- Add reactive $: block in FilesTab to auto-load files on selectedNode change
- Copy .btn/.btn-primary/.btn-sm styles into NotesTab.svelte and FilesTab.svelte (scoped CSS)
- Fix FilePreviewModal: render .md with MarkdownPreview, text files in <pre><code>, external open in footer
- Expand codeNames/textMimes in fileUtils.js to cover all text file types
- Add fallback text read for unknown file types in _openPreview
- Fix toggleMenu in FileTreeRow: position menu near button using getBoundingClientRect
- Add debug logs for file open flow and menu positioning
- Add tabindex+keydown to MarkdownPreview div (a11y partial fix)
Co-Authored-By: OWL (Hermes Agent) <hermes@nousresearch.com>