Review had these removed across the role once already, and the 11 September
pass cleared every file that was flagged. The seal-key pin and the
recovery-key work then reintroduced the same pattern in nine new places.
Also removes two that predate the review and were never flagged: the
healthcheck note in meta/services.yml and the entrypoint note in
compose.yml.j2. Both are the same narrative-exception shape.
Param docs, file headers and the plain contract notes in the Playwright specs
stay: separate categories, none of them objected to. What the deleted
comments recorded lives in the role README.