refactor: simplify codebase and replace external dependencies with Bun built-ins

Backend changes:
- Merge duplicate award logic (calculatePointsAwardProgress + getPointsAwardEntityBreakdown)
- Simplify LoTW service (merge syncQSOs functions, simplify polling)
- Remove job queue abstraction (hardcode LoTW sync, remove processor registry)
- Consolidate config files (database.js, logger.js, jwt.js → single config.js)
- Replace bcrypt with Bun.password.hash/verify
- Replace Pino logger with console-based logger
- Fix: export syncQSOs and getLastLoTWQSLDate for job queue imports
- Fix: correct database path resolution using new URL()

Frontend changes:
- Simplify auth store (remove localStorage wrappers, reduce from 222→109 lines)
- Consolidate API layer (remove verbose JSDoc, 180→80 lines)
- Add shared UI components (Loading, ErrorDisplay, BackButton)

Dependencies:
- Remove bcrypt (replaced with Bun.password)
- Remove pino and pino-pretty (replaced with console logger)

Total: ~445 lines removed (net), 3 dependencies removed
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

package.json

@@ -25,10 +25,7 @@
     "@elysiajs/cors": "^1.4.1",
     "@elysiajs/jwt": "^1.4.0",
     "@elysiajs/static": "^1.4.7",
-    "bcrypt": "^6.0.0",
     "drizzle-orm": "^0.45.1",
-    "elysia": "^1.4.22",
-    "pino": "^10.2.0",
-    "pino-pretty": "^13.1.3"
+    "elysia": "^1.4.22"
   }
 }