---
session_id: S-2026-0223-2230
timestamp: 2026-02-23T21:30:05Z
predecessor: S-2026-0223-2204
tasks_active: []
tasks_touched: [T-257, T-258, T-253, T-255, T-256, T-048, T-254, T-245, T-259]
tasks_completed: []
uncommitted_changes: 17
owner: claude-code
session_narrative: ""
---

# Session Handover: S-2026-0223-2230

## Where We Are

LLM Q&A feature fully shipped. All 5 build tasks from T-254 inception (T-255..T-259) completed and human-verified. Zero active tasks. The "Ask a Question" section on /search streams answers from qwen2.5-coder-32b via ollama with inline citations and clickable source links. Watchtower running on :3000.

## Work in Progress

No active tasks. Clean slate.

## Gaps Register

**2 spec-reality gap(s) being watched** — see `.context/project/gaps.yaml`

- **G-004** [low]: Multi-agent collaboration untested
- **G-011** [low]: PostToolUse hooks are advisory-only — cannot block actions

Run `fw audit` to check if any trigger conditions are met.

## Decisions Made This Session

1. **Vanilla JS EventSource over htmx SSE extension for Ask UI**
   - Why: Need token-by-token append + source panel rendering + error handling. htmx SSE replaces content rather than appending.
   - Alternatives rejected: htmx `hx-ext="sse"` — too coarse for streaming

2. **Single `web/ask.py` for T-256 + T-258**
   - Why: Model management and streaming tightly coupled, ~130 lines total
   - Alternatives rejected: Separate model_manager.py — over-engineering

## Things Tried That Failed

None — clean execution across all 5 tasks.

## Open Questions / Blockers

None. Consider Phase 2 features from T-254 scope fence: multi-turn chat, answer caching, user feedback, reranking.

## Gotchas / Warnings for Next Session

- qwen2.5-coder-32b cold start ~20s on first query, then ~5s TTFT
- Flask template caching — `bin/watchtower.sh restart` after template edits
- 257 completed tasks, 0 active — clean slate for next feature

## Suggested First Action

No active tasks. Ask the user what to build next. Consider Phase 2 Q&A features or other improvements.

## Files Changed This Session

- Created: `web/ask.py` (LLM Q&A module), `web/static/htmx-ext-sse.js` (SSE extension)
- Modified: `web/embeddings.py` (rag_retrieve), `web/blueprints/discovery.py` (/search/ask), `web/templates/search.html` (Ask section), `web/templates/base.html` (SSE script tag)

## Recent Commits

- 32a24c5 T-256, T-257: Human ACs verified — close both tasks
- 94bc4e1 T-012: Fill handover S-2026-0223-2204 TODOs
- a16ae3e T-012: Session handover S-2026-0223-2204
- 265c8e3 T-257: Add Ask Q&A frontend with SSE streaming + source citations
- edd620c T-256: Add /search/ask SSE endpoint + T-258: Model management with fallback

---

## Handover Quality Feedback (for next session to complete)

- Did this handover help? [ ]
- What was missing?
- What was unnecessary?
