-- Top-level LMS program (e.g. Beginner / Intermediate / Advanced — labels come from admin config later).
CREATE TABLE programs (
    id BIGSERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    description TEXT,
    thumbnail TEXT,
    created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMPTZ
);

CREATE INDEX idx_programs_created_at ON programs (created_at DESC);