Sergei 7149d25ba4 Add BLE fix for saved WiFi credentials + build version indicator
BLE Fix:
- Check if sensor is already connected to target WiFi before sending credentials
- Handle W|fail when sensor uses saved credentials instead of new password
- Return success if sensor is connected to target network even after W|fail

Build Version Indicator:
- Add visible version badge on Dashboard screen (v2.1.0 • 2026-01-27 17:05)
- Green text on dark background in bottom-right corner
- Helps verify which build is running on device

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2026-01-27 16:55:02 -08:00
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