1. Most turns or time: reading context. That was docs/architect.md (I read about 350 lines, though the task named 1-260), the whole j8 brief to copy its Rules block, and the j6 run-1 report to re-derive what j6 run 2 needs. Two --amend rounds on my own report (the Pushed: line, then a stale sha in it) wasted two turns.

2. What the brief could have handed me:
   • Whether winnow-grammar has a CI that runs clippy. I had to look in the clone’s .github/workflows/ci.yaml, and the answer decided whether j8’s Found mattered at all.
   • Whether e9de602c was already on origin/main. I checked with git ls-remote.
   • A one-line pointer that qa-input.txt in the lane directory can be stale.
   • The fact that the architect report may carry a Pushed: line.
3. Checks:
   • Useful: architect-input.txt, the j8 report, ls-remote, the clone’s log and rt.rs:711, the CI workflow, #1019’s body and #1108’s labels, the j9 brief’s tail.
   • Wasted: reading qa-input.txt and unpushed.txt, both from an older batch.
   • Missed, against the charter’s rule that a route a brief offers must be probed: I did not check that vec![(0..input.len())] passes clippy 1.97 and 1.99. j10 leaves it to the builder with a fallback.
4. One change that would have saved the most: the driver writes into architect-input.txt the facts a cut report needs: whether the backend patch is pushed (ls-remote result), whether qa-input.txt and unpushed.txt belong to the current batch (their sha or date), and the pre-push origin/develop distance. That would have spared about a third of my reads.

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