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643485bdb3
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Adds lib.mldata search over the CLIP index (#49): forFile returns a file's stored payload; similar ranks nearest files by cosine on the CLIP embedding; searchByEmbedding ranks the index against a caller-supplied query vector. All RAM-only, reusing the packed Float32Array index and id list. No text encoder is bundled — the caller provides the query vector. Redo of the reverted first cut: under noUncheckedIndexedAccess the cosine loops read query[k]/embeddings[base+k]/fileIDs[i] as number|undefined, so tsc (make build) failed though make check passed. Every such read is now in range by the surrounding bounds check (query length, packed layout), so the reads are asserted non-null rather than paying a per-element guard in the hot ~50k×512 loop. Gated on both make check and make build. Model: opus-4-8