Docs-only release (no code change).
Added
- README Real-world use GIF — the driver printing real labels inside a production app.
- README Troubleshooting section (macOS blank prints →
PACE_MS, model-mismatch errors, dense/BLE tuning, Web Bluetooth support,DEBUG).
Published so npmjs.com carries these docs (and the demo/real GIFs via raw links).
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