Session 46: Grade card intel + name normalization + pitchers (2122 tests)

Three focused P1 fixes on the Session-45 snapshot model.

- Grade card intel ROOT CAUSE: gameLogService is NBA/WNBA-only (offline Python),
  so MLB props never got l5_avg/l20_avg and buildIntelFields returned {}. Wired
  MLB game logs into featureCache.gameLogFeatures via mlbStatsAdapter.getPlayerStats
  (pure mlbGameLogFeatures + MLB stat_type->field map). buildIntelFields gained
  playerStats/projection fallbacks for partial intel.
- Player name normalization: src/utils/playerName.js (+ web/src/lib copy):
  normalizeName -> {display,key}. Strips periods, de-dots suffix, accent-folds
  the key. Applied in snapshotService grouping, slateAdapter grade index +
  player-strip merge (variants collapse, longest name shown), and
  playerIntelService. "A.J. Ewing"/"AJ Ewing" + "Jazz Chisholm"/"Jr." now merge.
- MLB starting pitchers: new GET /api/schedule/:sport/pitchers (probablePitchers
  service wrapping mlbStatsAdapter.getScheduleWithPitchers + best-effort ERA).
  Slate fetches it, builds a team->pitcher map (full name + mascot match),
  attaches pitchers to MLB GameCardData. + Next proxy.

Backend 2100 -> 2122 tests (+22), 176 suites. Web build clean (exit 0).

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

src/services/snapshotService.js

@@ -25,7 +25,10 @@ const DELTA_NOISE = 0.5;        // ignore movements smaller than this
 const DELTA_MOVE = 1.0;         // ticker MOVE threshold
 const STATS_CONCURRENCY = 5;
 
-const norm = (s) => String(s == null ? '' : s).toLowerCase().replace(/[^a-z0-9]/g, '');
+const { nameKey } = require('../utils/playerName');
+// Session 46 — group/dedupe by the normalized name key so "A.J. Ewing" and
+// "AJ Ewing" (or "Jazz Chisholm" / "Jazz Chisholm Jr.") collapse to one player.
+const norm = (s) => nameKey(s);
 const lastName = (full) => {
   const parts = String(full || '').trim().split(/\s+/);
   return parts.length > 1 ? parts[parts.length - 1] : (parts[0] || '');