fix(web): show Stop button while input is pending

[ipanasenko]

A running turn that asks for user input replaces the normal composer actions, which hides the Stop control even though settling instructs the user to interrupt first:

Bringing the Stop button back:

Mobile app already shows Stop button in this case:

Reuse the existing Stop generation control beside the pending question actions while the turn is running. Size it to match the adjacent small action on desktop while preserving the existing standalone Stop size. Add focused render coverage for visibility and both size contexts.

Model: GPT-5.6 Sol
Harness: Codex in T3 Code

Note

Show Stop generation button in composer when input is pending and turn is running

Previously, the Stop generation button was only shown in the standalone (no pending action) state. Now, when a pending action is present and isRunning is true, the Stop button also appears alongside the pending action controls.

• Extracts a renderStopGenerationButton helper in ComposerPrimaryActions.tsx that renders two size variants: smaller (size-8 sm:size-7) inside pending actions and larger (size-8 sm:h-8 sm:w-8) standalone.
• Adds tests in ComposerPrimaryActions.test.ts covering Stop button visibility under running/non-running states and size class differences.
• Behavioral Change: the Stop button now renders in the pending action branch when isRunning is true, which is a new UI state.

^{Macroscope summarized 1365636.}

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Note

Low Risk
UI-only composer action visibility and sizing with no auth, data, or API changes; behavior is covered by focused tests.

Overview
Stop generation is available again when a turn is still running but the composer is showing pending question actions (Next/Submit), matching mobile behavior and guidance to interrupt before settling.

ComposerPrimaryActions pulls the stop control into renderStopGenerationButton, renders it beside pending actions when isRunning, and uses sm:size-7 there so it lines up with adjacent small buttons while the standalone stop keeps sm:h-8 sm:w-8.

Tests use static markup to assert stop visibility with/without a running turn and the two size class paths.

^{Reviewed by Cursor Bugbot for commit 1365636. Bugbot is set up for automated code reviews on this repo. Configure here.}

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[macroscopeapp]

Approvability

Verdict: Approved 1365636

This is a focused UI bug fix that shows the Stop generation button when input is pending and the system is running. The change refactors existing button code into a helper and adds conditional rendering, with comprehensive test coverage. Low-risk, self-contained change.

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

Dismissing prior approval to re-evaluate 1365636