feat(mobile): one sheet for model and thread settings

[t3dotgg]

Changing the model on mobile meant drilling through nested native context menus: provider submenu, then model, with effort and runtime hiding in a second menu. No search, no overview, and every provider doubled its menu length with a "legacy models" submenu.

Now the composer has one pill that shows the whole thread setup ("Claude Fable 5 · Max · 1M · Auto") and opens a single bottom sheet:

• Model list grouped by provider with harness logos. Claude and Codex stay expanded; other providers (OpenCode's 438-model OpenRouter catalog...) fold behind their header with a count. Legacy models hide behind a pill and get a badge when shown.
• Model changes stage until an explicit Save; re-tapping the applied model cancels. While staged, the settings rows edit the staged model's options and Save applies everything in one write.
• Reasoning, context window, and runtime each live behind a compact disclosure row whose submenu stacks in a small panel over the sheet, so the sheet never changes size. Ultracode/ultrathink pseudo-efforts aren't offered on mobile.
• Existing threads only list their own harness's models; picking a harness happens on the new-task draft, which shares the same sheet.
• Plan mode has no toggle here: threads build by default (the /plan command path is unchanged).

Light	Staged model	Submenu	Dark	Dark submenu

Verified end to end on the iOS Simulator and on-device: model staging and save (with staged option edits carried through), folds, legacy pill, submenu apply, runtime changes, summary pill updates, light and dark.

Built by Claude Fable 5 running in Claude Code.

Note

Consolidate model and thread settings into a single sheet in the mobile composer

• Replaces separate Model and Options menu pills in NewTaskDraftScreen and ThreadComposer with a single 'Thread settings' toolbar trigger that opens a unified ThreadSettingsSheet modal.
• The sheet groups models by provider with collapsible sections, hides legacy models by default, and stages model + option changes together until Save is tapped.
• A new threadSettingsSummaryLabel utility composes a compact summary string (model, options, runtime mode) displayed on the trigger pill.
• useThreadSettingsSheetPresentation coordinates keyboard dismissal on open and restores editor focus only when the sheet is closed via Save, not on dismiss.
• resolveDefaultableModelSelection prevents implicit defaults from resolving to legacy models; applyProviderOptionSelection replaces menu-event-string parsing with typed, validated selection updates.

^{Macroscope summarized a056b34.}

---

Note

Medium Risk
Touches core composer model/runtime selection and draft default resolution; staging and keyboard/focus timing add UX edge cases but changes are localized to mobile thread UI.

Overview
Replaces nested native model/configuration menus in the new-task draft and thread composer with one toolbar pill (summary like Model · Max · Auto) that opens a ThreadSettingsSheet modal.

The sheet adds a scrollable, provider-grouped model list (primary harnesses expanded, large catalogs foldable, legacy behind a toggle), staged model picks applied on Save/Done, and disclosure submenus for provider options and runtime. Open threads only see models from their current harness; new tasks still get all providers. Plan/interaction mode is no longer in the sheet—only reflected in the summary when already in plan mode (/plan unchanged).

Presentation plumbing: useThreadSettingsSheetPresentation dismisses the custom composer keyboard before showing the modal, keeps Android/iOS composer expanded while the sheet is open, and restores focus only after Save, not backdrop dismiss.

Selection defaults: resolveDefaultableModelSelection stops implicit project last-used defaults from landing on legacy models; draft picks stay explicit. setSelectedModelKey can apply model + options in one write when saving a staged change.

Cleanup: Removes buildModelMenuActions and menu-event provider option helpers in favor of direct selection APIs and tests for staging behavior.

^{Reviewed by Cursor Bugbot for commit a056b34. Bugbot is set up for automated code reviews on this repo. Configure here.}

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[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	11.4 KiB	11.3 KiB	−23 B (−0.2%)	15.1 KiB	✅
Codex	Thread snapshot wire	5.5 KiB	5.5 KiB	−9 B (−0.2%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	5.9 KiB	5.9 KiB	−14 B (−0.2%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	49.7 KiB	49.7 KiB	0 B (0.0%)	66.4 KiB	✅
Codex	Live turn messages	16	16	0 (0.0%)	21	✅
Claude	Total thread wire	11.3 KiB	11.3 KiB	−15 B (−0.1%)	15.1 KiB	✅
Claude	Thread snapshot wire	5.5 KiB	5.5 KiB	−3 B (−0.1%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	5.9 KiB	5.8 KiB	−12 B (−0.2%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	50.6 KiB	50.6 KiB	0 B (0.0%)	66.4 KiB	✅
Claude	Live turn messages	16	16	0 (0.0%)	21	✅

Baseline: 5661c61 · PR result: a056b34 · 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: 94.6 KiB
• Claude decoded thread snapshot: 95.4 KiB

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

[macroscopeapp]

Approvability

Verdict: Needs human review

This PR introduces a new settings sheet component with substantial new UI logic (~800+ lines), complex keyboard/focus coordination, and staged state management. The scope of new feature code warrants human review. Additionally, there is an unresolved finding about missing error handling for keyboard dismissal that could leave the sheet stuck.

^{You can customize Macroscope's approvability policy. Learn more.}

Dismissing prior approval to re-evaluate 0c9236e

[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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^{Reviewed by Cursor Bugbot for commit a056b34. Configure here.}

[cursor]

Sheet stuck after dismiss failure

High Severity

open only moves to visible inside KeyboardController.dismiss().then, with no rejection path. Elsewhere in mobile (ThreadDetailScreen) dismiss failures are handled with .catch. If dismiss rejects here, phase stays opening, isActiveRef stays true, the modal never appears, and later open calls no-op, so thread settings stay unavailable and the composer can remain expanded until remount.

 

^{Reviewed by Cursor Bugbot for commit a056b34. Configure here.}