diff --git a/corpus/skills/cat-mode/SKILL.md b/corpus/skills/cat-mode/SKILL.md
index 2f2d5c40..dc128f65 100644
--- a/corpus/skills/cat-mode/SKILL.md
+++ b/corpus/skills/cat-mode/SKILL.md
@@ -201,16 +201,11 @@ 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:
 [references/named-constraints.md](references/named-constraints.md).
-
 ## Categorical constraints & recurrence
 
 - Words like `only`, `never`, `any`, `no`, `do not`, `all`, `every`, and
diff --git a/corpus/skills/cat-mode/references/named-constraints.md b/corpus/skills/cat-mode/references/named-constraints.md
index 67f4ed17..0635021d 100644
--- a/corpus/skills/cat-mode/references/named-constraints.md
+++ b/corpus/skills/cat-mode/references/named-constraints.md
@@ -27,8 +27,11 @@ individual constraints it covers.
   turn with a couldn't-verify tag instead of running the check the gate asked
   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
+  binds this shape. Do not open a change that makes a hook complain less.
+  Do 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
diff --git a/tests/test_cat_mode.py b/tests/test_cat_mode.py
index 8c198bf6..4f5467dc 100644
--- a/tests/test_cat_mode.py
+++ b/tests/test_cat_mode.py
@@ -605,16 +605,23 @@ def test_named_constraints_reference_keeps_its_rules(self):
 
     def test_block_is_a_stop_rule_kept_its_full_text_in_the_reference(self):
         """The bullet's bold lead lives in SKILL.md; the concrete forbidden
-        shapes (reword, retag, reissue through another tool, weaken the hook)
-        live in named-constraints.md. Locks both halves the same way
+        shapes (reword, retag, reissue through another tool, weaken the hook,
+        relabel text away from the checker) live in named-constraints.md.
+        Locks both halves the same way
         test_unhedged_claim_rule_kept_its_full_text_when_it_moved does."""
         skill = normalized_skill_text()
         self.assertIn("A hook or classifier block is a stop, not a puzzle.", skill)
+        self.assertIn("the forbidden shapes are in references/named-constraints.md", skill)
+        self.assertNotIn("Never reword the prompt, switch tools", skill)
         reference = normalized_reference_text("named-constraints.md")
         self.assertIn("A hook or classifier block is a stop, not a puzzle.", reference)
         self.assertIn("Do not reword a subagent prompt after `agent-routing-guard` refused it", reference)
         self.assertIn("Do not reissue a denied command through a different tool, flag, or invocation", reference)
         self.assertIn("Do not open a change that makes a hook complain less", reference)
+        self.assertIn(
+            "Do not relabel or relocate wording so that the region a checker inspects no longer contains it",
+            reference,
+        )
 
     def test_routing_defers_to_an_installed_harness_routing_skill(self):
         skill = normalized_skill_text()