fix(web): show provider skills in slash menu

[delusionofgrandeur]

Summary

• include provider skills when the composer slash-command menu opens
• keep selection behavior inserting the existing $skill token format
• add browser coverage for selecting a Codex skill from /

Scope

This partially addresses #2637 by surfacing detected Codex/provider skills from the / menu. It does not add Codex CLI-only slash commands such as /help or /status, which do not appear to be exposed through the current provider status shape.

Verification

px --yes bun@1.3.11 run fmt

px --yes bun@1.3.11 run --bun lint (passes with pre-existing warnings)

px --yes bun@1.3.11 run --bun typecheck

px --yes bun@1.3.11 run test:browser -- src/components/ChatView.browser.tsx from �pps/web (76 passed)

px --yes bun@1.3.11 run --bun test -- src/components/chat/MessagesTimeline.test.tsx from �pps/web (6 passed)

Full-suite note

px --yes bun@1.3.11 run --bun test hit unrelated 5s timeout flakes locally under load. First run timed out in @t3tools/oxlint-plugin-t3code; second run timed out in effect-acp; --concurrency=1 later timed out in MessagesTimeline.test.tsx, which passed in isolation.

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Note

Low Risk
Low risk UI/menu behavior change limited to chat composer command suggestions and grouping; main risk is minor UX regressions in command ordering/filtering.

Overview
The chat composer / menu now also surfaces provider skills (in addition to built-in and provider slash commands), using provider-skill search and keeping insertion behavior as the existing $skill-name token.

The command menu grouping logic is updated to include a Skills section when opened via /, and a browser test is added to verify selecting a skill from the slash menu inserts the expected token.

^{Reviewed by Cursor Bugbot for commit 847b12a. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Show provider skills in the slash-command menu of ChatComposer

• Adds provider skills to the slash-command (/) menu in ChatComposer.tsx, both with and without a search query, alongside existing built-in and provider slash-command items.
• Introduces a toSkillComposerCommandItem helper to build standardized ComposerCommandItem objects for provider skills.
• Updates ComposerCommandMenu.tsx to render a separate "Skills" group when slash-command grouping is active and skill items are present.
• Adds a browser test in ChatView.browser.tsx verifying that typing / surfaces a provider skill and inserts the correct token into the composer.

^{Macroscope summarized 847b12a.}

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[cursor]

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

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit 2f1ba85. Configure here.}

[macroscopeapp]

Approvability

Verdict: Approved

This is a low-risk UI enhancement that surfaces existing provider skills in the slash command menu. The changes are self-contained to the chat composer, include a helper function extraction (refactor), and add test coverage for the new behavior.

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

Dismissing prior approval to re-evaluate 847b12a