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>

tests/unit/mlbStatsAdapter.test.js

@@ -125,3 +125,54 @@ describe('mlbStatsAdapter — batter vs pitcher', () => {
     expect(mockAxiosGet).toHaveBeenCalledTimes(1);
   });
 });
+
+// Session 59 (work-order 1.6) — canonical player resolution. The old matcher
+// deleted accented letters ("Sánchez" → "snchez") and substring-guessed on a
+// miss, which could return ANOTHER player's id (→ wrong last-10 log).
+describe('searchPlayer — canonical nameKey resolution', () => {
+  const PLAYERS = {
+    data: {
+      people: [
+        { id: 100, fullName: 'Cristopher Sanchez', currentTeam: { name: 'Philadelphia Phillies', id: 1 }, primaryPosition: { abbreviation: 'P' } },
+        { id: 200, fullName: 'Brandon Lowe', currentTeam: { name: 'Tampa Bay Rays', id: 2 }, primaryPosition: { abbreviation: '2B' } },
+        { id: 201, fullName: 'Nathaniel Lowe', currentTeam: { name: 'Texas Rangers', id: 3 }, primaryPosition: { abbreviation: '1B' } },
+        { id: 202, fullName: 'Josh Lowe', currentTeam: { name: 'Tampa Bay Rays', id: 2 }, primaryPosition: { abbreviation: 'OF' } },
+        { id: 300, fullName: 'Matthew Boyd', currentTeam: { name: 'Chicago Cubs', id: 4 }, primaryPosition: { abbreviation: 'P' } },
+      ],
+    },
+  };
+
+  test('accented query resolves to the unaccented MLB record (Sánchez ≡ Sanchez)', async () => {
+    mockAxiosGet.mockResolvedValue(PLAYERS);
+    const hit = await adapter.searchPlayer('Cristopher Sánchez');
+    expect(hit).toBeTruthy();
+    expect(hit.id).toBe(100);
+  });
+
+  test('never returns another player on a shared last name (Brandon ≠ Nathaniel Lowe)', async () => {
+    mockAxiosGet.mockResolvedValue(PLAYERS);
+    const hit = await adapter.searchPlayer('Brandon Lowe');
+    expect(hit.id).toBe(200);
+    expect(hit.team).toBe('Tampa Bay Rays');
+  });
+
+  test('nickname resolves via nameKey (Matt Boyd → Matthew Boyd)', async () => {
+    mockAxiosGet.mockResolvedValue(PLAYERS);
+    const hit = await adapter.searchPlayer('Matt Boyd');
+    expect(hit && hit.id).toBe(300);
+  });
+
+  test('ambiguous fallback returns null — a missing profile beats a wrong one', async () => {
+    mockAxiosGet.mockResolvedValue({
+      data: {
+        people: [
+          { id: 400, fullName: 'Jose Ramirez', currentTeam: { name: 'A' }, primaryPosition: { abbreviation: '3B' } },
+          { id: 401, fullName: 'Jorge Ramirez', currentTeam: { name: 'B' }, primaryPosition: { abbreviation: 'P' } },
+        ],
+      },
+    });
+    // "J. Ramirez" collapses to first-initial J — TWO candidates → null.
+    const hit = await adapter.searchPlayer('Jhon Ramirez');
+    expect(hit).toBeNull();
+  });
+});