spec: add proposals for debug logging cleanup and i18n completion

Two new proposals from comprehensive QA review:

1. cleanup-debug-logging
   - Remove 60+ console.log/error statements from frontend
   - Create environment-aware logging utility
   - Prevent sensitive data exposure in browser console

2. complete-i18n-coverage
   - Add missing translations to WeeklyReportPreview
   - Add missing translations to ReportHistory
   - Add missing translations to AuditPage modal
   - Use dynamic locale for date formatting

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

openspec/changes/cleanup-debug-logging/proposal.md

@@ -0,0 +1,30 @@
+# Cleanup Debug Logging
+
+## Problem Statement
+
+The frontend codebase contains 60+ console.log and console.error statements scattered across components. These debug statements:
+
+1. May expose sensitive information (tokens, user data, API responses) in browser console
+2. Clutter the browser console in production
+3. Impact performance from excessive logging
+4. Present an unprofessional appearance to users who open developer tools
+
+## Proposed Solution
+
+1. Remove all unnecessary console.log/console.error statements
+2. For essential logging, implement environment-aware logging that only outputs in development
+3. Create a centralized logging utility that respects environment settings
+
+## Affected Components
+
+Key files with debug logging:
+- `contexts/NotificationContext.tsx` - WebSocket event logging
+- `contexts/ProjectSyncContext.tsx` - Debug logging functions
+- `components/GanttChart.tsx` - Progress change logging
+- Multiple other components with error logging
+
+## Success Criteria
+
+- No console.log statements in production build output
+- Essential error logging preserved with environment checks
+- All frontend tests continue to pass

openspec/changes/cleanup-debug-logging/tasks.md

@@ -0,0 +1,28 @@
+## 1. Create Logging Utility
+- [ ] 1.1 Create `utils/logger.ts` with environment-aware logging
+- [ ] 1.2 Export debug, info, warn, error functions
+- [ ] 1.3 Only output logs when `import.meta.env.DEV` is true
+
+## 2. Cleanup Context Files
+- [ ] 2.1 Remove/replace console statements in NotificationContext.tsx
+- [ ] 2.2 Remove/replace console statements in ProjectSyncContext.tsx
+- [ ] 2.3 Remove/replace console statements in AuthContext.tsx
+
+## 3. Cleanup Component Files
+- [ ] 3.1 Remove/replace console statements in GanttChart.tsx
+- [ ] 3.2 Remove/replace console statements in CalendarView.tsx
+- [ ] 3.3 Audit and clean remaining components
+
+## 4. Cleanup Page Files
+- [ ] 4.1 Remove/replace console statements in Tasks.tsx
+- [ ] 4.2 Remove/replace console statements in other page files
+- [ ] 4.3 Audit and clean remaining pages
+
+## 5. Cleanup Service Files
+- [ ] 5.1 Remove/replace console statements in api.ts
+- [ ] 5.2 Audit and clean remaining services
+
+## 6. Verification
+- [ ] 6.1 Run frontend build successfully
+- [ ] 6.2 Verify no console.log in production build
+- [ ] 6.3 Test error handling still works correctly