-- Integrity tracking columns
ALTER TABLE media_items ADD COLUMN last_verified_at TIMESTAMPTZ;
ALTER TABLE media_items ADD COLUMN integrity_status TEXT DEFAULT 'unverified';

-- Saved searches
CREATE TABLE IF NOT EXISTS saved_searches (
    id UUID PRIMARY KEY,
    name TEXT NOT NULL,
    query TEXT NOT NULL,
    sort_order TEXT,
    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
);