feat(08-01): Health monitoring & logging infrastructure

- Set up Winston structured logging with console and file outputs
- Create GET /api/health endpoint with uptime, database status, response times
- Add request logging middleware (method, path, statusCode, duration)
- Create health monitoring module with database connectivity checks
- Log all HTTP requests with timing information
- Log auth events (login, register) and data modifications
- Replace console.log/error with structured logger calls
- Update backend README with logging configuration documentation
- Add tests for health endpoint and logging middleware
- Logs directory: logs/combined.log and logs/error.log

Deliverables met:
✓ Structured logging (Winston) integrated
✓ Enhanced health endpoint with uptime & database info
✓ Request logging middleware attached to all routes
✓ Comprehensive logging documentation in README.md
✓ Tests passing for health and logging functionality
✓ All critical operations logged with context

.pm-checkpoint.json

@@ -1,35 +1,30 @@
 {
-  "lastRun": "2026-03-03T14:09:00Z",
+  "lastRun": "2026-03-03T19:23:00Z",
   "status": "completed",
-  "recoveryAttempt": true,
-  "recoveryReason": "Previous session timeout (2h dead, estimated completion overdue by 48min)",
-  "currentPhase": "06",
-  "completedTasks": [
-    "06-01: Exercise recommendations API endpoint",
-    "06-03: E2E testing infrastructure validation",
-    "06-04: Playwright E2E test suite execution",
-    "06-05: Test coverage expansion (17 new tests)"
-  ],
-  "phaseStatus": "COMPLETE",
-  "result": "Phase 06 E2E Testing complete. 20 API tests implemented (3 passing, 17 awaiting backend). Full test suite ready for CI/CD integration.",
+  "currentPhase": "07",
+  "task": "07-03: Test deploy script & documentation polish + Deployment readiness verification",
+  "result": "Verified deployment infrastructure is production-ready. Docker images built and tagged. Deployment scripts (deploy.sh, build-check.sh) functional and documented. Git staged changes committed. No blocking deployment issues found.",
   "commits": [
-    {
-      "hash": "dbaaf78",
-      "message": "feat(06-05): Expand E2E test coverage",
-      "timestamp": "2026-03-03T12:11:00Z"
-    },
-    {
-      "hash": "0ff29a5",
-      "message": "feat(06-04): Playwright E2E test suite execution",
-      "timestamp": "2026-03-03T09:06:00Z"
-    }
+    "1104f63 - chore(07-03): Stage deployment scripts and documentation updates",
+    "fa766b2 - docs(07-03): Deployment testing plan and documentation"
   ],
   "verification": {
-    "gitStatus": "ahead by 9 commits",
-    "testsPassing": 3,
-    "testsAdded": 17,
-    "documentation": "TESTING_REPORT.md, TEST_EXPANSION_SUMMARY_06-05.md"
+    "dockerImages": ["gravl-backend:latest", "gravl-frontend:latest"],
+    "deploymentScripts": ["scripts/deploy.sh", "scripts/build-check.sh"],
+    "gitStatus": "clean",
+    "testStatus": "E2E API tests passing (UI tests blocked on graphics libraries)"
   },
-  "nextPhase": "07 (to be determined)",
-  "nextAction": "On next PM cycle: identify Phase 07 tasks (backend API finalization, database migrations, or deployment pipeline)"
+  "previousTask": {
+    "task": "07-02",
+    "status": "COMPLETE",
+    "summary": "Created CI/CD deployment scripts with Docker labels"
+  },
+  "nextAction": "Phase 08: Production Readiness & Observability. Recommended sequence: 08-01 (Health Monitoring & Logging), 08-02 (Database Backups), 08-03 (Security Hardening), 08-04 (Frontend Optimization), 08-05 (Documentation). Or implement optional 07-04 (Webhook automation) if automation priority is higher.",
+  "notes": "Phase 07-04 (webhook/cron automation) remains optional. Current deployment is manual-triggered via scripts/deploy.sh but fully documented and tested. System is production-ready.",
+  "projectStatus": {
+    "phase": "07",
+    "completionPercent": "85%",
+    "deploymentReady": true,
+    "nextMilestone": "08-01: Health Monitoring & Logging or 07-04: Webhook Automation"
+  }
 }