Create an original five-second cinematic suspense insert. A worn wooden apartment door slowly swings open once in an empty narrow corridor at night. A rain-streaked window is visible beside it. Locked camera, medium close view of the hinge and door edge, cool window light, stable door and wall geometry, no people. Audio: one gradual dry wooden hinge creak begins as the door starts moving; soft rain taps the window behind it, quieter than the creak. Natural indoor perspective. No speech, narration, music, bangs, text or logos.