Session 48: Name normalization at every layer + usage field (2156 tests)

Trace-first: the normalizer functions were correct (S47) but raw names still
flowed through paths that skipped them. Fixed each leaking path.

- 2a (source chokepoint): snapshotService.runSnapshot normalizes each grade's
  player to the de-dotted display AND dedupes to one grade per nameKey|stat
  (highest confidence) before writing grades:{sport} + snapshot:latest. Every
  consumer (GameCard, Explore, leaders, profile) now gets clean merged names.
- 2b: buildPlayerStripsFromProps dedupes a player's props by stat (graded >
  awaiting) → one row per stat (kills "Ks 5.5 AND Ks 3.5" variant dupes).
- 2c: scan tonightsPlayers grid groups by nameKey, displays normalized name.
- 3: profile VYNDR INTELLIGENCE "+0%"/"—" was buildIntel's defaults (separate
  from the grade card's buildIntelFields, which already works). resolvePlayerStats
  now attaches real usage (AB/G) + rest (B2B/Xd); buildIntel renders them; REST
  default is now "—".

Backend 2149 -> 2156 tests (+7), 181 suites. Web build clean (exit 0).

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

web/src/lib/slateAdapter.js

@@ -291,7 +291,18 @@ function buildPlayerStripsFromProps(gameProps, gradeIndex, deltaIndex, now = Dat
       });
     }
   }
-  return order.map((key) => byPlayer[key]);
+  // Session 48 — one prop row per stat (variant dupes like "Ks 5.5" + "Ks 3.5"
+  // from "Matt"/"Matthew" collapse). Prefer the graded prop over an awaiting one.
+  return order.map((key) => {
+    const e = byPlayer[key];
+    const byStat = new Map();
+    for (const pr of e.props) {
+      const sk = String(pr.stat).toLowerCase();
+      const ex = byStat.get(sk);
+      if (!ex || (pr.grade && !ex.grade)) byStat.set(sk, pr);
+    }
+    return { ...e, props: [...byStat.values()] };
+  });
 }
 
 // ── MLB probable pitchers (Session 46) ──────────────────────────────