1. What cost the most: cutting the scratch files for 12 rows and converting each one (cut.sh, share.sh), then measuring the draft shares. The first P5a cut ended inside impl Project and had to be redone. Before compaction I also spent turns on rs2nika --help, which the binary read as a file name, so I took the flags from its source instead.
2. What the brief could have handed me:
   • the item and line map of the six files (I built it from grep -n on fn, impl and struct);
   • the converter’s command line (--profile check-free --prefix X_ --file) and how to compute a share;
   • the Part III 17 gaps already mapped to #920 and #922;
   • the M2/K1 pattern for Parsed (host plus arena).

   All of these come back in every planning brief.

3. Checks run:
   • scripts/pre-push-check.sh passed. It prints nothing on success, so I ran it a second time just to see the exit code; that run was wasted.
   • The guard set passed (22 tests). For a docs-only commit it proves nothing, but it was cheap.
   • The disk check: 0 freed, cache 4.2G, 3.9G free.

   No clippy and no build. One correction to the report’s Gate: green: it covers only those two checks.

4. Not verified, please check before briefing from the section:
   • “about 45% comments”;
   • exec being #281;
   • the line counts in Stays Rust.

   These are estimates I wrote while drafting the section; I did not re-check them against the sources.

5. One change that would save the most: a checked-in nikaia run scripts/plan_rows.nika -- FILE:RANGES PREFIX. It would cut the ranges, wrap methods in their impl, run rs2nika and print the draft share and the TODO reasons. Every planning brief could then name it instead of each agent rebuilding it in the scratchpad.

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