v3.2.0

Bake'n Deck 3.2.0 - baken-core library split

Highlights

• The processing engine is now a separate library crate, baken-core. Loudness analysis and gain application, the Key+BPM playlist sorter, and the CDJ-safe transcoder live in crates/baken-core; the baken binary in crates/baken is a thin terminal front-end over it. The library carries no terminal UI dependencies and never prints, so other front-ends can embed it. It exposes a Progress callback and a CancelToken for long-running operations, a set_tools call to point at bundled ffmpeg and ffprobe binaries instead of PATH, and a typed Error enum at the public boundary. cdjsafe is split into plan (read and validate the playlist without touching disk) and convert. This is groundwork for a native Mac app (#96); the CLI's flags, prompts and output are unchanged (#84, #97).

Other Changes

• Fixed --backup and --report without a value. baken headroom <paths> --backup failed with "a value is required" even though the directory is documented as optional, because clap's built-in path parser rejects the empty sentinel used to mean "flag given, use the default". Both flags now accept the bare form again and fall back to <target>/backup and <target>/baken_report_<timestamp>.csv (#98).
• Per-file failures during analysis and processing are printed after the progress bar finishes instead of interleaved with it.
• The release workflow publishes baken-core to crates.io before baken.