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xarmian
2ec6c954e6
`fetchAttachmentMetadata` collapsed 404, every other non-2xx and network throws into a single `null` — and cached it. Two consequences: nothing could treat "gone" as authoritative (so editor undo resurrected deleted attachments as live-looking nodes), and a one-off blip was sticky for the page's lifetime. It now returns a discriminated result: `ok` carries mime/size, `missing` is the authoritative 404, `transient` is everything else. `ok` and `missing` stay cached; `transient` is evicted the moment it settles, so a retry re-issues the HEAD while concurrent callers still share one in-flight request (PLAN-2392 DR-17). Both NodeView consumers act on the split. The chip latches the missing/deleted treatment on `missing` and leaves the filename-guess icon alone on `transient`. The image NodeView probes on load failure — an <img> error event carries no status code, so a deleted row and a network blip are indistinguishable there — and only a 404 latches the permanent placeholder; the toolbar's MIME probe latches too, since it may beat the image to the answer. ItemTimeline drops its probed-mark on `transient` so a blip doesn't permanently strand an entry's metadata. Adds `canOpenInViewer` (DR-16: exact five-type raster allowlist, not an `image/` prefix — SVG carries active content and TIFF/HEIC may not decode) and `canBrowserPreview` (DR-5: that set plus PDF and text/plain) next to `isImage`, which survives unchanged as the general picture predicate. Claude-Session: https://claude.ai/code/session_01LmbFxQFDjcYKBLcTnor6DC
Pad Web UI
SvelteKit 2 + Svelte 5 frontend for Pad, compiled to static files and embedded into the Go binary.
Development
npm install
npm run dev # Dev server at localhost:5173 (proxies API to localhost:7777)
npm run build # Production build to build/
npm run check # Type checking with svelte-check
When developing, run the Go backend separately with make dev from the project root.
Building for Production
Do not build in isolation. Always use make build from the project root — this builds the web frontend, then compiles the Go binary with the build output embedded via //go:embed.
Stack
- Svelte 5 with runes (
$state,$derived,$effect) - SvelteKit 2 with
adapter-static(SPA mode) - Tiptap block editor with markdown round-trip
- svelte-dnd-action for drag-and-drop in board/list views
- SSE for real-time updates
- TypeScript throughout
Structure
src/
routes/ SvelteKit pages
+layout.svelte App shell (sidebar + main)
+page.svelte Landing/redirect
[workspace]/
+page.svelte Dashboard (collections, phases, activity)
+layout.svelte SSE connection per workspace
[collection]/
+page.svelte Collection view (board/list)
[collection]/[item]/
+page.svelte Item detail + editor
conventions/ Purpose-built conventions page
playbooks/ Purpose-built playbooks page
settings/ Workspace settings
lib/
api/client.ts HTTP API client
components/
layout/ Sidebar, navigation
editor/ Tiptap editor, raw markdown editor
fields/ FieldEditor, relation picker
items/ ItemCard, ItemDetail
collections/ BoardView, ListView
common/ StatusBadge, badges, modals
search/ CommandPalette
activity/ ActivityFeed
stores/ Svelte 5 reactive stores
workspace.svelte.ts Workspace state
collections.svelte.ts Collection + item state
ui.svelte.ts Sidebar, mobile state
types/index.ts TypeScript types and constants
app.css Global styles and design tokens