smart-support/docs/phases/phase-5-dev-log.md

Phase 5: Polish + Demo Prep -- Development Log

Status: COMPLETED Phase branch: phase-5/polish-demo Date started: 2026-03-30 Date completed: 2026-03-30 Related plan section: Phase 5 in DEVELOPMENT-PLAN

What Was Built

Backend

• app/conversation_tracker.py -- Protocol + PostgresConversationTracker + NoOpConversationTracker for conversation lifecycle tracking (ensure, record_turn, resolve)
• app/tools/__init__.py + app/tools/error_handler.py -- ErrorCategory enum, classify_error(), with_retry() with exponential backoff for RETRYABLE errors only
• app/ws_handler.py -- Added analytics_recorder, conversation_tracker, pool params to dispatch_message; _fire_and_forget_tracking helper; rate limiting (10 msg/10s per thread); whitespace-only message check; JSON array rejection; version bump to 0.5.0
• app/main.py -- Wired PostgresAnalyticsRecorder and PostgresConversationTracker into lifespan; added GET /api/health; version 0.5.0
• backend/fixtures/demo_data.py -- Async seed script for sample conversations and analytics events
• backend/fixtures/sample_openapi.yaml -- E-commerce OpenAPI 3.0 spec for demo

Frontend

• src/api.ts -- Typed fetch wrappers: fetchConversations, fetchReplay, fetchAnalytics
• src/components/NavBar.tsx -- Horizontal nav with NavLink routing
• src/components/Layout.tsx -- App shell with NavBar + Outlet
• src/components/ErrorBanner.tsx -- Disconnection status banner with reconnect button
• src/components/MetricCard.tsx -- Reusable metric display card
• src/components/ReplayTimeline.tsx -- Vertical step list with expandable params/result
• src/pages/ReplayListPage.tsx -- Paginated conversation list
• src/pages/ReplayPage.tsx -- Per-thread replay with ReplayTimeline
• src/pages/DashboardPage.tsx -- Analytics dashboard with range selector, zero-state handling
• src/pages/ReviewPage.tsx -- OpenAPI import form, job polling, editable classifications table
• src/App.tsx -- BrowserRouter with Layout + all 5 routes
• src/hooks/useWebSocket.ts -- Added reconnect(), onDisconnect/onReconnect callbacks
• src/pages/ChatPage.tsx -- ErrorBanner integration
• vite.config.ts -- Added /api proxy

Infrastructure

• frontend/Dockerfile -- Multi-stage build (node:20-alpine -> nginx:alpine)
• frontend/nginx.conf -- SPA routing with WebSocket and API proxying to backend
• docker-compose.yml -- Added frontend service with health-gated depends_on; backend healthcheck; app_network
• .env.example (root) -- Docker Compose environment template
• backend/.env.example -- Backend environment template with all variables documented

Documentation

• docs/demo-script.md -- Step-by-step 10-minute demo walkthrough
• docs/agent-config-guide.md -- agents.yaml reference, permissions, escalation
• docs/openapi-import-guide.md -- Import workflow, REST API, SSRF protection, limitations
• docs/deployment.md -- Docker Compose setup, production considerations, backup, scaling
• README.md -- Complete project overview with quick start, architecture, API table

Code Structure

New files:

• backend/app/conversation_tracker.py -- Protocol + implementations
• backend/app/tools/__init__.py -- Package init
• backend/app/tools/error_handler.py -- Error classification + retry
• backend/fixtures/demo_data.py -- Seed script
• backend/fixtures/sample_openapi.yaml -- Demo spec
• backend/tests/unit/test_conversation_tracker.py -- 13 tests
• backend/tests/unit/test_error_handler.py -- 19 tests
• backend/tests/unit/test_edge_cases.py -- 10 tests
• frontend/Dockerfile
• frontend/nginx.conf
• frontend/src/api.ts
• frontend/src/components/NavBar.tsx
• frontend/src/components/Layout.tsx
• frontend/src/components/ErrorBanner.tsx
• frontend/src/components/MetricCard.tsx
• frontend/src/components/ReplayTimeline.tsx
• frontend/src/pages/ReplayListPage.tsx
• frontend/src/pages/ReplayPage.tsx
• frontend/src/pages/DashboardPage.tsx
• frontend/src/pages/ReviewPage.tsx
• docs/demo-script.md
• docs/agent-config-guide.md
• docs/openapi-import-guide.md
• docs/deployment.md

Modified files:

• backend/app/main.py -- Wired tracker/recorder, health endpoint, version bump
• backend/app/ws_handler.py -- Rate limiting, tracker/recorder params, edge case hardening
• backend/tests/conftest.py -- autouse fixture to clear rate limit state
• backend/tests/unit/test_main.py -- Updated version, added health route tests
• backend/tests/unit/test_ws_handler.py -- Tracker/recorder integration tests, content limit update
• backend/tests/integration/test_websocket.py -- Content limit update
• frontend/src/App.tsx -- BrowserRouter + routing
• frontend/src/hooks/useWebSocket.ts -- reconnect, callbacks
• frontend/src/pages/ChatPage.tsx -- ErrorBanner
• frontend/vite.config.ts -- /api proxy
• docker-compose.yml -- frontend service, healthcheck, networking
• README.md -- Complete rewrite in English
• backend/.env.example -- Added all new variables

Test Coverage

• Unit tests added: 42 (13 conversation_tracker + 19 error_handler + 10 edge_cases)
• Integration tests updated: 1
• Unit tests updated: 4 (version + content limit alignment)
• Total tests: 449 passing
• Overall coverage: 92.88%

Deviations from Plan

• MAX_CONTENT_LENGTH changed from 8000 to 10000 to match plan spec (>10000 = too long). Updated all tests that referenced the old 8000/9000 boundary.
• _thread_timestamps is module-level; added autouse pytest fixture to clear it between tests to prevent state leakage.
• FireAndForget tracking uses direct await (not background tasks) since the WebSocket loop is already async and fire-and-forget with proper exception suppression is sufficient.

Known Issues / Tech Debt

• app/main.py coverage is 48% -- the lifespan/startup path is not covered by unit tests (requires a real DB). This is expected and the overall 93% coverage more than meets the 80% threshold.
• Rate limit state (_thread_timestamps) is process-global and will not work correctly with multiple workers. For multi-worker deployments, use Redis-backed rate limiting.
• The conversations table schema is assumed to exist; setup_app_tables should be extended to create it if not present (deferred to a future patch).