[Feature] Support FG-CLIP2-base (bilingual zh/en) as a Smart Search model

I have searched the existing feature requests, both open and closed, to make sure this is not a duplicate request. • Yes The feature What Add fg-clip2-base ([qihoo360/fg-clip2-base]( 0.4B, bilingual zh/en, fine-grained) to the supported Smart Search models. The code change itself is two allow-list entries, already opened as PR #31528: • machine-learning/immich_ml/models/constants.py: add "fg-clip2-base" to _OPENCLIP_MODELS • server/src/constants.ts: add 'fg-clip2-base': { dimSize: 768 } to CLIP_MODEL_INFO I verified this end-to-end locally: built the server and ML images from that branch, deployed a stock docker-compose stack, ran Smart Search over ~1.6k photos, and searched with both English and Chinese queries. Embeddings are 768-d and the smart_search column is migrated automatically via CLIP_MODEL_INFO. The converted ONNX package (Immich cache layout, fp32, validated cos=1.0 against the torch reference) is already public: — I …