Segunda revisión completa: fixes críticos aplicados

- StrictMode solo en DEBUG mode
- ExecutorService con shutdown apropiado
- DNSSetter NetworkCallback unregister
- DiffUtil en ChannelAdapter y EventAdapter
- minifyEnabled=true y shrinkResources=true para release
- Validación en constructores (StreamChannel)
- Strings externalizadas
- ProGuard rules completas
- Testing dependencies agregadas
- Removed Firebase (uso personal)
- JavaDoc documentación agregada
- Android SDK configurado localmente

Compilado exitosamente: StreamPlayer v9.4.2 debug APK (11MB)

dashboard/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "streamplayer-device-dashboard",
+  "version": "1.0.0",
+  "description": "Dashboard ligero para controlar instalaciones del APK StreamPlayer",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "nodemon server.js"
+  },
+  "author": "StreamPlayer",
+  "license": "MIT",
+  "dependencies": {
+    "axios": "^1.6.7",
+    "dotenv": "^16.4.5",
+    "cors": "^2.8.5",
+    "express": "^4.18.2",
+    "geoip-lite": "^1.4.6",
+    "morgan": "^1.10.0",
+    "request-ip": "^3.3.0"
+  },
+  "devDependencies": {
+    "nodemon": "^3.0.1"
+  }
+}