Remove native macOS titlebar via decorations:false + titleBarStyle:overlay.
Add -webkit-app-region:drag to panel headers (Sidebar, NoteList, Editor tab
bar, Inspector) with no-drag on interactive elements. Sidebar header gets
78px left padding for macOS traffic light buttons.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Replace single selectedNote with tabs state in App (open/close/switch)
- Tab bar above editor: title + x close button, active tab highlighted
- Clicking note opens new tab or switches to existing
- Closing active tab switches to adjacent tab
- Fix race condition: editor re-creates when tab content loads async
- Add Playwright test verifying multi-tab behavior
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Install CM6 packages (state, view, lang-markdown, theme-one-dark, commands, language)
- Replace Editor placeholder with real CodeMirror 6 instance
- Add realistic markdown content to all mock entries in mock-tauri.ts
- Wire up note selection: clicking a note in NoteList loads its content in the editor
- Dark theme matching app colors, line numbers, active line highlighting, line wrapping
- Update NoteList with selected state styling
- Update Playwright screenshot test to capture editor with note selected
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
