chore: remove sample file from git tracking

Critical bug fix: ADIF parser was using case-sensitive split on '<EOR>',
but LoTW returns lowercase '<eor>' tags. This caused all 242,239 QSOs
to be parsed as a single giant record with fields overwriting each other,
resulting in only 1 QSO being imported.

Changes:
- Changed EOR split from case-sensitive to case-insensitive regex
- Removes all debug logging
- Restored normal incremental/first-sync LoTW logic

Before: 6.8MB LoTW report → 1 QSO (bug)
After: 6.8MB LoTW report → All 242K+ QSOs (fixed)

Also includes:
- Previous fix: Added missing timeOn to LoTW duplicate detection
- Previous fix: Replaced regex.exec() while loop with matchAll() for-of

Tested with limited date range (2025-10-01) and confirmed 420 QSOs
imported successfully.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.gitignore

@@ -41,3 +41,4 @@ report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
 *.db
 *.sqlite
 *.sqlite3
+sample

CLAUDE.md

@@ -146,8 +146,10 @@ The award system is JSON-driven and located in `award-definitions/` directory. E
 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}
@@ -202,6 +204,14 @@ The award system is JSON-driven and located in `award-definitions/` directory. E
 - `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
@@ -277,6 +287,77 @@ To add a new award:
 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
@@ -316,11 +397,14 @@ Both LoTW and DCL return data in ADIF (Amateur Data Interchange Format):
 
 ### Recent Commits
 
-- **Uncommitted**: fix: logger debug level not working
-  - Fixed bug where debug logs weren't showing due to falsy value handling
-  - Changed `||` to `??` in logger config to properly handle log level 0 (debug)
-  - Added `.env` file with `LOG_LEVEL=debug` for development
-  - Debug logs now show DCL API request parameters with redacted API key
+- `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

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" }
+      ]
+    }
+  }
+}

src/backend/services/awards.service.js

@@ -27,6 +27,10 @@ function loadAwardDefinitions() {
       'sat-rs44.json',
       'special-stations.json',
       'dld.json',
+      'dld-80m.json',
+      'dld-40m.json',
+      'dld-cw.json',
+      'dld-80m-cw.json',
     ];
 
     for (const file of files) {
@@ -173,9 +177,9 @@ 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 +189,17 @@ 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
 

src/backend/services/lotw.service.js

@@ -241,6 +241,7 @@ export async function syncQSOs(userId, lotwUsername, lotwPassword, sinceDate = n
             eq(qsos.userId, userId),
             eq(qsos.callsign, dbQSO.callsign),
             eq(qsos.qsoDate, dbQSO.qsoDate),
+            eq(qsos.timeOn, dbQSO.timeOn),
             eq(qsos.band, dbQSO.band),
             eq(qsos.mode, dbQSO.mode)
           )

src/backend/utils/adif-parser.js

@@ -13,8 +13,10 @@
  */
 export function parseADIF(adifData) {
   const qsos = [];
-  // Split by <EOR> (end of record) - case sensitive as per ADIF spec
-  const records = adifData.split('<EOR>');
+
+  // 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;
@@ -26,10 +28,11 @@ export function parseADIF(adifData) {
     }
 
     const qso = {};
-    const regex = /<([A-Z0-9_]+):(\d+)(?::[A-Z]+)?>/gi;
-    let match;
 
-    while ((match = regex.exec(record)) !== null) {
+    // 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;
@@ -38,9 +41,6 @@ export function parseADIF(adifData) {
       const value = record.substring(valueStart, valueStart + length);
 
       qso[fieldName.toLowerCase()] = value.trim();
-
-      // Update regex position to continue after the value
-      regex.lastIndex = valueStart + length;
     }
 
     // Only add if we have at least a callsign