docs: Verify and document infrastructure features as complete
**Infrastructure Verification (All Complete!)**
All three high-priority infrastructure features are fully implemented:
**1. Structured Logging - Winston with JSON ✅**
- Full Winston logger with nest-winston integration
- JSON format for all file transports (error, combined, audit, exceptions, rejections)
- Log rotation: 5MB files, 5-30 file retention
- Environment-specific config (console in dev, files in production)
- Timestamp and duration tracking
- Files: src/common/logger/winston.config.ts (146 lines)
**2. PII Sanitization ✅**
- Custom Winston PII sanitizer format
- Redaction patterns: Email, Phone, SSN, Credit Card, IPv4
- Sanitizes to: [EMAIL_REDACTED], [PHONE_REDACTED], etc.
- Applied to all transports except audit logs (compliance requirement)
- Sanitizes messages and context metadata
- Files: src/common/logger/winston.config.ts (lines 6-43)
**3. CI/CD Pipeline ✅**
Two comprehensive GitHub Actions workflows:
- Frontend CI (.github/workflows/ci.yml - 116 lines):
* Lint, test with Jest, E2E with Playwright
* Build validation, coverage upload
* Artifact retention (30d reports, 7d builds)
- Backend CI (.github/workflows/backend-ci.yml - 323 lines):
* Lint, test with 70% coverage threshold
* Service containers: PostgreSQL 15, Redis 7, MongoDB 7
* E2E tests with migrations
* Performance testing with Artillery (on PRs)
* Coverage reporting and artifact retention
**Additional Verifications**
- Error Boundaries: Already fully implemented (192-line component)
- Touch Target Sizes: Verified WCAG 2.5.5 compliance + created utilities
- Conversation History: Already fully implemented with advanced features
- Performance Testing: Integrated into backend CI pipeline
**Updated Statistics**
- Total Features: 128
- Completed: 49 → 60 (+11) = 47%
- Remaining: 79 → 68 = 53%
* High Priority: 18 → 8 features
* Medium Priority: 21 → 20 features
* Low Priority: 40 features (unchanged, mostly post-MVP)
**Category Breakdown**
- Backend: 22 completed (unchanged)
- Frontend: 18 → 22 completed (+4: Error boundaries, Touch targets, Conversation history)
- Infrastructure: 3 → 11 completed (+8: Logging, PII sanitization, CI/CD, Performance testing)
- Testing: 3 → 5 completed (+2: CI/CD pipeline automation)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Andrei
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