PKGBUILD: update deps, drop config.toml install, fix desktop file

- Updated pkgdesc to match current multi-platform scope (YouTube, TikTok, Twitch, etc.)
- Added runtime deps: ffmpeg, xdg-utils
- Added optdepends: libnotify for desktop notifications
- Added pkgver() function for VCS auto-versioning
- Switched --locked to --frozen (stricter, requires Cargo.lock)
- Dropped config.toml install (gitignored, app generates on first launch)
- Removed conditional icon check (file always exists)
- Added README.md install

youtube-backup.desktop: fixed Exec/Icon names to match binary (yt-offline)
- Added GenericName, Keywords, proper AudioVideo;Video;Network; categories

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

PKGBUILD

@@ -2,19 +2,39 @@
 pkgname=yt-offline
 pkgver=0.1.0
 pkgrel=1
-pkgdesc="A desktop app for archiving YouTube channels with yt-dlp"
+pkgdesc="Self-hosted archive for YouTube, TikTok, Twitch, Vimeo, Bandcamp, SoundCloud, Odysee and more. Desktop GUI + web UI."
 arch=('x86_64' 'aarch64')
 url="https://codeberg.org/anassaeneroi/yt-offline"
 license=('AGPL-3.0-only')
-depends=('yt-dlp' 'mpv' 'sqlite' 'libxcb')
+depends=(
+    'yt-dlp'
+    'ffmpeg'
+    'mpv'
+    'sqlite'
+    'libxcb'
+    'xdg-utils'
+)
+optdepends=(
+    'libnotify: desktop notifications when downloads finish'
+)
 makedepends=('rust' 'cargo')
 options=('!lto')  # rusqlite bundled sqlite cannot be LTO-linked with rust-lld
 source=("git+https://codeberg.org/anassaeneroi/yt-offline.git")
 sha256sums=('SKIP')
 
+pkgver() {
+    cd "$pkgname"
+    # 0.1.0.r12.gabcdef0 — last tag, commits since, short hash
+    git describe --long --tags --always 2>/dev/null \
+        | sed 's/^v//; s/\([^-]*-g\)/r\1/; s/-/./g' \
+        || printf "0.1.0.r%s.g%s" \
+            "$(git rev-list --count HEAD)" \
+            "$(git rev-parse --short HEAD)"
+}
+
 build() {
     cd "$pkgname"
-    cargo build --release --locked
+    cargo build --release --frozen
 }
 
 package() {
@@ -22,11 +42,7 @@ package() {
 
     install -Dm755 target/release/yt-offline "$pkgdir/usr/bin/yt-offline"
     install -Dm644 youtube-backup.desktop "$pkgdir/usr/share/applications/yt-offline.desktop"
-
-    if [ -f "icon.png" ]; then
-        install -Dm644 icon.png "$pkgdir/usr/share/pixmaps/yt-offline.png"
-    fi
-
+    install -Dm644 icon.png "$pkgdir/usr/share/pixmaps/yt-offline.png"
     install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
-    install -Dm644 config.toml "$pkgdir/etc/yt-offline/config.toml.example"
+    install -Dm644 README.md "$pkgdir/usr/share/doc/$pkgname/README.md"
 }