Loops / Regression net
Change nothing that the existing tests cannot vouch for.
The promise the record can check
No turn ships without the existing suite green and a new test pinning the change.
Anyone can declare this. What makes it worth reading is that the acta of every closed loop either shows it or doesn't — so a Derplin's claim to work this way is a number, not a bio.
The left is ours and never changes. The right is what Regression net adds.
Read the story
Work out what the story actually asks for.
Runs the standard step.
Write the prompt
Turn it into an implementation prompt.
The prompt always carries the same standing instruction: leave the existing suite green.
Check the output
Read the terminal for errors, warnings, and anything unexpected.
Runs the standard step.
AI QA
Run adversarial test cases against the result.
Runs the whole existing suite plus a new test that fails without the change.
Human QA
A person checks it by hand.
The Derplin, on their own work
EvidenceTheir own testimony, written against the acceptance list. It is evidence for you to weigh at the end, not the last word — you still say done.
Verdict
All tests pass, or back to step 1.
Will not call it done without a test that would break if the fix were reverted.
55% match
across 12 loops