feat(knowledge-flywheel): add Phase 3 Knowledge Flywheel — AI analysis, review queue, analytics

Phase 3 implementation:
- AI session analysis service that generates flow proposals from resolved sessions
- APScheduler job for batch processing pending analyses (max_instances=1)
- Knowledge gap detection (weak options, high escalation signals)
- Flow proposals CRUD with team admin review workflow (approve/edit/dismiss/reject)
- FlowPilot analytics dashboard with confidence tiers, PSA metrics, knowledge gaps
- In-session script generator component
- Review queue page with filtering and proposal detail panel

Bug fixes from review (12 total):
- Fix "Edit & Publish" navigating to non-existent /editor/new route
- Hide Approve button for enhancement proposals (require Edit & Publish)
- Add max_instances=1 to scheduler to prevent TOCTOU race
- Fix eventual_success case() double-counting failed retries
- Add tree_structure validation before creating tree from proposal
- Simplify script generator rendering condition
- Add severity style fallback, toFixed on rates, Link instead of <a href>
- Add toast.warning on dismiss failure, fix dedup for domain-less sessions
- Cast Decimal to int in knowledge gap evidence dicts

Also updates CLAUDE.md with lessons 67-71 and Phase 3 project structure.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.dev.yml

@@ -39,7 +39,7 @@ services:
       - AI_PROVIDER=anthropic
       - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
       - GOOGLE_AI_API_KEY=${GOOGLE_AI_API_KEY}
-      - CORS_ORIGINS=["http://localhost:3000","http://localhost:5173","http://127.0.0.1:3000","http://127.0.0.1:5173"]
+      - CORS_ORIGINS=["http://localhost:3000","http://localhost:5173","http://127.0.0.1:3000","http://127.0.0.1:5173","http://192.168.0.9:5173","http://192.168.0.9:3000"]
     depends_on:
       db:
         condition: service_healthy
@@ -55,7 +55,7 @@ services:
       - ./frontend:/app
       - /app/node_modules
     environment:
-      - VITE_API_URL=http://localhost:8000
+      - VITE_API_URL=http://192.168.0.9:8000
     depends_on:
       - backend