Refactor: Stealth Theme Cleanup & UI Refinements

[norberia]

Summary

This PR refactors the "Stealth" theme and polishes several UI components to align with the VS Code-inspired aesthetic.

Changes

• Stealth Theme: Consolidated the .stealth block in globals.css, added --brand-claude, and updated --destructive to #F14C4C.
• Alert Dialog: Fixed missing border radius in alert-dialog-vscode.tsx by adding rounded-lg.
• Dropdown Menu: Optimized Tailwind classes to use v4 simplified syntax (e.g., min-w-32, data-disabled).
• Status Bar: Cleaned up styling (removed hover backgrounds).
• Toaster: Moved notifications to bottom-right.

Verification

• Verified theme colors and border radii manually.
• pnpm run build passed.

[github-actions]

✅ PR Check Results: Passed

Build Checks

Check	Status
Lint & Build	✅ Passed
Docker Build	✅ Passed

✨ Great work!

All checks passed successfully. Your PR is ready for review.

Details:

• ✅ Code quality verified (linting passed)
• ✅ Build successful
• ✅ Docker image build verified (linux/amd64)
  Commit: c27e374fcedd6e37424817d48800d49281cfb268
  Branch: refactor/stealth-theme-cleanup

🔗 View Details:

• Lint & Build
• Docker Build