## capture service
- capture-manager.js: add 'deltacast' source_type to _buildInputArgs.
Uses 'deltacast://<index>' with ffmpeg deltacast demuxer when
/dev/deltacast<N> exists; falls back to lavfi testsrc2 + sine test card
(matching deltacast-sdi-recorder standalone app) when hardware absent.
- routes/capture.js: add GET /devices/deltacast endpoint (enumerates
/dev/deltacast* + DELTACAST_PORT_COUNT env fallback). Extend /probe to
handle source_type=deltacast.
## node-agent
- detectHardware(): add 'deltacast' array to capabilities payload.
Enumerates /dev/deltacast* nodes; falls back to DELTACAST_PORT_COUNT env.
Adds DELTACAST_MODEL env support. Logs dc= count in heartbeat line.
- sidecar /start: bind /dev/deltacast* device nodes into capture containers
when sourceType='deltacast'.
## mam-api
- cluster.js: add GET /cluster/devices/deltacast and
GET /cluster/devices/deltacast/signal endpoints — same shape as
blackmagic equivalents for UI parity.
- recorders.js /start: pass DELTACAST_PORT_COUNT env to capture container;
bind /dev/deltacast* device nodes on local spawn.
- migration 024: ALTER TYPE source_type ADD VALUE 'deltacast' (idempotent).
- schema.sql: add 'deltacast' to source_type ENUM for fresh installs.
## web-ui
- modal-new-recorder.jsx: add 'Deltacast' source type card; fetch
/cluster/devices/deltacast on selection; port picker with TEST CARD
badge when hardware absent; falls through to manual index entry if
no devices detected.
ZGaetano
888ca65045