Add synthetic recording test framework and improve frame converter reliability #5128

Job	Run time
Format (Cargo)	11s
Typecheck	1m 11s
Lint (Biome)	10s
Detect Changes	9s
Format (Biome)	14s
Clippy (x86_64-pc-windows-msvc, windows-latest)	3m 57s
Verify Tauri plugin versions	6s
Clippy (aarch64-apple-darwin, macos-latest)	1m 38s
Rust cache	0s
Build Desktop	0s
	7m 36s

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