- Split template into separate files: template.html, template.css, template.js
- Add tree visualization sidebar for session navigation
- Fix HTML sanitization to prevent <style> tags breaking DOM
- Add DOM node caching for faster re-renders
- Fix tree indentation to match tree-selector.ts
- Add /share command to upload session as GitHub gist
- Support shittycodingagent.ai/session?{gistId} URLs
Closes#375, closes#380
- Add tree sidebar with search and filter (Default/All/Labels)
- Client-side markdown/syntax highlighting via vendored marked.js + highlight.js
- Base64 encode session data to avoid escaping issues
- Reuse theme.ts color tokens via getResolvedThemeColors()
- Sticky sidebar, responsive mobile layout with overlay
- Click tree node to scroll to message
- Keyboard shortcuts: Esc to reset, Ctrl/Cmd+F to search