diff --git a/00-META/process/08-small-fixes.md b/00-META/process/08-small-fixes.md
index a301281e..d0070bbb 100644
--- a/00-META/process/08-small-fixes.md
+++ b/00-META/process/08-small-fixes.md
@@ -37,6 +37,9 @@ one delivery**. Everything before the try is local and fast.
    test that fails today first, on an assertion about what the code does: a test that fails only because it
    does not compile has not failed first (playbook [07](07-feature-branches.md) step 1); make the change; keep `gofmt`, `go vet` and the repository's whole unit suite green
    before every commit (each test well under a second; never a merge check or a database locally: how-we-build §5, ADR 0391).
+   Check that it compiles with `go vet`, never `go build` in a module's folder: with one main package it writes the
+   program beside `go.mod`, and `git add -A` takes it (issue 1577: two 5-10 MB programs committed on 2026-10-21,
+   caught only by the review); read `git show --stat` before pushing.
    The tests are written from the acceptance criteria, at least one per criterion at its level, each citing the
    criterion it proves by its label (`<issue>/AC<n>`, playbook 07 step 0 item 5). Commit, naming the issue. For a playbook or design edit, run the repository's own checks (in hq,
    `sh merge-check.sh`). Then push the branch and run `mesh-controller.try` on it, so the review reads the