/* eslint-disable */
/** 向量搜索：用 pgvector 存储项目描述的 embedding，做语义相似检索。 */

exports.up = (pgm) => {
  pgm.sql(`CREATE EXTENSION IF NOT EXISTS vector;`);
  pgm.sql(`ALTER TABLE assessments ADD COLUMN IF NOT EXISTS embedding vector(1024);`);
  pgm.sql(`CREATE INDEX IF NOT EXISTS idx_assessments_embedding ON assessments USING ivfflat (embedding vector_cosine_ops) WITH (lists = 10);`);
};

exports.down = (pgm) => {
  pgm.sql(`DROP INDEX IF EXISTS idx_assessments_embedding;`);
  pgm.sql(`ALTER TABLE assessments DROP COLUMN IF EXISTS embedding;`);
};