---
session_id: S-2026-0222-0041
timestamp: 2026-02-21T23:41:44Z
predecessor: S-2026-0222-0011
tasks_active: [T-200, T-220, T-227, T-230, T-233, T-237, T-238, T-239, T-240, T-241]
tasks_touched: [T-238, T-200, T-230, T-237, T-239, T-233, T-227, T-240, T-241, T-234, T-232, T-235, T-236, T-229, T-231, T-228]
tasks_completed: []
uncommitted_changes: 9
owner: claude-code
session_narrative: ""
---

# Session Handover: S-2026-0222-0041

## Where We Are

Completed T-200 inception (discovery layer design). GO decision recorded — 12 discovery capabilities cataloged and scored against real data, 10 temporal infrastructure gaps identified. Created 4 build tasks (T-238 through T-241) with rich context linking back to research. Predecessor handover S-2026-0222-0011 was stale (pre-compact skeleton) — filled it. Five tasks still await human AC review at :3000.

## Work in Progress

<!-- horizon: now -->

### T-200: "Discovery layer design — pattern detection, omission finding, insight surfacing (T-194 Phase 4)"
- **Status:** started-work (horizon: now) — GO decision recorded, build tasks created
- **Last action:** Phase 1a complete: 12 discoveries cataloged, 2 sub-agent investigations, GO decision, 4 build tasks created (T-238-T-241)
- **Next step:** Human to finalize (owner: human, sovereignty gate blocks agent completion)
- **Blockers:** Sovereignty gate — human must run `fw task update T-200 --status work-completed --force`
- **Insight:** 58% episodic TODO rate (D1) is highest-signal discovery. Zero temporal intelligence despite 234 cron audits.

### T-220: "Fabric component detail — inline source code viewer"
- **Status:** started-work (horizon: now)
- **Last action:** All agent ACs complete; verification passes (previous session)
- **Next step:** Human review: dark theme contrast, collapsible section UX at :3000
- **Blockers:** Waiting on human ACs
- **Insight:** None

### T-227: "Fix fabric page — subsystem cards link to themselves, dropdown filters broken"
- **Status:** work-completed (horizon: now)
- **Last action:** Agent ACs passing (previous session)
- **Next step:** Human review of filtered view quality
- **Blockers:** Waiting on human ACs
- **Insight:** None

### T-230: "Fix MEDIUM severity enforcement bypasses — B-009, B-012, integrity checks"
- **Status:** work-completed (horizon: now)
- **Last action:** Agent ACs passing (previous session)
- **Next step:** Human review pending
- **Blockers:** Waiting on human ACs
- **Insight:** None

### T-233: "Improve fabric graph layout"
- **Status:** work-completed (horizon: now)
- **Last action:** 3 layout modes implemented (dagre TB, dagre LR, cose with parent detach)
- **Next step:** Human review of label readability at :3000/fabric/graph
- **Blockers:** Waiting on human ACs
- **Insight:** Cytoscape cose broken with compound nodes at scale; dagre works well

### T-237: "Add search infrastructure — tantivy BM25 for Watchtower, plan embedding layer"
- **Status:** work-completed (partial — human ACs pending)
- **Last action:** Agent ACs all pass; tantivy indexing 832 docs, BM25 ranked results with snippets
- **Next step:** Human review of search result quality at :3000/search
- **Blockers:** Waiting on human ACs
- **Insight:** en_stem tokenizer handles stemming; auto-rebuild on 60s staleness keeps index fresh

<!-- horizon: later -->

### T-238: "Build time-series storage for audit metrics"
- **Status:** captured (horizon: later)
- **Last action:** Task created with rich context — foundation for all temporal discoveries
- **Next step:** Implement metrics-history.yaml schema + audit.sh auto-append
- **Blockers:** None — prerequisite for T-239, T-240
- **Insight:** Single YAML append-only file with 30-day retention; ~10 numeric fields per entry

### T-239: "Implement discovery jobs — episodic decay, review queue, handover quality"
- **Status:** captured (horizon: later)
- **Last action:** Task created with D1/D2/D8 specifications from T-200 research
- **Next step:** Implement after T-238 (optional — can work point-in-time without it)
- **Blockers:** T-238 for trend comparison (optional)
- **Insight:** D1 (episodic decay) can validate immediately — 58% known bad rate

### T-240: "Implement discovery jobs — audit trends, velocity trends, lifecycle anomalies"
- **Status:** captured (horizon: later)
- **Last action:** Task created with D4/D5/D3/D7 specifications from T-200 research
- **Next step:** Implement after T-238 (required — needs time-series data)
- **Blockers:** T-238 (time-series storage) must complete first
- **Insight:** D5 can validate against T-151 (2-min lifecycle anomaly)

### T-241: "Wire discovery findings into session-start and Watchtower"
- **Status:** captured (horizon: later)
- **Last action:** Task created with 3-channel surfacing model from T-200 research
- **Next step:** Implement after T-239, T-240 (needs discoveries to surface)
- **Blockers:** T-239 and T-240 must produce findings first
- **Insight:** GAP-T7 (session blind to trends) is highest-impact surfacing gap

## Inception Phases

T-200 GO decision recorded. Build tasks T-238-T-241 created. Human needs to finalize T-200 completion.

## 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. **GO on T-200 discovery layer design**
   - Why: 12 discoveries cataloged, top 5 score 20-25, real data validates immediate value (58% episodic decay invisible for weeks), 10 temporal gaps identified
   - Alternatives rejected: Continue exploring (sufficient evidence), NO-GO (no criteria triggered)

2. **4 build tasks instead of monolithic implementation**
   - Why: Clear dependency chain (T-238 foundation -> T-239/T-240 discoveries -> T-241 surfacing). Each fits in one session. Omission discoveries (T-239) can work without time-series; trend discoveries (T-240) cannot.
   - Alternatives rejected: Single task (too large), 12 tasks per discovery (too granular)

## Things Tried That Failed

1. **TaskOutput with block:true on sub-agents** — Returned full JSONL (288K + 352K chars), not agent summaries. T-073 lesson violated. Context spiked to 64% but recovered. Must use `tail -20` on output files instead.

2. **`fw task create --description "..."` with special characters** — Silently fails when description contains percent signs. Use `create-task.sh` with simple descriptions.

## Open Questions / Blockers

1. T-200 needs human to finalize (sovereignty gate blocks agent completion)
2. OE daily/weekly tiers designed in T-194 Phase 3 but not scheduled in cron — separate from discovery layer

## Gotchas / Warnings for Next Session

- Flask template caching: must restart server after editing templates
- Tantivy index in `/tmp/fw-search-index/` — lost on reboot, auto-rebuilt on first search
- T-200 inception: GO recorded but task still started-work (human-owned, sovereignty gate)
- Sub-agent dispatch: ALWAYS use `tail -20` on output file, NEVER TaskOutput with block:true
- `create-task.sh` needs `--owner agent` explicitly or it prompts interactively

## Suggested First Action

Review human ACs on T-220/T-227/T-230/T-233/T-237 at :3000. Then promote T-238 to `horizon: now` and build time-series storage (foundation for all discoveries).

## Files Changed This Session

- Created: `docs/reports/T-200-discovery-layer-design.md` (research artifact)
- Created: `.tasks/active/T-238-build-time-series-storage.md`
- Created: `.tasks/active/T-239-implement-discovery-jobs--episodic-decay.md`
- Created: `.tasks/active/T-240-implement-discovery-jobs--audit-trends-v.md`
- Created: `.tasks/active/T-241-wire-discovery-findings-into-session-sta.md`
- Modified: `.tasks/active/T-200-discovery-layer-design--pattern-detectio.md` (filled template, GO decision)
- Modified: `.context/handovers/S-2026-0222-0011.md` (filled stale pre-compact skeleton)
- Modified: `.context/handovers/LATEST.md` (synced)

## Recent Commits

- 4bdd5ff T-200: Create 4 build tasks with rich context from discovery research
- 8cf7289 T-200: GO decision — 12 discoveries cataloged, temporal gap analysis complete
- 9e70fdb T-200: Fill inception template and create research artifact
- e6cfccc T-012: Fill stale handover S-2026-0222-0011 with context from predecessor
- 06f2998 T-012: Session handover S-2026-0222-0011

---

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

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