fix: preserve correction and legacy authority semantics

jarca_ledger_mcp/application/assets_service.py

@@ -573,8 +573,10 @@ def get_asset_snapshot_report(basis_date: str = "", selection_policy: str = "exa
     basis = normalize_date(basis_date, default_today=True) if basis_date else current_kst_date().isoformat()
     with db(db_path) as conn:
         rows, close_metadata = _snapshot_rows_for_latest_run(conn, basis)
+        has_close_run = bool(close_metadata.get("snapshot_run_id"))
         snapshots = _snapshot_items(conn, basis) if rows else []
-        if close_metadata:
+        legacy_snapshots = snapshots if rows and not has_close_run else []
+        if has_close_run:
             summary = _summarize_valuation_items(snapshots, [])
             return ok(
                 basis_date=basis,
@@ -590,6 +592,19 @@ def get_asset_snapshot_report(basis_date: str = "", selection_policy: str = "exa
         manual_items, manual_excluded = _manual_asset_valuation_items(conn, basis_date=basis, selection_policy=selection_policy)
     included = account_items + manual_items
     excluded = account_excluded + manual_excluded
+    if not included and not excluded and legacy_snapshots:
+        summary = _summarize_valuation_items(legacy_snapshots, [])
+        return ok(
+            basis_date=basis,
+            source="legacy_asset_snapshots",
+            selection_policy=selection_policy,
+            close_status="legacy_read_only",
+            is_closed_snapshot=False,
+            snapshot_count=len(legacy_snapshots),
+            legacy_snapshot_row_count=len(legacy_snapshots),
+            close_metadata={"legacy": True, "snapshot_run_id": ""},
+            **summary,
+        )
     summary = _summarize_valuation_items(included, excluded)
     return ok(
         basis_date=basis,
@@ -598,6 +613,7 @@ def get_asset_snapshot_report(basis_date: str = "", selection_policy: str = "exa
         close_status="incomplete_draft" if excluded else "complete_exact",
         is_closed_snapshot=False,
         snapshot_count=0,
+        legacy_snapshot_row_count=len(legacy_snapshots),
         invalid_bucket_accounts=invalid_bucket_accounts,
         **summary,
     )