Record Opus-selected Astra P18 implementation dispatch

docs/plans/original-completion-2026-10-02/work_packages.json

@@ -8503,7 +8503,7 @@
     },
     "legacy_state": "planned",
     "state_scope": "package-level; completed means whole package accepted; partial implementation is not completion",
-    "current_summary": "P18-01 actual original/legacy save audit and backend implementation contract prepared. Opus5.5 recommends Astra for migration/atomic restore complexity. Backend code phase remains part of P18-01; no new delivery unit and no acceptance yet. UI and approved initialization remain unmet.",
+    "current_summary": "P18-01 code phase registered at base d2a1f80 and actually implementing with gpt-6-astra selected by Opus5.5. Original model/legacy raw preservation/Runtime save and read-model scoped; UI and initialization values remain unmet. No new delivery unit or acceptance.",
     "remaining_deliverables": [
       {
         "id": "P18-01",
@@ -8527,7 +8527,7 @@
           }
         ],
         "updated_at_jst": "2026-10-13T14:01:57.377446+09:00",
-        "progress_summary": "P18-01 actual original/legacy save audit and backend implementation contract prepared. Opus5.5 recommends Astra for migration/atomic restore complexity. Backend code phase remains part of P18-01; no new delivery unit and no acceptance yet. UI and approved initialization remain unmet.",
+        "progress_summary": "P18-01 code phase registered at base d2a1f80 and actually implementing with gpt-6-astra selected by Opus5.5. Original model/legacy raw preservation/Runtime save and read-model scoped; UI and initialization values remain unmet. No new delivery unit or acceptance.",
         "remaining_gaps": [
           "Implement original three-axis meaning and protagonist Affection-bound shield maximum across model/UI/save.",
           "Preserve old generic five-axis facts without guessed migration; pin new/old/missing/unknown/corrupt save contract.",