feat(web): port compact workspace menu from ov2

[maria-rcks]

ports ov2's workspace and version control popup into main's chat header, using a 256px width, 28px rows, 12px text, 8px section padding, and 2px row gaps. existing branch, editor, script, and git handlers remain in use, and open dialogs survive closing the menu or resizing.

verified in the real app: workspace mode changes, a provider turn, adding/running/editing a project script, nested editor/git menus, escape dismissal, and changes opening the diff panel. inspected desktop and phone widths in dark and light themes. blacksmith web typecheck, scoped lint, and 161 existing tests passed; the spacing follow-up passed web typecheck, scoped lint, and 78 existing tests.

model: gpt-6. harness: codex.

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR introduces a substantial workspace and version-control menu that changes the default chat-header experience and touches multiple interactive controls and lifecycle paths. Its cross-component user-facing impact is broader than a bounded UI adjustment.

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ℹ️ Recent review info

⚙️ Run configuration

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Review profile: CHILL

Plan: Advanced

Run ID: 057841b8-b995-49cb-a5d0-14b846e4b6a6

📥 Commits

Reviewing files that changed from the base of the PR and between 78d3bb5 and 8bdb838.

📒 Files selected for processing (2)

• apps/web/src/components/BranchToolbar.tsx
• apps/web/src/components/chat/ChatHeader.tsx

🚧 Files skipped from review as they are similar to previous changes (2)

• apps/web/src/components/BranchToolbar.tsx
• apps/web/src/components/chat/ChatHeader.tsx

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📝 Walkthrough

Walkthrough

The PR adds panel layouts for branch, environment, script, editor, and Git controls. Chat headers now group these controls in workspace and version-control sections within a persistent popover. Toolbar layouts remain the default.

Changes

Thread details panel controls

Layer / File(s)	Summary
Panel style and popup foundation apps/web/src/components/chat/threadDetailsPanelStyles.ts, apps/web/src/components/ui/popover.tsx	Adds shared panel control classes and a keepMounted option for PopoverPopup.
Branch and environment panel variants apps/web/src/components/BranchToolbar.tsx, apps/web/src/components/BranchToolbarBranchSelector.tsx, apps/web/src/components/BranchToolbarEnvModeSelector.tsx, apps/web/src/components/BranchToolbarEnvironmentSelector.tsx	Adds panel layout sections and panel-specific presentation for branch and environment controls.
Workspace and Git action panel variants apps/web/src/components/chat/OpenInPicker.tsx, apps/web/src/components/ProjectScriptsControl.tsx, apps/web/src/components/GitActionsControl.tsx	Adds panel action groups, anchored popups, panel styling, and a Git “Changes” action.
Chat header panel integration apps/web/src/components/ChatView.tsx, apps/web/src/components/chat/ChatHeader.tsx	Passes consolidated branch-toolbar props and replaces responsive inline/menu switching with workspace and version-control sections in a persistent popover.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Feature

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 8 functions across 11 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
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.
Title check	✅ Passed	The title clearly identifies the main change: porting the compact workspace menu from OV2 into the web application.
Description check	✅ Passed	The description explains the workspace and version control popup, documents UI dimensions and behavior, includes screenshots and a recording, and reports verification and test results. It does not use…

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