Previously every reload-bundle killed and restarted all pipelines.
Now:
- WARM_CAMERAS map: camera_id → (pipeline, paintable)
- On reload: stop only pipelines for cameras no longer needed
- Needed = cells with content_type=camera + layout.preload_camera_ids
- Reuse existing pipeline+paintable, attach to new Picture widget
- Preloaded cameras keep decoding even when not visible
Achieves the "zero perceived latency" layout swap goal from CLAUDE.md
when cameras overlap between layouts.
Rust kiosk:
- web cells now use webkit6 WebView (load_uri)
- html cells use WebView.load_html (full HTML rendering)
- query_displays() reads /sys/class/drm/ for connected HDMI/DP outputs
- Heartbeat reports display geometry every 60s
Server:
- /api/kiosk/heartbeat accepts displays array
- Syncs kiosk-reported displays to display records
- Updates dimensions when changed, creates new displays for new ports
Server side:
- service-coordinator-ws: full WS implementation using ws package
- Auth via ?token=<kiosk_key> query param
- Coordinator registry for cross-plugin notification
- Admin mutations call notifyKiosks() → server pushes reload-bundle
- 30s ping/pong heartbeat
Kiosk side:
- Rust ws_client with tokio runtime + tokio-tungstenite
- Auto-reconnect with exponential backoff (1s → 60s cap)
- On reload-bundle: re-fetches bundle, re-renders layout
- Pong replies to server pings
Also fix: auto-suffix kiosk name on UNIQUE collision (re-pair with
same hostname no longer fails).
- Cells own position directly (row/col/row_span/col_span)
- Drop regions JSON from layouts (cells ARE the regions)
- Drop is_default from layouts (display.default_layout_id owns)
- Drop grid_cols/grid_rows from layouts (computed from cells)
- Layout new form: name, description, priority, resets_idle_timer only
- Layout edit: visual grid builder, + buttons on cell edges,
click cell to assign content
- Bundle cells now carry position directly
- Rust kiosk attaches widgets using cell position
- Migration v0.4: backfills cell positions from old region map
- Eliminated layout_templates as separate entity — regions/grid now
live directly on layouts
- Displays created from kiosk pairing (not standalone), each display
has kiosk_id FK
- Removed Templates from sidebar nav and all template routes/pages
- Layout creation uses preset buttons (fullscreen, 2x2, 1+3, 3x3)
that set regions directly on the layout
- Setup no longer creates default display/layout (deferred to pairing)
- Pairing creates HDMI-0 display for new kiosk
- Bundle reads regions from layout directly, no template lookup
- Rust kiosk updated to match new bundle format
- DB migration adds regions/grid_cols/grid_rows to layouts, kiosk_id
to displays, copies existing template data
