Fix TUI API retry bookkeeping

[TraderSamwise]

Summary

• normalize dashboard SSE endpoint cleanup through the shared project-root resolver
• add a coalesced retry queue for idempotent TUI notification context / mark-seen mutations
• clear pending/in-flight retry state during dashboard teardown

Verification

• yarn typecheck
• yarn lint
• yarn vitest src/multiplexer/tui-runtime-mutations.test.ts src/multiplexer/project-event-stream.test.ts src/multiplexer/dashboard-control.test.ts src/multiplexer/session-launch.test.ts --run
• yarn vitest --run
• yarn build
• git diff --check

Summary by CodeRabbit

• New Features

  • TUI runtime updates are now batched and coalesced, making notification and status changes more consistent.
  • Session focus now routes its notification and “seen” updates through the batched runtime flow.

• Bug Fixes

  • Improved SSE reconnect cleanup to target the correct project area.
  • Fixed shutdown behavior to clear pending runtime update retries and timers.

• Tests

  • Expanded runtime mutation queue test coverage and updated session-focus assertions.
  • Added a small timing adjustment in one test to prevent flaky expectations.

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Project	Deployment	Actions	Updated (UTC)
app	Ready	Preview, Comment	Jun 25, 2026 2:28am

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: d550e6c6-40e3-4c1a-bc53-25c173ffa0c3

📥 Commits

Reviewing files that changed from the base of the PR and between b624e67 and b999b34.

📒 Files selected for processing (3)

• src/multiplexer/session-launch.test.ts
• src/multiplexer/session-runtime-core.test.ts
• src/multiplexer/session-runtime-core.ts

📝 Walkthrough

Walkthrough

Adds a queued TUI runtime mutation layer for notification-context and session-seen updates, routes session focus and dashboard control through it, exports dashboardProjectRoot for SSE reconnect cleanup, and updates teardown and tests for the new async behavior.

Changes

TUI mutation queue and project-root reuse

Layer / File(s)	Summary
Queue implementation and teardown src/multiplexer/tui-runtime-mutations.ts, src/multiplexer/runtime-lifecycle-methods.ts, src/multiplexer/tui-runtime-mutations.test.ts	Adds the per-host TUI mutation queue, flush and retry handling, queue clearing, teardown clearing, and tests for coalescing, retry, and disposal.
Session focus uses queued TUI updates src/multiplexer/dashboard-control.ts, src/multiplexer/session-launch.ts, src/multiplexer/dashboard-control.test.ts, src/multiplexer/session-launch.test.ts	Dashboard control and session launch enqueue notification-context and seen updates through the queue helpers, and the live tmux and focus-session tests wait for queued effects before asserting calls and state.
Dashboard project root helper src/multiplexer/dashboard-control.ts, src/multiplexer/project-event-stream.ts, src/multiplexer/project-event-stream.test.ts	dashboardProjectRoot is exported from dashboard control, used in SSE reconnect metadata cleanup, and mocked in the event-stream test from host.projectRoot or process.cwd().

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~60 minutes

Possibly related PRs

• TraderSamwise/aimux#245: Shares the SSE reconnect cleanup path in src/multiplexer/project-event-stream.ts that now uses dashboardProjectRoot.
• TraderSamwise/aimux#245: Also overlaps on the dashboard/project-root handling that replaced the local helper in project-event-stream.ts.

Poem

I hopped through tmux with ears held high,
Queues of little updates drifted by.
A seen mark here, a screen there too,
Then roots and retries all flushed through.
🐇✨ The carrot trail is tidy now.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: fixing TUI API retry bookkeeping with queued mutation handling.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/tui-api-cleanup-next-5

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@src/multiplexer/tui-runtime-mutations.ts`:
- Around line 53-57: The notification patch queue is overwriting partial updates
instead of merging them, causing fields from earlier writes to be lost. Update
the mutation queuing logic in requeueContext and the flush/retry path around the
context handling so NotificationContextPatch values are coalesced into the
existing queued patch rather than replaced outright. Use the existing
queue/context flow in tui-runtime-mutations.ts to merge incoming patch objects
with any pending context, preserving fields like screen, sessionId, and
panelOpen across multiple partial updates.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 6f3f6052-2e44-4fc1-a4e2-13d76ed98442

📥 Commits

Reviewing files that changed from the base of the PR and between ed3aad8 and 79f41f2.

📒 Files selected for processing (8)

• src/multiplexer/dashboard-control.test.ts
• src/multiplexer/dashboard-control.ts
• src/multiplexer/project-event-stream.test.ts
• src/multiplexer/project-event-stream.ts
• src/multiplexer/runtime-lifecycle-methods.ts
• src/multiplexer/session-launch.ts
• src/multiplexer/tui-runtime-mutations.test.ts
• src/multiplexer/tui-runtime-mutations.ts