-- Add extracted text and enrichment columns
ALTER TABLE files ADD COLUMN IF NOT EXISTS extracted_text TEXT;
ALTER TABLE files ADD COLUMN IF NOT EXISTS text_quality VARCHAR(20);
ALTER TABLE files ADD COLUMN IF NOT EXISTS enrichment JSONB;

-- Add indexes for text search
CREATE INDEX IF NOT EXISTS idx_files_extracted_text ON files USING gin(to_tsvector('english', extracted_text));
CREATE INDEX IF NOT EXISTS idx_files_enrichment ON files USING gin(enrichment);

-- Add full text search capability
CREATE INDEX IF NOT EXISTS idx_files_fts ON files USING gin(to_tsvector('english', COALESCE(extracted_text, '')));