feat(mobile): open the thread screen as soon as a new task is submitted

[juliusmarminge]

Submitting a mobile task now opens its thread after the local outbox save, while server and worktree setup continue. The sent prompt stays visible, and one shimmering status pill transitions from setup to the working timer without disappearing or changing the feed inset.

Queue persistence failures leave the original draft editor open. Rejected creations offer Edit task with the original prompt plus any text and attachments entered during setup. The handoff tolerates the prompt, shell, and turn arriving separately; follow-up sends stay blocked until creation is ready.

Verification: 110 focused outbox, creation, recovery, and timer tests pass. Mobile and shared-package typechecks pass. iPhone 17 Pro on iOS 26.5 verified against a disposable environment and Git project, using the same prompt and a five-second checkout hook on both revisions. Base bb5748bfac0 remains on the draft sheet during checkout; head 43685693326 opens the thread and retains its pill through startup. React Doctor reports no errors and five existing complexity warnings. All executed CI build/test jobs passed; Macroscope correctness passed, with its separate approvability check neutral. Confirmed review findings were fixed and resolved.

The mobile state changes cover iOS and Android. Web/desktop use their existing submission flow; no wire contracts or provider adapters change. The shared timing fallback now also stops for a turn that fails before provider startup.

Before: base during checkout	After: head during checkout

Before recording · After recording

Original implementation: Claude Fable 5 in T3 Code, Claude Code harness. Audit, recovery fixes, status handoff, shimmer, and verification: GPT-6 in Codex.

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR changes the default mobile task-submission lifecycle and adds substantial outbox, pending-thread, navigation, and failure-recovery state across production code. The unresolved recovery and prompt-lifetime concerns further warrant human review of the asynchronous behavior.

Not approved because:

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

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[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

ℹ️ The exact PR base did not have a successful artifact. Baseline uses the latest successful main measurement shown below.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	11.3 KiB	13.6 KiB	+2.3 KiB (+20.4%)	15.1 KiB	✅
Codex	Thread snapshot wire	5.5 KiB	7.0 KiB	+1.6 KiB (+29.0%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	5.9 KiB	6.6 KiB	+748 B (+12.5%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	49.7 KiB	57.1 KiB	+7.3 KiB (+14.7%)	66.4 KiB	✅
Codex	Live turn messages	16	10	−6 (−37.5%)	21	✅
Claude	Total thread wire	11.3 KiB	13.6 KiB	+2.2 KiB (+19.6%)	15.1 KiB	✅
Claude	Thread snapshot wire	5.5 KiB	7.0 KiB	+1.6 KiB (+28.7%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	5.9 KiB	6.5 KiB	+668 B (+11.1%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	50.6 KiB	57.8 KiB	+7.2 KiB (+14.3%)	66.4 KiB	✅
Claude	Live turn messages	16	8	−8 (−50.0%)	21	✅

Baseline: 83d769f · PR result: 4368569 · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 113.9 KiB
• Claude decoded thread snapshot: 114.6 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

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📝 Walkthrough

Walkthrough

Task submission now uses the thread outbox for immediate and queued tasks. Mobile state tracks pending creation outcomes, builds temporary thread shells, blocks follow-up messages, and renders preparation or failure recovery states.

Changes

Pending thread creation flow

Layer / File(s)	Summary
Outbox-based task submission apps/mobile/src/features/threads/NewTaskDraftScreen.tsx, apps/mobile/src/features/threads/new-task-flow-provider.tsx	Task submissions enqueue pending-task messages. Immediate sends include checkout context. Branch resolution preserves explicit selections.
Creation outcome tracking apps/mobile/src/state/pending-thread-creation.ts, apps/mobile/src/state/use-thread-outbox-drain.ts, apps/mobile/src/state/*test.ts, apps/mobile/src/state/new-task-draft-key.ts	Queued messages produce thread shells and orchestration messages. Delivered and failed outcomes remain available until resolved or cleared.
Pending selection and composition apps/mobile/src/state/use-thread-selection.ts, apps/mobile/src/state/use-thread-composer-state.ts, apps/mobile/src/state/use-thread-detail.ts, packages/shared/src/orchestrationTiming.ts, packages/shared/src/orchestrationTiming.test.ts	Pending creations provide temporary thread details and prompt messages. Follow-up sends remain blocked until creation completes. Active work timing uses turn timing metadata.
Creation status and recovery UI apps/mobile/src/features/threads/ThreadRouteScreen.tsx, apps/mobile/src/features/threads/ThreadDetailScreen.tsx, apps/mobile/src/features/threads/ThreadCreationFailedCard.tsx, apps/mobile/src/features/threads/ThreadComposer.tsx, apps/mobile/src/features/threads/floating-*.ts*	Preparing and failed creation states are rendered in thread views. Failed creations offer task editing. Composer blocking reasons come from thread state.

Estimated code review effort: 4 (Complex) | ~60 minutes

Merge Risk: 🟡 Moderate · up to e1db6

Task submission now navigates immediately while creation is queued, but delayed persistence failure can still strand users without a direct draft-recovery path. In addition, the working indicator can reflect a superseded turn while a newer one is active. These recovery and status correctness issues should be addressed before merge.

Suggested reviewers: t3dotgg

Sequence Diagram(s)

sequenceDiagram
  participant NewTaskDraftScreen
  participant ThreadOutbox
  participant ThreadOutboxDrain
  participant ThreadRouteContent
  participant ThreadDetailScreen
  NewTaskDraftScreen->>ThreadOutbox: enqueue pending task
  ThreadOutbox->>ThreadOutboxDrain: deliver creation message
  ThreadOutboxDrain->>ThreadRouteContent: record delivered or failed outcome
  ThreadRouteContent->>ThreadDetailScreen: pass creation state
  ThreadDetailScreen-->>ThreadRouteContent: render preparation or failure UI

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🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 33.33% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 24 functions across 18 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
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.
Title check	✅ Passed	The title clearly summarizes the primary change: mobile task submission now opens the thread screen immediately.
Description check	✅ Passed	The description explains the submission flow, failure recovery, UI behavior, rationale, verification results, platform scope, screenshots, and recordings. It does not include the template's explicit s…

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Inline comments:
In `@apps/mobile/src/features/threads/ThreadRouteScreen.tsx`:
- Around line 750-768: Update handleEditFailedCreation and the related draft
restoration flow so edits made while creationState.kind is “preparing,”
including attachments, are transferred from the temporary thread draft into the
recovery draft. Obtain and pass the resulting draftId in the NewTaskDraft
navigation params before calling clearPendingThreadCreationOutcome, and add
failure coverage for both text and attachment edits.

In `@apps/mobile/src/state/use-thread-outbox-drain.ts`:
- Around line 967-977: Update the cleanup effect around
pendingThreadCreationOutcomesAtom to subscribe via useAtomValue instead of
imperatively reading the registry, and include the subscribed outcomes in the
effect dependencies alongside threads. Add a regression test covering an
existing thread shell when recordPendingThreadCreationOutcome runs, ensuring
delivered outcomes are cleared.

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• apps/mobile/src/features/threads/NewTaskDraftScreen.tsx
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• apps/mobile/src/features/threads/ThreadCreationFailedCard.tsx
• apps/mobile/src/features/threads/ThreadDetailScreen.tsx
• apps/mobile/src/features/threads/ThreadRouteScreen.tsx
• apps/mobile/src/features/threads/floating-working-control.tsx
• apps/mobile/src/features/threads/floating-working-status.ts
• apps/mobile/src/features/threads/new-task-flow-provider.tsx
• apps/mobile/src/features/threads/use-project-actions.ts
• apps/mobile/src/state/pending-thread-creation.test.ts
• apps/mobile/src/state/pending-thread-creation.ts
• apps/mobile/src/state/use-thread-composer-state.ts
• apps/mobile/src/state/use-thread-detail.ts
• apps/mobile/src/state/use-thread-outbox-drain.test.ts
• apps/mobile/src/state/use-thread-outbox-drain.ts
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Inline comments:
In `@apps/mobile/src/features/threads/NewTaskDraftScreen.tsx`:
- Around line 1049-1057: Update the queue-persistence rejection handler around
restoreComposerDraftSnapshot so it also removes the invalid Thread route after
restoring the draft. Replace or dismiss that route using the existing navigation
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Inline comments:
In `@packages/shared/src/orchestrationTiming.ts`:
- Around line 58-59: Update the running-session logic around runningTurnId so
the fallback remains active whenever session.orchestrationStatus is "running",
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Inline comments:
In `@packages/shared/src/orchestrationTiming.ts`:
- Line 60: Update deriveActiveWorkStartedAt to compare session.activeTurnId with
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