- Add delete notebook handler with ownership check and CASCADE delete
- Rename "Create Share Link" to "Share"
- Fix action button heights: use inline-flex + align-items for
consistent sizing across <a> and <button> elements
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- HTML templates: layout, login, notebook list, notebook view, page viewer
- Web server with chi router, embedded templates via //go:embed
- Login/logout flow with session cookies
- Notebook list, page grid with SVG thumbnails, page viewer
- Share link views (same templates, no auth chrome)
- Server command wired to start gRPC + REST + web servers concurrently
- Graceful shutdown on SIGINT/SIGTERM
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
