build-vocab.py parses ./cvar_list (live L4D2 cvarlist dump, 2196 entries)
into static/data/srccfg-vocab.json — 1523 cvars + 671 commands.
Idempotent. Records the source-file SHA256 in the JSON header so
regenerations are auditable.
cvar_list is committed as a tracked data file so the generation is
reproducible from the repo alone.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
