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nrobi144 eae1ed88ec fix(desktop,media): address PR #3175 review findings
Correctness fixes in GlobalMediaPlayer.kt
- snapshotFlow { hasMedia } collector for initial seek used `return@collect`
  which only exits the lambda; the collector kept running and each
  subsequent playVideo() call accumulated a live collector that would
  re-fire a stale seekTo() on the wrong media. Replaced with `Flow.first`
  which terminates the collection cleanly.
- playVideo()/playAudio() reset the public MediaPlaybackState to
  volume=100/isMuted=false on a new URL, but the kdroidFilter player
  retains its `volume` across openUri(); muting one track and starting a
  new one left the engine silent while the UI showed unmuted. Reset
  `player.volume = 1f` to match the public state.
- ensureVideoPlayer()/ensureAudioPlayer() called createVideoPlayerState()
  synchronously from the Compose getter; if native init throws (missing
  GStreamer on Linux, broken NativeLibraryLoader extraction) the whole
  window would crash. Wrapped in runCatching and changed
  activeVideoPlayerState to nullable. Consumers in DesktopVideoPlayer
  and GlobalFullscreenOverlay handle the null path by rendering the
  thumbnail / blank backdrop respectively; playVideo()/playAudio()
  surface "Video playback unavailable" through the existing
  errorReason -> PlaybackErrorMessage path.

Crash mitigation (kdroidFilter 0.10.0 UAF in MacVideoPlayerSurface)
- NowPlayingBar previously mounted a SECOND VideoPlayerSurface against
  the same VideoPlayerState while the feed card was already mounting
  one, doubling the draw rate against the shared frame bitmap and
  widening the UAF window in MacVideoPlayerSurface's RasterFromBitmap
  path. Mini-preview now renders the cached thumbnail (or the music
  icon fallback). 0.10.1 contains an upstream fix
  ("recover video playback after composition removal") but is not yet
  on Maven Central — single-surface mounting is the only mitigation
  we can ship today.

VideoThumbnailCache.kt
- Truncated-download cache poisoning: when an origin ignored the
  Range: header and returned HTTP 200 with the full body, we capped
  the copy at MAX_THUMB_BYTES and persisted the truncated file
  forever. Subsequent thumbnail attempts hit the broken cache file
  and re-failed JCodec/ffmpeg every time. Tag download results with
  whether the server actually returned 206; on 200, extract from the
  temp file and delete it (no persistent cache hit).
- Tor bypass: replaced the bare OkHttpClient with
  DesktopHttpClient.currentClient() so thumbnail fetches respect the
  user's Tor preference (fail-closed when Tor is expected but
  bootstrapping).
- ffmpeg version probe leaked the process on hang: now drains stdout
  to DISCARD and calls destroyForcibly() on timeout.
- Frame-extract ffmpeg subprocess could deadlock on a chatty stderr
  pipe: redirectError(DISCARD) so we never wait on stderr; a finally
  block destroys the process if anything leaked through the timeout.

CI workflow cleanup
- Removed vlc-setup download cache + pre-fetch steps from
  build.yml and smoke-test-desktop.yml. They were targeting an
  ir.mahozad.vlc-setup plugin we no longer apply, so they wasted
  ~minutes of CI time per leg and tied the build to videolan.org
  reachability for no reason.
- Trimmed create-release.yml's stale VLC-plugins justification on
  the linuxdeploy-vs-appimagetool comment.

.gitignore + missing per-OS ffmpeg READMEs
- The pre-PR rules blanket-ignored desktopApp/src/jvmMain/appResources/{linux,macos,windows}/
  so the LGPL FFmpeg drop-in slot READMEs created in 704f4f44e never
  reached the commit. Refined the ignore rules to keep stale vlc/ workspace
  trees out of git (still ignored) while explicitly tracking the
  ffmpeg/README.md drop-in slot under each OS. The READMEs document the
  recommended LGPL build source per OS for the bundled-FFmpeg packaging
  path.

Verified on macOS arm64:
  ./gradlew :desktopApp:compileKotlin   BUILD SUCCESSFUL
  ./gradlew :desktopApp:test            BUILD SUCCESSFUL
  ./gradlew :desktopApp:spotlessApply   clean

Refs PR #3175 review by @davotoula.
2026-06-11 17:46:12 +03:00

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/local.properties
/.idea/caches
/.idea/libraries
/.idea/modules.xml
/.idea/workspace.xml
/.idea/navEditor.xml
/.idea/assetWizardSettings.xml
/.idea/androidTestResultsUserPreferences.xml
/.idea/deploymentTargetDropDown.xml
/.idea/deploymentTargetSelector.xml
/.idea/appInsightsSettings.xml
/.idea/ktlint-plugin.xml
/.idea/ktfmt.xml
/.idea/studiobot.xml
/.idea/other.xml
/.idea/runConfigurations.xml
/.idea/ChatHistory_schema_v2.xml
/.idea/artifacts/*
/.idea/kotlinNotebook.xml
/.idea/ChatHistory_schema_v3.xml
/.idea/markdown.xml
/.idea/AndroidProjectSystem.xml
/.idea/deviceManager.xml
/.idea/inspectionProfiles/
/.idea/migrations.xml
/.idea/planningMode.xml
/desktopApp/vlc-temp/
/commons/.idea/gradle.xml
/commons/.idea/misc.xml
/commons/.idea/workspace.xml
/quartz/.idea/modules.xml
/quartz/.idea/workspace.xml
.DS_Store
/build
/captures
.cxx
# superpowers skill
.superpowers
docs/brainstorms
docs/superpowers
# Built application files
*.apk
*.aar
*.ap_
*.aab
# Files for the ART/Dalvik VM
*.dex
# Java class files
*.class
# Generated files
bin/
gen/
out/
# Uncomment the following line in case you need and you don't have the release build type files in your app
# release/
# Gradle files
.gradle
.gradle/
build/
.kotlin/
# Local configuration file (sdk path, etc)
local.properties
# Proguard folder generated by Eclipse
proguard/
# Log Files
*.log
# Android Studio
/*/build/
/*/local.properties
/*/out
/*/*/build
/*/*/production
captures/
.navigation/
*.ipr
*~
*.swp
# IntelliJ
*.iml
*.iws
/out/
deploymentTargetDropdown.xml
render.experimental.xml
# User-specific configurations
.idea/**/caches/
.idea/**/libraries/
.idea/**/shelf/
.idea/**/codeStyles
.idea/**/workspace.xml
.idea/**/tasks.xml
.idea/**/.name
.idea/**/compiler.xml
.idea/**/copyright/profiles_settings.xml
.idea/**/encodings.xml
.idea/**/misc.xml
.idea/**/modules.xml
.idea/**/scopes/scope_settings.xml
.idea/**/dictionaries
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.idea/**/jsLibraryMappings.xml
.idea/**/datasources.xml
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.idea/**/sqlDataSources.xml
.idea/**/dynamic.xml
.idea/**/uiDesigner.xml
.idea/**/assetWizardSettings.xml
.idea/**/gradle.xml
.idea/**/jarRepositories.xml
.idea/**/navEditor.xml
# Keystore files
# Uncomment the following lines if you do not want to check your keystore files in.
#*.jks
#*.keystore
# External native build folder generated in Android Studio 2.2 and later
.externalNativeBuild
.cxx/
# Google Services (e.g. APIs or Firebase)
# google-services.json
# Freeline
freeline.py
freeline/
freeline_project_description.json
# fastlane
fastlane/report.xml
fastlane/Preview.html
fastlane/screenshots
fastlane/test_output
fastlane/readme.md
# Version control
vcs.xml
# lint
lint/intermediates/
lint/generated/
lint/outputs/
lint/tmp/
# lint/reports/
# Local task tracking
TASKS.md
# Claude Code local settings
.claude/settings.local.json
.claude/scheduled_tasks.lock
# Per-OS appResources slots — historically the ir.mahozad.vlc-setup plugin
# populated these with VLC binaries (no longer used; superseded by
# kdroidFilter ComposeMediaPlayer). We still ignore the directory contents
# by default to keep stale workspaces from accidentally bundling old VLC
# trees into local packages, but explicitly track the ffmpeg/README.md
# drop-in slot for the LGPL FFmpeg binaries used by VideoThumbnailCache.
desktopApp/src/jvmMain/appResources/linux/*
desktopApp/src/jvmMain/appResources/macos/*
desktopApp/src/jvmMain/appResources/windows/*
!desktopApp/src/jvmMain/appResources/linux/ffmpeg/
!desktopApp/src/jvmMain/appResources/macos/ffmpeg/
!desktopApp/src/jvmMain/appResources/windows/ffmpeg/
desktopApp/src/jvmMain/appResources/*/ffmpeg/*
!desktopApp/src/jvmMain/appResources/*/ffmpeg/README.md
# CI-fetched AppImage tooling (downloaded by create-release workflow; not committed)
desktopApp/packaging/appimage/appimagetool-x86_64.AppImage
desktopApp/packaging/appimage/squashfs-root/
# Git worktrees
.worktrees/
.claude/worktrees/
benchmark/src/main/jniLibs/
/tools/marmot-interop/state
# Cargo build artifacts for the cross-stack interop sidecars at
# nestsClient/tests/hang-interop/. Cargo.lock is committed (binary workspace).
/nestsClient/tests/hang-interop/target/