Function l2Normalize

apps/sim/lib/knowledge/embeddings.ts:152–158

* Gemini does NOT auto-normalize embeddings when `outputDimensionality` is set below the * native 3072 dimension on `gemini-embedding-001`. Manually L2-normalize so cosine and * inner-product similarity work correctly.

(vector: number[])

 * inner-product similarity work correctly.
 */
function l2Normalize(vector: number[]): number[] {
  let sumSquares = 0
  for (const v of vector) sumSquares += v * v
  const norm = Math.sqrt(sumSquares)
  if (norm === 0) return vector
  return vector.map((v) => v / norm)
}

function buildGeminiProvider(modelName: string, apiKey: string): ResolvedProvider['buildRequest'] {
  return (inputs, inputType) => ({