-- Migration: Add startup_followers table
CREATE TABLE IF NOT EXISTS startup_followers (
    id INT AUTO_INCREMENT PRIMARY KEY,
    startup_id INT NOT NULL,
    user_id INT NOT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY unique_follow (startup_id, user_id),
    FOREIGN KEY (startup_id) REFERENCES startups(id) ON DELETE CASCADE,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);