- Device model: add device_type column (String 50, nullable)
- Device add/edit: type select with presets + custom entry
- Device detail: show type in info card; new Edit Device form
- Device list: Type column + client-side filter bar (type + text search)
- Mobile: card-style responsive tables on dashboard and device list,
form-grid-2col collapse, larger tap targets, stacked form-actions,
column picker viewport fix, filter bar full-width controls
- Assign page: larger radio touch targets (min-height 44px)
- 3 new acceptance tests for device_type (45 total)
iterminate
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