Restore Google sign-in retry state for reject and no-navigation paths

[Copilot]

Canonical issue

Linked by automation.

Outcome

Google sign-in now reliably recovers to a retryable state when initiation fails or resolves without starting navigation, while preserving the in-flight disabled state when redirect does start.

Scope

• Included:
  • Login button state handling
    • Added a post-signIn micro-wait before deciding whether navigation started, preventing false retry/error UI during deferred redirect start.
  • Targeted regression coverage
    • Added a test for the deferred-navigation edge case (signIn resolves, navigation begins on next tick) to lock in duplicate-click protection and no-error behavior.
  • Existing retry-path guarantees preserved
    • Reject and no-navigation return paths continue to re-enable the button and show a generic, accessible error message.
• Explicitly excluded:
  • Callback-path sanitization
  • Public auth-route behavior
  • OAuth provider configuration/credentials
  • Deployment/payment behavior

await signIn('google', { callbackUrl });
await new Promise((resolve) => window.setTimeout(resolve, 0));

if (window.location.href !== initialLocation) {
  return; // keep submitting/disabled state during redirect start
}

Risk

• Risk level: low
• Failure mode:
  • If redirect start timing changes again, retry/error state could regress on edge timing boundaries.
• Rollback:
  • Revert apps/web/src/app/login/GoogleSignInButton.tsx and apps/web/src/app/login/GoogleSignInButton.test.tsx to previous revision.

Verification

Head SHA: a627bb2f3f997a5b38cf8fdb960429170eeeaf27

• Focused checks executed:

  • npm --workspace=apps/web run test -- src/app/login/GoogleSignInButton.test.tsx src/lib/__tests__/auth-paths.test.ts src/lib/__tests__/auth-config-source.test.ts src/__tests__/proxy-auth-gate.test.ts
  • npm --workspace=apps/web run lint
  • npm --workspace=apps/web run type-check
  • npm --workspace=apps/web run build

• Focused tests

• Required CI

• Review threads resolved

Production evidence

Not applicable for this change set (UI state + unit/regression coverage; no runtime config or deployment behavior change).

Agent handoff

• One canonical issue is linked
• No competing PR implements the same issue
• Acceptance criteria are satisfied
• Required checks pass on the current head
• Human decision is requested only for product, security, irreversible infrastructure, or production approval

• Fixes [Agent] Restore Google login retry state #1987

[coderabbitai]

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Ignore keyword(s) in the title.

⛔ Ignored keywords (3)

• WIP
• DO NOT MERGE
• [skip ci]

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[kk-agent]

AXIOM keep-moving: closing as duplicate of open auth retry work (#1971/#1995). Prefer single survivor path.

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