Todo and agents updates

AGENTS.md

@@ -142,6 +142,10 @@ one home, linking to it rather than restating (credentials, env vars, rotation s
 - Tests use the built-in `node --test` runner — no test framework dependency.
 - English everywhere. Keep code comments short and information-dense. Self explained code
   without any comment at all is the preferred solution.
+- Do not comment about history in the code or README. Like "This function included X before,
+  but it moved to Y".
+- Do not comment about the abscense of things, if it is not very undexpected. Banned is things
+  like "This function does not calculate pi, that is done in function Z".
 - Pin all dependencies and Docker images to exact, human-readable **semantic
   versions** — never ranges (`^`, `~`) and never digests/hashes. npm deps are kept
   exact by `.npmrc` (`save-exact=true`) + `npm ci`; the base image by tag (e.g.
@@ -161,4 +165,4 @@ one home, linking to it rather than restating (credentials, env vars, rotation s
   Skip this if the changes are purely documentation and/or comments.
 - Use well formed, standard compliant, rich URIs. Prefer state in the URL over POST:ing in for
   for example list pages with filters and pagination. Do: "ids=x&ids=y" and not "ids[]=x&ids[]=y"
-  and not "ids=x,y".
+  and not "ids=x,y".