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.

scripts/import-alpr.js

@@ -0,0 +1,17 @@
+#!/usr/bin/env node
+import { getDb, closeDb } from '../server/utils/db.js'
+import { importAllAlprNodes } from '../server/utils/alpr.js'
+
+try {
+  const db = await getDb()
+  console.log('[import-alpr] Fetching ALPR nodes from Overpass…')
+  const count = await importAllAlprNodes(db)
+  console.log(`[import-alpr] Cached ${count} nodes in SQLite.`)
+}
+catch (error) {
+  console.error('[import-alpr] Failed:', error?.message || error)
+  process.exitCode = 1
+}
+finally {
+  closeDb()
+}