Complete Enhanced Triple Migration Pattern for PhotoDialog and OfferDialog components

- Implement 4-phase migration pattern: Database + SQL + Notifications + Template Streamlining
- PhotoDialog.vue: Replace databaseUtil with PlatformServiceMixin, add 8 notification constants, extract 11 computed properties
- OfferDialog.vue: Replace databaseUtil with PlatformServiceMixin, add 7 notification constants, extract CSS classes to computed properties
- Update migration template with Phase 4 (Template Streamlining) and Phase 5 (Code Quality Review)
- Add 15 centralized notification constants to src/constants/notifications.ts

Migration validation: 25/27 components complete (93% success rate)

doc/error-diagnostics-log.md

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+# Error Diagnostics Log
+
+This file tracks console errors observed during development for future investigation.
+
+## 2025-07-07 08:56 UTC - ProjectsView.vue Migration Session
+
+### Migration Context
+- **Current Work**: Completed ProjectsView.vue Triple Migration Pattern
+- **Migration Status**: 21 complete, 4 appropriately incomplete components
+- **Recent Changes**: 
+  - ProjectsView.vue: databaseUtil → PlatformServiceMixin
+  - Added notification constants and literal string extraction
+  - Template logic streamlining with computed properties
+
+### Observed Errors
+
+#### 1. HomeView.vue API Rate Limit Errors
+```
+GET https://api.endorser.ch/api/report/rateLimits 400 (Bad Request)
+Source: endorserServer.ts:1494, HomeView.vue:593, HomeView.vue:742
+```
+
+**Analysis**: 
+- API server returning 400 for rate limit checks
+- Occurs during identity initialization and registration status checks
+- **Migration Impact**: None - HomeView.vue was migrated and tested earlier
+- **Likely Cause**: Server-side authentication or API configuration issue
+
+**Action Items**:
+- [ ] Check endorser.ch API documentation for rate limit endpoint changes
+- [ ] Verify authentication headers being sent correctly
+- [ ] Consider fallback handling for rate limit API failures
+
+#### 2. ProjectViewView.vue Project Not Found Error
+```
+GET https://api.endorser.ch/api/claim/byHandle/...01JY2Q5D90E8P267ABB963S71D 404 (Not Found)
+Source: ProjectViewView.vue:830 loadProject() method
+```
+
+**Analysis**:
+- Attempting to load project ID: `01JY2Q5D90E8P267ABB963S71D`
+- **Migration Impact**: None - error handling working correctly
+- **Likely Cause**: User navigated to non-existent project or stale link
+
+**Action Items**:
+- [ ] Consider adding better user messaging for missing projects
+- [ ] Investigate if project IDs are being generated/stored correctly
+- [ ] Add breadcrumb or "return to projects" option on 404s
+
+#### 3. Axios Request Stack Traces
+Multiple stack traces showing Vue router navigation and component mounting cycles.
+
+**Analysis**:
+- Normal Vue.js lifecycle and routing behavior
+- No obvious memory leaks or infinite loops
+- **Migration Impact**: None - expected framework behavior
+
+### System Health Indicators
+
+#### ✅ Working Correctly
+- Database migrations: `Migration process complete! Summary: 0 applied, 2 skipped`
+- Platform service factory initialization: `Creating singleton instance for platform: development`
+- SQL worker loading: `Worker loaded, ready to receive messages`
+- Database connection: `Opened!`
+
+#### 🔄 For Investigation
+- API authentication/authorization with endorser.ch
+- Project ID validation and error handling
+- Rate limiting strategy
+
+### Migration Validation
+- **ProjectsView.vue**: Appropriately incomplete (3 helpers + 1 complex modal)
+- **Error Handling**: Migrated components showing proper error handling
+- **No Migration-Related Errors**: All errors appear to be infrastructure/data issues
+
+### Next Steps
+1. Continue migration slog with next component
+2. Monitor these same error patterns in future sessions
+3. Address API/server issues in separate debugging session
+
+---
+*Log Entry by: Migration Assistant*  
+*Session: ProjectsView.vue Triple Migration Pattern*