Restamp embeddings md5 guard for optimizer-stripped weights

UX: search auto-populates and auto-ranks (no Enter needed); perf: precomputed embeddings with weights-md5 guard (cold start ~90s -> ~15s), single-pass lowercase search blobs

Restore search/display columns in packaged frames (synonyms, ExactSynonyms, tractability, functionDescriptions) -- disease search was raising KeyError

Update to Open Targets Release 25.12: retrained model (validation-selected seed), matched vocab+data artifacts, OOF OTTree comparison for all pairs, plain-language known/novel labels, OTTree-first default sort, candidate-universe caption

Fix vocabulary permutation (serve training-time vocab via vocabs.json.gz); link disease/target names to Open Targets; show data release version

Update demo to the full two-tower UI

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