Tiny FastAPI service over PhoW2V Vietnamese word vectors. Mirrors
word2sim's endpoint shapes (/similarity /neighbors /vocab /random) so
clients can swap URLs without code changes.
- Auto-downloads VinAI's PhoW2V on first boot, caches binary .bin for ~5x faster restarts
- Viet-aware canonicalizer: exact -> lowercase -> space-to-underscore
- Supports both word (compound) and syllable variants via env
- Unicode-aware random-word filter accepts diacritics, rejects digits/punct
