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.

test/unit/cotDisplay.spec.js

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+import { describe, it, expect } from 'vitest'
+import {
+  cotAirIconKind,
+  cotCategory,
+  formatCotPopup,
+  getCotIconHtml,
+} from '../../app/utils/cotDisplay.js'
+
+const esc = s => String(s)
+
+describe('cotDisplay', () => {
+  it('detects helicopter from CoT type', () => {
+    expect(cotAirIconKind({ type: 'a-f-A-C-H' })).toBe('helicopter')
+    expect(cotAirIconKind({ type: 'a-f-A-C-F' })).toBe('fixedWing')
+  })
+
+  it('renders distinct air icon kinds', () => {
+    const plane = getCotIconHtml({ type: 'a-f-A-C-F', heading: 90 })
+    const heli = getCotIconHtml({ type: 'a-f-A-C-H', heading: 180 })
+    expect(plane.className).toBe('cot-entity-fixedWing')
+    expect(heli.className).toBe('cot-entity-helicopter')
+    expect(plane.html).toContain('rotate(90deg)')
+    expect(heli.html).toContain('rotate(180deg)')
+  })
+
+  it('formats rich ADS-B popup', () => {
+    const html = formatCotPopup({
+      source: 'adsb',
+      type: 'a-f-A-C-F',
+      label: 'UAL123',
+      icao: 'abc123',
+      originCountry: 'United States',
+      altitude: 10000,
+      speed: 200,
+      heading: 270,
+      verticalRate: 5,
+      squawk: '1200',
+    }, esc)
+    expect(html).toContain('UAL123')
+    expect(html).toContain('Aircraft')
+    expect(html).toContain('ICAO ABC123')
+    expect(html).toContain('United States')
+    expect(html).toContain('ft')
+    expect(html).toContain('kt')
+    expect(html).toContain('270°')
+    expect(html).toContain('Squawk 1200')
+  })
+
+  it('formats vessel popup with MMSI', () => {
+    const html = formatCotPopup({
+      source: 'ais',
+      type: 'a-f-S-C',
+      label: 'TEST SHIP',
+      id: 'MMSI.366123456',
+      speed: 12,
+      heading: 90,
+    }, esc)
+    expect(html).toContain('Vessel')
+    expect(html).toContain('MMSI 366123456')
+  })
+
+  it('formats team popup', () => {
+    expect(cotCategory('a-f-G-U-C')).toBe('ground')
+    const html = formatCotPopup({ type: 'a-f-G-U-C', label: 'Alpha 1' }, esc)
+    expect(html).toContain('Team')
+    expect(html).toContain('Alpha 1')
+  })
+})