Open the asset browser in a floating VS Code window

[Frotty]

Opening the asset browser now moves it into a real floating VS Code window. The browser fills that window instead of drawing a centered popup frame, while retaining the larger thumbnails and existing action icons. Restored panels keep their saved placement; if detaching fails, the browser remains available in its editor tab.

Validation:

• TypeScript, ESLint, and webpack build passed.
• All 120 webview tests passed.
• Real VS Code CodeLens test passed, including the separate-window assertion.
• The fast Node suite reached the webview harness but is blocked by a missing worktree-relative war3-model shader source; the preceding harnesses passed.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-08T07:22:30.948418Z	5977790	PR opened

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