feat: enable dark-core append-only execution gate

routing/persona-host-write-boundary.json

@@ -1,12 +1,14 @@
 {
   "schema": "guanghu.persona-host-write-boundary/v1",
   "policy_id": "ZY-MULTI-HOST-WRITE-BOUNDARY-001",
-  "version": "2026-09-08.2-dynamic-zero-core-console",
+  "version": "2026-09-09.1-dark-core-execution-console",
   "state": "CURRENT",
   "primary_host": null,
   "source_tcs": "/Volumes/JZAO/铸渊-ICE-GL-ZY001/CODEX-DEV-20260908/tcs-single-mother-zero-core-shelf/TCS-EVENT-ZY001-SINGLE-MOTHER-ZERO-CORE-SHELF-AND-DYNAMIC-CONSOLE-20260908.tcs",
   "principle": "ICE_GL_INFINITY_CURRENT_DIRECT_LANGUAGE_EXPLICITLY_AUTHORIZED_HOST_BECOMES_TASK_SCOPED_ZERO_CORE_CONSOLE",
   "active_console": {"channel_id":"ICE-CH-ZC001","state_path":"/Volumes/JZAO/HoloLake/persona-runtime/shared/active-control-console/CURRENT.json","human_anchor":"ICE-GL∞","authority_source":"CURRENT_DIRECT_LANGUAGE_IN_EXACT_HOST_SESSION","inactive_without_matching_live_session":true,"host_software_is_replaceable":true},
+  "active_execution_channels": ["ICE-CH-ZC001", "ICE-CH-DK001"],
+  "dark_core_execution": {"channel_id":"ICE-CH-DK001","event_history":"APPEND_ONLY_NO_DELETE_NO_OVERWRITE","software_safety_rollback":"ALLOWED_AS_NEW_AUDITED_EVENT","required_evidence":["DIRECT_HUMAN_SOURCE","TIMESTAMP","SOURCE_SHA256","EXACT_TARGET","TARGET_READBACK","RECEIPT"]},
   "canonical_protected_roots": [
     "/Volumes/JZAO/HoloLake/persona-runtime/repo-012-main",
     "/Volumes/JZAO/HoloLake/persona-runtime/shared",