Add a session background-music feature to the TUI. Ships two bundled
CC BY 4.0 albums (Kevin MacLeod / incompetech.com) under hh/music/:
'crypt' (dark ambient, 5 tracks) and 'terminal' (synth/chiptune, 6).
- hh/src/music.rs: playlist model + subprocess player (ffplay/mpv/cvlc
fallback chain), album discovery (user ~/.hh/music shadows bundled),
random shuffle, and /music import of the operator's own audio.
- /music [list] · play [album] (blank/random shuffles) · stop · next ·
import <path> [as <name>]; now-playing shown in the top bar + help.
- docs/music-licensing.md: CC-BY provenance/attribution register.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
leetcrypt
0e0dc27dbe