feat(claude): reauthenticate failed V2 threads

[flamboh]

Note

🤖 GPT-6 on behalf of Oliver

ELI5

Sign back into Claude from the failed thread, including when the environment runs on another machine.

Problem

Expired Claude subscription credentials strand a failed task. This draft targets Julius's V2 branch, t3code/codex-turn-mapping, and depends on #2829.

Fix

Run Claude login on the selected environment and provider instance, show its browser link, and accept a pasted code in web, desktop, and mobile. V2 captures the failed run before login and retries its persisted prompt and attachments only while it remains current. Login and retry have separate outcomes; cancellation and changed threads or provider settings cannot silently resume stale work.

UI Changes

Before

The thread shows an authentication error without an in-app recovery action.

After

The error offers Reauthenticate. The dialog reports sign-in and whether the task resumed.

Validation

Focused authentication, provider maintenance, V2 recovery, and client tests; scoped server, contracts, client-runtime, web, and mobile typechecks; targeted lint and formatting.

Live V2 sign-in and new UI video evidence are pending.

Changes by GPT-6 through Codex, with GPT-5.6 Luna agents assisting implementation and review.

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR adds a cross-layer Claude reauthentication workflow that launches an interactive login command, handles provider credentials and environment selection, persists new error state, and exposes a new authorized RPC. The authentication-sensitive scope and unresolved risks around command output, instance targeting, and locality require human review.

Not approved because:

• 3 blocking correctness issues found at or above your repo's Minimum Blocking Severity

^{Adjust the Minimum Blocking Severity for this repo — including turning it Off — in Settings. You can add or adjust custom eligibility rules. Learn more.}

[flamboh]

Note

🤖 GPT-5.6 Sol on behalf of Oliver

Remote Claude reauthentication:

claude-remote-reauthentication.webm