Then she leaned back, closed her eyes, and listened to the hum. For the first time all night, it sounded like music.

No pressure.

She was the BuildMaster.

Lena didn't just fix the code. She used BuildMaster's "artifact lineage" view to rewind time, seeing every commit, every test, every fragile human decision that led to this moment. She merged the changes manually, then triggered a new build.

And because of that, three hundred ships would sail safely home.