major: kestrel is now a tak server (#6)

## Added

- CoT (Cursor on Target) server on port 8089 enabling ATAK/iTAK device connectivity
- Support for TAK stream protocol and traditional XML CoT messages
- TLS/SSL support with automatic fallback to plain TCP
- Username/password authentication for CoT connections
- Real-time device position tracking with TTL-based expiration (90s default)
- API endpoints: `/api/cot/config`, `/api/cot/server-package`, `/api/cot/truststore`, `/api/me/cot-password`
- TAK Server section in Settings with QR code for iTAK setup
- ATAK password management in Account page for OIDC users
- CoT device markers on map showing real-time positions
- Comprehensive documentation in `docs/` directory
- Environment variables: `COT_PORT`, `COT_TTL_MS`, `COT_REQUIRE_AUTH`, `COT_SSL_CERT`, `COT_SSL_KEY`, `COT_DEBUG`
- Dependencies: `fast-xml-parser`, `jszip`, `qrcode`

## Changed

- Authentication system supports CoT password management for OIDC users
- Database schema includes `cot_password_hash` field
- Test suite refactored to follow functional design principles

## Removed

- Consolidated utility modules: `authConfig.js`, `authSkipPaths.js`, `bootstrap.js`, `poiConstants.js`, `session.js`

## Security

- XML entity expansion protection in CoT parser
- Enhanced input validation and SQL injection prevention
- Authentication timeout to prevent hanging connections

## Breaking Changes

- Port 8089 must be exposed for CoT server. Update firewall rules and Docker/Kubernetes configurations.

## Migration Notes

- OIDC users must set ATAK password via Account settings before connecting
- Docker: expose port 8089 (`-p 8089:8089`)
- Kubernetes: update Helm values to expose port 8089

Co-authored-by: Madison Grubb <madison@elastiflow.com>
Reviewed-on: #6

test/unit/deviceUtils.spec.js

@@ -40,6 +40,13 @@ describe('deviceUtils', () => {
       expect(rowToDevice({ id: 'd1', name: 'x', device_type: 'feed', lat: Number.NaN, lng: 0, stream_url: '', source_type: 'mjpeg' })).toBe(null)
     })
 
+    it('coerces string lat/lng to numbers', () => {
+      const row = { id: 'd1', name: 'x', device_type: 'feed', lat: '37.5', lng: '-122.0', stream_url: '', source_type: 'mjpeg', config: null }
+      const out = rowToDevice(row)
+      expect(out?.lat).toBe(37.5)
+      expect(out?.lng).toBe(-122)
+    })
+
     it('coerces non-string vendor, stream_url, config to null or empty', () => {
       const row = {
         id: 'd1',
@@ -92,6 +99,21 @@ describe('deviceUtils', () => {
       }
       expect(sanitizeDeviceForResponse(device).streamUrl).toBe('')
     })
+
+    it('sanitizes stream_url to empty when not http(s)', () => {
+      const device = {
+        id: 'd1',
+        name: 'x',
+        device_type: 'feed',
+        vendor: null,
+        lat: 0,
+        lng: 0,
+        stream_url: 'ftp://example.com',
+        source_type: 'mjpeg',
+        config: null,
+      }
+      expect(sanitizeDeviceForResponse(device).streamUrl).toBe('')
+    })
   })
 
   describe('validateDeviceBody', () => {