diff --git a/AGENTS.md b/AGENTS.md
index 33ad6c7..94a1c5d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -16,8 +16,9 @@ TDD required. Red → Green → Refactor. No production code without a failing t
 
 **Brainstorming** (`skills/brainstorming`, superpowers' unmodified): these are the partner's preferences its *Where it goes* defers to.
 - A change to the service's behaviour amends the spec: a dated **Amended** entry in its header, plus the sections it touches. A design doc of its own only for work the spec doesn't cover: `docs/specs/YYYY-MM-DD-<issue>-<topic>-design.md`, never `docs/superpowers/specs/`.
-- `superpowers:<name>` means this repo's `skills/<name>`, whichever vendor it links. `superpowers:writing-plans` is gregoryfoster's `writing-plans`, which writes the plan above to `docs/plans/`; `superpowers:using-git-worktrees` is gregoryfoster's too (§ Conventions).
+- `superpowers:<name>` means this repo's `skills/<name>`, whichever vendor it links. `superpowers:writing-plans` is gregoryfoster's `writing-plans`, which writes the plan above to `docs/plans/`; `superpowers:using-git-worktrees` is gregoryfoster's too (§ Conventions → Workflow).
 - The builder check runs as written. On an amendment, hand it the spec and name the amended sections.
+- Its sizes don't replace the rules above: a "small change" that is non-trivial still gets a plan, and every change goes issue → branch → PR.
 
 ## Environment & Tooling
 
diff --git a/tests/test_skills.py b/tests/test_skills.py
index 5624017..78ac70f 100644
--- a/tests/test_skills.py
+++ b/tests/test_skills.py
@@ -132,10 +132,14 @@ def test_superpowers_invocations_resolve_here() -> None:
     """A superpowers skill's ``superpowers:<n>`` is ``skills/<n>``; AGENTS.md maps strays."""
     agents = (ROOT / "AGENTS.md").read_text()
     ours = [n for n in _names(SKILLS) if _vendor_of(n) == "obra-superpowers"]
+    # A dangling link globs nothing, and an empty scan passes: fail on it instead.
+    for n in ours:
+        assert (SKILLS / n / "SKILL.md").is_file(), (n, DOCTOR_HINT)
     invoked = {
         m
         for n in ours
-        for m in re.findall(r"superpowers:([\w-]+)", (SKILLS / n / "SKILL.md").read_text())
+        for md in (SKILLS / n).rglob("*.md")
+        for m in re.findall(r"superpowers:([\w-]+)", md.read_text())
     }
     missing = sorted(n for n in invoked if not (SKILLS / n).exists())
     assert not missing, missing