feat: add shared child batch creation

dist/release-manifest.json

@@ -1,8 +1,8 @@
 {
   "manifest_version": 1,
-  "generated_on": "2026-09-07",
+  "generated_on": "2026-09-08",
   "baselines": {
-    "chrome_extension": "0.5.169",
+    "chrome_extension": "0.5.170",
     "skills": "0.5.126",
     "business_instruction_docx": "0.5.126",
     "agent_prompt": "ltjt-agent-prompt-v1.8-independent-headcount-categories"
@@ -10,10 +10,10 @@
   "artifacts": [
     {
       "kind": "chrome_extension",
-      "version": "0.5.169",
-      "path": "dist/ltjt-order-assistant-0.5.169.zip",
+      "version": "0.5.170",
+      "path": "dist/ltjt-order-assistant-0.5.170.zip",
       "source": "chrome-extension/ltjt-order-assistant",
-      "sha256": "00ad06a1640d36cfe7df8c9e52d677131793c70d493392b551b7ecbd965c854b"
+      "sha256": "c041d13f468f46f1130668ae67701342b0dd920c5be20c5b47b97732384f48d8"
     },
     {
       "kind": "skill",