feat(sdr): local receivers — browser RTL-SDR, Local ADS-B layer and decoder feeds (#732)

Adds a Local ADS-B layer fed by your own receivers: a browser WebUSB
RTL-SDR (with FM listening) and local 1090/978 MHz decoder feeds
(LOCAL_RECEIVER_FEEDS, local and private addresses only). Local aircraft
draw in magenta with class, silhouettes, 3D models, trails and a position
sanity filter; the click card names the band and input that heard them.

Builds on Sameh Khamis's SDR prototype and the initial GEV port by
Mazeyar Moeini Feizabadi (#134); the decoder-feed design follows the
notes on #57. Closes #57.

Co-authored-by: Sameh Khamis <[email protected]>
Co-authored-by: Mazeyar Moeini Feizabadi <[email protected]>

build/vite.js

@@ -9,10 +9,25 @@ export function createBrowserViteConfig({
   cesiumToken,
   host = 'localhost',
   port = 4173,
+  command,
 } = {}) {
   return {
     plugins: [cesium(), applicationHtmlPlugin(), ...plugins],
     ...(publicDir === undefined ? {} : { publicDir }),
+    // A production build must not clean the dependency cache a running dev
+    // server is still serving optimized module URLs from.
+    ...(command === 'build' ? { cacheDir: 'node_modules/.vite-build' } : {}),
+    optimizeDeps: {
+      // First reached through the SDR worker or a dynamic import. Pre-bundle
+      // them at startup so first use cannot invalidate already-transformed
+      // URLs with Vite's "Outdated Optimize Dep" 504 response.
+      include: [
+        '@jtarrio/signals/demod/demodulator.js',
+        '@jtarrio/signals/demod/modes.js',
+        '@jtarrio/webrtlsdr/rtlsdr.js',
+        'egm96-universal',
+      ],
+    },
     server: {
       host: host || 'localhost',
       port: parseInt(port, 10) || 4173,