diff --git a/docs/specs/2026-09-29-processor-service-design.md b/docs/specs/2026-09-29-processor-service-design.md
index d8bb720..b6fd1ed 100644
--- a/docs/specs/2026-09-29-processor-service-design.md
+++ b/docs/specs/2026-09-29-processor-service-design.md
@@ -525,8 +525,9 @@ reclaim re-running (not re-publishing) the extraction.
   old extractor on an old Processor, and the new one on a new Processor. Such a
   bump is **notice**: it carries that reasoning and the moved digests, which
   already show any dispatch change for an essence Watcher sends today. It
-  becomes coordination again only if Processor starts resolving essences
-  itself, and `tests/test_pin.py` fails first if it does.
+  becomes coordination again only if Processor starts calling co-core's
+  resolvers itself, and `tests/test_pin.py` fails if it does. (Resolving any
+  other way is Section 3's to forbid, and a co-core bump wouldn't move it.)
 - Until watcher#350 (2026-10-10) both sides extracted, so the pin was in
   lockstep with Watcher's, and both repos moved together or neither did.
 
diff --git a/tests/test_pin.py b/tests/test_pin.py
index da249d8..8a69333 100644
--- a/tests/test_pin.py
+++ b/tests/test_pin.py
@@ -6,8 +6,9 @@
 co-core-direct and every moved digest in the bump note.
 
 Whether a bump is notice or coordination turns on the contract (§5). Essence
-resolution is outside it only because Processor never resolves an essence itself, and
-a test holds that premise (processor#57).
+resolution is outside it only because Processor never calls co-core's resolvers
+(``resolve_dispatch_essence``, ``extension_media_type``), and a test holds that
+premise (processor#57).
 """
 
 import ast
@@ -90,6 +91,15 @@ def test_processor_version_is_co_core_plus_generation() -> None:
         ("# resolve_dispatch_essence is the issuer's", False),
         ("from co_core.pure.extract.dispatch import extractor_for_essence", False),
     ],
+    ids=[
+        "from-import",
+        "from-import-as",
+        "attribute",
+        "name",
+        "docstring",
+        "comment",
+        "dispatch-call",
+    ],
 )
 def test_the_guard_catches_code_not_text(source: str, caught: bool) -> None:
     assert bool(_resolver_uses(source)) is caught