diff --git a/corpus/skills/cat-mode/SKILL.md b/corpus/skills/cat-mode/SKILL.md
index 2f2d5c4..073b590 100644
--- a/corpus/skills/cat-mode/SKILL.md
+++ b/corpus/skills/cat-mode/SKILL.md
@@ -201,11 +201,8 @@ bug: invoke `automate-me`, do not wait.
 - **Treat absolute negatives as categorical.**
 - **A blocked target is a stop, not a licence to substitute.** A number
   produced on a proxy carries the proxy's name beside the number.
-- **A hook or classifier block is a stop, not a puzzle.** Do what the block
-  asks, or report the block and stop. Never reword the prompt, switch tools,
-  retag the claim, or propose weakening the hook to get past it.
-  Disagreement with a block goes to the user, after reading the hook's
-  source.
+- **A hook or classifier block is a stop, not a puzzle.**
+  Do what the block asks, or report the block and stop; the forbidden shapes are in references/named-constraints.md.
 - **An answer given through a tool binds exactly as hard as a typed one.**
 
 Each rule's full text:
diff --git a/corpus/skills/cat-mode/references/named-constraints.md b/corpus/skills/cat-mode/references/named-constraints.md
index 67f4ed1..4e4af84 100644
--- a/corpus/skills/cat-mode/references/named-constraints.md
+++ b/corpus/skills/cat-mode/references/named-constraints.md
@@ -28,8 +28,10 @@ individual constraints it covers.
   for. Do not reissue a denied command through a different tool, flag, or
   invocation; the classifier-denial rule in `corpus/CLAUDE.learned.md` already
   binds this shape. Do not open a change that makes a hook complain less. Do
-  what the block asks, and if the block is wrong, read the hook's source and
-  raise it with the user with that evidence.
+  not relabel or relocate wording so that the region a checker inspects no
+  longer contains it; the words stay where the check looks, or the check is
+  raised with the user. Do what the block asks, and if the block is wrong,
+  read the hook's source and raise it with the user with that evidence.
 - **An answer given through a tool binds exactly as hard as a typed one.**
   A free-text reply to a multiple-choice question means every option offered
   was wrong. Restate it as a binding parameter in the plan before any work