Faster playback prep, export pipeline, and GIF frame handling #6323

Job	Run time
Typecheck	1m 32s
Lint (Biome)	12s
Detect Changes	7s
Format (Biome)	10s
Format (Cargo)	8s
Clippy (aarch64-apple-darwin, macos-latest)	2m 7s
Clippy (x86_64-pc-windows-msvc, windows-latest)	4m 16s
Verify Tauri plugin versions	0s
Build Desktop	0s
Rust cache	0s
	8m 32s

Provide feedback