fix: backfill symbol_demand for sidebar-added symbols + analyst ratings schema fix

- Add await ctx.cache.subscribe() to addSymbol mutation so symbols
  added via the sidebar get registered in symbol_demand and yfinance
  jobs are queued immediately
- Backfill PEP, WYNN, STZ, CELH into symbol_demand + adapter_queue
- Upgrade yahoo-finance2 3.15.3 -> 3.15.4 and pass validateResult:false
  to quoteSummary() to handle Yahoo schema drift
- Add error detail logging for analyst ratings schema failures
- Update .gitignore with common ignores

REVIEW.md

@@ -0,0 +1,39 @@
+# Code Review — risk-engine-and-risk-posture-m20-halt (Slice 18: Pure Core)
+
+**Reviewer:** qwopus35b | **Implementer:** ornith-35 | **Date:** 2026-07-01  
+**Phase:** code_review  
+
+## VERDICT: REQUEST CHANGES
+
+### Defect
+
+**ADR-0007 footer not appended to recommendations (HIGH)**
+
+The `ADR_0007_FOOTER` constant is defined in `RiskEngine.ts` but never used. The spec requires "Every recommended action has a 'trade-off to think through' frame + ADR-0007 footer." Recommendations include the "trade-off to think through" frame but lack the footer text:
+
+> "Educational analysis, not investment advice. Verify the underlying data; you are responsible for your own decisions."
+
+The test named `includes ADR-0007 footer in all recommendations` is misleading — it only checks field existence (`tradeOff`, `explanation`, `severity`), not actual footer content.
+
+**Fix:** Append `ADR_0007_FOOTER` to each recommendation's `explanation` field in `generateRecommendations()`. Update the test to verify footer text presence.
+
+### Verified ✓
+
+- RiskEngine pure (no I/O) — zero network calls
+- Asymmetry < 1 → `consider_reducing_position` warning
+- Cluster breach: beginner = hard cap (`warning`), intermediate = warn (`info`)
+- Actions REWORDED — no imperative trade verbs (`buy/sell/cut/trim`)
+- "trade-off to think through" frame present on all four recommendation paths
+- haltCircuitBreaker: 24h cooldown, isHalted true within 24h / false after
+- Existing positions unaffected by halt
+- HaltedError clearable via `clearHalt()`
+- HaltedError is a regular class (NOT TS parameter property) — works with `--experimental-strip-types`
+- `halt_state` table in schema.sql: `user_id`, `halted_until`, `triggered_by`, `ts`
+- Pure/cache-deterministic — NO network in tests
+- 35/35 tests pass under `node --test --experimental-strip-types`
+- Zero TS errors in risk module (pre-existing errors only in adapters)
+
+### Deferred Items (Acceptable for Pure Core Review)
+
+- tRPC `risk.posture` + `risk.haltStatus` endpoints
+- Server-side `HaltedError` gate wiring into `journal.trade.create`