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

server/api/live/[id].delete.js

@@ -1,35 +1,38 @@
 import { requireAuth } from '../../utils/authHelpers.js'
 import { getLiveSession, deleteLiveSession } from '../../utils/liveSessions.js'
 import { closeRouter, getProducer, getTransport } from '../../utils/mediasoup.js'
+import { acquire } from '../../utils/asyncLock.js'
 
 export default defineEventHandler(async (event) => {
   const user = requireAuth(event)
   const id = event.context.params?.id
   if (!id) throw createError({ statusCode: 400, message: 'id required' })
 
-  const session = getLiveSession(id)
-  if (!session) throw createError({ statusCode: 404, message: 'Live session not found' })
-  if (session.userId !== user.id) throw createError({ statusCode: 403, message: 'Forbidden' })
+  return await acquire(`session-delete-${id}`, async () => {
+    const session = getLiveSession(id)
+    if (!session) throw createError({ statusCode: 404, message: 'Live session not found' })
+    if (session.userId !== user.id) throw createError({ statusCode: 403, message: 'Forbidden' })
 
-  // Clean up producer if it exists
-  if (session.producerId) {
-    const producer = getProducer(session.producerId)
-    if (producer) {
-      producer.close()
+    // Clean up producer if it exists
+    if (session.producerId) {
+      const producer = getProducer(session.producerId)
+      if (producer) {
+        producer.close()
+      }
     }
-  }
 
-  // Clean up transport if it exists
-  if (session.transportId) {
-    const transport = getTransport(session.transportId)
-    if (transport) {
-      transport.close()
+    // Clean up transport if it exists
+    if (session.transportId) {
+      const transport = getTransport(session.transportId)
+      if (transport) {
+        transport.close()
+      }
     }
-  }
 
-  // Clean up router
-  await closeRouter(id)
+    // Clean up router
+    await closeRouter(id)
 
-  deleteLiveSession(id)
-  return { ok: true }
+    await deleteLiveSession(id)
+    return { ok: true }
+  })
 })