fix(gates): converge the manifest guard on the template's DEED wording

Mirrors `rsr-template-repo/.github/workflows/deed-validate.yml` and standards#837 step 4. No
`.a2ml` document is translated and no retained-input gate is touched.

Author: hyperpolymath

.github/workflows/dogfood-gate.yml

@@ -30,7 +30,7 @@ jobs:
           COUNT=$(find . \( -name '*.a2ml' -o -name '*.deed' \) -not -path './.git/*' | wc -l)
           echo "count=$COUNT" >> "$GITHUB_OUTPUT"
           if [ "$COUNT" -eq 0 ]; then
-            echo "::warning::No .a2ml/.deed manifest files found. Every RSR repo should have a repo deed (<reponame>_chora.deed); legacy 0-AI-MANIFEST.a2ml accepted mid-migration — a2ml retired: standards #837"
+            echo "::warning::No .a2ml/.deed manifest files found. Every RSR repo should have a repo deed (<reponame>_chora.deed); legacy 0-AI-MANIFEST.a2ml accepted mid-migration — standards #837"
           fi
       - name: Validate DEED manifests
         if: steps.detect.outputs.count > 0
@@ -45,7 +45,7 @@ jobs:
             cat <<'EOF' >> "$GITHUB_STEP_SUMMARY"
           ## DEED Manifest Validation
 
-          :warning: **No .a2ml files found.** Every RSR-compliant repo should have at least `0-AI-MANIFEST.a2ml`.
+          :warning: **No .a2ml/.deed manifest files found.** Every RSR-compliant repo should have a repo deed (`<reponame>_chora.deed`) at its root.
 
           Copy it from [rsr-template-repo](https://github.com/hyperpolymath/rsr-template-repo). Manifests are validated against the DEED grammar (standards `1-formats/deed/`); the `.a2ml` → `.deed` extension migration is tracked in standards #837 — the deed validator scans both.
           EOF
@@ -90,7 +90,7 @@ jobs:
             cat <<'EOF' >> "$GITHUB_STEP_SUMMARY"
           ## K9 Contract Validation
 
-          :warning: **No K9 contract files found.** Repos with configuration files should have K9 contracts.
+          :warning: **No .a2ml/.deed manifest files found.** Every RSR-compliant repo should have a repo deed (`<reponame>_chora.deed`) at its root.
 
           Generate contracts with: `k9iser generate .`
           EOF
@@ -346,7 +346,7 @@ jobs:
 
           | Tool/Format | Status | Notes |
           |-------------|--------|-------|
-          | DEED manifest (<reponame>_chora.deed, or legacy .a2ml) | ${DEED_STATUS} | Required for all RSR repos |
+          | DEED repo deed (`<reponame>_chora.deed`) | ${DEED_STATUS} | Required for all RSR repos |
           | K9 contracts | ${K9_STATUS} | Required for repos with config files |
           | .editorconfig | ${EC_STATUS} | Required for all repos |
           | Groove endpoint | ${GROOVE_STATUS} | Required for service repos |