What changed: A login page was added. Users can now type their email and password to sign in. The system checks if the password matches what's stored in the database. Verification: - PASS SYNTAX: No errors found - PASS LOGIC: Login flow correctly checks email, finds user, compares password, returns session token - WARNING SAFETY: Passwords are hashed (good), but no rate limiting. Someone could try thousands of passwords per minute (brute force attack) - PASS SIDE EFFECTS: Existing pages still work. New page added without modifying old code - WARNING COMPLETENESS: No "forgot password" flow. Users who forget their password have no way to recover Evidence: Walked through code line by line. Correct password returns token. Wrong password returns error. Non-existent email returns generic "invalid credentials" (good - doesn't reveal if email exists). CONFIDENCE: 6/10 Fix rate limiting before shipping. Password recovery can be added later.