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/snapshotService.js

@@ -18,7 +18,6 @@
  */
 
 const SNAP_TTL = 6 * 3600;      // 6h — a snapshot is valid until the next run
-const GRADES_TTL = 2 * 3600;    // matches gradeSlateService
 const TICKER_TTL = 24 * 3600;
 const TICKER_CAP = 50;
 const DELTA_NOISE = 0.5;        // ignore movements smaller than this
@@ -264,12 +263,17 @@ async function runSnapshot(sport, opts = {}) {
   const oddsByKey = indexOdds(props);
   const players = [...new Set(graded.map((g) => g.player || g.player_name).filter(Boolean))];
   const archByPlayer = {};
+  // Session 59 — capture the player's REAL team from the same stats resolve
+  // (statsapi/ESPN), never guessed. Feeds the ledger team/opponent columns
+  // and the slate join guard (a prop only attaches to its own game).
+  const teamByPlayer = {};
   await mapLimit(players, STATS_CONCURRENCY, async (player) => {
     try {
       const stats = await deps.resolveStats(player, sp);
       if (stats && stats.found) {
         const c = deps.classify(sp, stats.classifierInput || {});
         archByPlayer[player] = c.primary ? c.primary.name : null;
+        if (stats.team) teamByPlayer[player] = stats.team;
       }
     } catch { /* graceful — no badge */ }
   });
@@ -278,6 +282,7 @@ async function runSnapshot(sport, opts = {}) {
     ...g,
     gradedAt: gradedAtFor(g, oddsByKey, ts),
     archetype: archByPlayer[g.player || g.player_name] || null,
+    team: teamByPlayer[g.player || g.player_name] || g.team || null,
   }));
 
   // Line deltas vs the previous snapshot's locked lines.
@@ -288,7 +293,11 @@ async function runSnapshot(sport, opts = {}) {
   if (prev) await deps.cacheSet(`snapshot:${sp}:previous`, prev, SNAP_TTL);
   const snapshot = { sport: sp, updated_at: ts, grades: enriched, deltas, gradeCount: enriched.length };
   await deps.cacheSet(`snapshot:${sp}:latest`, snapshot, SNAP_TTL);
-  await deps.cacheSet(`grades:${sp}`, { grades: enriched, updated_at: ts, source: (odds && odds.provider) || 'odds-api' }, GRADES_TTL);
+  // Session 59 — grades:{sport} must outlive the gap between cron runs (up to
+  // 5h) or team rosters / Explore / leaders go dark mid-day. SNAP_TTL (6h),
+  // NOT the legacy 2h gradeSlateService TTL — that gap was why /team showed
+  // "No active props" for players who were on the slate (audit 2.4).
+  await deps.cacheSet(`grades:${sp}`, { grades: enriched, updated_at: ts, source: (odds && odds.provider) || 'odds-api' }, SNAP_TTL);
 
   // Ticker exhaust.
   const events = generateTickerEvents(sp, enriched, deltas, ts);