fix(primer): drop reset-alignment retry; keep Claude binary fix only

Live evidence shows the Codex 5h limit is a trailing rolling window whose
reported reset slides forward with continued usage (observed 18:00 → 18:33
over ~33 min). A timed primer therefore cannot pin the reset to a fixed clock
time, and the previous "retry at reported reset" logic was both based on a
wrong fixed-window model and buggy under sliding resets (stale reset target,
single-shot). Revert it.

Keep the verified Claude primer binary-path fix (resolve repo-root
node_modules) and document the real rolling-window behavior so the primer is
correctly framed as a best-effort warm-up + success/failure record.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/usage-primer.test.ts

@@ -12,13 +12,8 @@ const refreshActiveCodexUsage = vi.fn(async () => {
 });
 const runCodexWarmupCycle = vi.fn(async () => {
   callOrder.push('warmup');
-  return { status: 'warmed', accountIndex: 0 } as {
-    status: string;
-    accountIndex?: number;
-    reason?: string;
-  };
+  return { status: 'warmed', accountIndex: 0 };
 });
-const getAllCodexAccounts = vi.fn<() => Array<{ resetAt?: string }>>(() => []);
 
 vi.mock('./config.js', () => ({
   CODEX_WARMUP_CONFIG: {
@@ -58,10 +53,6 @@ vi.mock('./codex-warmup.js', () => ({
   runCodexWarmupCycle,
 }));
 
-vi.mock('./codex-token-rotation.js', () => ({
-  getAllCodexAccounts,
-}));
-
 describe('usage-primer', () => {
   it('refreshes Codex usage before primer selection and fires regardless of usage level', async () => {
     callOrder.length = 0;
@@ -83,31 +74,4 @@ describe('usage-primer', () => {
       { ignoreZeroUsageWindow: true },
     );
   });
-
-  it('reschedules a retry at the window reset when the slot is rate-limited', async () => {
-    vi.useFakeTimers();
-    vi.setSystemTime(new Date('2026-06-09T00:00:00.000Z'));
-    runCodexWarmupCycle.mockClear();
-    // First slot: the 5h window is still active/exhausted → command fails.
-    runCodexWarmupCycle.mockResolvedValueOnce({
-      status: 'failed',
-      accountIndex: 0,
-      reason: 'exit_1',
-    });
-    // The account's window resets 60s from now.
-    getAllCodexAccounts.mockReturnValue([
-      { resetAt: '2026-06-09T00:01:00.000Z' },
-    ]);
-
-    const { runCodexPrimerCycle } = await import('./usage-primer.js');
-    await runCodexPrimerCycle();
-    expect(runCodexWarmupCycle).toHaveBeenCalledTimes(1);
-
-    // Retry is scheduled at reset (+60s) plus a 30s buffer = +90s.
-    await vi.advanceTimersByTimeAsync(91_000);
-    expect(runCodexWarmupCycle).toHaveBeenCalledTimes(2);
-
-    getAllCodexAccounts.mockReturnValue([]);
-    vi.useRealTimers();
-  });
 });