feat: Add Phase 11 analytics and production readiness features

- Introduced new endpoints for account overview, analytics, and metrics.
- Implemented authorization matrix and backup/restore documentation.
- Added smoke test script and updated package dependencies.
- Created detailed production checklist and runbook for deployment.
- Established cron operations and notification event matrix documentation.
- Enhanced security and validation audits for analytics and metrics services.
- Added unit tests for analytics and metrics functionalities.

Documentation/openapi.json

@@ -0,0 +1 @@
+{"openapi":"3.1.0","info":{"title":"ZUMRI Backend API","version":"1.0.0","description":"Phase 11 maintained baseline. Module 16 AI support is intentionally excluded."},"servers":[{"url":"/api/v1"}],"components":{"securitySchemes":{"bearerAuth":{"type":"http","scheme":"bearer","bearerFormat":"JWT"},"cookieAuth":{"type":"apiKey","in":"cookie","name":"access_token"}},"schemas":{"Error":{"type":"object","required":["success","error"],"properties":{"success":{"const":false},"error":{"type":"object","properties":{"code":{"type":"string"},"message":{"type":"string"},"requestId":{"type":"string"}}}}}}},"paths":{"/products":{"get":{"summary":"List public products","responses":{"200":{"description":"Product list"}}}},"/help/categories":{"get":{"summary":"List published help categories","responses":{"200":{"description":"Help categories"}}}},"/auth/me":{"get":{"security":[{"bearerAuth":[]},{"cookieAuth":[]}],"responses":{"200":{"description":"Current identity"},"401":{"description":"Unauthenticated"}}}},"/account/overview":{"get":{"security":[{"bearerAuth":[]},{"cookieAuth":[]}],"responses":{"200":{"description":"Self-owned account overview"}}}},"/support/tickets":{"get":{"security":[{"bearerAuth":[]},{"cookieAuth":[]}],"responses":{"200":{"description":"Self-owned tickets"}}},"post":{"security":[{"bearerAuth":[]},{"cookieAuth":[]}],"responses":{"201":{"description":"Ticket created"}}}},"/admin/dashboard/overview":{"get":{"security":[{"bearerAuth":[]},{"cookieAuth":[]}],"responses":{"200":{"description":"Requires analytics.dashboard.read"},"403":{"description":"Permission denied"}}}},"/admin/analytics/sales":{"get":{"security":[{"bearerAuth":[]},{"cookieAuth":[]}],"parameters":[{"name":"from","in":"query","schema":{"type":"string","format":"date"}},{"name":"to","in":"query","schema":{"type":"string","format":"date"}}],"responses":{"200":{"description":"Requires analytics.sales.read"}}}},"/recommendations/trending":{"get":{"responses":{"200":{"description":"Deterministic trending products"}}}},"/admin/metrics":{"get":{"security":[{"bearerAuth":[]},{"cookieAuth":[]}],"responses":{"200":{"description":"Prometheus text; requires system.metrics.read"}}}}}}