Addresses "I arrange tiles but nothing changes":
- Demo devices have no hardware to echo a new state, so toggling looked dead.
DeviceCommandService now simulates that echo for demo devices (writes the new
state + broadcasts DeviceStateChanged) — the mock home is fully interactive
(handoff §13.2). Real devices are untouched; their own status message applies.
- Panel tiles show the entity name (device · room as sub) and drive the shared
TogglesEntities toggle; wire:loading guards double-taps.
- Drag-reorder now confirms with a "Layout saved" cue so it doesn't feel inert.
+1 test (demo toggle simulates echo; real device does not). Browser-verified:
tapping an "Aus" tile flips it to "An". Suite 52 green, 12/12 clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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