FE-1664: Preserve Live Brunch recovery turns across repeated errors

[kostandinang]

🌟 What is the purpose of this PR?

Fix a case where a new voice request is dropped after Brunch reports an error. Repeated updates with the same error status currently interrupt the new request, even if its submission is already in progress.

The bridge should interrupt existing turns when Brunch enters error, then allow later requests to recover normally.

🔗 Related links

• Review finding in #9745
• FE-1664 (internal)

🚫 Blocked by

• FE-1664: Land remaining voice stack changes #9745 is the parent PR. This follow-up is based on and targets its branch, kostandin/fe-1664-land-voice-stack.

🔍 What does this change?

• Interrupts pending turns only when the status changes to error, rather than on every error update.
• Keeps a new recovery turn through repeated error updates and offers its completed response to Live once Brunch returns to ready.
• Adds regression tests for error interruption and recovery. Stop behavior is unchanged, and its existing tests still pass.

Pre-Merge Checklist 🚀

🚢 Has this modified a publishable library?

This PR:

• does not modify any publishable blocks or libraries, or modifications do not need publishing

Only the private @apps/petrinaut-website application changes, so no changeset is needed.

📜 Does this require a change to the docs?

The changes in this PR:

• are internal and do not require a docs change

🕸️ Does this require a change to the Turbo Graph?

The changes in this PR:

• do not affect the execution graph

⚠️ Known issues

None known for this fix.

🐾 Next steps

No further changes are planned as part of this fix.

🛡 What tests cover this?

The new tests check that entering error interrupts pending work once and prevents its late result from being offered to Live. They also check that a recovery turn survives repeated error updates before and after admission, is offered exactly once after ready, and that a later transition into error interrupts again.

The recovery test fails on the original implementation and passes with this fix. Local verification passed with Node 22.21.1 and Yarn 4.16.0:

• Bridge tests: 45 passed, including the existing Stop tests.
• Website unit tests: 796 passed across 64 files.
• Website build, TypeScript checks, and ESLint task: passed. The lint:eslint task uses type-aware Oxlint.
• Repository formatting check and git diff --check: passed.

❓ How to test this?

1. Check out this branch and install dependencies.

2. Run the focused regression tests:

   yarn workspace @apps/petrinaut-website test:unit src/main/app/voice-interview/live-brunch-bridge.test.ts

3. Run the website checks and formatting check:

   npx turbo run build test:unit lint:tsc lint:eslint --filter @apps/petrinaut-website --output-logs errors-only
   yarn lint:format

📹 Demo

Not applicable. This changes internal turn handling, with no visual changes.

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PR Summary

Medium Risk
Changes when live voice turns are interrupted and when Brunch answers are offered to Live during error recovery, with subtle user-facing impact if wrong.

Overview
Fixes recovery voice requests being dropped when Brunch keeps reporting error: LiveBrunchBridge.update now calls #interruptTurns only on the first transition into error (same edge-triggered pattern as stopped), so repeated error snapshots no longer clear an in-flight recovery turn.

After recovery completes, commentary is still withheld while status stays error and is offered once when chat returns to ready. A later fresh error transition interrupts again as before.

Two regression tests cover one-shot interruption with suppressed late results, and recovery surviving duplicate error updates through settlement.

^{Reviewed by Cursor Bugbot for commit 5bbe1a9. Bugbot is set up for automated code reviews on this repo. Configure here.}

The base branch was changed.