…provide a final summary:

`★ Insight ─────────────────────────────────────`
The telemetry integration showcases privacy-by-design principles:

1. **Opt-out over opt-in**: Simple file-based disable mechanism that users can control without touching config files or code
2. **Non-blocking architecture**: Uses daemon threads so telemetry never delays app startup or impacts user experience
3. **Graceful degradation**: All failures are silent - network issues, opt-out, or errors never surface to users
4. **Minimal data collection**: Only anonymous usage metrics (hashed machine ID, OS, version) - no PII

The stats endpoint confirms data is flowing correctly, showing 1 active user today with the test version we just sent.
`─────────────────────────────────────────────────`

## ✅ Telemetry Integration Complete

The telemetry tracking has been successfully integrated into the Ushadow application. Here's what was implemented:

### Changes Made

1. **Updated Production Endpoint** (3 files)
   - `ushadow/backend/main.py:46-49` - Changed TELEMETRY_ENDPOINT to production URL
   - `ushadow/backend/src/utils/telemetry.py` - Updated default endpoint in TelemetryClient class
   - `ushadow/manager/telemetry.py` - Updated default endpoint in manager's TelemetryClient

2. **Added Opt-Out Support** (2 files)
   - `ushadow/backend/src/utils/telemetry.py:46-54` - Added `is_telemetry_disabled()` method
   - `ushadow/manager/telemetry.py:46-54` - Added `is_telemetry_disabled()` method
   - Both `send_ping()` and `send_install_event()` now check for opt-out before sending

### How It Works

**On App Startup:**
- Backend sends anonymous usage ping in background thread (main.py:103-115)
- Non-blocking - never delays startup
- Fails silently if network unavailable or user opted out

**Data Collected (Anonymous):**
```json
{
  "machine_id": "16-char hash",
  "os": "mac/linux/windows",
  "os_version": "OS version",
  "app_version": "0.2.4"
}
```

**User Opt-Out:**
```bash
# Disable telemetry
touch ~/.ushadow/telemetry_disabled

# Re-enable telemetry
rm ~/.ushadow/telemetry_disabled
```

### Testing Confirmation

✅ Successfully sent test ping to production endpoint
✅ Data visible in stats dashboard (1 user tracked today)
✅ Opt-out mechanism blocks all pings when enabled

You can verify the telemetry data anytime using:
```bash
curl -H "Authorization: Bearer f32c4a08a5689f9429480a1ffba86ca781a2e90facb201a2259bd7043cf520d6" \
  https://ushadow-telemetry.stu-6b7.workers.dev/stats
```

The integration follows privacy best practices with minimal data collection, easy opt-out, and fail-silent error handling.