v0.1.0-X (vc=12): revert to NewPipeExtractor for working playback

Phase U (rustypipe Rust extractor) rolled back. Symptom: black screen
on play, root cause: rustypipe 0.11.4's JS deobfuscator can't parse
current YouTube player.js (YT changed the obfuscation pattern, no
upstream rustypipe release since June 2025). Switching clients
(Web → TV → Android/Ios) didn't help — the deobfuscator init fires
universally.

Kept in place for the future:
- rust/strawcore/ Cargo workspace + UniFFI scaffolding
- build-host runtime install (rustup + 4 Android targets +
  cargo-ndk + NDK r27c)
- The U-2..U-5 commits in history (re-runnable when rustypipe is
  fixed or we fork it).

Restored from commit 9c4b3f831 (v0.1.0-T):
- NewPipe.init() in StrawApp.onCreate
- libs.newpipe.extractor + libs.squareup.okhttp deps
- NewPipeDownloader.kt + Thumbnails.kt
- ViewModels (Search/VideoDetail/Player/Channel/SubscriptionFeed) on
  NewPipeExtractor calls
- VideoDetailScreen Download dialog using NewPipe's StreamInfo

Future-direction memo: openclaw-workspace/memory/project_rustypipe_fork.md
— fork plan + revival path for the Rust extractor when we're ready
to maintain it.

Verified working in the Android emulator: dQw4w9WgXcQ plays, ExoPlayer
reports state=PLAYING(3), position advancing, video surface rendering.

strawApp/build.gradle.kts

@@ -94,8 +94,8 @@ dependencies {
     implementation(libs.coil.compose)
     implementation(libs.coil.network.okhttp)
 
-    // Phase U-5: NewPipeExtractor (Java) torn out — strawcore handles
-    // all YT extraction. OkHttp stays for RYD + SponsorBlock JSON clients.
+    // NewPipeExtractor (JVM/Android-only) + its OkHttp dep
+    implementation(libs.newpipe.extractor)
     implementation(libs.squareup.okhttp)
 
     // JSON for SponsorBlock + Return YouTube Dislike clients
@@ -110,98 +110,4 @@ dependencies {
     implementation("androidx.media3:media3-session:1.4.1")
     // Guava ListenableFuture support for awaiting MediaController connect.
     implementation("androidx.concurrent:concurrent-futures-ktx:1.2.0")
-
-    // strawcore — Rust YouTube extractor via UniFFI/JNA. Built by the
-    // cargoBuild + uniffiBindgen tasks below; phase U-2+ exposes search /
-    // streamInfo / channelInfo to replace NewPipeExtractor.
-    implementation("net.java.dev.jna:jna:5.14.0@aar")
 }
-
-// =============================================================================
-// Phase U-1 — Rust core build glue.
-//
-// Two tasks chain into the Android build:
-//   cargoBuild       — cross-compiles rust/strawcore for the four Android ABIs
-//                      via cargo-ndk and drops the .so files in strawApp/src/main/jniLibs/.
-//   uniffiBindgen    — generates the Kotlin bindings from the freshly-built lib
-//                      into strawApp/src/main/java/uniffi/strawcore/.
-//
-// Both depend on:
-//   - cargo + rustup with the four Android targets installed
-//   - cargo-ndk on PATH
-//   - ANDROID_NDK_HOME pointing at an NDK with the right toolchains
-// All of that lives in the build-host container (see internal-infra
-// containers/build-host/Dockerfile + ad-hoc install notes 2026-05-24).
-// =============================================================================
-
-val rustRoot = file("../rust").absolutePath
-val jniLibsDir = file("src/main/jniLibs").absolutePath
-val bindingsDir = file("src/main/java").absolutePath
-
-// Resolve cargo + the NDK by absolute path so the Gradle Exec tasks don't
-// depend on whatever PATH the user invoked gradle with. Fall back to env
-// var (CARGO_HOME) if set, else the build-host default.
-val cargoHome: String = System.getenv("CARGO_HOME") ?: "/caches/cargo"
-val cargoBin: String = "$cargoHome/bin/cargo"
-val ndkHome: String = System.getenv("ANDROID_NDK_HOME")
-    ?: System.getenv("ANDROID_NDK_ROOT")
-    ?: "/caches/android-sdk/ndk/27.2.12479018"
-
-val cargoBuild by tasks.registering(Exec::class) {
-    group = "rust"
-    description = "Cross-compile strawcore for all Android ABIs via cargo-ndk."
-    workingDir = file(rustRoot)
-    environment("ANDROID_NDK_HOME", ndkHome)
-    environment("PATH", "$cargoHome/bin:${System.getenv("PATH") ?: ""}")
-    commandLine = listOf(
-        cargoBin, "ndk",
-        "-t", "arm64-v8a",
-        "-t", "armeabi-v7a",
-        "-t", "x86",
-        "-t", "x86_64",
-        "-o", jniLibsDir,
-        "build", "--release", "-p", "strawcore",
-    )
-    standardOutput = System.out
-    errorOutput = System.err
-}
-
-// Build a host-arch debug .so for uniffi-bindgen to read metadata from.
-// Cross-compiled Android .so files have the same UniFFI metadata symbols,
-// but the release profile's strip+LTO can strip the sections in a way that
-// trips bindgen's library-mode reader. Build host debug separately.
-val cargoBuildHost by tasks.registering(Exec::class) {
-    group = "rust"
-    description = "Build host-arch debug strawcore so bindgen can read its UniFFI metadata."
-    workingDir = file(rustRoot)
-    environment("PATH", "$cargoHome/bin:${System.getenv("PATH") ?: ""}")
-    commandLine = listOf(cargoBin, "build", "-p", "strawcore")
-    standardOutput = System.out
-    errorOutput = System.err
-}
-
-val uniffiBindgen by tasks.registering(Exec::class) {
-    group = "rust"
-    description = "Generate Kotlin bindings for strawcore via uniffi-bindgen."
-    dependsOn(cargoBuildHost)
-    workingDir = file(rustRoot)
-    environment("PATH", "$cargoHome/bin:${System.getenv("PATH") ?: ""}")
-    commandLine = listOf(
-        cargoBin, "run", "--quiet", "--bin", "uniffi-bindgen", "--",
-        "generate",
-        "--library", "target/debug/libstrawcore.so",
-        "--crate", "strawcore",
-        "--language", "kotlin",
-        "--no-format",
-        "--out-dir", bindingsDir,
-    )
-    standardOutput = System.out
-    errorOutput = System.err
-}
-
-// Make sure Android's JNI-libs merge picks up the freshly built .so files,
-// and Kotlin compilation can resolve the generated bindings.
-tasks.matching { it.name.startsWith("merge") && it.name.endsWith("JniLibFolders") }
-    .configureEach { dependsOn(cargoBuild) }
-tasks.matching { it.name.startsWith("compile") && it.name.endsWith("Kotlin") }
-    .configureEach { dependsOn(uniffiBindgen) }