On first launch, the cloud sidecar now:
1. Detects it's the cloud variant (DeviceManager import fails)
2. Auto-switches config from "local" to "byok" mode
3. Shows "Setup needed: Open Settings > Remote Transcription >
enter your Deepgram API key" as a friendly status message
4. Stays in READY state so the UI is fully accessible
The user can then open Settings, enter their Deepgram API key,
save, and start transcribing without needing to know about modes.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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