Add COLLATE NOCASE on every text content column (names, owners, vendors,
device types, MAC addresses, notification titles/bodies/types, event
types) so DESC-by-name lists no longer order "iPad" before "Lutron".
Normalize MAC addresses to lowercase at the DB layer so the now
case-insensitive primary key cannot accept duplicate-looking rows.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Records a DeviceEvent row on every scan: NewDevice when a device is first
seen, DeviceSeen on subsequent scans. Exposes GET /api/devices/{mac}/events
with pagination, ordered by date descending.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
