Session 59: Addendum + work-order 1.6 + Phase 2 + Phase 3 (2352 tests)

Overnight sprint for the Saturday 10 AM ET deploy gate — day one of the
public ledger record locks against freshly posted lines.

Task A — ledger team/opponent (migration 020, applied at 0 rows):
  populated in both write paths from the real feed; opponent only when the
  player's team matches a game participant (never guessed). Roadmap: Phase
  4.5 WNBA ESPN-boxscore settlement (due ~Jul 24) + Phase 5 per-tier
  calibration logged.

Task B — work-order 1.6 CLOSED (canonical player keys):
  - searchPlayer resolves via nameKey; the old matcher deleted accents
    ("Sanchez" with acute -> "snchez") and substring-guessed onto the WRONG
    player (the mismatched last-10 bug). Ambiguous -> null, never guess.
  - Slate JOIN INVARIANT: a graded prop whose player's real team isn't in
    the game is dropped (TB player can't render under MIL@PIT) — locked by
    tests that fail the suite on regression.
  - grades:{sport} TTL 2h -> 6h (expired between 5h cron gaps — the real
    cause of /team "No active props" for slate players).

Task C — Phase 2 slate UX: tabs are THE filter (URL ?sport=, deep-linkable,
  duplicate legacy tablist removed); cards cap at 6 graded props sorted
  A+->F with ALL N READS in-place expander; waiting states show the real
  next pipeline run ("Grades post ~6:00 PM ET").

Task D — Phase 3 mobile P0: root cause of vanished 390px nav was HIDE_ON
  including '/' (landing had zero navigation) — fixed; html/body overflow-x
  contained; GAME LINES collapses to best-line summary + "N BOOKS" expander
  below 640px; venue drops before time/pitchers ever truncate.

Live verification: raw ESPN today STILL returns the Jun 13 NYK@SA Finals
game without a date pin; the pinned fetch returns 0 games, 0 off-date.

Backend 2327 -> 2352 tests (202 suites), web build exit 0.

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

src/services/ledgerService.js

@@ -73,6 +73,33 @@ const sideOf = (direction) =>
 // fabricated zero line/odds is exactly what the data-semantics rule forbids).
 const numOrNull = (v) => (v == null || !Number.isFinite(Number(v)) ? null : Number(v));
 
+// Nickname token (last word, lowercased) — the stable cross-source team
+// identifier ("New York Yankees" ↔ "Yankees" ↔ "NYY" won't match, but
+// full-name feeds match full-name feeds; abbr feeds match abbr feeds).
+const nickToken = (name) => {
+  const w = String(name || '').trim().split(/\s+/);
+  return (w[w.length - 1] || '').toLowerCase().replace(/[^a-z]/g, '');
+};
+const teamsMatch = (a, b) => {
+  if (!a || !b) return false;
+  const sa = String(a).toLowerCase(), sb = String(b).toLowerCase();
+  return sa === sb || nickToken(a) === nickToken(b);
+};
+
+/**
+ * Session 59 — team/opponent from the REAL feed. The player's team comes
+ * from the stats resolve (g.team); the opponent is the other side of the
+ * prop's game IF the team matches one of its participants. No match →
+ * opponent stays null — never guessed.
+ */
+function teamOpponentFor(g, prop) {
+  const team = g && g.team ? String(g.team) : null;
+  if (!team || !prop) return { team, opponent: null };
+  if (teamsMatch(team, prop.home_team)) return { team, opponent: prop.away_team || null };
+  if (teamsMatch(team, prop.away_team)) return { team, opponent: prop.home_team || null };
+  return { team, opponent: null };
+}
+
 /** Index odds props by nameKey|stat for lock/closing lookups. */
 function indexProps(props) {
   const map = {};
@@ -114,7 +141,10 @@ function rowsFromSnapshot(sport, grades, oddsProps, nowIso) {
     const prop = byKey[`${nameKey(player)}|${stat}`] || null;
     const gradedTs = locked.timestamp || nowIso;
     const gameDate = dateET(prop && prop.game_time) || dateET(gradedTs) || todayET();
+    const { team, opponent } = teamOpponentFor(g, prop);
     rows.push({
+      team,
+      opponent,
       user_id: null,
       player_key: nameKey(player),
       player_name: normalizeName(player).display || player,
@@ -375,5 +405,6 @@ module.exports = {
   __internals: {
     rowsFromSnapshot, computeClv, clvResultOf, indexProps, gameIdFor,
     dateET, sideOf, oddsForSide, isConfigured, CONFLICT,
+    teamOpponentFor, teamsMatch,
   },
 };