Server-side fuzzy alias table applied to the final STT transcript
before forwarding to /voice/intent. Closes the metier-vocabulary
gap of generic STT models (U-SON, LA 440 Hz, Zacus, ...) without
needing per-request prompt biasing — which moshi-server's Rust
runtime does not expose anyway.
Loader is soft on pyyaml (degrades to no-op if missing) and on
the yaml file itself (logs + skips on parse error). Patterns are
case-insensitive with auto word-boundaries, with a (?...) escape
hatch for advanced regex.
Per-puzzle entries layer on top of globals — firmware passes
puzzle_id in the hello frame; legacy clients omit it and get
just the global polish. Loaded once at module import; restart
voice-bridge to reload.
Unit tested on 5 representative transcripts (eu son nez -> U-SON,
diapazon -> diapason, le rasus -> Zacus, le la 440 hertz -> LA 440 Hz).
L'électron rare
966ff731bd