feat: state-based D-pad navigation, seek mode, subtitle picker, 20-agent audit fixes

- Replace broken Compose focus system with state-based selectedButton approach
- Add seek mode (DPAD_UP to enter, LEFT/RIGHT to seek, CENTER/DOWN to apply)
- Make SubtitlePickerOverlay state-based (DPAD UP/DOWN navigate, CENTER select)
- Fix 25 P0 crashes from 20-agent audit (SSRF, CancellationException, DTO defaults)
- Fix UX issues: animations, padding, TvErrorDisplay, navigation, finishAffinity
- Fix pause button: remove clickable, onKeyEvent only, repeatCount guard
- Add subtitle extraction: OpenSubtitles EN/ES, HI filtering, dedup
- Fix override accumulation: clearOverridesOfType before setting new tracks
- Disable tunneling for subtitle compatibility
- Performance: AutoHideHolder, @Immutable models, contentType
- Fix SearchScreen focus visibility: animated scale, white border, dimming
- Fix PlayerButton invisible text: white on HorrorGray bg
- Fix isLoading stuck in Home/Detail/SearchViewModel
- Fix VideoExtractor CancellationException rethrow, IMDB_ID_PATTERN 7+ digits

app/build.gradle.kts

@@ -16,6 +16,7 @@ android {
         versionCode = 1
         versionName = "1.0"
         buildConfigField("String", "APP_NAME", "\"HorrorTV\"")
+        buildConfigField("String", "OMDB_API_KEY", "\"${project.findProperty("OMDB_API_KEY") ?: "5854c81e"}\"")
     }
 
     signingConfigs {
@@ -75,7 +76,7 @@ android {
     kotlinOptions {
         jvmTarget = "17"
         freeCompilerArgs += listOf(
-            "-Xopt-in=kotlin.RequiresOptIn",
+            "-opt-in=kotlin.RequiresOptIn",
             "-Xjvm-default=all"
         )
     }
@@ -141,7 +142,12 @@ dependencies {
     implementation("androidx.media3:media3-ui:1.4.0")
     implementation("androidx.media3:media3-common:1.4.0")
     implementation("org.jsoup:jsoup:1.17.2")
-    
+
+    testImplementation("junit:junit:4.13.2")
+    testImplementation("io.mockk:mockk:1.13.9")
+    testImplementation("org.jetbrains.kotlinx:kotlinx-coroutines-test:1.7.3")
+    testImplementation("app.cash.turbine:turbine:1.0.0")
+
     debugImplementation(platform("androidx.compose:compose-bom:2024.10.01"))
     debugImplementation("androidx.compose.ui:ui-tooling")
     debugImplementation("androidx.compose.ui:ui-test-manifest")