Session 56: Full audit — PropLine + boxscore + pipeline + sport coverage (2289 tests)

Research (verified against live MLB Stats / ESPN / The Odds APIs):
- specs/propline-audit.md — every stat_type mapped against our 4-layer pipeline;
  real MLB boxscore fields; sport coverage status; pipeline gap analysis.
- specs/vyndr-roadmap.md — priority-ordered Sessions 57–64 + coverage targets.
- scripts/propline-audit.js + specs/audit-data/ (raw capture).

Headline bug: oddsNormalizer mapped batter_rbis → 'rbis' while the whole
grade/feature/outcome chain keys on 'rbi' — every PropLine RBI prop silently
failed to grade AND settle. Fixed (+ regression test).

Phase 4 — wired missing MLB stats end-to-end:
- PropLine MLB markets 6 → 12 (+runs, walks, doubles, earned_runs, hits_allowed,
  outs — same request, no extra quota).
- doubles/outs/triples added to featureCache + outcomeService MLB_LOG_FIELD and
  all three grade whitelists (analyze/scan/validation.py).

Phase 6 — pipeline resilience:
- opsNotify.js: ntfy alerts (never throws, test-disabled). Snapshot success/
  stale/failure alerts; retry-once on hard odds error (not on empty slate).
- Missed-cron watchdog (mostRecentExpectedSlot/isSnapshotOverdue); status probe
  now returns `overdue`.

Coverage truth: MLB is the only end-to-end-live sport; outcome settlement is
MLB-only (WNBA/NBA/soccer never settle) — documented as the #1 roadmap gap.

Backend 2276 → 2289 tests (+13). Web build exit 0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/unit/oddsNormalizer.test.js

@@ -121,6 +121,14 @@ describe('oddsNormalizer', () => {
       }
     });
 
+    it('Session 56 audit — batter_rbis normalizes to rbi (singular), matching the grade chain', () => {
+      // The whole grade/feature/outcome chain keys on 'rbi'. If this reverts to
+      // 'rbis', PropLine RBI props silently stop grading + settling again.
+      expect(MARKET_MAP.batter_rbis).toBe('rbi');
+      expect(MARKET_MAP.batter_doubles).toBe('doubles');
+      expect(MARKET_MAP.pitcher_outs).toBe('outs');
+    });
+
     it('exposes the NFL market keys added in the Session 31 audit', () => {
       // Defensive mapping landed before NFL is fully wired so it can't
       // repeat the MLB silent-zero bug. Both odds-api `_yds` and the