App streaming pipeline, dashboard server status, account enable/disable, game-linked plans

- Add C++ native streaming engine (RTMP client, EGL context, streaming engine, JNI bridge)
- Add pre-built arm64-v8a libs (librtmp, libssl, libcrypto, libz) and headers
- Add Kotlin streaming layer (NativeStreamingEngine, StreamingManager, StreamingStats)
- Add AIDL streaming interface (ILckStreamingService, ILckStreamingCallback, StreamingConfig)
- Add LckStreamingServiceImpl with BIND_STREAMING action support
- Add APP_STREAMING execution mode with auto-start/stop on plan lifecycle
- SDK: add bindStreaming(), submitVideoFrame(), submitAudioFrame() to LckControlClient
- Dashboard: replace linked accounts with server status card, move health polling from nav
- Remove health check dot overlay from Dashboard nav icon
- Accounts: add enable/disable toggle per account (persists locally, excluded from default plans)
- Plans: add gameId field linked to game package ID, resolved from ClientTracker for default plans
- Service: pass executionMode+gameId through createStreamPlan, filter enabled accounts in createDefaultPlan
- Room DB migration 4→5: add isEnabled column to linked_accounts, gameId column to stream_plans
- Add docs (hub vs control comparison)

app/build.gradle.kts

@@ -60,9 +60,20 @@ android {
 
         buildConfigField("String", "DISPLAY_VERSION", "\"${gitDisplayVersion()}\"")
 
+        ndk {
+            abiFilters += listOf("arm64-v8a")
+        }
+
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    externalNativeBuild {
+        cmake {
+            path = file("src/main/cpp/CMakeLists.txt")
+            version = "3.22.1"
+        }
+    }
+
     buildTypes {
         debug {
             signingConfig = signingConfigs.getByName("release")