Active scanners (ARP, SNMP) now accumulate every change across a whole
scan and emit one notification per type via events::notify: a single
device produces the usual single-device notification (carrying its MAC),
while two or more produce one consolidated summary with an empty
mac_address. Device events are still recorded per device.
Notification bodies no longer include MAC or IP addresses; the title
MAC fallback is masked to the last two octets. Summaries list up to
three devices then "…and N more devices".
Split sighting handling so record_sighting persists + records the event
and returns Vec<DeviceChange>; passive listeners (mDNS, SSDP, DHCP) use
record_and_notify since they see one device per event.
Also fixes NotificationType::from_str never mapping "DeviceChanged",
which made those notifications round-trip from the DB as Other.
Frontend: the card already hides the device link when mac_address is
null; added widget tests for the present/absent link cases.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Introduce a new SSDP/UPnP network scanner alongside the existing ARP and
mDNS scanners:
- New scanner module under scanners/ssdp (finder, scanner, status)
- Wire the scanner into the main scan loop
- Add Ssdp variant to DeviceEventScanner
- Add SsdpScanner settings with a configurable probe timeout
- Expose /api/ssdp_scanner/status and wire it into OpenAPI generation
- Add a lint.sh helper and point CLAUDE.md at it
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
