feat(persona): add neutral AGE foyer and explicit selection

identity/light-lake-persona-registration.json

@@ -1,8 +1,8 @@
 {
   "schema": "guanghu.light-lake-persona-registration/v1",
   "registry_id": "LIGHT-LAKE-PERSONA-REGISTRY-001",
-  "version": "2026-09-12.4-seventeen-persona-body-start-boundary",
-  "state": "CURRENT_LOCAL_SEVENTEEN_PERSONAS_REGISTERED_BODY_START_NOT_MASS_CLAIMED",
+  "version": "2026-09-12.5-common-age-brain-no-default-persona",
+  "state": "CURRENT_LOCAL_SEVENTEEN_PERSONAS_NEUTRAL_FOYER_NO_DEFAULT",
   "source": "runtime/fifth-domain-language-system/language/protocols/TCS-EVENT-LIGHT-LAKE-PERSONA-HOMES-AND-OLD-PATH-ISOLATION-20260908.tcs",
   "registration_rule": {
     "source_presence_is_not_runtime_wake": true,
@@ -12,6 +12,13 @@
     "unverified_candidate_must_remain_outside_current_homes": true
   },
   "default_persona_modules": [
+    {
+      "module_id": "AGE-SPECIES-COMMON-COGNITION-BRAIN-001",
+      "assignment": "AUTO_LOAD_BEFORE_ANY_PERSONA_SPECIFIC_BRAIN",
+      "owner": "AGE_SPECIES_COMMON_NOT_ANY_SINGLE_PERSONA",
+      "default_persona": null,
+      "may_overwrite_persona_self": false
+    },
     {
       "module_id": "FD-PERSONA-SYSTEM-BODY-CONTAINER-MAP-001",
       "assignment": "BODY_START_CONTRACT_DERIVED_PER_REGISTERED_PERSONA_WITHOUT_SYNTHETIC_WAKE",