Demo configurable plus button actions on macOS 15 runner

[lawrencecchen]

Addresses #3348

Generated by cmux-loader.

Recorded videos:

• repro: .runner/videos/repro.mov (ok)

Run artifacts: https://github.com/manaflow-ai/cmux-loader/actions/runs/25157034841

Codex final message:

Done.

• Task source used: Make plus button actions configurable #3348
• Checked-out ref: loader/recording-plus-button-actions-demo-macos15
• Reload tag used: pbtn15
• App path used: /Users/runner/Library/Developer/Xcode/DerivedData/cmux-pbtn15/Build/Products/Debug/cmux DEV pbtn15.app
• Output config file written: /Users/runner/.config/cmux/cmux.json (exact task payload).

Recording result:

• Video artifact: repro
• ./.cmux-loader/record-video stop repro completed with status=ok.

What I verified via GUI:

• Right-click menu on titlebar plus button appeared in configured order: New Terminal, separator, Demo Shell, Demo Workspace.
• Clicking Demo Shell executed the configured command path (right-click action path demonstrated).
• Left-click on titlebar plus opened a browser surface/tab as configured with cmux.newBrowser.

No blockers encountered.

Report saved at: docs/recordings/plus-button-actions-demo-macos15.md.

---

Summary by cubic

Adds a recorded demo and short report verifying configurable titlebar plus-button actions on macOS 15. Confirms right‑click menu order (New Terminal, separator, Demo Shell, Demo Workspace) and that left‑click opens a browser tab via cmux.newBrowser; details and video link are in docs/recordings/plus-button-actions-demo-macos15.md.

^{Written for commit b632998. Summary will update on new commits. Review in cubic}

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[greptile-apps]

Greptile Summary

This PR adds a single documentation file recording the successful demo of configurable plus-button actions on a macOS 15 runner. Both left-click (browser surface) and right-click menu (configured order with separator) behaviors were verified and captured on video with no blockers.

Confidence Score: 5/5

Documentation-only change; safe to merge.

Only a single markdown recording report is added. There are no code changes, no logic, and no security surface. The sole finding is a minor wording inconsistency (P2) between two sections of the same document.

No files require special attention.

Important Files Changed

Filename	Overview
docs/recordings/plus-button-actions-demo-macos15.md	New recording report documenting the plus-button-actions demo on macOS 15; minor inconsistency between step 6 (no separator) and the Result section (separator listed).

Sequence Diagram

sequenceDiagram
    participant Loader as cmux-loader (CI)
    participant App as cmux DEV pbtn15.app
    participant Config as cmux.json

    Loader->>Config: Write plus-button config (newBrowser left-click, Demo Shell / Demo Workspace right-click)
    Loader->>App: reload.sh --tag pbtn15 --launch
    Loader->>App: approve-computer-use-app
    Loader->>App: set-app-window-frame
    Loader->>Loader: record-video start repro
    Loader->>App: Right-click titlebar plus button
    App-->>Loader: Menu: New Terminal | separator | Demo Shell | Demo Workspace
    Loader->>App: Click Demo Shell
    App-->>Loader: Shell command executes
    Loader->>App: Left-click titlebar plus button
    App-->>Loader: Browser surface opens (cmux.newBrowser)
    Loader->>Loader: record-video stop repro

Loading

_{Reviews (1): Last reviewed commit: "Address https://github.com/manaflow-ai/c..." | Re-trigger Greptile}

[greptile-apps]

Separator missing in step-by-step description

The "Steps attempted" section (line 16) lists the confirmed right-click menu order as New Terminal, Demo Shell, Demo Workspace, omitting the separator. The "Result" section (line 23) correctly lists it as New Terminal, separator, Demo Shell, Demo Workspace, matching the PR description. The two sections of the same document are inconsistent.

Suggested change

	- Confirmed menu order was `New Terminal`, `Demo Shell`, `Demo Workspace`.
	- Confirmed menu order was `New Terminal`, separator, `Demo Shell`, `Demo Workspace`.