-- +goose Up
-- Drop the legacy single-dimension embeddings column (was NOT NULL) to allow inserts
-- that now use embedding_384 / embedding_1536. All new data goes into those columns.
ALTER TABLE sentence_embeddings
    DROP COLUMN IF EXISTS embeddings;

-- +goose Down
-- Re-create the legacy embeddings column (empty) as vector(1536) NULLABLE for rollback.
ALTER TABLE sentence_embeddings
    ADD COLUMN IF NOT EXISTS embeddings vector(1536);