schemas: MeshActionRegistry adds implementsAbb — participants declare their ABB slots

examples/mesh-action-registry.example.json

@@ -15,13 +15,15 @@
       "manifestRef": "https://raw.githubusercontent.com/SocioProphet/Noetica/main/.sourceos/manifest.json",
       "catalogRef": "https://raw.githubusercontent.com/SocioProphet/Noetica/main/agent-machine/lib/action-registry.ts",
       "catalogDigest": "sha256:1111111111111111111111111111111111111111111111111111111111111111",
-      "verbOntologyRef": "https://raw.githubusercontent.com/SocioProphet/Noetica/main/agent-machine/data/verb-ontology.json"
+      "verbOntologyRef": "https://raw.githubusercontent.com/SocioProphet/Noetica/main/agent-machine/data/verb-ontology.json",
+      "implementsAbb": ["ABB.02"]
     },
     {
       "repo": "SourceOS-Linux/agent-machine",
       "manifestRef": "https://raw.githubusercontent.com/SourceOS-Linux/agent-machine/main/.sourceos/manifest.json",
       "catalogRef": "https://raw.githubusercontent.com/SourceOS-Linux/agent-machine/main/src/agent_machine/actions.py",
-      "catalogDigest": "sha256:2222222222222222222222222222222222222222222222222222222222222222"
+      "catalogDigest": "sha256:2222222222222222222222222222222222222222222222222222222222222222",
+      "implementsAbb": ["ABB.01", "ABB.02"]
     }
   ]
 }

schemas/MeshActionRegistry.json

@@ -80,6 +80,16 @@
           "type": "string",
           "format": "uri-reference",
           "description": "Optional pointer to the verb ontology the participant classifies against — see Noetica's verb-ontology.json. Absent means the participant does not classify its actions with verbs, which is a weaker claim (Apple's 4-primitive shape); present with a mismatched ontologyVersion is a decision the consumer must adjudicate."
+        },
+        "implementsAbb": {
+          "type": "array",
+          "minItems": 0,
+          "uniqueItems": true,
+          "items": {
+            "type": "string",
+            "pattern": "^ABB\\.[0-9]{2}$"
+          },
+          "description": "ABB identifiers this participant fills, per https://schemas.srcos.ai/v2/ArchitecturalBuildingBlock.json. Absent or empty means the participant is not claimed as a slot filler for any registered ABB — the consumer walking the registry for an ABB will not consider it. Non-empty means each listed ABB is an implementation contract the participant asserts it satisfies. Verification is the consumer's job (walk the ABB's protocol + requiredCapabilities, confirm the participant delivers each) — this field only establishes the CLAIM, not its truth. That split matters: a validator here could reject an unknown ABB.NN, but cannot know whether the participant actually satisfies its protocol without running the caller."
         }
       }
     }

tools/validate_mesh_action_registry.py

@@ -103,6 +103,24 @@ def broken(mutation) -> dict:
     case("id URN not the mesh-action-registry namespace",
          broken(lambda b: b.__setitem__("id", "urn:srcos:something:x")), False)
 
+    # implementsAbb — new field. Absent is fine (participant claims no ABB slots); present must be
+    # non-empty when set, and each entry must match the ABB.NN pattern.
+    print("  implementsAbb")
+    case("implementsAbb absent (participant claims no ABB slots)",
+         broken(lambda b: b["participants"][0].pop("implementsAbb", None)), True)
+    case("implementsAbb with a valid ABB claim",
+         broken(lambda b: b["participants"][0].__setitem__("implementsAbb", ["ABB.03"])), True)
+    case("implementsAbb with multiple valid ABB claims",
+         broken(lambda b: b["participants"][0].__setitem__("implementsAbb", ["ABB.03", "ABB.07"])), True)
+    case("implementsAbb non-conforming pattern (bare number)",
+         broken(lambda b: b["participants"][0].__setitem__("implementsAbb", ["3"])), False)
+    case("implementsAbb non-conforming pattern (three digits)",
+         broken(lambda b: b["participants"][0].__setitem__("implementsAbb", ["ABB.003"])), False)
+    case("implementsAbb with duplicate ABB entries (uniqueItems)",
+         broken(lambda b: b["participants"][0].__setitem__("implementsAbb", ["ABB.03", "ABB.03"])), False)
+    case("implementsAbb wrong namespace",
+         broken(lambda b: b["participants"][0].__setitem__("implementsAbb", ["ARC.03"])), False)
+
     case("undeclared property on a participant (schema is closed)",
          broken(lambda b: b["participants"][0].__setitem__("zzUnknown", "leak")), False)