gapfill G3: unify all 5 private row_get onto peer_messages.row_get (approvals, automations, marker_tools, todos, wait_ops; resident import retargeted); semantics identical on None/dict/sqlite3.Row, identity tests added

cloud/resident.py

@@ -89,7 +89,7 @@ from urllib.parse import urlsplit
 
 from cloud.automations import _audit_row as _auto_audit_row
 from cloud.automations import _automation_quota_exceeded
-from cloud.automations import row_get
+from cloud.peer_messages import row_get
 from cloud.db import PostgresIntegrityError as _PgIntegrityError
 
 MIN_INTERVAL_SECONDS = 60