chore(gates): retitle the depgraph gate as the report's model tests

The Layering Guard step no longer claims to agree the report with the gate;
it runs the depgraph model and blast-radius tests, which the gate manifest
requires a registered check to own.

Author: thymikee

.github/workflows/ci.yml

@@ -115,15 +115,14 @@ jobs:
         uses: ./.github/actions/run-gate
         with: { gate: layering }
 
-      - name: Check the depgraph report agrees with the gate
-        # scripts/depgraph reads the same model as the gate, so its inversion count must
-        # reproduce TYPE_INVERSION_BASELINE. Free two-sources check: if the tree changes
-        # and only one side is updated, this fails and names the difference. Runs beside
-        # the layering gate so the two can never be green independently.
+      # Model tests for the dependency-graph report and its blast-radius query. The report
+      # reads the gate's model (scripts/layering/model.ts) and applies the gate's own R6
+      # counting rule, so it is not a second measurement of TYPE_INVERSION_BASELINE.
+      - name: Check the depgraph report model
         uses: ./.github/actions/run-gate
         with: { gate: depgraph }
 
-      # Tests for the TMPDIR redirection itself, hidden the same way as the check above.
+      # Tests for the TMPDIR redirection itself.
       #
       # Deliberately NOT in Coverage next to `check:tmpdir-leaks`, where the subject matter
       # would put it: vitest-tmpdir-global-setup.test.ts proves the lifecycle by spawning a

scripts/check-affected/checks.ts

@@ -95,7 +95,7 @@ export const CHECK_CATALOG: readonly CheckSpec[] = [
   gate('affected-selector', 'Affected-check selector model', 'check:affected:test'),
   gate('gate-manifest', 'Gate manifest — every gate owned and wired', 'check:gate-manifest'),
   gate('gate-manifest-model', 'Gate manifest model', 'check:gate-manifest:test'),
-  gate('depgraph', 'Dependency graph report agrees with the gate', 'depgraph:test'),
+  gate('depgraph', 'Dependency graph report model', 'depgraph:test'),
   gate('tmpdir-leaks', 'Leaked test tmpdir detector', 'check:tmpdir-leaks'),
   gate('tmpdir-leaks-model', 'TMPDIR redirection model', 'check:tmpdir-leaks:test'),
   gate('coverage-model', 'Changed-line coverage model', 'check:coverage-changed:test'),