chore: finalize integrated release baseline

mappings/lifecycle.mapping.json

@@ -1,7 +1,7 @@
 {
   "contract_version": "ltjt-lifecycle-v2.9-roster-leader-contact-2026-08",
   "current_agent_parse_prompt_version": "ltjt-agent-prompt-v1.8-independent-headcount-categories",
-  "current_extension_version": "0.5.168",
+  "current_extension_version": "0.5.169",
   "historical_test_marker": "TEST-202609",
   "scope": "/System/Business/",
   "erp_session_keepalive": {
@@ -114,7 +114,7 @@
     ],
     "metadata_boundary": "session/task IDs, important summaries, confirmations and user communications stay in the platform envelope; they are not Agent operation data or ERP business fields",
     "uncertain_write": "requery_first_no_auto_retry",
-    "reconciliation": "administrator-triggered read-only fresh requery on the same operation/execution; never resubmit the ERP save action",
+    "reconciliation": "immutable-assignee-triggered read-only fresh requery on the same operation/execution; never resubmit the ERP save action",
     "shared_child_identity": "prefer the stable hidden oldtdid parent reference; only fall back to regular tid controls or the URL when oldtdid is absent, and always pair it with the exact child ddid",
     "completed_edit_dialog_cleanup": "after verified ERP evidence, run cleanup from the surviving top page (never from the frame that may navigate on save), require one exact route/reference candidate plus fresh identity proof; explicit test-context tasks additionally require TEST-202609/account/tid/ddid ownership, retry close at most three times, and verify exact iframe detachment",
     "forbidden_side_effects": [