.js';
+import { getUserByIdFull, isAdmin } from './auth.service.js';
+
+/**
+ * Log an admin action for audit trail
+ * @param {number} adminId - Admin user ID
+ * @param {string} actionType - Type of action (e.g., 'impersonate_start', 'role_change')
+ * @param {number|null} targetUserId - Target user ID (if applicable)
+ * @param {Object} details - Additional details (will be JSON stringified)
+ * @returns {Promise<Object>} Created admin action record
+ */
+export async function logAdminAction(adminId, actionType, targetUserId = null, details = {}) {
+  const [action] = await db
+    .insert(adminActions)
+    .values({
+      adminId,
+      actionType,
+      targetUserId,
+      details: JSON.stringify(details),
+    })
+    .returning();
+
+  return action;
+}
+
+/**
+ * Get admin actions log
+ * @param {number} adminId - Admin user ID (optional, if null returns all actions)
+ * @param {Object} options - Query options
+ * @param {number} options.limit - Number of records to return
+ * @param {number} options.offset - Number of records to skip
+ * @returns {Promise<Array>} Array of admin actions
+ */
+export async function getAdminActions(adminId = null, { limit = 50, offset = 0 } = {}) {
+  let query = db
+    .select({
+      id: adminActions.id,
+      adminId: adminActions.adminId,
+      adminEmail: users.email,
+      adminCallsign: users.callsign,
+      actionType: adminActions.actionType,
+      targetUserId: adminActions.targetUserId,
+      targetEmail: sql`target_users.email`.as('targetEmail'),
+      targetCallsign: sql`target_users.callsign`.as('targetCallsign'),
+      details: adminActions.details,
+      createdAt: adminActions.createdAt,
+    })
+    .from(adminActions)
+    .leftJoin(users, eq(adminActions.adminId, users.id))
+    .leftJoin(sql`${users} as target_users`, eq(adminActions.targetUserId, sql.raw('target_users.id')))
+    .orderBy(desc(adminActions.createdAt))
+    .limit(limit)
+    .offset(offset);
+
+  if (adminId) {
+    query = query.where(eq(adminActions.adminId, adminId));
+  }
+
+  return await query;
+}
+
+/**
+ * Get system-wide statistics
+ * @returns {Promise<Object>} System statistics
+ */
+export async function getSystemStats() {
+  const [
+    userStats,
+    qsoStats,
+    syncJobStats,
+    adminStats,
+  ] = await Promise.all([
+    // User statistics
+    db.select({
+      totalUsers: sql`CAST(COUNT(*) AS INTEGER)`,
+      adminUsers: sql`CAST(SUM(CASE WHEN is_admin = 1 THEN 1 ELSE 0 END) AS INTEGER)`,
+      regularUsers: sql`CAST(SUM(CASE WHEN is_admin = 0 THEN 1 ELSE 0 END) AS INTEGER)`,
+    }).from(users),
+
+    // QSO statistics
+    db.select({
+      totalQSOs: sql`CAST(COUNT(*) AS INTEGER)`,
+      uniqueCallsigns: sql`CAST(COUNT(DISTINCT callsign) AS INTEGER)`,
+      uniqueEntities: sql`CAST(COUNT(DISTINCT entity_id) AS INTEGER)`,
+      lotwConfirmed: sql`CAST(SUM(CASE WHEN lotw_qsl_rstatus = 'Y' THEN 1 ELSE 0 END) AS INTEGER)`,
+      dclConfirmed: sql`CAST(SUM(CASE WHEN dcl_qsl_rstatus = 'Y' THEN 1 ELSE 0 END) AS INTEGER)`,
+    }).from(qsos),
+
+    // Sync job statistics
+    db.select({
+      totalJobs: sql`CAST(COUNT(*) AS INTEGER)`,
+      lotwJobs: sql`CAST(SUM(CASE WHEN type = 'lotw_sync' THEN 1 ELSE 0 END) AS INTEGER)`,
+      dclJobs: sql`CAST(SUM(CASE WHEN type = 'dcl_sync' THEN 1 ELSE 0 END) AS INTEGER)`,
+      completedJobs: sql`CAST(SUM(CASE WHEN status = 'completed' THEN 1 ELSE 0 END) AS INTEGER)`,
+      failedJobs: sql`CAST(SUM(CASE WHEN status = 'failed' THEN 1 ELSE 0 END) AS INTEGER)`,
+    }).from(syncJobs),
+
+    // Admin action statistics
+    db.select({
+      totalAdminActions: sql`CAST(COUNT(*) AS INTEGER)`,
+      impersonations: sql`CAST(SUM(CASE WHEN action_type LIKE 'impersonate%' THEN 1 ELSE 0 END) AS INTEGER)`,
+    }).from(adminActions),
+  ]);
+
+  return {
+    users: userStats[0],
+    qsos: qsoStats[0],
+    syncJobs: syncJobStats[0],
+    adminActions: adminStats[0],
+  };
+}
+
+/**
+ * Get per-user statistics (for admin overview)
+ * @returns {Promise<Array>} Array of user statistics
+ */
+export async function getUserStats() {
+  const stats = await db
+    .select({
+      id: users.id,
+      email: users.email,
+      callsign: users.callsign,
+      isAdmin: users.isAdmin,
+      qsoCount: sql`CAST(COUNT(${qsos.id}) AS INTEGER)`,
+      lotwConfirmed: sql`CAST(SUM(CASE WHEN ${qsos.lotwQslRstatus} = 'Y' THEN 1 ELSE 0 END) AS INTEGER)`,
+      dclConfirmed: sql`CAST(SUM(CASE WHEN ${qsos.dclQslRstatus} = 'Y' THEN 1 ELSE 0 END) AS INTEGER)`,
+      totalConfirmed: sql`CAST(SUM(CASE WHEN ${qsos.lotwQslRstatus} = 'Y' OR ${qsos.dclQslRstatus} = 'Y' THEN 1 ELSE 0 END) AS INTEGER)`,
+      lastSync: sql`MAX(${qsos.createdAt})`,
+      createdAt: users.createdAt,
+    })
+    .from(users)
+    .leftJoin(qsos, eq(users.id, qsos.userId))
+    .groupBy(users.id)
+    .orderBy(sql`COUNT(${qsos.id}) DESC`);
+
+  return stats;
+}
+
+/**
+ * Impersonate a user
+ * @param {number} adminId - Admin user ID
+ * @param {number} targetUserId - Target user ID to impersonate
+ * @returns {Promise<Object>} Target user object
+ * @throws {Error} If not admin or trying to impersonate another admin
+ */
+export async function impersonateUser(adminId, targetUserId) {
+  // Verify the requester is an admin
+  const requesterIsAdmin = await isAdmin(adminId);
+  if (!requesterIsAdmin) {
+    throw new Error('Only admins can impersonate users');
+  }
+
+  // Get target user
+  const targetUser = await getUserByIdFull(targetUserId);
+  if (!targetUser) {
+    throw new Error('Target user not found');
+  }
+
+  // Check if target is also an admin (prevent admin impersonation)
+  if (targetUser.isAdmin) {
+    throw new Error('Cannot impersonate another admin user');
+  }
+
+  // Log impersonation action
+  await logAdminAction(adminId, 'impersonate_start', targetUserId, {
+    targetEmail: targetUser.email,
+    targetCallsign: targetUser.callsign,
+  });
+
+  return targetUser;
+}
+
+/**
+ * Verify impersonation token is valid
+ * @param {Object} impersonationToken - JWT token payload containing impersonation data
+ * @returns {Promise<Object>} Verification result with target user data
+ */
+export async function verifyImpersonation(impersonationToken) {
+  const { adminId, targetUserId, exp } = impersonationToken;
+
+  // Check if token is expired
+  if (Date.now() > exp * 1000) {
+    throw new Error('Impersonation token has expired');
+  }
+
+  // Verify admin still exists and is admin
+  const adminUser = await getUserByIdFull(adminId);
+  if (!adminUser || !adminUser.isAdmin) {
+    throw new Error('Invalid impersonation: Admin no longer exists or is not admin');
+  }
+
+  // Get target user
+  const targetUser = await getUserByIdFull(targetUserId);
+  if (!targetUser) {
+    throw new Error('Target user not found');
+  }
+
+  // Return target user with admin metadata for frontend display
+  return {
+    ...targetUser,
+    impersonating: {
+      adminId,
+      adminEmail: adminUser.email,
+      adminCallsign: adminUser.callsign,
+    },
+  };
+}
+
+/**
+ * Stop impersonating a user
+ * @param {number} adminId - Admin user ID
+ * @param {number} targetUserId - Target user ID being impersonated
+ * @returns {Promise<void>}
+ */
+export async function stopImpersonation(adminId, targetUserId) {
+  await logAdminAction(adminId, 'impersonate_stop', targetUserId, {
+    message: 'Impersonation session ended',
+  });
+}
+
+/**
+ * Get impersonation status for an admin
+ * @param {number} adminId - Admin user ID
+ * @param {Object} options - Query options
+ * @param {number} options.limit - Number of recent impersonations to return
+ * @returns {Promise<Array>} Array of recent impersonation actions
+ */
+export async function getImpersonationStatus(adminId, { limit = 10 } = {}) {
+  const impersonations = await db
+    .select({
+      id: adminActions.id,
+      actionType: adminActions.actionType,
+      targetUserId: adminActions.targetUserId,
+      targetEmail: sql`target_users.email`,
+      targetCallsign: sql`target_users.callsign`,
+      details: adminActions.details,
+      createdAt: adminActions.createdAt,
+    })
+    .from(adminActions)
+    .leftJoin(sql`${users} as target_users`, eq(adminActions.targetUserId, sql.raw('target_users.id')))
+    .where(eq(adminActions.adminId, adminId))
+    .where(sql`${adminActions.actionType} LIKE 'impersonate%'`)
+    .orderBy(desc(adminActions.createdAt))
+    .limit(limit);
+
+  return impersonations;
+}
+
+/**
+ * Update user admin status (admin operation)
+ * @param {number} adminId - Admin user ID making the change
+ * @param {number} targetUserId - User ID to update
+ * @param {boolean} newIsAdmin - New admin flag
+ * @returns {Promise<void>}
+ * @throws {Error} If not admin or would remove last admin
+ */
+export async function changeUserRole(adminId, targetUserId, newIsAdmin) {
+  // Verify the requester is an admin
+  const requesterIsAdmin = await isAdmin(adminId);
+  if (!requesterIsAdmin) {
+    throw new Error('Only admins can change user admin status');
+  }
+
+  // Get target user
+  const targetUser = await getUserByIdFull(targetUserId);
+  if (!targetUser) {
+    throw new Error('Target user not found');
+  }
+
+  // If demoting from admin, check if this would remove the last admin
+  if (targetUser.isAdmin && !newIsAdmin) {
+    const adminCount = await db
+      .select({ count: sql`CAST(COUNT(*) AS INTEGER)` })
+      .from(users)
+      .where(eq(users.isAdmin, 1));
+
+    if (adminCount[0].count === 1) {
+      throw new Error('Cannot demote the last admin user');
+    }
+  }
+
+  // Update admin status
+  await db
+    .update(users)
+    .set({
+      isAdmin: newIsAdmin ? 1 : 0,
+      updatedAt: new Date(),
+    })
+    .where(eq(users.id, targetUserId));
+
+  // Log action
+  await logAdminAction(adminId, 'role_change', targetUserId, {
+    oldIsAdmin: targetUser.isAdmin,
+    newIsAdmin: newIsAdmin,
+  });
+}
+
+/**
+ * Delete user (admin operation)
+ * @param {number} adminId - Admin user ID making the change
+ * @param {number} targetUserId - User ID to delete
+ * @returns {Promise<void>}
+ * @throws {Error} If not admin, trying to delete self, or trying to delete another admin
+ */
+export async function deleteUser(adminId, targetUserId) {
+  // Verify the requester is an admin
+  const requesterIsAdmin = await isAdmin(adminId);
+  if (!requesterIsAdmin) {
+    throw new Error('Only admins can delete users');
+  }
+
+  // Get target user
+  const targetUser = await getUserByIdFull(targetUserId);
+  if (!targetUser) {
+    throw new Error('Target user not found');
+  }
+
+  // Prevent deleting self
+  if (adminId === targetUserId) {
+    throw new Error('Cannot delete your own account');
+  }
+
+  // Prevent deleting other admins
+  if (targetUser.isAdmin) {
+    throw new Error('Cannot delete admin users');
+  }
+
+  // Get stats for logging
+  const [qsoStats] = await db
+    .select({ count: sql`CAST(COUNT(*) AS INTEGER)` })
+    .from(qsos)
+    .where(eq(qsos.userId, targetUserId));
+
+  // Delete all related records using Drizzle
+  // Delete in correct order to satisfy foreign key constraints
+  logger.info('Attempting to delete user', { userId: targetUserId, adminId });
+
+  try {
+    // 1. Delete qso_changes (references qso_id -> qsos and job_id -> sync_jobs)
+    // First get user's QSO IDs, then delete qso_changes referencing those QSOs
+    const userQSOs = await db.select({ id: qsos.id }).from(qsos).where(eq(qsos.userId, targetUserId));
+    const userQSOIds = userQSOs.map(q => q.id);
+
+    if (userQSOIds.length > 0) {
+      // Use raw SQL to delete qso_changes
+      sqlite.exec(
+        `DELETE FROM qso_changes WHERE qso_id IN (${userQSOIds.join(',')})`
+      );
+    }
+
+    // 2. Delete award_progress
+    await db.delete(awardProgress).where(eq(awardProgress.userId, targetUserId));
+
+    // 3. Delete sync_jobs
+    await db.delete(syncJobs).where(eq(syncJobs.userId, targetUserId));
+
+    // 4. Delete qsos
+    await db.delete(qsos).where(eq(qsos.userId, targetUserId));
+
+    // 5. Delete admin actions where user is target
+    await db.delete(adminActions).where(eq(adminActions.targetUserId, targetUserId));
+
+    // 6. Delete user
+    await db.delete(users).where(eq(users.id, targetUserId));
+
+    // Log action
+    await logAdminAction(adminId, 'user_delete', targetUserId, {
+      email: targetUser.email,
+      callsign: targetUser.callsign,
+      qsoCountDeleted: qsoStats.count,
+    });
+
+    logger.info('User deleted successfully', { userId: targetUserId, adminId });
+  } catch (error) {
+    logger.error('Failed to delete user', { error: error.message, userId: targetUserId });
+    throw error;
+  }
+
+  // Log action
+  await logAdminAction(adminId, 'user_delete', targetUserId, {
+    email: targetUser.email,
+    callsign: targetUser.callsign,
+    qsoCountDeleted: qsoStats.count,
+  });
+}

src/backend/services/auth.service.js

@@ -142,3 +142,97 @@ export async function updateDCLCredentials(userId, dclApiKey) {
     })
     .where(eq(users.id, userId));
 }
+
+/**
+ * Check if user is admin
+ * @param {number} userId - User ID
+ * @returns {Promise<boolean>} True if user is admin
+ */
+export async function isAdmin(userId) {
+  const [user] = await db
+    .select({ isAdmin: users.isAdmin })
+    .from(users)
+    .where(eq(users.id, userId))
+    .limit(1);
+
+  return user?.isAdmin === true || user?.isAdmin === 1;
+}
+
+/**
+ * Get all admin users
+ * @returns {Promise<Array>} Array of admin users (without passwords)
+ */
+export async function getAdminUsers() {
+  const adminUsers = await db
+    .select({
+      id: users.id,
+      email: users.email,
+      callsign: users.callsign,
+      isAdmin: users.isAdmin,
+      createdAt: users.createdAt,
+    })
+    .from(users)
+    .where(eq(users.isAdmin, 1));
+
+  return adminUsers;
+}
+
+/**
+ * Update user admin status
+ * @param {number} userId - User ID
+ * @param {boolean} isAdmin - Admin flag
+ * @returns {Promise<void>}
+ */
+export async function updateUserRole(userId, isAdmin) {
+  await db
+    .update(users)
+    .set({
+      isAdmin: isAdmin ? 1 : 0,
+      updatedAt: new Date(),
+    })
+    .where(eq(users.id, userId));
+}
+
+/**
+ * Get all users (for admin use)
+ * @returns {Promise<Array>} Array of all users (without passwords)
+ */
+export async function getAllUsers() {
+  const allUsers = await db
+    .select({
+      id: users.id,
+      email: users.email,
+      callsign: users.callsign,
+      isAdmin: users.isAdmin,
+      createdAt: users.createdAt,
+      updatedAt: users.updatedAt,
+    })
+    .from(users)
+    .orderBy(users.createdAt);
+
+  return allUsers;
+}
+
+/**
+ * Get user by ID (for admin use)
+ * @param {number} userId - User ID
+ * @returns {Promise<Object|null>} Full user object (without password) or null
+ */
+export async function getUserByIdFull(userId) {
+  const [user] = await db
+    .select({
+      id: users.id,
+      email: users.email,
+      callsign: users.callsign,
+      isAdmin: users.isAdmin,
+      lotwUsername: users.lotwUsername,
+      dclApiKey: users.dclApiKey,
+      createdAt: users.createdAt,
+      updatedAt: users.updatedAt,
+    })
+    .from(users)
+    .where(eq(users.id, userId))
+    .limit(1);
+
+  return user || null;
+}

src/backend/services/awards.service.js

@@ -3,6 +3,7 @@ import { qsos } from '../db/schema/index.js';
 import { eq, and, or, desc, sql } from 'drizzle-orm';
 import { readFileSync } from 'fs';
 import { join } from 'path';
+import { getCachedAwardProgress, setCachedAwardProgress } from './cache.service.js';
 
 /**
  * Awards Service
@@ -27,6 +28,11 @@ function loadAwardDefinitions() {
       'sat-rs44.json',
       'special-stations.json',
       'dld.json',
+      'dld-80m.json',
+      'dld-40m.json',
+      'dld-cw.json',
+      'dld-80m-cw.json',
+      '73-on-73.json',
     ];
 
     for (const file of files) {
@@ -173,9 +179,9 @@ export async function calculateAwardProgress(userId, award, options = {}) {
 async function calculateDOKAwardProgress(userId, award, options = {}) {
   const { includeDetails = false } = options;
   const { rules } = award;
-  const { target, displayField } = rules;
+  const { target, displayField, filters } = rules;
 
-  logger.debug('Calculating DOK-based award progress', { userId, awardId: award.id, target });
+  logger.debug('Calculating DOK-based award progress', { userId, awardId: award.id, target, hasFilters: !!filters });
 
   // Get all QSOs for user
   const allQSOs = await db
@@ -185,10 +191,17 @@ async function calculateDOKAwardProgress(userId, award, options = {}) {
 
   logger.debug('Total QSOs for user', { count: allQSOs.length });
 
+  // Apply filters if defined
+  let filteredQSOs = allQSOs;
+  if (filters) {
+    filteredQSOs = applyFilters(allQSOs, filters);
+    logger.debug('QSOs after DOK award filters', { count: filteredQSOs.length });
+  }
+
   // Track unique (DOK, band, mode) combinations
   const dokCombinations = new Map(); // Key: "DOK/band/mode" -> detail object
 
-  for (const qso of allQSOs) {
+  for (const qso of filteredQSOs) {
     const dok = qso.darcDok;
     if (!dok) continue; // Skip QSOs without DOK
 
@@ -199,11 +212,13 @@ async function calculateDOKAwardProgress(userId, award, options = {}) {
     // Initialize combination if not exists
     if (!dokCombinations.has(combinationKey)) {
       dokCombinations.set(combinationKey, {
+        qsoId: qso.id,
         entity: dok,
         entityId: null,
         entityName: dok,
         band,
         mode,
+        callsign: qso.callsign,
         worked: false,
         confirmed: false,
         qsoDate: qso.qsoDate,
@@ -324,6 +339,7 @@ async function calculatePointsAwardProgress(userId, award, options = {}) {
 
       if (!combinationMap.has(combinationKey)) {
         combinationMap.set(combinationKey, {
+          qsoId: qso.id,
           callsign,
           band,
           mode,
@@ -362,6 +378,7 @@ async function calculatePointsAwardProgress(userId, award, options = {}) {
 
       if (!stationMap.has(callsign)) {
         stationMap.set(callsign, {
+          qsoId: qso.id,
           callsign,
           points,
           worked: true,
@@ -399,6 +416,7 @@ async function calculatePointsAwardProgress(userId, award, options = {}) {
       if (qso.lotwQslRstatus === 'Y') {
         totalPoints += points;
         stationDetails.push({
+          qsoId: qso.id,
           callsign,
           points,
           worked: true,
@@ -435,6 +453,7 @@ async function calculatePointsAwardProgress(userId, award, options = {}) {
     const entities = stationDetails.map((detail) => {
       if (countMode === 'perBandMode') {
         return {
+          qsoId: detail.qsoId,
           entity: `${detail.callsign}/${detail.band}/${detail.mode}`,
           entityId: null,
           entityName: `${detail.callsign} (${detail.band}/${detail.mode})`,
@@ -449,6 +468,7 @@ async function calculatePointsAwardProgress(userId, award, options = {}) {
         };
       } else if (countMode === 'perStation') {
         return {
+          qsoId: detail.qsoId,
           entity: detail.callsign,
           entityId: null,
           entityName: detail.callsign,
@@ -463,6 +483,7 @@ async function calculatePointsAwardProgress(userId, award, options = {}) {
         };
       } else {
         return {
+          qsoId: detail.qsoId,
           entity: `${detail.callsign}-${detail.qsoDate}`,
           entityId: null,
           entityName: `${detail.callsign} on ${detail.qsoDate}`,
@@ -566,6 +587,15 @@ function matchesFilter(qso, filter) {
  * Get award progress with QSO details
  */
 export async function getAwardProgressDetails(userId, awardId) {
+  // Check cache first
+  const cached = getCachedAwardProgress(userId, awardId);
+  if (cached) {
+    logger.debug(`Cache hit for award ${awardId}, user ${userId}`);
+    return cached;
+  }
+
+  logger.debug(`Cache miss for award ${awardId}, user ${userId} - calculating...`);
+
   // Get award definition
   const definitions = loadAwardDefinitions();
   const award = definitions.find((def) => def.id === awardId);
@@ -577,7 +607,7 @@ export async function getAwardProgressDetails(userId, awardId) {
   // Calculate progress
   const progress = await calculateAwardProgress(userId, award);
 
-  return {
+  const result = {
     award: {
       id: award.id,
       name: award.name,
@@ -587,6 +617,11 @@ export async function getAwardProgressDetails(userId, awardId) {
     },
     ...progress,
   };
+
+  // Store in cache
+  setCachedAwardProgress(userId, awardId, result);
+
+  return result;
 }
 
 /**
@@ -662,6 +697,7 @@ export async function getAwardEntityBreakdown(userId, awardId) {
       }
 
       entityMap.set(entity, {
+        qsoId: qso.id,
         entity,
         entityId: qso.entityId,
         entityName: displayName,

src/backend/services/cache.service.js

@@ -0,0 +1,275 @@
+/**
+ * Cache Service for Award Progress
+ *
+ * Provides in-memory caching for award progress calculations to avoid
+ * expensive database aggregations on every request.
+ *
+ * Cache TTL: 5 minutes (balances freshness with performance)
+ *
+ * Usage:
+ *   - Check cache before calculating award progress
+ *   - Invalidate cache when QSOs are synced/updated
+ *   - Automatic expiry after TTL
+ */
+
+const awardCache = new Map();
+const statsCache = new Map();
+const CACHE_TTL = 5 * 60 * 1000; // 5 minutes
+
+/**
+ * Get cached award progress if available and not expired
+ * @param {number} userId - User ID
+ * @param {string} awardId - Award ID
+ * @returns {object|null} Cached progress data or null if not found/expired
+ */
+export function getCachedAwardProgress(userId, awardId) {
+  const key = `${userId}:${awardId}`;
+  const cached = awardCache.get(key);
+
+  if (!cached) {
+    recordAwardCacheMiss();
+    return null;
+  }
+
+  // Check if cache has expired
+  const age = Date.now() - cached.timestamp;
+  if (age > CACHE_TTL) {
+    awardCache.delete(key);
+    recordAwardCacheMiss();
+    return null;
+  }
+
+  recordAwardCacheHit();
+  return cached.data;
+}
+
+/**
+ * Set award progress in cache
+ * @param {number} userId - User ID
+ * @param {string} awardId - Award ID
+ * @param {object} data - Award progress data to cache
+ */
+export function setCachedAwardProgress(userId, awardId, data) {
+  const key = `${userId}:${awardId}`;
+  awardCache.set(key, {
+    data,
+    timestamp: Date.now()
+  });
+}
+
+/**
+ * Invalidate all cached awards for a specific user
+ * Call this after syncing or updating QSOs
+ * @param {number} userId - User ID
+ */
+export function invalidateUserCache(userId) {
+  const prefix = `${userId}:`;
+  let deleted = 0;
+
+  for (const [key] of awardCache) {
+    if (key.startsWith(prefix)) {
+      awardCache.delete(key);
+      deleted++;
+    }
+  }
+
+  return deleted;
+}
+
+/**
+ * Clear all cached awards (use sparingly)
+ *主要用于测试或紧急情况
+ */
+export function clearAllCache() {
+  const size = awardCache.size;
+  awardCache.clear();
+  return size;
+}
+
+/**
+ * Get cache statistics (for monitoring/debugging)
+ * @returns {object} Cache stats
+ */
+export function getCacheStats() {
+  const now = Date.now();
+  let expired = 0;
+  let valid = 0;
+
+  for (const [, value] of awardCache) {
+    const age = now - value.timestamp;
+    if (age > CACHE_TTL) {
+      expired++;
+    } else {
+      valid++;
+    }
+  }
+
+  return {
+    total: awardCache.size,
+    valid,
+    expired,
+    ttl: CACHE_TTL
+  };
+}
+
+/**
+ * Clean up expired cache entries (maintenance function)
+ * Can be called periodically to free memory
+ * @returns {number} Number of entries cleaned up
+ */
+export function cleanupExpiredCache() {
+  const now = Date.now();
+  let cleaned = 0;
+
+  for (const [key, value] of awardCache) {
+    const age = now - value.timestamp;
+    if (age > CACHE_TTL) {
+      awardCache.delete(key);
+      cleaned++;
+    }
+  }
+
+  for (const [key, value] of statsCache) {
+    const age = now - value.timestamp;
+    if (age > CACHE_TTL) {
+      statsCache.delete(key);
+      cleaned++;
+    }
+  }
+
+  return cleaned;
+}
+
+/**
+ * Get cached QSO statistics if available and not expired
+ * @param {number} userId - User ID
+ * @returns {object|null} Cached stats data or null if not found/expired
+ */
+export function getCachedStats(userId) {
+  const key = `stats_${userId}`;
+  const cached = statsCache.get(key);
+
+  if (!cached) {
+    recordStatsCacheMiss();
+    return null;
+  }
+
+  // Check if cache has expired
+  const age = Date.now() - cached.timestamp;
+  if (age > CACHE_TTL) {
+    statsCache.delete(key);
+    recordStatsCacheMiss();
+    return null;
+  }
+
+  recordStatsCacheHit();
+  return cached.data;
+}
+
+/**
+ * Set QSO statistics in cache
+ * @param {number} userId - User ID
+ * @param {object} data - Statistics data to cache
+ */
+export function setCachedStats(userId, data) {
+  const key = `stats_${userId}`;
+  statsCache.set(key, {
+    data,
+    timestamp: Date.now()
+  });
+}
+
+/**
+ * Invalidate cached QSO statistics for a specific user
+ * Call this after syncing or updating QSOs
+ * @param {number} userId - User ID
+ * @returns {boolean} True if cache was invalidated
+ */
+export function invalidateStatsCache(userId) {
+  const key = `stats_${userId}`;
+  const deleted = statsCache.delete(key);
+  return deleted;
+}
+
+/**
+ * Get cache statistics including both award and stats caches
+ * @returns {object} Cache stats
+ */
+export function getCacheStats() {
+  const now = Date.now();
+  let expired = 0;
+  let valid = 0;
+
+  for (const [, value] of awardCache) {
+    const age = now - value.timestamp;
+    if (age > CACHE_TTL) {
+      expired++;
+    } else {
+      valid++;
+    }
+  }
+
+  for (const [, value] of statsCache) {
+    const age = now - value.timestamp;
+    if (age > CACHE_TTL) {
+      expired++;
+    } else {
+      valid++;
+    }
+  }
+
+  const totalRequests = awardCacheStats.hits + awardCacheStats.misses + statsCacheStats.hits + statsCacheStats.misses;
+  const hitRate = totalRequests > 0 ? ((awardCacheStats.hits + statsCacheStats.hits) / totalRequests * 100).toFixed(2) + '%' : '0%';
+
+  return {
+    total: awardCache.size + statsCache.size,
+    valid,
+    expired,
+    ttl: CACHE_TTL,
+    hitRate,
+    awardCache: {
+      size: awardCache.size,
+      hits: awardCacheStats.hits,
+      misses: awardCacheStats.misses
+    },
+    statsCache: {
+      size: statsCache.size,
+      hits: statsCacheStats.hits,
+      misses: statsCacheStats.misses
+    }
+  };
+}
+
+/**
+ * Cache statistics tracking
+ */
+const awardCacheStats = { hits: 0, misses: 0 };
+const statsCacheStats = { hits: 0, misses: 0 };
+
+/**
+ * Record a cache hit for awards
+ */
+export function recordAwardCacheHit() {
+  awardCacheStats.hits++;
+}
+
+/**
+ * Record a cache miss for awards
+ */
+export function recordAwardCacheMiss() {
+  awardCacheStats.misses++;
+}
+
+/**
+ * Record a cache hit for stats
+ */
+export function recordStatsCacheHit() {
+  statsCacheStats.hits++;
+}
+
+/**
+ * Record a cache miss for stats
+ */
+export function recordStatsCacheMiss() {
+  statsCacheStats.misses++;
+}

src/backend/services/dcl.service.js

@@ -1,192 +1,490 @@
 import { db, logger } from '../config.js';
-import { qsos } from '../db/schema/index.js';
+import { qsos, qsoChanges } from '../db/schema/index.js';
 import { max, sql, eq, and, desc } from 'drizzle-orm';
 import { updateJobProgress } from './job-queue.service.js';
+import { parseDCLResponse, normalizeBand, normalizeMode } from '../utils/adif-parser.js';
+import { invalidateUserCache, invalidateStatsCache } from './cache.service.js';
 
 /**
  * DCL (DARC Community Logbook) Service
  *
- * NOTE: DCL does not currently have a public API for downloading QSOs.
- * This service is prepared as a stub for when DCL adds API support.
- *
- * When DCL provides an API, implement:
- * - fetchQSOsFromDCL() - Download QSOs from DCL
- * - syncQSOs() - Sync QSOs to database
- * - getLastDCLQSLDate() - Get last QSL date for incremental sync
- *
  * DCL Information:
  * - Website: https://dcl.darc.de/
- * - ADIF Export: https://dcl.darc.de/dml/export_adif_form.php (manual only)
+ * - API Endpoint: https://dings.dcl.darc.de/api/adiexport
  * - DOK fields: MY_DARC_DOK (user's DOK), DARC_DOK (partner's DOK)
+ *
+ * API Request Format (POST):
+ * {
+ *   "key": "API_KEY",
+ *   "limit": null,
+ *   "qsl_since": null,
+ *   "qso_since": null,
+ *   "cnf_only": null
+ * }
+ *
+ * Expected API Response Format:
+ * {
+ *   "adif": "<ADIF_VER:5>3.1.3\\n<CREATED_TIMESTAMP:15>20260117 095453\\n<EOH>\\n..."
+ * }
  */
 
+const REQUEST_TIMEOUT = 60000;
+const DCL_API_URL = 'https://dings.dcl.darc.de/api/adiexport';
+
 /**
- * Fetch QSOs from DCL
+ * Fetch QSOs from DCL API
- *
- * TODO: Implement when DCL provides a download API
- * Expected implementation:
- * - Use DCL API key for authentication
- * - Fetch ADIF data with confirmations
- * - Parse and return QSO records
  *
  * @param {string} dclApiKey - DCL API key
  * @param {Date|null} sinceDate - Last sync date for incremental sync
  * @returns {Promise<Array>} Array of parsed QSO records
  */
 export async function fetchQSOsFromDCL(dclApiKey, sinceDate = null) {
-  logger.info('DCL sync not yet implemented - API endpoint not available', {
+  logger.info('Fetching QSOs from DCL', {
+    hasApiKey: !!dclApiKey,
     sinceDate: sinceDate?.toISOString(),
   });
 
-  throw new Error('DCL download API is not yet available. DCL does not currently provide a public API for downloading QSOs. Use the manual ADIF export at https://dcl.darc.de/dml/export_adif_form.php');
+  // Build request body
+  const requestBody = {
+    key: dclApiKey,
+    limit: 50000,
+    qsl_since: null,
+    qso_since: null,
+    cnf_only: null,
+  };
 
-  /*
+  // Add date filter for incremental sync if provided
-   * FUTURE IMPLEMENTATION (when DCL provides API):
+  if (sinceDate) {
-   *
+    const dateStr = sinceDate.toISOString().split('T')[0].replace(/-/g, '');
-   * const url = 'https://dcl.darc.de/api/...'; // TBA
+    requestBody.qsl_since = dateStr;
-   *
+  }
-   * const params = new URLSearchParams({
+
-   *   api_key: dclApiKey,
+  // Debug log request parameters (redact API key)
-   *   format: 'adif',
+  logger.debug('DCL API request parameters', {
-   *   qsl: 'yes',
+    url: DCL_API_URL,
-   * });
+    method: 'POST',
-   *
+    key: dclApiKey ? `${dclApiKey.substring(0, 4)}...${dclApiKey.substring(dclApiKey.length - 4)}` : null,
-   * if (sinceDate) {
+    limit: requestBody.limit,
-   *   const dateStr = sinceDate.toISOString().split('T')[0].replace(/-/g, '');
+    qsl_since: requestBody.qsl_since,
-   *   params.append('qso_qslsince', dateStr);
+    qso_since: requestBody.qso_since,
-   * }
+    cnf_only: requestBody.cnf_only,
-   *
+  });
-   * const response = await fetch(`${url}?${params}`, {
+
-   *   headers: {
+  try {
-   *     'Accept': 'text/plain',
+    const controller = new AbortController();
-   *   },
+    const timeoutId = setTimeout(() => controller.abort(), REQUEST_TIMEOUT);
-   *   timeout: REQUEST_TIMEOUT,
+
-   * });
+    const response = await fetch(DCL_API_URL, {
-   *
+      method: 'POST',
-   * if (!response.ok) {
+      signal: controller.signal,
-   *   throw new Error(`DCL API error: ${response.status}`);
+      headers: {
-   * }
+        'Content-Type': 'application/json',
-   *
+        'Accept': 'application/json',
-   * const adifData = await response.text();
+      },
-   * return parseADIF(adifData);
+      body: JSON.stringify(requestBody),
-   */
+    });
+
+    clearTimeout(timeoutId);
+
+    if (!response.ok) {
+      if (response.status === 401) {
+        throw new Error('Invalid DCL API key. Please check your DCL credentials in Settings.');
+      } else if (response.status === 404) {
+        throw new Error('DCL API endpoint not found.');
+      } else {
+        const errorText = await response.text();
+        throw new Error(`DCL API error: ${response.status} ${response.statusText} - ${errorText}`);
+      }
+    }
+
+    const data = await response.json();
+
+    // Parse the DCL response format
+    const qsos = parseDCLResponse(data);
+
+    logger.info('Successfully fetched QSOs from DCL', {
+      total: qsos.length,
+      hasConfirmations: qsos.filter(q => q.dcl_qsl_rcvd === 'Y').length,
+    });
+
+    return qsos;
+
+  } catch (error) {
+    if (error.name === 'AbortError') {
+      throw new Error('DCL API request timed out. Please try again.');
+    }
+
+    logger.error('Failed to fetch from DCL', {
+      error: error.message,
+    });
+
+    throw error;
+  }
 }
 
 /**
- * Parse ADIF data from DCL
+ * Parse DCL API response from JSON
+ * Can be used for testing with example payloads
  *
- * TODO: Implement ADIF parser for DCL format
+ * @param {Object} jsonResponse - JSON response in DCL format
- * Should handle DCL-specific fields:
- * - MY_DARC_DOK
- * - DARC_DOK
- *
- * @param {string} adifData - Raw ADIF data
  * @returns {Array} Array of parsed QSO records
  */
-function parseADIF(adifData) {
+export function parseDCLJSONResponse(jsonResponse) {
-  // TODO: Implement ADIF parser
+  return parseDCLResponse(jsonResponse);
-  // Should parse standard ADIF fields plus DCL-specific fields:
-  // - MY_DARC_DOK (user's own DOK)
-  // - DARC_DOK (QSO partner's DOK)
-  // - QSL_DATE (confirmation date from DCL)
-
-  return [];
 }
 
 /**
- * Sync QSOs from DCL to database
+ * Convert DCL ADIF QSO to database format
- *
+ * @param {Object} adifQSO - Parsed ADIF QSO record
- * TODO: Implement when DCL provides API
+ * @param {number} userId - User ID
+ * @returns {Object} Database-ready QSO object
+ */
+function convertQSODatabaseFormat(adifQSO, userId) {
+  return {
+    userId,
+    callsign: adifQSO.call || '',
+    qsoDate: adifQSO.qso_date || '',
+    timeOn: adifQSO.time_on || adifQSO.time_off || '000000',
+    band: normalizeBand(adifQSO.band),
+    mode: normalizeMode(adifQSO.mode),
+    freq: adifQSO.freq ? parseInt(adifQSO.freq) : null,
+    freqRx: adifQSO.freq_rx ? parseInt(adifQSO.freq_rx) : null,
+    // DCL may or may not include DXCC fields - use them if available
+    entity: adifQSO.country || adifQSO.dxcc_country || '',
+    entityId: adifQSO.dxcc ? parseInt(adifQSO.dxcc) : null,
+    grid: adifQSO.gridsquare || '',
+    gridSource: adifQSO.gridsquare ? 'DCL' : null,
+    continent: adifQSO.continent || '',
+    cqZone: adifQSO.cq_zone ? parseInt(adifQSO.cq_zone) : null,
+    ituZone: adifQSO.itu_zone ? parseInt(adifQSO.itu_zone) : null,
+    state: adifQSO.state || adifQSO.us_state || '',
+    county: adifQSO.county || '',
+    satName: adifQSO.sat_name || '',
+    satMode: adifQSO.sat_mode || '',
+    myDarcDok: adifQSO.my_darc_dok || '',
+    darcDok: adifQSO.darc_dok || '',
+    // DCL confirmation fields
+    dclQslRdate: adifQSO.dcl_qslrdate || '',
+    dclQslRstatus: adifQSO.dcl_qsl_rcvd || 'N',
+  };
+}
+
+/**
+ * Yield to event loop to allow other requests to be processed
+ * This prevents blocking the server during long-running sync operations
+ */
+function yieldToEventLoop() {
+  return new Promise(resolve => setImmediate(resolve));
+}
+
+/**
+ * Get QSO key for duplicate detection
+ */
+function getQSOKey(qso) {
+  return `${qso.callsign}|${qso.qsoDate}|${qso.timeOn}|${qso.band}|${qso.mode}`;
+}
+
+/**
+ * Sync QSOs from DCL to database (optimized with batch operations)
+ * Updates existing QSOs with DCL confirmation data
  *
  * @param {number} userId - User ID
  * @param {string} dclApiKey - DCL API key
- * @param {Date|null} sinceDate - Last sync date
+ * @param {Date|null} sinceDate - Last sync date for incremental sync
  * @param {number|null} jobId - Job ID for progress tracking
  * @returns {Promise<Object>} Sync results
  */
 export async function syncQSOs(userId, dclApiKey, sinceDate = null, jobId = null) {
-  logger.info('DCL sync not yet implemented', { userId, sinceDate, jobId });
+  logger.info('Starting DCL sync', { userId, sinceDate, jobId });
 
-  throw new Error('DCL download API is not yet available');
+  if (jobId) {
+    await updateJobProgress(jobId, {
+      message: 'Fetching QSOs from DCL...',
+      step: 'fetch',
+    });
+  }
 
-  /*
+  try {
-   * FUTURE IMPLEMENTATION:
+    const adifQSOs = await fetchQSOsFromDCL(dclApiKey, sinceDate);
-   *
+
-   * try {
+    if (!Array.isArray(adifQSOs) || adifQSOs.length === 0) {
-   *   const adifQSOs = await fetchQSOsFromDCL(dclApiKey, sinceDate);
+      logger.info('No QSOs found in DCL response', { userId });
-   *
+      return {
-   *   let addedCount = 0;
+        success: true,
-   *   let updatedCount = 0;
+        total: 0,
-   *   let errors = [];
+        added: 0,
-   *
+        updated: 0,
-   *   for (const adifQSO of adifQSOs) {
+        message: 'No QSOs found in DCL',
-   *     try {
+      };
-   *       // Map ADIF fields to database schema
+    }
-   *       const qsoData = mapADIFToDB(adifQSO);
+
-   *
+    if (jobId) {
-   *       // Check if QSO already exists
+      await updateJobProgress(jobId, {
-   *       const existing = await db.select()
+        message: `Processing ${adifQSOs.length} QSOs from DCL...`,
-   *         .from(qsos)
+        step: 'process',
-   *         .where(
+        total: adifQSOs.length,
-   *           and(
+        processed: 0,
-   *             eq(qsos.userId, userId),
+      });
-   *             eq(qsos.callsign, adifQSO.call),
+    }
-   *             eq(qsos.qsoDate, adifQSO.qso_date),
+
-   *             eq(qsos.timeOn, adifQSO.time_on)
+    let addedCount = 0;
-   *           )
+    let updatedCount = 0;
-   *         )
+    let skippedCount = 0;
-   *         .limit(1);
+    const errors = [];
-   *
+    const addedQSOs = [];
-   *       if (existing.length > 0) {
+    const updatedQSOs = [];
-   *         // Update existing QSO with DCL confirmation
+
-   *         await db.update(qsos)
+    // Convert all QSOs to database format
-   *           .set({
+    const dbQSOs = adifQSOs.map(qso => convertQSODatabaseFormat(qso, userId));
-   *             dclQslRdate: adifQSO.qslrdate || null,
+
-   *             dclQslRstatus: adifQSO.qslrdate ? 'Y' : 'N',
+    // Batch size for processing
-   *             darcDok: adifQSO.darc_dok || null,
+    const BATCH_SIZE = 100;
-   *             myDarcDok: adifQSO.my_darc_dok || null,
+    const totalBatches = Math.ceil(dbQSOs.length / BATCH_SIZE);
-   *           })
+
-   *           .where(eq(qsos.id, existing[0].id));
+    for (let batchNum = 0; batchNum < totalBatches; batchNum++) {
-   *         updatedCount++;
+      const startIdx = batchNum * BATCH_SIZE;
-   *       } else {
+      const endIdx = Math.min(startIdx + BATCH_SIZE, dbQSOs.length);
-   *         // Insert new QSO
+      const batch = dbQSOs.slice(startIdx, endIdx);
-   *         await db.insert(qsos).values({
+
-   *           userId,
+      // Get unique callsigns and dates from batch
-   *           ...qsoData,
+      const batchCallsigns = [...new Set(batch.map(q => q.callsign))];
-   *           dclQslRdate: adifQSO.qslrdate || null,
+      const batchDates = [...new Set(batch.map(q => q.qsoDate))];
-   *           dclQslRstatus: adifQSO.qslrdate ? 'Y' : 'N',
+
-   *         });
+      // Fetch all existing QSOs that could match this batch in one query
-   *         addedCount++;
+      const existingQSOs = await db
-   *       }
+        .select()
-   *     } catch (err) {
+        .from(qsos)
-   *       logger.error('Failed to process QSO', { error: err.message, qso: adifQSO });
+        .where(
-   *       errors.push(err.message);
+          and(
-   *     }
+            eq(qsos.userId, userId),
-   *   }
+            // Match callsigns OR dates from this batch
-   *
+            sql`(${qsos.callsign} IN ${batchCallsigns} OR ${qsos.qsoDate} IN ${batchDates})`
-   *   const result = {
+          )
-   *     success: true,
+        );
-   *     total: adifQSOs.length,
+
-   *     added: addedCount,
+      // Build lookup map for existing QSOs
-   *     updated: updatedCount,
+      const existingMap = new Map();
-   *     errors,
+      for (const existing of existingQSOs) {
-   *   };
+        const key = getQSOKey(existing);
-   *
+        existingMap.set(key, existing);
-   *   logger.info('DCL sync completed', { ...result, jobId });
+      }
-   *   return result;
+
-   *
+      // Process batch
-   * } catch (error) {
+      const toInsert = [];
-   *   logger.error('DCL sync failed', { error: error.message, userId, jobId });
+      const toUpdate = [];
-   *   return { success: false, error: error.message, total: 0, added: 0, updated: 0 };
+      const changeRecords = [];
-   * }
+
-   */
+      for (const dbQSO of batch) {
+        try {
+          const key = getQSOKey(dbQSO);
+          const existingQSO = existingMap.get(key);
+
+          if (existingQSO) {
+            // Check if DCL confirmation or DOK data has changed
+            const dataChanged =
+              existingQSO.dclQslRstatus !== dbQSO.dclQslRstatus ||
+              existingQSO.dclQslRdate !== dbQSO.dclQslRdate ||
+              existingQSO.darcDok !== (dbQSO.darcDok || existingQSO.darcDok) ||
+              existingQSO.myDarcDok !== (dbQSO.myDarcDok || existingQSO.myDarcDok) ||
+              existingQSO.grid !== (dbQSO.grid || existingQSO.grid);
+
+            if (dataChanged) {
+              // Build update data
+              const updateData = {
+                dclQslRdate: dbQSO.dclQslRdate,
+                dclQslRstatus: dbQSO.dclQslRstatus,
+              };
+
+              // Only add DOK fields if DCL sent them
+              if (dbQSO.darcDok) updateData.darcDok = dbQSO.darcDok;
+              if (dbQSO.myDarcDok) updateData.myDarcDok = dbQSO.myDarcDok;
+
+              // Only update grid if DCL sent one
+              if (dbQSO.grid) {
+                updateData.grid = dbQSO.grid;
+                updateData.gridSource = dbQSO.gridSource;
+              }
+
+              // DXCC priority: LoTW > DCL
+              // Only update entity fields from DCL if:
+              // 1. QSO is NOT LoTW confirmed, AND
+              // 2. DCL actually sent entity data, AND
+              // 3. Current entity is missing
+              const hasLoTWConfirmation = existingQSO.lotwQslRstatus === 'Y';
+              const hasDCLData = dbQSO.entity || dbQSO.entityId;
+              const missingEntity = !existingQSO.entity || existingQSO.entity === '';
+
+              if (!hasLoTWConfirmation && hasDCLData && missingEntity) {
+                if (dbQSO.entity) updateData.entity = dbQSO.entity;
+                if (dbQSO.entityId) updateData.entityId = dbQSO.entityId;
+                if (dbQSO.continent) updateData.continent = dbQSO.continent;
+                if (dbQSO.cqZone) updateData.cqZone = dbQSO.cqZone;
+                if (dbQSO.ituZone) updateData.ituZone = dbQSO.ituZone;
+              }
+
+              toUpdate.push({
+                id: existingQSO.id,
+                data: updateData,
+              });
+
+              // Track change for rollback
+              if (jobId) {
+                changeRecords.push({
+                  jobId,
+                  qsoId: existingQSO.id,
+                  changeType: 'updated',
+                  beforeData: JSON.stringify({
+                    dclQslRstatus: existingQSO.dclQslRstatus,
+                    dclQslRdate: existingQSO.dclQslRdate,
+                    darcDok: existingQSO.darcDok,
+                    myDarcDok: existingQSO.myDarcDok,
+                    grid: existingQSO.grid,
+                    gridSource: existingQSO.gridSource,
+                    entity: existingQSO.entity,
+                    entityId: existingQSO.entityId,
+                  }),
+                  afterData: JSON.stringify({
+                    dclQslRstatus: dbQSO.dclQslRstatus,
+                    dclQslRdate: dbQSO.dclQslRdate,
+                    darcDok: updateData.darcDok,
+                    myDarcDok: updateData.myDarcDok,
+                    grid: updateData.grid,
+                    gridSource: updateData.gridSource,
+                    entity: updateData.entity,
+                    entityId: updateData.entityId,
+                  }),
+                });
+              }
+
+              updatedQSOs.push({
+                id: existingQSO.id,
+                callsign: dbQSO.callsign,
+                date: dbQSO.qsoDate,
+                band: dbQSO.band,
+                mode: dbQSO.mode,
+              });
+              updatedCount++;
+            } else {
+              skippedCount++;
+            }
+          } else {
+            // New QSO to insert
+            toInsert.push(dbQSO);
+            addedQSOs.push({
+              callsign: dbQSO.callsign,
+              date: dbQSO.qsoDate,
+              band: dbQSO.band,
+              mode: dbQSO.mode,
+            });
+            addedCount++;
+          }
+        } catch (error) {
+          logger.error('Failed to process DCL QSO in batch', {
+            error: error.message,
+            qso: dbQSO,
+            userId,
+          });
+          errors.push({ qso: dbQSO, error: error.message });
+        }
+      }
+
+      // Batch insert new QSOs
+      if (toInsert.length > 0) {
+        const inserted = await db.insert(qsos).values(toInsert).returning();
+        // Track inserted QSOs with their IDs for change tracking
+        if (jobId) {
+          for (let i = 0; i < inserted.length; i++) {
+            changeRecords.push({
+              jobId,
+              qsoId: inserted[i].id,
+              changeType: 'added',
+              beforeData: null,
+              afterData: JSON.stringify({
+                callsign: toInsert[i].callsign,
+                qsoDate: toInsert[i].qsoDate,
+                timeOn: toInsert[i].timeOn,
+                band: toInsert[i].band,
+                mode: toInsert[i].mode,
+              }),
+            });
+            // Update addedQSOs with actual IDs
+            addedQSOs[addedCount - inserted.length + i].id = inserted[i].id;
+          }
+        }
+      }
+
+      // Batch update existing QSOs
+      if (toUpdate.length > 0) {
+        for (const update of toUpdate) {
+          await db
+            .update(qsos)
+            .set(update.data)
+            .where(eq(qsos.id, update.id));
+        }
+      }
+
+      // Batch insert change records
+      if (changeRecords.length > 0) {
+        await db.insert(qsoChanges).values(changeRecords);
+      }
+
+      // Update job progress after each batch
+      if (jobId) {
+        await updateJobProgress(jobId, {
+          processed: endIdx,
+          message: `Processed ${endIdx}/${dbQSOs.length} QSOs from DCL...`,
+        });
+      }
+
+      // Yield to event loop after each batch to allow other requests
+      await yieldToEventLoop();
+    }
+
+    const result = {
+      success: true,
+      total: dbQSOs.length,
+      added: addedCount,
+      updated: updatedCount,
+      skipped: skippedCount,
+      addedQSOs,
+      updatedQSOs,
+      confirmed: adifQSOs.filter(q => q.dcl_qsl_rcvd === 'Y').length,
+      errors: errors.length > 0 ? errors : undefined,
+    };
+
+    logger.info('DCL sync completed', {
+      ...result,
+      userId,
+      jobId,
+    });
+
+    // Invalidate award cache for this user since QSOs may have changed
+    const deletedCache = invalidateUserCache(userId);
+    invalidateStatsCache(userId);
+    logger.debug(`Invalidated ${deletedCache} cached award entries and stats cache for user ${userId}`);
+
+    return result;
+
+  } catch (error) {
+    logger.error('DCL sync failed', {
+      error: error.message,
+      userId,
+      jobId,
+    });
+
+    return {
+      success: false,
+      error: error.message,
+      total: 0,
+      added: 0,
+      updated: 0,
+    };
+  }
 }
 
 /**
  * Get last DCL QSL date for incremental sync
  *
- * TODO: Implement when DCL provides API
- *
  * @param {number} userId - User ID
  * @returns {Promise<Date|null>} Last QSL date or null
  */

src/backend/services/job-queue.service.js

@@ -1,6 +1,6 @@
 import { db, logger } from '../config.js';
-import { syncJobs } from '../db/schema/index.js';
+import { syncJobs, qsoChanges, qsos } from '../db/schema/index.js';
-import { eq, and, or, lt } from 'drizzle-orm';
+import { eq, and, or, lt, desc } from 'drizzle-orm';
 
 /**
  * Simplified Background Job Queue Service
@@ -19,20 +19,21 @@ export const JobStatus = {
 const activeJobs = new Map();
 
 /**
- * Enqueue a new LoTW sync job
+ * Enqueue a new sync job
  * @param {number} userId - User ID
+ * @param {string} jobType - Type of job ('lotw_sync' or 'dcl_sync')
  * @returns {Promise<Object>} Job object with ID
  */
-export async function enqueueJob(userId) {
+export async function enqueueJob(userId, jobType = 'lotw_sync') {
-  logger.debug('Enqueueing LoTW sync job', { userId });
+  logger.debug('Enqueueing sync job', { userId, jobType });
 
-  // Check for existing active job
+  // Check for existing active job of the same type
-  const existingJob = await getUserActiveJob(userId);
+  const existingJob = await getUserActiveJob(userId, jobType);
   if (existingJob) {
-    logger.debug('Existing active job found', { jobId: existingJob.id });
+    logger.debug('Existing active job found', { jobId: existingJob.id, jobType });
     return {
       success: false,
-      error: 'A LoTW sync job is already running or pending for this user',
+      error: `A ${jobType} job is already running or pending for this user`,
       existingJob: existingJob.id,
     };
   }
@@ -42,16 +43,16 @@ export async function enqueueJob(userId) {
     .insert(syncJobs)
     .values({
       userId,
-      type: 'lotw_sync',
+      type: jobType,
       status: JobStatus.PENDING,
       createdAt: new Date(),
     })
     .returning();
 
-  logger.info('Job created', { jobId: job.id, userId });
+  logger.info('Job created', { jobId: job.id, userId, jobType });
 
   // Start processing asynchronously (don't await)
-  processJobAsync(job.id, userId).catch((error) => {
+  processJobAsync(job.id, userId, jobType).catch((error) => {
     logger.error(`Job processing error`, { jobId: job.id, error: error.message });
   });
 
@@ -68,15 +69,14 @@ export async function enqueueJob(userId) {
 }
 
 /**
- * Process a LoTW sync job asynchronously
+ * Process a sync job asynchronously
  * @param {number} jobId - Job ID
  * @param {number} userId - User ID
+ * @param {string} jobType - Type of job ('lotw_sync' or 'dcl_sync')
  */
-async function processJobAsync(jobId, userId) {
+async function processJobAsync(jobId, userId, jobType) {
   const jobPromise = (async () => {
     try {
-      // Import dynamically to avoid circular dependency
-      const { syncQSOs } = await import('./lotw.service.js');
       const { getUserById } = await import('./auth.service.js');
 
       // Update status to running
@@ -85,8 +85,42 @@ async function processJobAsync(jobId, userId) {
         startedAt: new Date(),
       });
 
+      let result;
+
+      if (jobType === 'dcl_sync') {
         // Get user credentials
         const user = await getUserById(userId);
+        if (!user || !user.dclApiKey) {
+          await updateJob(jobId, {
+            status: JobStatus.FAILED,
+            completedAt: new Date(),
+            error: 'DCL credentials not configured',
+          });
+          return null;
+        }
+
+        // Get last QSL date for incremental sync
+        const { getLastDCLQSLDate, syncQSOs: syncDCLQSOs } = await import('./dcl.service.js');
+        const lastQSLDate = await getLastDCLQSLDate(userId);
+        const sinceDate = lastQSLDate || new Date('2000-01-01');
+
+        if (lastQSLDate) {
+          logger.info(`Job ${jobId}: DCL incremental sync`, { since: sinceDate.toISOString().split('T')[0] });
+        } else {
+          logger.info(`Job ${jobId}: DCL full sync`);
+        }
+
+        // Update job progress
+        await updateJobProgress(jobId, {
+          message: 'Fetching QSOs from DCL...',
+          step: 'fetch',
+        });
+
+        // Execute the sync
+        result = await syncDCLQSOs(userId, user.dclApiKey, sinceDate, jobId);
+      } else {
+        // LoTW sync (default)
+        const user = await getUserById(userId);
         if (!user || !user.lotwUsername || !user.lotwPassword) {
           await updateJob(jobId, {
             status: JobStatus.FAILED,
@@ -97,14 +131,14 @@ async function processJobAsync(jobId, userId) {
         }
 
         // Get last QSL date for incremental sync
-      const { getLastLoTWQSLDate } = await import('./lotw.service.js');
+        const { getLastLoTWQSLDate, syncQSOs } = await import('./lotw.service.js');
         const lastQSLDate = await getLastLoTWQSLDate(userId);
         const sinceDate = lastQSLDate || new Date('2000-01-01');
 
         if (lastQSLDate) {
-        logger.info(`Job ${jobId}: Incremental sync`, { since: sinceDate.toISOString().split('T')[0] });
+          logger.info(`Job ${jobId}: LoTW incremental sync`, { since: sinceDate.toISOString().split('T')[0] });
         } else {
-        logger.info(`Job ${jobId}: Full sync`);
+          logger.info(`Job ${jobId}: LoTW full sync`);
         }
 
         // Update job progress
@@ -114,7 +148,8 @@ async function processJobAsync(jobId, userId) {
         });
 
         // Execute the sync
-      const result = await syncQSOs(userId, user.lotwUsername, user.lotwPassword, sinceDate, jobId);
+        result = await syncQSOs(userId, user.lotwUsername, user.lotwPassword, sinceDate, jobId);
+      }
 
       // Update job as completed
       await updateJob(jobId, {
@@ -197,9 +232,10 @@ export async function getJobStatus(jobId) {
 /**
  * Get user's active job (pending or running)
  * @param {number} userId - User ID
+ * @param {string} jobType - Optional job type filter
  * @returns {Promise<Object|null>} Active job or null
  */
-export async function getUserActiveJob(userId) {
+export async function getUserActiveJob(userId, jobType = null) {
   const conditions = [
     eq(syncJobs.userId, userId),
     or(
@@ -208,11 +244,15 @@ export async function getUserActiveJob(userId) {
     ),
   ];
 
+  if (jobType) {
+    conditions.push(eq(syncJobs.type, jobType));
+  }
+
   const [job] = await db
     .select()
     .from(syncJobs)
     .where(and(...conditions))
-    .orderBy(syncJobs.createdAt)
+    .orderBy(desc(syncJobs.createdAt))
     .limit(1);
 
   return job || null;
@@ -229,7 +269,7 @@ export async function getUserJobs(userId, limit = 10) {
     .select()
     .from(syncJobs)
     .where(eq(syncJobs.userId, userId))
-    .orderBy(syncJobs.createdAt)
+    .orderBy(desc(syncJobs.createdAt))
     .limit(limit);
 
   return jobs.map((job) => {
@@ -302,3 +342,110 @@ export async function updateJobProgress(jobId, progressData) {
     result: JSON.stringify(updatedData),
   });
 }
+
+/**
+ * Cancel and rollback a sync job
+ * Deletes added QSOs and restores updated QSOs to their previous state
+ * @param {number} jobId - Job ID to cancel
+ * @param {number} userId - User ID (for security check)
+ * @returns {Promise<Object>} Result of cancellation
+ */
+export async function cancelJob(jobId, userId) {
+  logger.info('Cancelling job', { jobId, userId });
+
+  // Get job to verify ownership
+  const job = await getJob(jobId);
+  if (!job) {
+    return { success: false, error: 'Job not found' };
+  }
+
+  // Verify user owns this job
+  if (job.userId !== userId) {
+    return { success: false, error: 'Forbidden' };
+  }
+
+  // Only allow cancelling failed jobs or stale running jobs
+  const isStale = job.status === JobStatus.RUNNING && job.startedAt &&
+    (Date.now() - new Date(job.startedAt).getTime()) > 60 * 60 * 1000; // 1 hour
+
+  if (job.status === JobStatus.PENDING) {
+    return { success: false, error: 'Cannot cancel pending jobs' };
+  }
+
+  if (job.status === JobStatus.COMPLETED) {
+    return { success: false, error: 'Cannot cancel completed jobs' };
+  }
+
+  if (job.status === JobStatus.RUNNING && !isStale) {
+    return { success: false, error: 'Cannot cancel active jobs (only stale jobs older than 1 hour)' };
+  }
+
+  // Get all QSO changes for this job
+  const changes = await db
+    .select()
+    .from(qsoChanges)
+    .where(eq(qsoChanges.jobId, jobId));
+
+  let deletedAdded = 0;
+  let restoredUpdated = 0;
+
+  for (const change of changes) {
+    if (change.changeType === 'added' && change.qsoId) {
+      // Delete the QSO that was added
+      await db.delete(qsos).where(eq(qsos.id, change.qsoId));
+      deletedAdded++;
+    } else if (change.changeType === 'updated' && change.qsoId && change.beforeData) {
+      // Restore the QSO to its previous state
+      try {
+        const beforeData = JSON.parse(change.beforeData);
+
+        // Build update object based on job type
+        const updateData = {};
+
+        if (job.type === 'lotw_sync') {
+          if (beforeData.lotwQslRstatus !== undefined) updateData.lotwQslRstatus = beforeData.lotwQslRstatus;
+          if (beforeData.lotwQslRdate !== undefined) updateData.lotwQslRdate = beforeData.lotwQslRdate;
+        } else if (job.type === 'dcl_sync') {
+          if (beforeData.dclQslRstatus !== undefined) updateData.dclQslRstatus = beforeData.dclQslRstatus;
+          if (beforeData.dclQslRdate !== undefined) updateData.dclQslRdate = beforeData.dclQslRdate;
+          if (beforeData.darcDok !== undefined) updateData.darcDok = beforeData.darcDok;
+          if (beforeData.myDarcDok !== undefined) updateData.myDarcDok = beforeData.myDarcDok;
+          if (beforeData.grid !== undefined) updateData.grid = beforeData.grid;
+          if (beforeData.gridSource !== undefined) updateData.gridSource = beforeData.gridSource;
+          if (beforeData.entity !== undefined) updateData.entity = beforeData.entity;
+          if (beforeData.entityId !== undefined) updateData.entityId = beforeData.entityId;
+        }
+
+        if (Object.keys(updateData).length > 0) {
+          await db.update(qsos).set(updateData).where(eq(qsos.id, change.qsoId));
+          restoredUpdated++;
+        }
+      } catch (error) {
+        logger.error('Failed to restore QSO', { qsoId: change.qsoId, error: error.message });
+      }
+    }
+  }
+
+  // Delete all change records for this job
+  await db.delete(qsoChanges).where(eq(qsoChanges.jobId, jobId));
+
+  // Update job status to cancelled
+  await updateJob(jobId, {
+    status: 'cancelled',
+    completedAt: new Date(),
+    result: JSON.stringify({
+      cancelled: true,
+      deletedAdded,
+      restoredUpdated,
+    }),
+  });
+
+  logger.info('Job cancelled successfully', { jobId, deletedAdded, restoredUpdated });
+
+  return {
+    success: true,
+    message: `Job cancelled: ${deletedAdded} QSOs deleted, ${restoredUpdated} QSOs restored`,
+    deletedAdded,
+    restoredUpdated,
+  };
+}

src/backend/services/lotw.service.js

@@ -1,7 +1,10 @@
 import { db, logger } from '../config.js';
-import { qsos } from '../db/schema/index.js';
+import { qsos, qsoChanges } from '../db/schema/index.js';
-import { max, sql, eq, and, desc } from 'drizzle-orm';
+import { max, sql, eq, and, or, desc, like } from 'drizzle-orm';
 import { updateJobProgress } from './job-queue.service.js';
+import { parseADIF, normalizeBand, normalizeMode } from '../utils/adif-parser.js';
+import { invalidateUserCache, getCachedStats, setCachedStats, invalidateStatsCache } from './cache.service.js';
+import { trackQueryPerformance, getPerformanceSummary, resetPerformanceMetrics } from './performance.service.js';
 
 /**
  * LoTW (Logbook of the World) Service
@@ -13,6 +16,35 @@ const MAX_RETRIES = 30;
 const RETRY_DELAY = 10000;
 const REQUEST_TIMEOUT = 60000;
 
+/**
+ * SECURITY: Sanitize search input to prevent injection and DoS
+ * Limits length and removes potentially harmful characters
+ */
+function sanitizeSearchInput(searchTerm) {
+  if (!searchTerm || typeof searchTerm !== 'string') {
+    return '';
+  }
+
+  // Trim whitespace
+  let sanitized = searchTerm.trim();
+
+  // Limit length (DoS prevention)
+  const MAX_SEARCH_LENGTH = 100;
+  if (sanitized.length > MAX_SEARCH_LENGTH) {
+    sanitized = sanitized.substring(0, MAX_SEARCH_LENGTH);
+  }
+
+  // Remove potentially dangerous SQL pattern wildcards from user input
+  // We'll add our own wildcards for the LIKE query
+  // Note: Drizzle ORM escapes parameters, but this adds defense-in-depth
+  sanitized = sanitized.replace(/[%_\\]/g, '');
+
+  // Remove null bytes and other control characters
+  sanitized = sanitized.replace(/[\x00-\x1F\x7F]/g, '');
+
+  return sanitized;
+}
+
 /**
  * Check if LoTW response indicates the report is still being prepared
  */
@@ -150,39 +182,6 @@ async function fetchQSOsFromLoTW(lotwUsername, lotwPassword, sinceDate = null) {
   };
 }
 
-/**
- * Parse ADIF (Amateur Data Interchange Format) data
- */
-function parseADIF(adifData) {
-  const qsos = [];
-  const records = adifData.split('<eor>');
-
-  for (const record of records) {
-    if (!record.trim()) continue;
-    if (record.trim().startsWith('<') && !record.includes('<CALL:') && !record.includes('<call:')) continue;
-
-    const qso = {};
-    const regex = /<([A-Z_]+):(\d+)(?::[A-Z]+)?>([\s\S])/gi;
-    let match;
-
-    while ((match = regex.exec(record)) !== null) {
-      const [fullMatch, fieldName, lengthStr, firstChar] = match;
-      const length = parseInt(lengthStr, 10);
-      const valueStart = match.index + fullMatch.length - 1;
-      const value = record.substring(valueStart, valueStart + length);
-
-      qso[fieldName.toLowerCase()] = value.trim();
-      regex.lastIndex = valueStart + length;
-    }
-
-    if (Object.keys(qso).length > 0 && (qso.call || qso.call)) {
-      qsos.push(qso);
-    }
-  }
-
-  return qsos;
-}
-
 /**
  * Convert ADIF QSO to database format
  */
@@ -211,37 +210,23 @@ function convertQSODatabaseFormat(adifQSO, userId) {
   };
 }
 
-function normalizeBand(band) {
+/**
-  if (!band) return null;
+ * Yield to event loop to allow other requests to be processed
-
+ * This prevents blocking the server during long-running sync operations
-  const bandMap = {
+ */
-    '160m': '160m', '80m': '80m', '60m': '60m', '40m': '40m',
+function yieldToEventLoop() {
-    '30m': '30m', '20m': '20m', '17m': '17m', '15m': '15m',
+  return new Promise(resolve => setImmediate(resolve));
-    '12m': '12m', '10m': '10m', '6m': '6m', '4m': '4m',
-    '2m': '2m', '1.25m': '1.25m', '70cm': '70cm', '33cm': '33cm',
-    '23cm': '23cm', '13cm': '13cm', '9cm': '9cm', '6cm': '6cm',
-    '3cm': '3cm', '1.2cm': '1.2cm', 'mm': 'mm',
-  };
-
-  return bandMap[band.toLowerCase()] || band;
-}
-
-function normalizeMode(mode) {
-  if (!mode) return '';
-
-  const modeMap = {
-    'cw': 'CW', 'ssb': 'SSB', 'am': 'AM', 'fm': 'FM',
-    'rtty': 'RTTY', 'psk31': 'PSK31', 'psk63': 'PSK63',
-    'ft8': 'FT8', 'ft4': 'FT4', 'jt65': 'JT65', 'jt9': 'JT9',
-    'js8': 'JS8', 'mfsk': 'MFSK', 'olivia': 'OLIVIA',
-  };
-
-  const normalized = modeMap[mode.toLowerCase()];
-  return normalized || mode.toUpperCase();
 }
 
 /**
- * Sync QSOs from LoTW to database
+ * Get QSO key for duplicate detection
+ */
+function getQSOKey(qso) {
+  return `${qso.callsign}|${qso.qsoDate}|${qso.timeOn}|${qso.band}|${qso.mode}`;
+}
+
+/**
+ * Sync QSOs from LoTW to database (optimized with batch operations)
  * @param {number} userId - User ID
  * @param {string} lotwUsername - LoTW username
  * @param {string} lotwPassword - LoTW password
@@ -283,63 +268,187 @@ export async function syncQSOs(userId, lotwUsername, lotwPassword, sinceDate = n
 
   let addedCount = 0;
   let updatedCount = 0;
+  let skippedCount = 0;
   const errors = [];
+  const addedQSOs = [];
+  const updatedQSOs = [];
 
-  for (let i = 0; i < adifQSOs.length; i++) {
+  // Convert all QSOs to database format
-    const qsoData = adifQSOs[i];
+  const dbQSOs = adifQSOs.map(qsoData => convertQSODatabaseFormat(qsoData, userId));
 
-    try {
+  // Batch size for processing
-      const dbQSO = convertQSODatabaseFormat(qsoData, userId);
+  const BATCH_SIZE = 100;
+  const totalBatches = Math.ceil(dbQSOs.length / BATCH_SIZE);
 
-      const existing = await db
+  for (let batchNum = 0; batchNum < totalBatches; batchNum++) {
+    const startIdx = batchNum * BATCH_SIZE;
+    const endIdx = Math.min(startIdx + BATCH_SIZE, dbQSOs.length);
+    const batch = dbQSOs.slice(startIdx, endIdx);
+
+    // Build condition for batch duplicate check
+    // Get unique callsigns, dates, bands, modes from batch
+    const batchCallsigns = [...new Set(batch.map(q => q.callsign))];
+    const batchDates = [...new Set(batch.map(q => q.qsoDate))];
+
+    // Fetch all existing QSOs that could match this batch in one query
+    const existingQSOs = await db
       .select()
       .from(qsos)
       .where(
         and(
           eq(qsos.userId, userId),
-            eq(qsos.callsign, dbQSO.callsign),
+          // Match callsigns OR dates from this batch
-            eq(qsos.qsoDate, dbQSO.qsoDate),
+          sql`(${qsos.callsign} IN ${batchCallsigns} OR ${qsos.qsoDate} IN ${batchDates})`
-            eq(qsos.band, dbQSO.band),
-            eq(qsos.mode, dbQSO.mode)
         )
-        )
+      );
-        .limit(1);
 
-      if (existing.length > 0) {
+    // Build lookup map for existing QSOs
-        await db
+    const existingMap = new Map();
-          .update(qsos)
+    for (const existing of existingQSOs) {
-          .set({
+      const key = getQSOKey(existing);
+      existingMap.set(key, existing);
+    }
+
+    // Process batch
+    const toInsert = [];
+    const toUpdate = [];
+    const changeRecords = [];
+
+    for (const dbQSO of batch) {
+      try {
+        const key = getQSOKey(dbQSO);
+        const existingQSO = existingMap.get(key);
+
+        if (existingQSO) {
+          // Check if LoTW confirmation data has changed
+          const confirmationChanged =
+            existingQSO.lotwQslRstatus !== dbQSO.lotwQslRstatus ||
+            existingQSO.lotwQslRdate !== dbQSO.lotwQslRdate;
+
+          if (confirmationChanged) {
+            toUpdate.push({
+              id: existingQSO.id,
               lotwQslRdate: dbQSO.lotwQslRdate,
               lotwQslRstatus: dbQSO.lotwQslRstatus,
               lotwSyncedAt: dbQSO.lotwSyncedAt,
-          })
+            });
-          .where(eq(qsos.id, existing[0].id));
-        updatedCount++;
-      } else {
-        await db.insert(qsos).values(dbQSO);
-        addedCount++;
-      }
 
-      // Update job progress every 10 QSOs
+            // Track change for rollback
-      if (jobId && (i + 1) % 10 === 0) {
+            if (jobId) {
-        await updateJobProgress(jobId, {
+              changeRecords.push({
-          processed: i + 1,
+                jobId,
-          message: `Processed ${i + 1}/${adifQSOs.length} QSOs...`,
+                qsoId: existingQSO.id,
+                changeType: 'updated',
+                beforeData: JSON.stringify({
+                  lotwQslRstatus: existingQSO.lotwQslRstatus,
+                  lotwQslRdate: existingQSO.lotwQslRdate,
+                }),
+                afterData: JSON.stringify({
+                  lotwQslRstatus: dbQSO.lotwQslRstatus,
+                  lotwQslRdate: dbQSO.lotwQslRdate,
+                }),
               });
             }
+
+            updatedQSOs.push({
+              id: existingQSO.id,
+              callsign: dbQSO.callsign,
+              date: dbQSO.qsoDate,
+              band: dbQSO.band,
+              mode: dbQSO.mode,
+            });
+            updatedCount++;
+          } else {
+            skippedCount++;
+          }
+        } else {
+          // New QSO to insert
+          toInsert.push(dbQSO);
+          addedQSOs.push({
+            callsign: dbQSO.callsign,
+            date: dbQSO.qsoDate,
+            band: dbQSO.band,
+            mode: dbQSO.mode,
+          });
+          addedCount++;
+        }
       } catch (error) {
-      logger.error('Error processing QSO', { error: error.message, jobId, qso: qsoData });
+        logger.error('Error processing QSO in batch', { error: error.message, jobId, qso: dbQSO });
-      errors.push({ qso: qsoData, error: error.message });
+        errors.push({ qso: dbQSO, error: error.message });
       }
     }
 
-  logger.info('LoTW sync completed', { total: adifQSOs.length, added: addedCount, updated: updatedCount, jobId });
+    // Batch insert new QSOs
+    if (toInsert.length > 0) {
+      const inserted = await db.insert(qsos).values(toInsert).returning();
+      // Track inserted QSOs with their IDs for change tracking
+      if (jobId) {
+        for (let i = 0; i < inserted.length; i++) {
+          changeRecords.push({
+            jobId,
+            qsoId: inserted[i].id,
+            changeType: 'added',
+            beforeData: null,
+            afterData: JSON.stringify({
+              callsign: toInsert[i].callsign,
+              qsoDate: toInsert[i].qsoDate,
+              timeOn: toInsert[i].timeOn,
+              band: toInsert[i].band,
+              mode: toInsert[i].mode,
+            }),
+          });
+          // Update addedQSOs with actual IDs
+          addedQSOs[addedCount - inserted.length + i].id = inserted[i].id;
+        }
+      }
+    }
+
+    // Batch update existing QSOs
+    if (toUpdate.length > 0) {
+      for (const update of toUpdate) {
+        await db
+          .update(qsos)
+          .set({
+            lotwQslRdate: update.lotwQslRdate,
+            lotwQslRstatus: update.lotwQslRstatus,
+            lotwSyncedAt: update.lotwSyncedAt,
+          })
+          .where(eq(qsos.id, update.id));
+      }
+    }
+
+    // Batch insert change records
+    if (changeRecords.length > 0) {
+      await db.insert(qsoChanges).values(changeRecords);
+    }
+
+    // Update job progress after each batch
+    if (jobId) {
+      await updateJobProgress(jobId, {
+        processed: endIdx,
+        message: `Processed ${endIdx}/${dbQSOs.length} QSOs...`,
+      });
+    }
+
+    // Yield to event loop after each batch to allow other requests
+    await yieldToEventLoop();
+  }
+
+  logger.info('LoTW sync completed', { total: dbQSOs.length, added: addedCount, updated: updatedCount, skipped: skippedCount, jobId });
+
+  // Invalidate award and stats cache for this user since QSOs may have changed
+  const deletedCache = invalidateUserCache(userId);
+  invalidateStatsCache(userId);
+  logger.debug(`Invalidated ${deletedCache} cached award entries and stats cache for user ${userId}`);
 
   return {
     success: true,
-    total: adifQSOs.length,
+    total: dbQSOs.length,
     added: addedCount,
     updated: updatedCount,
+    skipped: skippedCount,
+    addedQSOs,
+    updatedQSOs,
     errors: errors.length > 0 ? errors : undefined,
   };
 }
@@ -350,14 +459,69 @@ export async function syncQSOs(userId, lotwUsername, lotwPassword, sinceDate = n
 export async function getUserQSOs(userId, filters = {}, options = {}) {
   const { page = 1, limit = 100 } = options;
 
+  logger.debug('getUserQSOs called', { userId, filters, options });
+
   const conditions = [eq(qsos.userId, userId)];
 
   if (filters.band) conditions.push(eq(qsos.band, filters.band));
   if (filters.mode) conditions.push(eq(qsos.mode, filters.mode));
   if (filters.confirmed) conditions.push(eq(qsos.lotwQslRstatus, 'Y'));
 
-  const allResults = await db.select().from(qsos).where(and(...conditions));
+  // Confirmation type filter: lotw, dcl, both, none
-  const totalCount = allResults.length;
+  if (filters.confirmationType) {
+    logger.debug('Applying confirmation type filter', { confirmationType: filters.confirmationType });
+    if (filters.confirmationType === 'lotw') {
+      // LoTW only: Confirmed by LoTW but NOT by DCL
+      conditions.push(eq(qsos.lotwQslRstatus, 'Y'));
+      conditions.push(
+        sql`(${qsos.dclQslRstatus} IS NULL OR ${qsos.dclQslRstatus} != 'Y')`
+      );
+    } else if (filters.confirmationType === 'dcl') {
+      // DCL only: Confirmed by DCL but NOT by LoTW
+      conditions.push(eq(qsos.dclQslRstatus, 'Y'));
+      conditions.push(
+        sql`(${qsos.lotwQslRstatus} IS NULL OR ${qsos.lotwQslRstatus} != 'Y')`
+      );
+    } else if (filters.confirmationType === 'both') {
+      // Both confirmed: Confirmed by LoTW AND DCL
+      conditions.push(eq(qsos.lotwQslRstatus, 'Y'));
+      conditions.push(eq(qsos.dclQslRstatus, 'Y'));
+    } else if (filters.confirmationType === 'any') {
+      // Confirmed by at least 1 service: LoTW OR DCL
+      conditions.push(
+        sql`(${qsos.lotwQslRstatus} = 'Y' OR ${qsos.dclQslRstatus} = 'Y')`
+      );
+    } else if (filters.confirmationType === 'none') {
+      // Not confirmed: Not confirmed by LoTW AND not confirmed by DCL
+      conditions.push(
+        sql`(${qsos.lotwQslRstatus} IS NULL OR ${qsos.lotwQslRstatus} != 'Y')`
+      );
+      conditions.push(
+        sql`(${qsos.dclQslRstatus} IS NULL OR ${qsos.dclQslRstatus} != 'Y')`
+      );
+    }
+  }
+
+  // Search filter: callsign, entity, or grid
+  if (filters.search) {
+    // SECURITY: Sanitize search input to prevent injection
+    const sanitized = sanitizeSearchInput(filters.search);
+    if (sanitized) {
+      const searchTerm = `%${sanitized}%`;
+      conditions.push(or(
+        like(qsos.callsign, searchTerm),
+        like(qsos.entity, searchTerm),
+        like(qsos.grid, searchTerm)
+      ));
+    }
+  }
+
+  // Use SQL COUNT for efficient pagination (avoids loading all QSOs into memory)
+  const [{ count }] = await db
+    .select({ count: sql`CAST(count(*) AS INTEGER)` })
+    .from(qsos)
+    .where(and(...conditions));
+  const totalCount = count;
 
   const offset = (page - 1) * limit;
 
@@ -386,26 +550,40 @@ export async function getUserQSOs(userId, filters = {}, options = {}) {
  * Get QSO statistics for a user
  */
 export async function getQSOStats(userId) {
-  const allQSOs = await db.select().from(qsos).where(eq(qsos.userId, userId));
+  // Check cache first
-  const confirmed = allQSOs.filter((q) => q.lotwQslRstatus === 'Y');
+  const cached = getCachedStats(userId);
+  if (cached) {
+    return cached;
+  }
 
-  const uniqueEntities = new Set();
+  // Calculate stats from database with performance tracking
-  const uniqueBands = new Set();
+  const stats = await trackQueryPerformance('getQSOStats', async () => {
-  const uniqueModes = new Set();
+    const [basicStats, uniqueStats] = await Promise.all([
+      db.select({
+        total: sql`CAST(COUNT(*) AS INTEGER)`,
+        confirmed: sql`CAST(SUM(CASE WHEN lotw_qsl_rstatus = 'Y' OR dcl_qsl_rstatus = 'Y' THEN 1 ELSE 0 END) AS INTEGER)`
+      }).from(qsos).where(eq(qsos.userId, userId)),
 
-  allQSOs.forEach((q) => {
+      db.select({
-    if (q.entity) uniqueEntities.add(q.entity);
+        uniqueEntities: sql`CAST(COUNT(DISTINCT entity) AS INTEGER)`,
-    if (q.band) uniqueBands.add(q.band);
+        uniqueBands: sql`CAST(COUNT(DISTINCT band) AS INTEGER)`,
-    if (q.mode) uniqueModes.add(q.mode);
+        uniqueModes: sql`CAST(COUNT(DISTINCT mode) AS INTEGER)`
-  });
+      }).from(qsos).where(eq(qsos.userId, userId))
+    ]);
 
     return {
-    total: allQSOs.length,
+      total: basicStats[0].total,
-    confirmed: confirmed.length,
+      confirmed: basicStats[0].confirmed || 0,
-    uniqueEntities: uniqueEntities.size,
+      uniqueEntities: uniqueStats[0].uniqueEntities || 0,
-    uniqueBands: uniqueBands.size,
+      uniqueBands: uniqueStats[0].uniqueBands || 0,
-    uniqueModes: uniqueModes.size,
+      uniqueModes: uniqueStats[0].uniqueModes || 0,
     };
+  });
+
+  // Cache results
+  setCachedStats(userId, stats);
+
+  return stats;
 }
 
 /**
@@ -437,3 +615,18 @@ export async function deleteQSOs(userId) {
   return result;
 }
 
+/**
+ * Get a single QSO by ID for a specific user
+ * @param {number} userId - User ID
+ * @param {number} qsoId - QSO ID
+ * @returns {Object|null} QSO object or null if not found
+ */
+export async function getQSOById(userId, qsoId) {
+  const result = await db
+    .select()
+    .from(qsos)
+    .where(and(eq(qsos.userId, userId), eq(qsos.id, qsoId)));
+
+  return result.length > 0 ? result[0] : null;
+}
+

src/backend/services/performance.service.js

@@ -0,0 +1,274 @@
+/**
+ * Performance Monitoring Service
+ *
+ * Tracks query performance metrics to identify slow queries and detect regressions.
+ *
+ * Features:
+ * - Track individual query performance
+ * - Calculate averages and percentiles
+ * - Detect slow queries automatically
+ * - Provide performance statistics for monitoring
+ *
+ * Usage:
+ *   const result = await trackQueryPerformance('getQSOStats', async () => {
+ *     return await someExpensiveOperation();
+ *   });
+ */
+
+// Performance metrics storage
+const queryMetrics = new Map();
+
+// Thresholds for slow queries
+const SLOW_QUERY_THRESHOLD = 100; // 100ms = slow
+const CRITICAL_QUERY_THRESHOLD = 500; // 500ms = critical
+
+/**
+ * Track query performance and log results
+ * @param {string} queryName - Name of the query/operation
+ * @param {Function} fn - Async function to execute and track
+ * @returns {Promise<any>} Result of the function
+ */
+export async function trackQueryPerformance(queryName, fn) {
+  const start = performance.now();
+  let result;
+  let error = null;
+
+  try {
+    result = await fn();
+  } catch (err) {
+    error = err;
+    throw err; // Re-throw error
+  } finally {
+    const duration = performance.now() - start;
+    recordQueryMetric(queryName, duration, error);
+
+    // Log slow queries
+    if (duration > CRITICAL_QUERY_THRESHOLD) {
+      console.error(`🚨 CRITICAL SLOW QUERY: ${queryName} took ${duration.toFixed(2)}ms`);
+    } else if (duration > SLOW_QUERY_THRESHOLD) {
+      console.warn(`⚠️  SLOW QUERY: ${queryName} took ${duration.toFixed(2)}ms`);
+    } else {
+      console.log(`✅ Query Performance: ${queryName} - ${duration.toFixed(2)}ms`);
+    }
+  }
+
+  return result;
+}
+
+/**
+ * Record a query metric for later analysis
+ * @param {string} queryName - Name of the query
+ * @param {number} duration - Query duration in milliseconds
+ * @param {Error|null} error - Error if query failed
+ */
+function recordQueryMetric(queryName, duration, error = null) {
+  if (!queryMetrics.has(queryName)) {
+    queryMetrics.set(queryName, {
+      count: 0,
+      totalTime: 0,
+      minTime: Infinity,
+      maxTime: 0,
+      errors: 0,
+      durations: [] // Keep recent durations for percentile calculation
+    });
+  }
+
+  const metrics = queryMetrics.get(queryName);
+  metrics.count++;
+  metrics.totalTime += duration;
+  metrics.minTime = Math.min(metrics.minTime, duration);
+  metrics.maxTime = Math.max(metrics.maxTime, duration);
+  if (error) metrics.errors++;
+
+  // Keep last 100 durations for percentile calculation
+  metrics.durations.push(duration);
+  if (metrics.durations.length > 100) {
+    metrics.durations.shift();
+  }
+}
+
+/**
+ * Get performance statistics for a specific query or all queries
+ * @param {string|null} queryName - Query name or null for all queries
+ * @returns {object} Performance statistics
+ */
+export function getPerformanceStats(queryName = null) {
+  if (queryName) {
+    const metrics = queryMetrics.get(queryName);
+    if (!metrics) {
+      return null;
+    }
+    return calculateQueryStats(queryName, metrics);
+  }
+
+  // Get stats for all queries
+  const stats = {};
+  for (const [name, metrics] of queryMetrics.entries()) {
+    stats[name] = calculateQueryStats(name, metrics);
+  }
+  return stats;
+}
+
+/**
+ * Calculate statistics for a query
+ * @param {string} queryName - Name of the query
+ * @param {object} metrics - Raw metrics
+ * @returns {object} Calculated statistics
+ */
+function calculateQueryStats(queryName, metrics) {
+  const avgTime = metrics.totalTime / metrics.count;
+
+  // Calculate percentiles (P50, P95, P99)
+  const sorted = [...metrics.durations].sort((a, b) => a - b);
+  const p50 = sorted[Math.floor(sorted.length * 0.5)] || 0;
+  const p95 = sorted[Math.floor(sorted.length * 0.95)] || 0;
+  const p99 = sorted[Math.floor(sorted.length * 0.99)] || 0;
+
+  // Determine performance rating
+  let rating = 'EXCELLENT';
+  if (avgTime > CRITICAL_QUERY_THRESHOLD) {
+    rating = 'CRITICAL';
+  } else if (avgTime > SLOW_QUERY_THRESHOLD) {
+    rating = 'SLOW';
+  } else if (avgTime > 50) {
+    rating = 'GOOD';
+  }
+
+  return {
+    name: queryName,
+    count: metrics.count,
+    avgTime: avgTime.toFixed(2) + 'ms',
+    minTime: metrics.minTime.toFixed(2) + 'ms',
+    maxTime: metrics.maxTime.toFixed(2) + 'ms',
+    p50: p50.toFixed(2) + 'ms',
+    p95: p95.toFixed(2) + 'ms',
+    p99: p99.toFixed(2) + 'ms',
+    errors: metrics.errors,
+    errorRate: ((metrics.errors / metrics.count) * 100).toFixed(2) + '%',
+    rating
+  };
+}
+
+/**
+ * Get overall performance summary
+ * @returns {object} Summary of all query performance
+ */
+export function getPerformanceSummary() {
+  if (queryMetrics.size === 0) {
+    return {
+      totalQueries: 0,
+      totalTime: 0,
+      avgTime: '0ms',
+      slowQueries: 0,
+      criticalQueries: 0,
+      topSlowest: []
+    };
+  }
+
+  let totalQueries = 0;
+  let totalTime = 0;
+  let slowQueries = 0;
+  let criticalQueries = 0;
+  const allStats = [];
+
+  for (const [name, metrics] of queryMetrics.entries()) {
+    const stats = calculateQueryStats(name, metrics);
+    totalQueries += metrics.count;
+    totalTime += metrics.totalTime;
+
+    const avgTime = metrics.totalTime / metrics.count;
+    if (avgTime > CRITICAL_QUERY_THRESHOLD) {
+      criticalQueries++;
+    } else if (avgTime > SLOW_QUERY_THRESHOLD) {
+      slowQueries++;
+    }
+
+    allStats.push(stats);
+  }
+
+  // Sort by average time (slowest first)
+  const topSlowest = allStats
+    .sort((a, b) => parseFloat(b.avgTime) - parseFloat(a.avgTime))
+    .slice(0, 10);
+
+  return {
+    totalQueries,
+    totalTime: totalTime.toFixed(2) + 'ms',
+    avgTime: (totalTime / totalQueries).toFixed(2) + 'ms',
+    slowQueries,
+    criticalQueries,
+    topSlowest
+  };
+}
+
+/**
+ * Reset performance metrics (for testing)
+ */
+export function resetPerformanceMetrics() {
+  queryMetrics.clear();
+  console.log('Performance metrics cleared');
+}
+
+/**
+ * Get slow queries (above threshold)
+ * @param {number} threshold - Duration threshold in ms (default: 100ms)
+ * @returns {Array} Array of slow query statistics
+ */
+export function getSlowQueries(threshold = SLOW_QUERY_THRESHOLD) {
+  const slowQueries = [];
+
+  for (const [name, metrics] of queryMetrics.entries()) {
+    const avgTime = metrics.totalTime / metrics.count;
+    if (avgTime > threshold) {
+      slowQueries.push(calculateQueryStats(name, metrics));
+    }
+  }
+
+  // Sort by average time (slowest first)
+  return slowQueries.sort((a, b) => parseFloat(b.avgTime) - parseFloat(a.avgTime));
+}
+
+/**
+ * Performance monitoring utility for database queries
+ * @param {string} queryName - Name of the query
+ * @param {Function} queryFn - Query function to track
+ * @returns {Promise<any>} Query result
+ */
+export async function trackQuery(queryName, queryFn) {
+  return trackQueryPerformance(queryName, queryFn);
+}
+
+/**
+ * Check if performance is degrading (compares recent vs overall average)
+ * @param {string} queryName - Query name to check
+ * @param {number} windowSize - Number of recent queries to compare (default: 10)
+ * @returns {object} Degradation status
+ */
+export function checkPerformanceDegradation(queryName, windowSize = 10) {
+  const metrics = queryMetrics.get(queryName);
+  if (!metrics || metrics.durations.length < windowSize * 2) {
+    return {
+      degraded: false,
+      message: 'Insufficient data'
+    };
+  }
+
+  // Recent queries (last N)
+  const recentDurations = metrics.durations.slice(-windowSize);
+  const avgRecent = recentDurations.reduce((a, b) => a + b, 0) / recentDurations.length;
+
+  // Overall average
+  const avgOverall = metrics.totalTime / metrics.count;
+
+  // Check if recent is 2x worse than overall
+  const degraded = avgRecent > avgOverall * 2;
+  const change = ((avgRecent - avgOverall) / avgOverall * 100).toFixed(2) + '%';
+
+  return {
+    degraded,
+    avgRecent: avgRecent.toFixed(2) + 'ms',
+    avgOverall: avgOverall.toFixed(2) + 'ms',
+    change,
+    message: degraded ? `Performance degraded by ${change}` : 'Performance stable'
+  };
+}

src/backend/utils/adif-parser.js

@@ -0,0 +1,145 @@
+/**
+ * ADIF (Amateur Data Interchange Format) Parser
+ * Handles standard ADIF format from LoTW, DCL, and other sources
+ *
+ * ADIF format: <FIELD_NAME:length>value
+ * Example: <CALL:5>DK0MU<BAND:3>80m<QSO_DATE:8>20250621
+ */
+
+/**
+ * Parse ADIF data into array of QSO records
+ * @param {string} adifData - Raw ADIF data string
+ * @returns {Array<Object>} Array of parsed QSO records
+ */
+export function parseADIF(adifData) {
+  const qsos = [];
+
+  // Split by <EOR> (case-insensitive to handle <EOR>, <eor>, <Eor>, etc.)
+  const regex = new RegExp('<eor>', 'gi');
+  const records = adifData.split(regex);
+
+  for (const record of records) {
+    if (!record.trim()) continue;
+
+    // Skip header records
+    const trimmed = record.trim();
+    if (trimmed.startsWith('<') && !trimmed.includes('<CALL:') && !trimmed.includes('<call:')) {
+      continue;
+    }
+
+    const qso = {};
+
+    // Use matchAll for cleaner parsing (creates new iterator for each record)
+    const matches = record.matchAll(/<([A-Z0-9_]+):(\d+)(?::[A-Z]+)?>/gi);
+
+    for (const match of matches) {
+      const [fullMatch, fieldName, lengthStr] = match;
+      const length = parseInt(lengthStr, 10);
+      const valueStart = match.index + fullMatch.length;
+
+      // Extract exactly 'length' characters from the string
+      const value = record.substring(valueStart, valueStart + length);
+
+      qso[fieldName.toLowerCase()] = value.trim();
+    }
+
+    // Only add if we have at least a callsign
+    if (Object.keys(qso).length > 0 && (qso.call || qso.callsign)) {
+      qsos.push(qso);
+    }
+  }
+
+  return qsos;
+}
+
+/**
+ * Parse DCL API response
+ * DCL returns JSON with an "adif" field containing ADIF data
+ * @param {Object} response - DCL API response
+ * @returns {Array<Object>} Array of parsed QSO records
+ */
+export function parseDCLResponse(response) {
+  if (!response || !response.adif) {
+    return [];
+  }
+
+  const adifData = response.adif;
+  const qsos = parseADIF(adifData);
+
+  // Map DCL-specific fields to standard names
+  return qsos.map(qso => ({
+    ...qso,
+    dcl_qsl_rcvd: qso.dcl_qsl_rcvd,
+    dcl_qslrdate: qso.dcl_qslrdate,
+    darc_dok: qso.darc_dok,
+    my_darc_dok: qso.my_darc_dok,
+  }));
+}
+
+/**
+ * Normalize band name to standard format
+ * @param {string} band - Band name
+ * @returns {string|null} Normalized band name
+ */
+export function normalizeBand(band) {
+  if (!band) return null;
+
+  const bandMap = {
+    '160m': '160m', '1800': '160m',
+    '80m': '80m', '3500': '80m', '3.5mhz': '80m',
+    '60m': '60m', '5mhz': '60m',
+    '40m': '40m', '7000': '40m', '7mhz': '40m',
+    '30m': '30m', '10100': '30m', '10mhz': '30m',
+    '20m': '20m', '14000': '20m', '14mhz': '20m',
+    '17m': '17m', '18100': '17m', '18mhz': '17m',
+    '15m': '15m', '21000': '15m', '21mhz': '15m',
+    '12m': '12m', '24890': '12m', '24mhz': '12m',
+    '10m': '10m', '28000': '10m', '28mhz': '10m',
+    '6m': '6m', '50000': '6m', '50mhz': '6m',
+    '4m': '4m', '70000': '4m', '70mhz': '4m',
+    '2m': '2m', '144000': '2m', '144mhz': '2m',
+    '1.25m': '1.25m', '222000': '1.25m', '222mhz': '1.25m',
+    '70cm': '70cm', '432000': '70cm', '432mhz': '70cm',
+    '33cm': '33cm', '902000': '33cm', '902mhz': '33cm',
+    '23cm': '23cm', '1296000': '23cm', '1296mhz': '23cm',
+  };
+
+  const normalized = bandMap[band.toLowerCase()];
+  return normalized || band;
+}
+
+/**
+ * Normalize mode name to standard format
+ * @param {string} mode - Mode name
+ * @returns {string} Normalized mode name
+ */
+export function normalizeMode(mode) {
+  if (!mode) return '';
+
+  const modeMap = {
+    'cw': 'CW',
+    'ssb': 'SSB', 'lsb': 'SSB', 'usb': 'SSB',
+    'am': 'AM',
+    'fm': 'FM',
+    'rtty': 'RTTY',
+    'psk31': 'PSK31',
+    'psk63': 'PSK63',
+    'ft8': 'FT8',
+    'ft4': 'FT4',
+    'jt65': 'JT65',
+    'jt9': 'JT9',
+    'js8': 'JS8',
+    'mfsk': 'MFSK',
+    'olivia': 'OLIVIA',
+    'sstv': 'SSTV',
+    'packet': 'PACKET',
+    'pactor': 'PACTOR',
+    'winlink': 'WINLINK',
+    'fax': 'FAX',
+    'hell': 'HELL',
+    'tor': 'TOR',
+  };
+
+  const normalized = modeMap[mode.toLowerCase()];
+  return normalized || mode.toUpperCase();
+}

src/frontend/src/lib/api.js

@@ -74,6 +74,8 @@ export const qsosAPI = {
 
   syncFromLoTW: () => apiRequest('/lotw/sync', { method: 'POST' }),
 
+  syncFromDCL: () => apiRequest('/dcl/sync', { method: 'POST' }),
+
   deleteAll: () => apiRequest('/qsos/all', { method: 'DELETE' }),
 };
 
@@ -82,4 +84,37 @@ export const jobsAPI = {
   getStatus: (jobId) => apiRequest(`/jobs/${jobId}`),
   getActive: () => apiRequest('/jobs/active'),
   getRecent: (limit = 10) => apiRequest(`/jobs?limit=${limit}`),
+  cancel: (jobId) => apiRequest(`/jobs/${jobId}`, { method: 'DELETE' }),
+};
+
+// Admin API
+export const adminAPI = {
+  getStats: () => apiRequest('/admin/stats'),
+
+  getUsers: () => apiRequest('/admin/users'),
+
+  getUserDetails: (userId) => apiRequest(`/admin/users/${userId}`),
+
+  updateUserRole: (userId, isAdmin) => apiRequest(`/admin/users/${userId}/role`, {
+    method: 'POST',
+    body: JSON.stringify({ isAdmin }),
+  }),
+
+  deleteUser: (userId) => apiRequest(`/admin/users/${userId}`, {
+    method: 'DELETE',
+  }),
+
+  impersonate: (userId) => apiRequest(`/admin/impersonate/${userId}`, {
+    method: 'POST',
+  }),
+
+  stopImpersonation: () => apiRequest('/admin/impersonate/stop', {
+    method: 'POST',
+  }),
+
+  getImpersonationStatus: () => apiRequest('/admin/impersonation/status'),
+
+  getActions: (limit = 50, offset = 0) => apiRequest(`/admin/actions?limit=${limit}&offset=${offset}`),
+
+  getMyActions: (limit = 50, offset = 0) => apiRequest(`/admin/actions/my?limit=${limit}&offset=${offset}`),
 };

src/frontend/src/lib/logger.js

@@ -0,0 +1,192 @@
+/**
+ * Frontend Logger
+ *
+ * Sends logs to backend endpoint which writes to logs/frontend.log
+ * Respects LOG_LEVEL environment variable from backend
+ *
+ * Usage:
+ *   import { logger } from '$lib/logger';
+ *   logger.info('User logged in', { userId: 123 });
+ *   logger.error('Failed to fetch data', { error: err.message });
+ */
+
+// Log levels matching backend
+const LOG_LEVELS = { debug: 0, info: 1, warn: 2, error: 3 };
+
+// Get log level from backend or default to info
+let currentLogLevel = LOG_LEVELS.info;
+
+// Buffer for batching logs (sends when buffer reaches this size or after timeout)
+const logBuffer = [];
+const BUFFER_SIZE = 10;
+const BUFFER_TIMEOUT = 5000; // 5 seconds
+let bufferTimeout = null;
+
+// Fetch current log level from backend on initialization
+async function fetchLogLevel() {
+  try {
+    // Try to get log level from health endpoint or localStorage
+    const response = await fetch('/api/health');
+    if (response.ok) {
+      // For now, we'll assume the backend doesn't expose log level in health
+      // Could add it later. Default to info in production, debug in development
+      const isDev = import.meta.env.DEV;
+      currentLogLevel = isDev ? LOG_LEVELS.debug : LOG_LEVELS.info;
+    }
+  } catch (err) {
+    // Default to info if can't fetch
+    currentLogLevel = LOG_LEVELS.info;
+  }
+}
+
+// Initialize log level
+fetchLogLevel();
+
+/**
+ * Send logs to backend
+ */
+async function sendLogs(entries) {
+  try {
+    await fetch('/api/logs', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      credentials: 'include', // Include cookies for authentication
+      body: JSON.stringify(entries),
+    });
+  } catch (err) {
+    // Silent fail - don't break the app if logging fails
+    console.error('Failed to send logs to backend:', err);
+  }
+}
+
+/**
+ * Flush log buffer
+ */
+function flushBuffer() {
+  if (logBuffer.length === 0) return;
+
+  const entries = [...logBuffer];
+  logBuffer.length = 0; // Clear buffer
+
+  if (bufferTimeout) {
+    clearTimeout(bufferTimeout);
+    bufferTimeout = null;
+  }
+
+  sendLogs(entries);
+}
+
+/**
+ * Add log entry to buffer
+ */
+function addToBuffer(level, message, data) {
+  // Check if we should log this level
+  if (LOG_LEVELS[level] < currentLogLevel) return;
+
+  logBuffer.push({
+    level,
+    message,
+    data: data || undefined,
+    timestamp: new Date().toISOString(),
+  });
+
+  // Flush if buffer is full
+  if (logBuffer.length >= BUFFER_SIZE) {
+    flushBuffer();
+  } else {
+    // Set timeout to flush after BUFFER_TIMEOUT
+    if (bufferTimeout) {
+      clearTimeout(bufferTimeout);
+    }
+    bufferTimeout = setTimeout(flushBuffer, BUFFER_TIMEOUT);
+  }
+}
+
+/**
+ * Logger API
+ */
+export const logger = {
+  /**
+   * Log debug message
+   */
+  debug: (message, data) => {
+    if (import.meta.env.DEV) {
+      console.debug('[DEBUG]', message, data || '');
+    }
+    addToBuffer('debug', message, data);
+  },
+
+  /**
+   * Log info message
+   */
+  info: (message, data) => {
+    if (import.meta.env.DEV) {
+      console.info('[INFO]', message, data || '');
+    }
+    addToBuffer('info', message, data);
+  },
+
+  /**
+   * Log warning message
+   */
+  warn: (message, data) => {
+    if (import.meta.env.DEV) {
+      console.warn('[WARN]', message, data || '');
+    }
+    addToBuffer('warn', message, data);
+  },
+
+  /**
+   * Log error message
+   */
+  error: (message, data) => {
+    if (import.meta.env.DEV) {
+      console.error('[ERROR]', message, data || '');
+    }
+    addToBuffer('error', message, data);
+  },
+
+  /**
+   * Immediately flush the log buffer
+   */
+  flush: flushBuffer,
+
+  /**
+   * Set the log level (for testing purposes)
+   */
+  setLogLevel: (level) => {
+    if (LOG_LEVELS[level] !== undefined) {
+      currentLogLevel = LOG_LEVELS[level];
+    }
+  },
+};
+
+/**
+ * SvelteKit action for automatic error logging
+ * Can be used in +page.svelte or +layout.svelte
+ */
+export function setupErrorLogging() {
+  // Log unhandled errors
+  if (typeof window !== 'undefined') {
+    window.addEventListener('error', (event) => {
+      logger.error('Unhandled error', {
+        message: event.message,
+        filename: event.filename,
+        lineno: event.lineno,
+        colno: event.colno,
+        error: event.error?.stack,
+      });
+    });
+
+    window.addEventListener('unhandledrejection', (event) => {
+      logger.error('Unhandled promise rejection', {
+        reason: event.reason,
+        promise: event.promise?.toString(),
+      });
+    });
+  }
+}
+
+export default logger;

src/frontend/src/routes/+layout.svelte

@@ -27,6 +27,9 @@
             <a href="/awards" class="nav-link">Awards</a>
             <a href="/qsos" class="nav-link">QSOs</a>
             <a href="/settings" class="nav-link">Settings</a>
+            {#if $auth.user?.isAdmin}
+              <a href="/admin" class="nav-link admin-link">Admin</a>
+            {/if}
             <button on:click={handleLogout} class="nav-link logout-btn">Logout</button>
           </div>
         </div>
@@ -119,6 +122,16 @@
     background-color: rgba(255, 107, 107, 0.1);
   }
 
+  .admin-link {
+    background-color: #ffc107;
+    color: #000;
+    font-weight: 600;
+  }
+
+  .admin-link:hover {
+    background-color: #e0a800;
+  }
+
   main {
     flex: 1;
     padding: 2rem 1rem;

src/frontend/src/routes/+page.svelte

@@ -1,14 +1,161 @@
 <script>
-  import { onMount } from 'svelte';
+  import { onMount, onDestroy, tick } from 'svelte';
   import { auth } from '$lib/stores.js';
+  import { jobsAPI } from '$lib/api.js';
   import { browser } from '$app/environment';
 
-  onMount(() => {
+  let jobs = [];
+  let loading = true;
+  let cancellingJobs = new Map(); // Track cancelling state per job
+  let pollingInterval = null;
+
+  async function loadJobs() {
+    try {
+      const response = await jobsAPI.getRecent(5);
+      jobs = response.jobs || [];
+
+      // Check if we need to update polling state
+      await tick();
+      updatePollingState();
+    } catch (error) {
+      console.error('Failed to load jobs:', error);
+    }
+  }
+
+  function hasActiveJobs() {
+    return jobs.some(job => job.status === 'pending' || job.status === 'running');
+  }
+
+  function updatePollingState() {
+    if (hasActiveJobs()) {
+      startPolling();
+    } else {
+      stopPolling();
+    }
+  }
+
+  function startPolling() {
+    if (pollingInterval) return; // Already polling
+
+    pollingInterval = setInterval(async () => {
+      await loadJobs();
+    }, 2000); // Poll every 2 seconds
+  }
+
+  function stopPolling() {
+    if (pollingInterval) {
+      clearInterval(pollingInterval);
+      pollingInterval = null;
+    }
+  }
+
+  onMount(async () => {
     // Load user profile on mount if we have a token
     if (browser) {
       auth.loadProfile();
     }
+
+    // Load recent jobs if authenticated
+    if ($auth.user) {
+      await loadJobs();
+      loading = false;
+    }
   });
+
+  onDestroy(() => {
+    stopPolling();
+  });
+
+  async function cancelJob(jobId) {
+    if (!confirm('Are you sure you want to cancel this job? This will rollback all changes made by this sync.')) {
+      return;
+    }
+
+    cancellingJobs.set(jobId, true);
+
+    try {
+      const result = await jobsAPI.cancel(jobId);
+      alert(result.message || 'Job cancelled successfully');
+      // Reload jobs to show updated status
+      await loadJobs();
+    } catch (error) {
+      alert('Failed to cancel job: ' + error.message);
+    } finally {
+      cancellingJobs.delete(jobId);
+    }
+  }
+
+  function canCancelJob(job) {
+    // Only allow cancelling failed jobs or stale running jobs
+    if (job.status === 'failed') {
+      return true;
+    }
+
+    // Allow cancelling stale running jobs (>1 hour)
+    if (job.status === 'running' && job.startedAt) {
+      const started = new Date(job.startedAt);
+      const now = new Date();
+      const hoursSinceStart = (now - started) / (1000 * 60 * 60);
+      return hoursSinceStart > 1;
+    }
+
+    return false;
+  }
+
+  function isJobStale(job) {
+    return job.status === 'running' && job.startedAt &&
+      (new Date() - new Date(job.startedAt)) > (1000 * 60 * 60);
+  }
+
+  function getJobIcon(type) {
+    return type === 'lotw_sync' ? '📡' : '🛰️';
+  }
+
+  function getJobLabel(type) {
+    return type === 'lotw_sync' ? 'LoTW Sync' : 'DCL Sync';
+  }
+
+  function getStatusBadge(status) {
+    const styles = {
+      pending: 'bg-yellow-100 text-yellow-800',
+      running: 'bg-blue-100 text-blue-800',
+      completed: 'bg-green-100 text-green-800',
+      failed: 'bg-red-100 text-red-800',
+      cancelled: 'bg-purple-100 text-purple-800',
+    };
+    return styles[status] || 'bg-gray-100 text-gray-800';
+  }
+
+  function formatTime(timestamp) {
+    if (!timestamp) return '-';
+    const date = new Date(timestamp);
+    return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
+  }
+
+  function formatDate(timestamp) {
+    if (!timestamp) return '-';
+    const date = new Date(timestamp);
+    const now = new Date();
+    const diffMs = now - date;
+    const diffMins = Math.floor(diffMs / 60000);
+    const diffHours = Math.floor(diffMs / 3600000);
+    const diffDays = Math.floor(diffMs / 86400000);
+
+    if (diffMins < 1) return 'Just now';
+    if (diffMins < 60) return `${diffMins}m ago`;
+    if (diffHours < 24) return `${diffHours}h ago`;
+    if (diffDays < 7) return `${diffDays}d ago`;
+    return date.toLocaleDateString();
+  }
+
+  function getDuration(job) {
+    if (!job.startedAt || !job.completedAt) return null;
+    const diff = new Date(job.completedAt) - new Date(job.startedAt);
+    const seconds = Math.floor(diff / 1000);
+    if (seconds < 60) return `${seconds}s`;
+    const minutes = Math.floor(seconds / 60);
+    return `${minutes}m ${seconds % 60}s`;
+  }
 </script>
 
 <div class="container">
@@ -40,6 +187,99 @@
         </div>
       </div>
 
+      <!-- Recent Sync Jobs -->
+      <div class="jobs-section">
+        <h2 class="section-title">🔄 Recent Sync Jobs</h2>
+        {#if loading}
+          <div class="loading-state">Loading jobs...</div>
+        {:else if jobs.length === 0}
+          <div class="empty-state">
+            <p>No sync jobs yet. Sync your QSOs from LoTW or DCL to get started!</p>
+            <div class="empty-actions">
+              <a href="/settings" class="btn btn-secondary">Configure Credentials</a>
+              <a href="/qsos" class="btn btn-primary">Sync QSOs</a>
+            </div>
+          </div>
+        {:else}
+          <div class="jobs-list">
+            {#each jobs as job (job.id)}
+              <div class="job-card" class:failed={job.status === 'failed'}>
+                <div class="job-header">
+                  <div class="job-title">
+                    <span class="job-icon">{getJobIcon(job.type)}</span>
+                    <span class="job-name">{getJobLabel(job.type)}</span>
+                    <span class="job-id">#{job.id}</span>
+                  </div>
+                  <span class="status-badge {getStatusBadge(job.status)}">
+                    {job.status}
+                  </span>
+                </div>
+
+                <div class="job-meta">
+                  <span class="job-date" title={new Date(job.createdAt).toLocaleString()}>
+                    {formatDate(job.createdAt)}
+                  </span>
+                  {#if job.startedAt}
+                    <span class="job-time">{formatTime(job.startedAt)}</span>
+                  {/if}
+                  {#if getDuration(job)}
+                    <span class="job-duration">({getDuration(job)})</span>
+                  {/if}
+                </div>
+
+                {#if job.status === 'failed' && job.error}
+                  <div class="job-error">
+                    ❌ {job.error}
+                  </div>
+                {:else if job.result}
+                  <div class="job-stats">
+                    {#if job.result.total !== undefined}
+                      <span class="stat-item">
+                        <strong>{job.result.total}</strong> total
+                      </span>
+                    {/if}
+                    {#if job.result.added !== undefined && job.result.added > 0}
+                      <span class="stat-item stat-added">
+                        +{job.result.added} added
+                      </span>
+                    {/if}
+                    {#if job.result.updated !== undefined && job.result.updated > 0}
+                      <span class="stat-item stat-updated">
+                        ~{job.result.updated} updated
+                      </span>
+                    {/if}
+                    {#if job.result.skipped !== undefined && job.result.skipped > 0}
+                      <span class="stat-item stat-skipped">
+                        {job.result.skipped} skipped
+                      </span>
+                    {/if}
+                  </div>
+                {:else if job.status === 'running' || job.status === 'pending'}
+                  <div class="job-progress">
+                    <span class="progress-text">
+                      {job.status === 'pending' ? 'Waiting to start...' : isJobStale(job) ? 'Stale - no progress for over 1 hour' : 'Processing...'}
+                    </span>
+                  </div>
+                {/if}
+
+                <!-- Cancel button for eligible jobs -->
+                {#if canCancelJob(job)}
+                  <div class="job-actions">
+                    <button
+                      class="btn-cancel"
+                      disabled={cancellingJobs.get(job.id)}
+                      on:click|stopPropagation={() => cancelJob(job.id)}
+                    >
+                      {cancellingJobs.get(job.id) ? 'Cancelling...' : 'Cancel & Rollback'}
+                    </button>
+                  </div>
+                {/if}
+              </div>
+            {/each}
+          </div>
+        {/if}
+      </div>
+
       <div class="info-box">
         <h3>Getting Started</h3>
         <ol>
@@ -191,4 +431,232 @@
     color: #666;
     line-height: 1.8;
   }
+
+  /* Jobs Section */
+  .jobs-section {
+    margin-bottom: 2rem;
+  }
+
+  .section-title {
+    font-size: 1.5rem;
+    color: #333;
+    margin-bottom: 1rem;
+  }
+
+  .loading-state,
+  .empty-state {
+    background: white;
+    border: 1px solid #e0e0e0;
+    border-radius: 8px;
+    padding: 2rem;
+    text-align: center;
+    color: #666;
+  }
+
+  .empty-actions {
+    display: flex;
+    gap: 1rem;
+    justify-content: center;
+    margin-top: 1.5rem;
+    flex-wrap: wrap;
+  }
+
+  .jobs-list {
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+  }
+
+  .job-card {
+    background: white;
+    border: 1px solid #e0e0e0;
+    border-radius: 8px;
+    padding: 1rem 1.25rem;
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+    transition: box-shadow 0.2s;
+  }
+
+  .job-card:hover {
+    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
+  }
+
+  .job-card.failed {
+    border-left: 4px solid #dc3545;
+  }
+
+  .job-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 0.5rem;
+  }
+
+  .job-title {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+  }
+
+  .job-icon {
+    font-size: 1.5rem;
+  }
+
+  .job-name {
+    font-weight: 600;
+    color: #333;
+    font-size: 1.1rem;
+  }
+
+  .job-id {
+    font-size: 0.85rem;
+    color: #999;
+    font-family: monospace;
+  }
+
+  .status-badge {
+    padding: 0.25rem 0.75rem;
+    border-radius: 12px;
+    font-size: 0.85rem;
+    font-weight: 500;
+    text-transform: capitalize;
+  }
+
+  .bg-yellow-100 {
+    background-color: #fef3c7;
+  }
+
+  .bg-blue-100 {
+    background-color: #dbeafe;
+  }
+
+  .bg-green-100 {
+    background-color: #d1fae5;
+  }
+
+  .bg-red-100 {
+    background-color: #fee2e2;
+  }
+
+  .text-yellow-800 {
+    color: #92400e;
+  }
+
+  .text-blue-800 {
+    color: #1e40af;
+  }
+
+  .text-green-800 {
+    color: #065f46;
+  }
+
+  .text-red-800 {
+    color: #991b1b;
+  }
+
+  .bg-purple-100 {
+    background-color: #f3e8ff;
+  }
+
+  .text-purple-800 {
+    color: #6b21a8;
+  }
+
+  .job-meta {
+    display: flex;
+    gap: 0.75rem;
+    font-size: 0.9rem;
+    color: #666;
+    margin-bottom: 0.5rem;
+    flex-wrap: wrap;
+  }
+
+  .job-date {
+    font-weight: 500;
+  }
+
+  .job-time,
+  .job-duration {
+    color: #999;
+  }
+
+  .job-error {
+    background: #fee2e2;
+    color: #991b1b;
+    padding: 0.75rem;
+    border-radius: 4px;
+    font-size: 0.95rem;
+    margin-top: 0.5rem;
+  }
+
+  .job-stats {
+    display: flex;
+    gap: 1rem;
+    flex-wrap: wrap;
+    margin-top: 0.5rem;
+  }
+
+  .stat-item {
+    font-size: 0.9rem;
+    color: #666;
+    padding: 0.25rem 0.5rem;
+    background: #f8f9fa;
+    border-radius: 4px;
+  }
+
+  .stat-item strong {
+    color: #333;
+  }
+
+  .stat-added {
+    color: #065f46;
+    background: #d1fae5;
+  }
+
+  .stat-updated {
+    color: #1e40af;
+    background: #dbeafe;
+  }
+
+  .stat-skipped {
+    color: #92400e;
+    background: #fef3c7;
+  }
+
+  .job-progress {
+    margin-top: 0.5rem;
+  }
+
+  .progress-text {
+    color: #1e40af;
+    font-size: 0.9rem;
+    font-style: italic;
+  }
+
+  .job-actions {
+    margin-top: 0.75rem;
+    display: flex;
+    justify-content: flex-end;
+  }
+
+  .btn-cancel {
+    padding: 0.4rem 0.8rem;
+    font-size: 0.85rem;
+    border: 1px solid #dc3545;
+    background: white;
+    color: #dc3545;
+    border-radius: 4px;
+    cursor: pointer;
+    transition: all 0.2s;
+    font-weight: 500;
+  }
+
+  .btn-cancel:hover:not(:disabled) {
+    background: #dc3545;
+    color: white;
+  }
+
+  .btn-cancel:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+  }
 </style>

src/frontend/src/routes/awards/+page.svelte

@@ -2,7 +2,10 @@
   import { onMount } from 'svelte';
   import { auth } from '$lib/stores.js';
 
+  let allAwards = [];
   let awards = [];
+  let categories = [];
+  let selectedCategory = 'all';
   let loading = true;
   let error = null;
 
@@ -16,69 +19,94 @@
       error = null;
 
       // Get awards from API
-      const response = await fetch('/api/awards', {
+      const awardsResponse = await fetch('/api/awards', {
         headers: {
           'Authorization': `Bearer ${$auth.token}`,
         },
       });
 
-      if (!response.ok) {
+      if (!awardsResponse.ok) {
         throw new Error('Failed to load awards');
       }
 
-      const data = await response.json();
+      const awardsData = await awardsResponse.json();
 
-      if (!data.success) {
+      if (!awardsData.success) {
-        throw new Error(data.error || 'Failed to load awards');
+        throw new Error(awardsData.error || 'Failed to load awards');
       }
 
-      // Load progress for each award
+      // Get progress for all awards in a single batch request (fixes N+1 problem)
-      awards = await Promise.all(
+      const progressResponse = await fetch('/api/awards/batch/progress', {
-        data.awards.map(async (award) => {
-          try {
-            const progressResponse = await fetch(`/api/awards/${award.id}/progress`, {
         headers: {
           'Authorization': `Bearer ${$auth.token}`,
         },
       });
 
+      let progressMap = {};
       if (progressResponse.ok) {
         const progressData = await progressResponse.json();
-              if (progressData.success) {
+        if (progressData.success && progressData.awards) {
-                return {
+          // Create a map of awardId -> progress for quick lookup
-                  ...award,
+          progressMap = Object.fromEntries(
-                  progress: progressData,
+            progressData.awards.map(p => [p.awardId, p])
-                };
+          );
         }
       }
-          } catch (e) {
-            console.error(`Failed to load progress for ${award.id}:`, e);
-          }
 
-          // Return award without progress if it failed
+      // Combine awards with their progress
-          return {
+      allAwards = awardsData.awards.map(award => ({
         ...award,
-            progress: {
+        progress: progressMap[award.id] || {
           worked: 0,
           confirmed: 0,
           target: award.rules?.target || 0,
           percentage: 0,
         },
-          };
+      }));
-        })
+
-      );
+      // Extract unique categories
+      categories = ['all', ...new Set(allAwards.map(a => a.category).filter(Boolean))];
+
+      // Apply filter
+      applyFilter();
     } catch (e) {
       error = e.message;
     } finally {
       loading = false;
     }
   }
+
+  function applyFilter() {
+    if (selectedCategory === 'all') {
+      awards = allAwards;
+    } else {
+      awards = allAwards.filter(award => award.category === selectedCategory);
+    }
+  }
+
+  function onCategoryChange(event) {
+    selectedCategory = event.target.value;
+    applyFilter();
+  }
 </script>
 
 <div class="container">
   <h1>Awards</h1>
   <p class="subtitle">Track your ham radio award progress</p>
 
+  {#if !loading && awards.length > 0}
+    <div class="filters">
+      <div class="filter-group">
+        <label for="category-filter">Category:</label>
+        <select id="category-filter" value={selectedCategory} on:change={onCategoryChange}>
+          {#each categories as category}
+            <option value={category}>{category === 'all' ? 'All Awards' : category.toUpperCase()}</option>
+          {/each}
+        </select>
+      </div>
+    </div>
+  {/if}
+
   {#if loading}
     <div class="loading">Loading awards...</div>
   {:else if error}
@@ -162,6 +190,45 @@
     margin-bottom: 2rem;
   }
 
+  .filters {
+    display: flex;
+    gap: 1rem;
+    margin-bottom: 2rem;
+    align-items: center;
+  }
+
+  .filter-group {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+  }
+
+  .filter-group label {
+    font-weight: 600;
+    color: #333;
+    font-size: 0.9rem;
+  }
+
+  .filter-group select {
+    padding: 0.5rem 1rem;
+    border: 1px solid #ccc;
+    border-radius: 4px;
+    background-color: white;
+    font-size: 0.9rem;
+    cursor: pointer;
+    min-width: 150px;
+  }
+
+  .filter-group select:hover {
+    border-color: #4a90e2;
+  }
+
+  .filter-group select:focus {
+    outline: none;
+    border-color: #4a90e2;
+    box-shadow: 0 0 0 2px rgba(74, 144, 226, 0.2);
+  }
+
   .loading,
   .error,
   .empty {

src/frontend/src/routes/awards/[id]/+page.svelte

@@ -7,10 +7,14 @@
   let entities = [];
   let loading = true;
   let error = null;
-  let sort = 'name'; // name
   let groupedData = [];
   let bands = [];
 
+  // QSO detail modal state
+  let selectedQSO = null;
+  let showQSODetailModal = false;
+  let loadingQSO = false;
+
   onMount(async () => {
     await loadAwardData();
   });
@@ -79,8 +83,10 @@
 
         // Add QSO info to this band
         entityData.bands.get(entity.band).push({
+          qsoId: entity.qsoId,
           callsign: entity.callsign,
           mode: entity.mode,
+          band: entity.band,
           confirmed: entity.confirmed,
           qsoDate: entity.qsoDate,
         });
@@ -126,8 +132,10 @@
         }
 
         entityData.bands.get(entity.band).push({
+          qsoId: entity.qsoId,
           callsign: entity.callsign,
           mode: entity.mode,
+          band: entity.band,
           confirmed: entity.confirmed,
           qsoDate: entity.qsoDate,
         });
@@ -155,6 +163,93 @@
   $: if (entities.length > 0) {
     applyFilter();
   }
+
+  // Calculate band sums
+  $: bandSums = (() => {
+    const sums = new Map();
+    const hasPoints = entities.length > 0 && entities[0].points !== undefined;
+
+    bands.forEach(band => {
+      if (hasPoints) {
+        // Sum points for confirmed QSOs in this band
+        const sum = entities
+          .filter(e => e.band === band && e.confirmed)
+          .reduce((total, e) => total + (e.points || 0), 0);
+        sums.set(band, sum);
+      } else {
+        // Count confirmed QSOs in this band
+        const count = entities.filter(e => e.band === band && e.confirmed).length;
+        sums.set(band, count);
+      }
+    });
+
+    return sums;
+  })();
+
+  // QSO Detail Modal Functions
+  async function openQSODetailModal(qso) {
+    loadingQSO = true;
+    showQSODetailModal = true;
+    selectedQSO = null;
+
+    try {
+      // Fetch full QSO details by ID
+      const response = await fetch(`/api/qsos/${qso.qsoId}`, {
+        headers: {
+          'Authorization': `Bearer ${$auth.token}`,
+        },
+      });
+
+      if (!response.ok) {
+        throw new Error('Failed to fetch QSO details');
+      }
+
+      const data = await response.json();
+
+      if (!data.success) {
+        throw new Error(data.error || 'Failed to fetch QSO details');
+      }
+
+      if (data.qso) {
+        selectedQSO = data.qso;
+      } else {
+        throw new Error('QSO not found');
+      }
+    } catch (err) {
+      console.error('Failed to load QSO details:', err);
+      alert('Failed to load QSO details: ' + err.message);
+      showQSODetailModal = false;
+    } finally {
+      loadingQSO = false;
+    }
+  }
+
+  function closeQSODetailModal() {
+    selectedQSO = null;
+    showQSODetailModal = false;
+  }
+
+  function formatDate(dateStr) {
+    if (!dateStr) return '-';
+    // ADIF format: YYYYMMDD
+    const year = dateStr.substring(0, 4);
+    const month = dateStr.substring(4, 6);
+    const day = dateStr.substring(6, 8);
+    return `${day}/${month}/${year}`;
+  }
+
+  function formatTime(timeStr) {
+    if (!timeStr) return '-';
+    // ADIF format: HHMMSS or HHMM
+    return timeStr.substring(0, 2) + ':' + timeStr.substring(2, 4);
+  }
+
+  function getConfirmationStatus(status) {
+    if (status === 'Y') return { label: 'Confirmed', class: 'confirmed' };
+    if (status === 'N') return { label: 'Not Confirmed', class: 'not-confirmed' };
+    if (status === '?') return { label: 'Unknown', class: 'unknown' };
+    return { label: 'No Data', class: 'no-data' };
+  }
 </script>
 
 <div class="container">
@@ -175,15 +270,6 @@
       <a href="/awards" class="back-link">← Back to Awards</a>
     </div>
 
-    <div class="controls">
-      <div class="sort-group">
-        <label>Sort by:</label>
-        <select bind:value={sort}>
-          <option value="name">Name</option>
-        </select>
-      </div>
-    </div>
-
     <div class="summary">
       {#if entities.length > 0 && entities[0].points !== undefined}
         {@const earnedPoints = entities.reduce((sum, e) => sum + (e.confirmed ? e.points : 0), 0)}
@@ -257,7 +343,13 @@
                     {#if qsos.length > 0}
                       <div class="qso-list">
                         {#each qsos as qso}
-                          <div class="qso-entry {qso.confirmed ? 'qso-confirmed' : 'qso-worked'}">
+                          <div
+                            class="qso-entry {qso.confirmed ? 'qso-confirmed' : 'qso-worked'}"
+                            on:click={() => openQSODetailModal(qso)}
+                            on:keydown={(e) => e.key === 'Enter' && openQSODetailModal(qso)}
+                            role="button"
+                            tabindex="0"
+                          >
                             <span class="callsign">{qso.callsign}</span>
                             <span class="mode">{qso.mode}</span>
                           </div>
@@ -271,12 +363,207 @@
               </tr>
             {/each}
           </tbody>
+          <tfoot>
+            <tr class="sum-row">
+              <td class="sum-label">
+                <strong>Sum</strong>
+              </td>
+              {#each bands as band}
+                {@const sum = bandSums.get(band) ?? 0}
+                <td class="sum-cell">
+                  <strong>{sum}</strong>
+                </td>
+              {/each}
+            </tr>
+          </tfoot>
         </table>
       {/if}
     </div>
   {/if}
 </div>
 
+<!-- QSO Detail Modal -->
+{#if showQSODetailModal && selectedQSO}
+  <div class="modal-backdrop" on:click={closeQSODetailModal} on:keydown={(e) => e.key === 'Escape' && closeQSODetailModal()} role="dialog" aria-modal="true">
+    <div class="modal-content" on:click|stopPropagation>
+      <div class="modal-header">
+        <h2>QSO Details</h2>
+        <button class="modal-close" on:click={closeQSODetailModal} aria-label="Close modal">×</button>
+      </div>
+
+      <div class="modal-body">
+        {#if loadingQSO}
+          <div class="loading-modal">Loading QSO details...</div>
+        {:else}
+          <div class="qso-detail-section">
+            <h3>Basic Information</h3>
+            <div class="detail-grid">
+              <div class="detail-item">
+                <span class="detail-label">Callsign:</span>
+                <span class="detail-value">{selectedQSO.callsign}</span>
+              </div>
+              <div class="detail-item">
+                <span class="detail-label">Date:</span>
+                <span class="detail-value">{formatDate(selectedQSO.qsoDate)}</span>
+              </div>
+              <div class="detail-item">
+                <span class="detail-label">Time:</span>
+                <span class="detail-value">{formatTime(selectedQSO.timeOn)}</span>
+              </div>
+              <div class="detail-item">
+                <span class="detail-label">Band:</span>
+                <span class="detail-value">{selectedQSO.band || '-'}</span>
+              </div>
+              <div class="detail-item">
+                <span class="detail-label">Mode:</span>
+                <span class="detail-value">{selectedQSO.mode || '-'}</span>
+              </div>
+            </div>
+          </div>
+
+          <div class="qso-detail-section">
+            <h3>Location</h3>
+            <div class="detail-grid">
+              <div class="detail-item">
+                <span class="detail-label">Entity:</span>
+                <span class="detail-value">{selectedQSO.entity || '-'}</span>
+              </div>
+              {#if selectedQSO.entityId}
+                <div class="detail-item">
+                  <span class="detail-label">DXCC ID:</span>
+                  <span class="detail-value">{selectedQSO.entityId}</span>
+                </div>
+              {/if}
+              <div class="detail-item">
+                <span class="detail-label">Grid Square:</span>
+                <span class="detail-value">{selectedQSO.grid || '-'}</span>
+              </div>
+              {#if selectedQSO.gridSource}
+                <div class="detail-item">
+                  <span class="detail-label">Grid Source:</span>
+                  <span class="detail-value">{selectedQSO.gridSource}</span>
+                </div>
+              {/if}
+              <div class="detail-item">
+                <span class="detail-label">Continent:</span>
+                <span class="detail-value">{selectedQSO.continent || '-'}</span>
+              </div>
+              {#if selectedQSO.cqZone}
+                <div class="detail-item">
+                  <span class="detail-label">CQ Zone:</span>
+                  <span class="detail-value">{selectedQSO.cqZone}</span>
+                </div>
+              {/if}
+              {#if selectedQSO.ituZone}
+                <div class="detail-item">
+                  <span class="detail-label">ITU Zone:</span>
+                  <span class="detail-value">{selectedQSO.ituZone}</span>
+                </div>
+              {/if}
+              {#if selectedQSO.state}
+                <div class="detail-item">
+                  <span class="detail-label">State:</span>
+                  <span class="detail-value">{selectedQSO.state}</span>
+                </div>
+              {/if}
+              {#if selectedQSO.county}
+                <div class="detail-item">
+                  <span class="detail-label">County:</span>
+                  <span class="detail-value">{selectedQSO.county}</span>
+                </div>
+              {/if}
+            </div>
+          </div>
+
+          {#if selectedQSO.satName}
+            <div class="qso-detail-section">
+              <h3>Satellite</h3>
+              <div class="detail-grid">
+                <div class="detail-item">
+                  <span class="detail-label">Satellite:</span>
+                  <span class="detail-value">{selectedQSO.satName}</span>
+                </div>
+                {#if selectedQSO.satMode}
+                  <div class="detail-item">
+                    <span class="detail-label">Mode:</span>
+                    <span class="detail-value">{selectedQSO.satMode}</span>
+                  </div>
+                {/if}
+              </div>
+            </div>
+          {/if}
+
+          <div class="qso-detail-section">
+            <h3>DOK Information</h3>
+            <div class="detail-grid">
+              <div class="detail-item">
+                <span class="detail-label">Partner's DOK:</span>
+                <span class="detail-value">{selectedQSO.darcDok || '-'}</span>
+              </div>
+              <div class="detail-item">
+                <span class="detail-label">My DOK:</span>
+                <span class="detail-value">{selectedQSO.myDarcDok || '-'}</span>
+              </div>
+            </div>
+          </div>
+
+          <div class="qso-detail-section">
+            <h3>Confirmation Status</h3>
+            <div class="confirmation-details">
+              <div class="confirmation-service">
+                <h4>LoTW</h4>
+                <div class="confirmation-status-item">
+                  <span class="detail-label">Status:</span>
+                  <span class="status-badge {getConfirmationStatus(selectedQSO.lotwQslRstatus).class}">
+                    {getConfirmationStatus(selectedQSO.lotwQslRstatus).label}
+                  </span>
+                </div>
+                {#if selectedQSO.lotwQslRdate}
+                  <div class="confirmation-status-item">
+                    <span class="detail-label">Confirmed:</span>
+                    <span class="detail-value">{formatDate(selectedQSO.lotwQslRdate)}</span>
+                  </div>
+                {/if}
+                {#if selectedQSO.lotwSyncedAt}
+                  <div class="confirmation-status-item">
+                    <span class="detail-label">Last Synced:</span>
+                    <span class="detail-value">{new Date(selectedQSO.lotwSyncedAt).toLocaleString()}</span>
+                  </div>
+                {/if}
+              </div>
+
+              <div class="confirmation-service">
+                <h4>DCL</h4>
+                <div class="confirmation-status-item">
+                  <span class="detail-label">Status:</span>
+                  <span class="status-badge {getConfirmationStatus(selectedQSO.dclQslRstatus).class}">
+                    {getConfirmationStatus(selectedQSO.dclQslRstatus).label}
+                  </span>
+                </div>
+                {#if selectedQSO.dclQslRdate}
+                  <div class="confirmation-status-item">
+                    <span class="detail-label">Confirmed:</span>
+                    <span class="detail-value">{formatDate(selectedQSO.dclQslRdate)}</span>
+                  </div>
+                {/if}
+              </div>
+            </div>
+          </div>
+
+          <div class="qso-detail-section meta-info">
+            <span class="meta-label">QSO ID:</span>
+            <span class="meta-value">{selectedQSO.id}</span>
+            {#if selectedQSO.createdAt}
+              <span class="meta-label">Created:</span>
+              <span class="meta-value">{new Date(selectedQSO.createdAt).toLocaleString()}</span>
+            {/if}
+          </div>
+        {/if}
+      </div>
+    </div>
+  </div>
+{/if}
+
 <style>
   .container {
     max-width: 1200px;
@@ -307,6 +594,28 @@
     padding: 0px 3px 0px 3px;
 }
 
+   .award-table tfoot {
+    background-color: #f5f5f5;
+    border-top: 2px solid #333;
+   }
+
+   .sum-row td {
+    border: 1px solid #000;
+    padding: 8px 5px;
+    text-align: center;
+    background-color: #f5f5f5;
+    font-weight: 600;
+   }
+
+   .sum-label {
+    text-align: left !important;
+    color: #333;
+   }
+
+   .sum-cell {
+    color: #4a90e2;
+   }
+
   .award-header {
     margin-bottom: 2rem;
   }
@@ -345,34 +654,6 @@
     text-decoration: underline;
   }
 
-  .controls {
-    display: flex;
-    gap: 2rem;
-    margin-bottom: 2rem;
-    flex-wrap: wrap;
-  }
-
-  .filter-group,
-  .sort-group {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-  }
-
-  label {
-    font-weight: 600;
-    color: #333;
-  }
-
-  select {
-    padding: 0.5rem;
-    border: 1px solid #ddd;
-    border-radius: 4px;
-    background-color: white;
-    font-size: 1rem;
-    cursor: pointer;
-  }
-
   .summary {
     display: grid;
     grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
@@ -536,4 +817,224 @@
   .btn:hover {
     background-color: #357abd;
   }
+
+  /* QSO Detail Modal Styles */
+  .qso-entry {
+    cursor: pointer;
+    transition: background-color 0.2s;
+    padding: 0.25rem 0.5rem;
+    border-radius: 4px;
+  }
+
+  .qso-entry:hover {
+    background-color: #f0f7ff;
+  }
+
+  .qso-entry:focus {
+    outline: 2px solid #4a90e2;
+    outline-offset: -2px;
+  }
+
+  /* Modal Backdrop */
+  .modal-backdrop {
+    position: fixed;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background-color: rgba(0, 0, 0, 0.5);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 1000;
+    padding: 1rem;
+  }
+
+  /* Modal Content */
+  .modal-content {
+    background: white;
+    border-radius: 8px;
+    max-width: 700px;
+    width: 100%;
+    max-height: 90vh;
+    overflow-y: auto;
+    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
+  }
+
+  /* Modal Header */
+  .modal-header {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    padding: 1.5rem;
+    border-bottom: 1px solid #e0e0e0;
+  }
+
+  .modal-header h2 {
+    margin: 0;
+    font-size: 1.5rem;
+    color: #333;
+  }
+
+  .modal-close {
+    background: none;
+    border: none;
+    font-size: 2rem;
+    line-height: 1;
+    cursor: pointer;
+    padding: 0;
+    width: 2rem;
+    height: 2rem;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    color: #666;
+    border-radius: 4px;
+    transition: all 0.2s;
+  }
+
+  .modal-close:hover {
+    background-color: #f0f0f0;
+    color: #333;
+  }
+
+  /* Modal Body */
+  .modal-body {
+    padding: 1.5rem;
+  }
+
+  /* Loading State */
+  .loading-modal {
+    text-align: center;
+    padding: 3rem;
+    color: #666;
+  }
+
+  /* Detail Sections */
+  .qso-detail-section {
+    margin-bottom: 2rem;
+  }
+
+  .qso-detail-section:last-child {
+    margin-bottom: 0;
+  }
+
+  .qso-detail-section h3 {
+    font-size: 1.1rem;
+    color: #4a90e2;
+    margin: 0 0 1rem 0;
+    padding-bottom: 0.5rem;
+    border-bottom: 2px solid #e0e0e0;
+  }
+
+  /* Detail Grid */
+  .detail-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
+    gap: 1rem;
+  }
+
+  .detail-item {
+    display: flex;
+    flex-direction: column;
+    gap: 0.25rem;
+  }
+
+  .detail-label {
+    font-size: 0.75rem;
+    color: #666;
+    text-transform: uppercase;
+    font-weight: 600;
+  }
+
+  .detail-value {
+    font-size: 0.95rem;
+    color: #333;
+    font-weight: 500;
+  }
+
+  /* Confirmation Details */
+  .confirmation-details {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
+    gap: 2rem;
+  }
+
+  .confirmation-service h4 {
+    font-size: 1rem;
+    color: #333;
+    margin: 0 0 1rem 0;
+    padding-bottom: 0.5rem;
+    border-bottom: 1px solid #e0e0e0;
+  }
+
+  .confirmation-status-item {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    margin-bottom: 0.75rem;
+  }
+
+  /* Status Badges */
+  .status-badge {
+    padding: 0.25rem 0.75rem;
+    border-radius: 12px;
+    font-size: 0.75rem;
+    font-weight: 600;
+    text-transform: uppercase;
+  }
+
+  .status-badge.confirmed {
+    background-color: #4a90e2;
+    color: white;
+  }
+
+  .status-badge.not-confirmed,
+  .status-badge.no-data {
+    background-color: #e0e0e0;
+    color: #666;
+  }
+
+  .status-badge.unknown {
+    background-color: #fff3cd;
+    color: #856404;
+  }
+
+  /* Meta Info */
+  .meta-info {
+    display: flex;
+    gap: 2rem;
+    padding: 1rem;
+    background-color: #f8f9fa;
+    border-radius: 4px;
+    font-size: 0.8rem;
+  }
+
+  .meta-label {
+    color: #666;
+    font-weight: 600;
+  }
+
+  .meta-value {
+    color: #333;
+    font-family: monospace;
+  }
+
+  /* Scrollbar Styling for Modal */
+  .modal-content::-webkit-scrollbar {
+    width: 8px;
+  }
+
+  .modal-content::-webkit-scrollbar-track {
+    background: #f1f1f1;
+  }
+
+  .modal-content::-webkit-scrollbar-thumb {
+    background: #888;
+    border-radius: 4px;
+  }
+
+  .modal-content::-webkit-scrollbar-thumb:hover {
+    background: #555;
+  }
 </style>

src/frontend/src/routes/qsos/components/QSOStats.svelte

@@ -0,0 +1,52 @@
+<script>
+  export let stats;
+</script>
+
+{#if stats}
+  <div class="stats-grid">
+    <div class="stat-card">
+      <div class="stat-value">{stats.total}</div>
+      <div class="stat-label">Total QSOs</div>
+    </div>
+    <div class="stat-card">
+      <div class="stat-value">{stats.confirmed}</div>
+      <div class="stat-label">Confirmed</div>
+    </div>
+    <div class="stat-card">
+      <div class="stat-value">{stats.uniqueEntities}</div>
+      <div class="stat-label">DXCC Entities</div>
+    </div>
+    <div class="stat-card">
+      <div class="stat-value">{stats.uniqueBands}</div>
+      <div class="stat-label">Bands</div>
+    </div>
+  </div>
+{/if}
+
+<style>
+  .stats-grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
+    gap: 1rem;
+    margin-bottom: 2rem;
+  }
+
+  .stat-card {
+    background: white;
+    border: 1px solid #e0e0e0;
+    border-radius: 8px;
+    padding: 1.5rem;
+    text-align: center;
+  }
+
+  .stat-value {
+    font-size: 2rem;
+    font-weight: bold;
+    color: #4a90e2;
+  }
+
+  .stat-label {
+    color: #666;
+    margin-top: 0.5rem;
+  }
+</style>

src/frontend/src/routes/qsos/components/SyncButton.svelte

@@ -0,0 +1,40 @@
+<script>
+  export let service = 'lotw'; // 'lotw' or 'dcl'
+  export let syncStatus = null;
+  export let deleting = false;
+  export let onSync = () => {};
+
+  $: isRunning = syncStatus === 'running' || syncStatus === 'pending';
+  $: buttonClass = service === 'lotw' ? 'lotw-btn' : 'dcl-btn';
+  $: label = service === 'lotw' ? 'LoTW' : 'DCL';
+</script>
+
+<button
+  class="btn btn-primary {buttonClass}"
+  on:click={onSync}
+  disabled={isRunning || deleting}
+>
+  {#if isRunning}
+    {label} Syncing...
+  {:else}
+    Sync from {label}
+  {/if}
+</button>
+
+<style>
+  .lotw-btn {
+    background-color: #4a90e2;
+  }
+
+  .lotw-btn:hover:not(:disabled) {
+    background-color: #357abd;
+  }
+
+  .dcl-btn {
+    background-color: #e67e22;
+  }
+
+  .dcl-btn:hover:not(:disabled) {
+    background-color: #d35400;
+  }
+</style>

src/frontend/src/routes/settings/+page.svelte

@@ -25,14 +25,12 @@
     try {
       loading = true;
       const response = await authAPI.getProfile();
-      console.log('Loaded profile:', response.user);
       if (response.user) {
         lotwUsername = response.user.lotwUsername || '';
         lotwPassword = ''; // Never pre-fill password for security
         hasLoTWCredentials = !!(response.user.lotwUsername && response.user.lotwPassword);
         dclApiKey = response.user.dclApiKey || '';
         hasDCLCredentials = !!response.user.dclApiKey;
-        console.log('Has LoTW credentials:', hasLoTWCredentials, 'Has DCL credentials:', hasDCLCredentials);
       }
     } catch (err) {
       console.error('Failed to load profile:', err);
@@ -50,8 +48,6 @@
       error = null;
       successLoTW = false;
 
-      console.log('Saving LoTW credentials:', { lotwUsername, hasPassword: !!lotwPassword });
-
       await authAPI.updateLoTWCredentials({
         lotwUsername,
         lotwPassword
@@ -78,8 +74,6 @@
       error = null;
       successDCL = false;
 
-      console.log('Saving DCL credentials:', { hasApiKey: !!dclApiKey });
-
       await authAPI.updateDCLCredentials({
         dclApiKey
       });
@@ -194,8 +188,8 @@
   <div class="settings-section">
     <h2>DCL Credentials</h2>
     <p class="help-text">
-      Configure your DARC Community Logbook (DCL) API key for future sync functionality.
+      Configure your DARC Community Logbook (DCL) API key to sync your QSOs.
-      <strong>Note:</strong> DCL does not currently provide a download API. This is prepared for when they add one.
+      Your API key is stored securely and used only to fetch your confirmed QSOs.
     </p>
 
     {#if hasDCLCredentials}
@@ -220,7 +214,7 @@
           placeholder="Your DCL API key"
         />
         <p class="hint">
-          Enter your DCL API key for future sync functionality
+          Enter your DCL API key to sync QSOs
         </p>
       </div>
 
@@ -233,10 +227,10 @@
       <h3>About DCL</h3>
       <p>
         DCL (DARC Community Logbook) is DARC's web-based logbook system for German amateur radio awards.
-        It includes DOK (DARC Ortsverband Kennung) fields for local club awards.
+        It includes DOK (DARC Ortsverband Kennung) fields for local club awards like the DLD award.
       </p>
       <p>
-        <strong>Status:</strong> Download API not yet available.{' '}
+        Once configured, you can sync your QSOs from DCL on the QSO Log page.
         <a href="https://dcl.darc.de/" target="_blank" rel="noopener">
           Visit DCL website
         </a>

src/frontend/vite.config.js

@@ -5,29 +5,42 @@ import { defineConfig } from 'vite';
 function suppressURIErrorPlugin() {
 	return {
 		name: 'suppress-uri-error',
+		enforce: 'pre', // Run this plugin before others
 		configureServer(server) {
-			server.middlewares.use((req, res, next) => {
+			// Return a function that will be called after all plugins are configured
-				// Intercept malformed requests before they reach Vite's middleware
+			// This ensures our middleware is added at the correct time
+			return () => {
+				// Add middleware BEFORE all other middlewares
+				// We insert it at position 0 to ensure it runs first
+				server.middlewares.stack.unshift({
+				 route: '',
+				  handle: (req, res, next) => {
+					// Intercept malformed requests before they reach SvelteKit
 					try {
 						// Try to decode the URL to catch malformed URIs early
 						if (req.url) {
 							decodeURI(req.url);
+							// Also try the full URL construction that SvelteKit does
+							const base = `${server.config.server.https ? 'https' : 'http'}://${
+								req.headers[':authority'] || req.headers.host || 'localhost'
+							}`;
+							decodeURI(new URL(base + req.url).pathname);
 						}
 					} catch (e) {
 						// Silently ignore malformed URIs from browser extensions
-					// Don't call next(), just end the response
 						res.writeHead(200, { 'Content-Type': 'text/plain' });
 						res.end('OK');
 						return;
 					}
 					next();
-			});
+				}});
+			};
 		}
 	};
 }
 
 export default defineConfig({
-	plugins: [sveltekit(), suppressURIErrorPlugin()],
+	plugins: [suppressURIErrorPlugin(), sveltekit()],
 	server: {
 		host: 'localhost',
 		port: 5173,