Add ADS-B, AIS, and ALPR map layers with live CoT streaming.

Ingest aircraft and vessel tracks via OSINT feeds and tactical CoT, expose viewport-filtered SSE to the map, and add an OSM ALPR layer with tiled caching and performant marker sync.

server/plugins/cotLifecycle.js

@@ -0,0 +1,32 @@
+import { registerCleanup } from '../utils/shutdown.js'
+import { onCotChange, pruneStaleEntities } from '../utils/cotStore.js'
+import { getCotSnapshotOpts } from '../utils/cotSnapshot.js'
+import {
+  notifySubscribersForEntity,
+  notifySubscribersRemove,
+} from '../utils/cotSubscribers.js'
+import { COT_PRUNE_INTERVAL_MS } from '../utils/constants.js'
+
+let pruneTimer = null
+let offChange = () => {}
+
+export default defineNitroPlugin(() => {
+  offChange = onCotChange((changeEvent, payload) => {
+    if (changeEvent === 'update' && payload?.entity) {
+      notifySubscribersForEntity('update', { entity: payload.entity }, payload.entity).catch(() => {})
+    }
+    else if (changeEvent === 'remove' && payload?.id) {
+      notifySubscribersRemove(payload.id).catch(() => {})
+    }
+  })
+
+  pruneTimer = setInterval(() => {
+    pruneStaleEntities(getCotSnapshotOpts()).catch(() => {})
+  }, COT_PRUNE_INTERVAL_MS)
+
+  registerCleanup(() => {
+    offChange()
+    if (pruneTimer) clearInterval(pruneTimer)
+    pruneTimer = null
+  })
+})