feat(composer): allow users to set cmd/ctrl+enter as the prompt send key

[danieldunderfelt]

What Changed

Adds a setting that lets the user set the prompt sending key to cmd/ctrl+enter, instead of only enter. For the background thread function, that uses Shift+Cmd/Ctrl+Enter when the setting is set to mod+enter.

Why

I often send prompts by mistake before they are done, and this feature is highly necessary for me. cmd/ctrl seems to be the standard alternative, and many other AI apps implement it (including t3 chat).

UI Changes

Before

After

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

Summary by CodeRabbit

• New Features

  • Added a setting to choose whether prompts are sent with Enter or Cmd/Ctrl+Enter.
  • Added configurable diff color schemes: red-green or blue-orange.
  • Updated composer shortcuts to support background submissions with the selected send key.
  • Enter now selects an active completion-menu option when applicable.
  • Added searchable settings entries for prompt sending and device-related options.
  • Improved mobile thread organization with Arrange threads actions for reordering and managing threads.

• Documentation

  • Documented the prompt-send setting and related background thread shortcuts.

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This adds a persisted user-facing keyboard preference that changes prompt submission and background-thread shortcuts across the shared composer, rather than a non-runtime or mechanical change. The configured shortcut also has an unresolved completion-menu interaction and platform-specific documentation inconsistency, so the behavior warrants human review.

Not approved because:

• 1 blocking correctness issue 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.}

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📒 Files selected for processing (2)

• apps/web/src/components/settings/settingsSearch.ts
• packages/contracts/src/settings.ts

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📝 Walkthrough

Walkthrough

The composer now supports configurable prompt submission with Enter or Cmd/Ctrl+Enter. Settings add selectable diff color schemes and device settings entries. The changes include persistence contracts, UI controls, command-menu handling, tests, search metadata, and documentation.

Changes

Composer send-key configuration

Layer / File(s)	Summary
Settings contract and control packages/contracts/src/settings.ts, apps/web/src/components/settings/SettingsPanels.tsx, apps/web/src/components/settings/settingsSearch.ts	Adds the composerSendKey setting with an enter default, platform-aware labels, reset handling, changed-setting tracking, and searchable settings metadata.
Composer submission behavior apps/web/src/composer-logic.ts, apps/web/src/components/chat/ChatComposer.tsx, apps/web/src/composer-logic.test.ts, docs/user/composer.md, docs/user/thread-sidebar.md	Applies the configured key to submission, background drafts, citation submission, and completion-menu selection. Tests cover both key modes. Documentation describes the shortcuts and background-thread behavior.

Diff color scheme setting

Layer / File(s)	Summary
Diff color scheme control apps/web/src/components/settings/SettingsPanels.tsx	Adds red-green and blue-orange options with validation, swatches, and reset behavior.

Device settings catalog

Layer / File(s)	Summary
Device settings contract and search packages/contracts/src/settings.ts, apps/web/src/components/settings/settingsSearch.ts	Adds server settings and patch fields for device access, device helper support, onboarding completion, and SSH device hosts. Adds searchable Integration settings entries.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~25 minutes

Sequence Diagram(s)

sequenceDiagram
  participant User
  participant SettingsPanels
  participant ChatComposer
  participant composerEnterCommandAction
  participant composerSubmissionIntentForEnter
  User->>SettingsPanels: Select composer send key
  SettingsPanels->>ChatComposer: Apply composerSendKey
  User->>ChatComposer: Press Enter or modifier+Enter
  ChatComposer->>composerEnterCommandAction: Pass key and menu state
  composerEnterCommandAction->>composerSubmissionIntentForEnter: Resolve submission intent
  composerSubmissionIntentForEnter-->>ChatComposer: Return submit or select-menu action

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Suggested reviewers: juliusmarminge, maria-rcks, t3dotgg

Merge Risk: ⚪ Minimal · up to 8d8ea

The new preference retains Enter by default and supports Cmd/Ctrl+Enter submissions, including background-thread behavior. Contract wiring and focused tests cover the change, so no merge-blocking risk is currently evident.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 25.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 6 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the primary change: allowing users to configure Cmd/Ctrl+Enter as the prompt send key.
Description check	✅ Passed	The description includes the required What Changed, Why, UI Changes, and Checklist sections. It explains the feature and includes before-and-after screenshots. The interaction video requested by the t…
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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Actionable comments posted: 3

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Inline comments:
In `@apps/web/src/components/settings/SettingsPanels.tsx`:
- Around line 2402-2404: Update the onValueChange handler for
SelectPrimitive.Root near updateSettings so it narrows the string value to the
allowed composerSendKey options, "enter" or "mod-enter", before calling
updateSettings; do not rely only on the truthiness check, and preserve ignoring
null or unsupported values.

In `@docs/user/composer.md`:
- Line 59: Update the heading “Require Cmd+Enter to send” to name both supported
shortcuts, Cmd+Enter and Ctrl+Enter, so it applies clearly across macOS,
Windows, and Linux.

In `@docs/user/thread-sidebar.md`:
- Around line 21-22: Update the send-key instruction in the thread sidebar
documentation to mention both Cmd+Enter and Ctrl+Enter, while preserving the
guidance to hold Shift.

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📥 Commits

Reviewing files that changed from the base of the PR and between 061543e and 505e2d5.

📒 Files selected for processing (8)

• apps/web/src/components/chat/ChatComposer.tsx
• apps/web/src/components/settings/SettingsPanels.tsx
• apps/web/src/components/settings/settingsSearch.ts
• apps/web/src/composer-logic.test.ts
• apps/web/src/composer-logic.ts
• docs/user/composer.md
• docs/user/thread-sidebar.md
• packages/contracts/src/settings.ts

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[juliusmarminge]

Superseded by #12075 (Send shortcut setting with Enter / Ctrl·⌘+Enter options, plus follow-up Queue/Steer controls). Closing this as leftover hygiene after that merge landed on main.

[danieldunderfelt]

Superseded by #12075 (Send shortcut setting with Enter / Ctrl·⌘+Enter options, plus follow-up Queue/Steer controls). Closing this as leftover hygiene after that merge landed on main.

Epic! Thanks.