feat(ui): consolidate document actions and release notes

[ThisIs-Developer]

What changed

• Consolidated document actions into bordered icon controls with dropdown arrows where menus are available.
• Ordered document actions as View, Sync, New, Copy, Export, Share, Live Share, and Review, followed by application preferences.
• Reorganized the Markdown formatting toolbar into History, Text formatting, Paragraph formatting, Content insertion, Technical content, Additional insertion, and Workspace actions.
• Updated New/Import to use the Plus icon and Copy to use the Clipboard icon.
• Refined the larger theme and private-mode switches while preserving the requested active colors and icon behavior.
• Treats Release Notes as an application-owned reader surface instead of a workspace document.
• Keeps desktop and mobile document toolbars visible for a stable layout, but disables document-only controls while Release Notes are active.
• Removes the three-dot menu beside the Release Notes title while retaining the dedicated Close button.
• Applies consistent disabled opacity and native disabled semantics to view-only formatting controls.
• Makes disabled Sync visually neutral in Release Notes and view-only modes.
• Keeps New, Export, and Settings toggles active for the full time their dropdown is expanded.
• Adds directional dropdown motion: a responsive 180 ms entrance and a faster 120 ms exit using opacity, translate, and scale.
• Keeps closing menus positioned and non-interactive until the exit animation finishes, including nested and mobile language menus.
• Disables dropdown motion when the user prefers reduced motion.
• Mirrored the UI behavior into the desktop resources.

Why

The toolbar now uses explicit, consistent interaction states and spatially coherent menu motion. Bootstrap previously removed menu positioning as soon as a dropdown closed, which made the exit transition snap or disappear. The new lifecycle keeps the surface mounted only for the short exit phase, while preserving keyboard dismissal, focus behavior, and immediate action execution.

Testing

• npm run check:static
• 27 Chromium Playwright scenarios covering desktop header menus, nested/mobile language menus, keyboard dismissal, Release Notes, responsive storage, and toolbar behavior.
• Focused opening/closing and reduced-motion scenarios repeated twice in isolation.
• Assertions verify the closing phase remains positioned, visible to the animation system, and non-interactive before Bootstrap completes dismissal.

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
markdown-viwer	Ready	Preview	Aug 14, 2026 11:53am

[cloudflare-workers-and-pages]

Deploying markdownviewer with    Cloudflare Pages

Latest commit:	e720db7
Status:	✅  Deploy successful!
Preview URL:	https://7e9520d0.markdownviewer.pages.dev
Branch Preview URL:	https://agent-consolidate-icon-toolb.markdownviewer.pages.dev

View logs

[ThisIs-Developer]

@copilot resolve the merge conflicts in this pull request

[Copilot]

@copilot resolve the merge conflicts in this pull request

Resolved by merging origin/main into this branch and fixing the conflict in tests/e2e/tab-split-sidebar-update.spec.js in commit 8befe8e.