Merge S8 (a1): ops — the product watches itself

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

# Conflicts:
#	BUILD-STATE.md
#	CLAUDE.md
#	src/snapshotScheduler.js

CLAUDE.md

@@ -854,6 +854,31 @@ phased plan in the Session-57 conversation / BUILD-STATE Next section).
   surface is `/welcome`. Landing capture sits below FAQ. Subscribe route is
   10/min IP-limited → keep `tests/integration/newsletterRoute.test.js` under 10
   subscribe requests (same lesson as analyze.test.js).
+## Ops Self-Watch (Session 8, A1 board — non-obvious)
+- **Pure alarm logic lives in `src/services/opsWatch.js`** (failure tracker,
+  zero-settle signal, quota daily check, pulse assembly) + `src/services/
+  systemHealth.js` (statfs/os, injectable). `snapshotScheduler` only WIRES
+  them — keep new alarm logic in opsWatch so it stays unit-testable.
+- **Zero-settle signal = the ledger settle's own return values** (Postgres
+  `game_date < today AND outcome IS NULL`), NOT `snapshot:{sport}:previous` —
+  the snapshot key expires in exactly the failure mode the alarm exists to
+  catch (the S60 SNAP_TTL bug). Scoped to `SETTLEABLE_SPORTS` (mlb);
+  NBA/WNBA rows legitimately stay pending and must not page daily. Morning
+  slot only (`morningHourUtc` = first configured hour ≥ 06 UTC).
+- **Failure pager pages ONCE per losing streak** (exactly at count 3), not
+  once per failing slot; `status:'skipped', reason:'no grades'` is NOT a
+  failure (props arrived, grader refused) and resets the counter.
+- **Daily pulse** fires at `PULSE_HOUR_UTC` (default 13 = 9 AM EDT), one
+  notification, dual dedupe (in-process date + Redis `ops:pulse:{date}`).
+  Missing data renders 'n/a' — a pulse never fabricates a zero (Data
+  Semantics Rule applies to ops copy). All alert copy: no exclamation
+  points, ever (VOICE v1.1) — tests lint for it.
+- **Single-suite jest runs of scheduler tests can hang at exit** when redis
+  is down (ioredis reconnect timer keeps the process alive) — PRE-EXISTING
+  at baseline, full-suite runs are unaffected. Don't chase it as a leak in
+  new code; inject cacheGet/cacheSet in tests to avoid creating a client.
+- Box-side ops (Uptime Kuma, Coolify deploy-failure webhook, ntfy phone
+  setup) = `docs/OPS-RUNBOOK.md`.
 
 ## Active Skills
 - vyndr-voice (all user-facing output)