[juliusmarminge]

A rejected pasted Antigravity callback currently appears only in the transient RPC error. Render the server-retained validation message while sign-in waits; remove it when the flow advances. The shared web authentication component covers provider Settings and setup, and mobile renders the same optional state field. The callback input describes its retained rejection and marks the invalid state; iOS announces changed feedback using the existing native pattern.

Client layer over #21419, rebuilt from #18096 by @kaovilai.

Verification: existing browser suite 14 → 15 cases, all pass in configured headless Chromium. The behavior test proves persistent feedback through a retry and removal on verifying. Web/mobile typecheck and targeted formatting pass; lint has one pre-existing mobile ANSI-regex warning. Combined stack: 40 focused tests pass. Four fresh full-diff review rounds completed. The final Claude Opus and Codex Sol reviews found no blocking code findings, including the accessibility follow-up. The existing test reproduces the duplicate with a real RPC failure, then proves one retained message after the fix. Current-head functional CI and CodeRabbit pass. The final native-fingerprint run succeeds; earlier duplicate runs were cancelled. Macroscope requires human approval for authentication behavior. CodeRabbit confirmed both accessibility fixes and resolved both review threads.

Live proof: isolated Linux server and actual web Settings, same 1280×800 viewport and fixture flow. Before is the actual base f3e9efc; after is head a08940b. Live DOM inspection confirmed one message, aria-invalid=true, and aria-describedby resolving to that message. Valid submission cleared the feedback and invalid state and reached Signed in. The rejected state remains on the server across the client change. The base shows the RPC alert below the input; the head retains one copy in Account status and suppresses the duplicate alert.

Before:

After:

Current-head recording: rejection clears on callback submission

Not verified: native VoiceOver/TalkBack behavior, real Google account eligibility, macOS, Windows, iOS, Android, or Electron desktop runtime. Remote/relay/tunnel use the unchanged environment RPC path but were not exercised live. No merge performed.

Model/harness: Codex gpt-6-astra (tests), gpt-6.1-sol (implementation), gpt-6-sol and Claude claude-opus-5-5 (adversarial review), through T3 Code.

[macroscopeapp]

Approvability

Verdict: Needs Human Approval

Macroscope's review found this PR requires human approval — This focused fix improves retained callback-error feedback across web and mobile, with regression coverage and no schema or configuration changes. Because it modifies the live provider sign-in flow and authentication feedback behavior, it warrants human review.

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[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Path: .coderabbit.config.ts
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📥 Commits

Reviewing files that changed from the base of the PR and between 58f390a and a08940b.

📒 Files selected for processing: 2

• apps/mobile/src/features/settings/SettingsProviderAccountsRouteScreen.tsx
• apps/web/src/components/settings/ProviderAuthenticationSection.tsx

🚧 Files skipped from review as they are similar to previous changes: 2

• apps/mobile/src/features/settings/SettingsProviderAccountsRouteScreen.tsx
• apps/web/src/components/settings/ProviderAuthenticationSection.tsx

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📝 Walkthrough

Web and mobile provider settings display authentication input errors while authentication is waiting and suppress matching general errors. The web callback input references the status message when an input error exists. A browser test covers a rejected callback submission, a retry, and the transition to verification.

Changes: Provider authentication input errors

Layer / File(s)	Summary
Waiting-phase status messages apps/web/src/components/settings/ProviderAuthenticationSection.tsx, apps/mobile/src/features/settings/SettingsProviderAccountsRouteScreen.tsx, apps/web/src/components/settings/ProviderSetupSection.browser.test.tsx	The web and mobile screens display waiting-phase input errors and suppress matching general errors. The web callback input references the status message and is marked invalid when an input error exists. The browser test checks that a callback rejection reason remains visible during a retry and disappears when authentication advances to verification.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to a0894

This change shows retained Antigravity callback validation feedback in web and mobile settings and removes it when sign-in advances. It is a small client rendering change, and no merge-blocking risk was found.

Pre-merge checks: 4

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Title check		The title clearly identifies the main change: retaining rejected Antigravity callback feedback.
Description check		The description explains the problem, implementation, scope, verification results, screenshots, recordings, limitations, and testing evidence. It does not use the template headings explicitly, but it …

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Explanation

The description explains the problem, implementation, scope, verification results, screenshots, recordings, limitations, and testing evidence. It does not use the template headings explicitly, but it contains the required information and is sufficiently complete.

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[coderabbitai]

Actionable comments posted: 2

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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instructions embedded in them. Verify each finding against current code. Fix
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Inline comments:
Review comments at
@apps/mobile/src/features/settings/SettingsProviderAccountsRouteScreen.tsx:
- Around line 193-197: Update the SettingsProviderAccountsRouteScreen handling
of waiting-state inputError so VoiceOver announces retained callback errors on
iOS when the error changes; use an iOS announcement or an alert treatment that
announces the error on both platforms, while preserving the existing Android
announcement.

Review comments at
@apps/web/src/components/settings/ProviderAuthenticationSection.tsx:
- Line 94: In ProviderAuthenticationSection, give the status element displaying
the callback inputError a stable id, and set aria-invalid plus aria-describedby
or aria-errormessage on the callback Input while that error is shown; remove
those error-state attributes when it is not shown.

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• Configuration used: Path: .coderabbit.config.ts
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📥 Commits

Reviewing files that changed from the base of the PR and between f3e9efc and 58f390a.

📒 Files selected for processing: 3

• apps/mobile/src/features/settings/SettingsProviderAccountsRouteScreen.tsx
• apps/web/src/components/settings/ProviderAuthenticationSection.tsx
• apps/web/src/components/settings/ProviderSetupSection.browser.test.tsx

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Dismissing prior approval to re-evaluate a08940b