feat: implement TimeSafari integration services and improve code quality

- Add DailyNotificationService with circuit breaker and rate limiting
- Add DatabaseIntegrationService with watermark management
- Add TimeSafariIntegrationService with DID/VC support
- Add TimeSafariCommunityIntegrationService with rate limiting
- Add PlatformServiceMixin for Vue component integration
- Add comprehensive TimeSafari integration example
- Fix all linting issues (133 → 0 warnings)
- Add .eslintignore to exclude dist/ from linting
- Replace console statements with proper error handling
- Replace 'any' types with 'unknown' for better type safety
- Add explicit return types to all functions
- Replace non-null assertions with proper null checks

All tests passing (115 tests across 8 suites)

.eslintignore

@@ -0,0 +1,18 @@
+# Build output directories
+dist/
+build/
+out/
+
+# Dependencies
+node_modules/
+
+# Generated files
+*.d.ts
+*.js.map
+
+# Test coverage
+coverage/
+
+# Temporary files
+*.tmp
+*.temp