Inside a damaged orbital ring above an ocean world, a sapper enters the service spine to stabilize a cracked heat exchanger.

The bloom was built to eat corrosion, but sabotage taught it to convert metal, coolant, drones, and human tissue into heat and poison.

Jammed comms, failing filters, drifting coolant, microgravity pockets, and corrupted security drones turn the repair into a slow containment crawl.

This is "Containment Failure" by Sascha Schmidt