code-to10 v6 A14 batch1: workers F601 duplicates and check_transplant E741 renames

(cherry picked from commit 4411186681584bf55e065c654fe909a3320d4a22)

Reconcile-conflict: test_skill_transplant_prep artifact count — kept HEAD's finalized 0 refs (2026-11-02 user sign-off deleting §4's 6 references, already in target) with incoming's l→line rename; incoming's 6-ref assertion is pre-finalization and must not overwrite.

cloud/workers.py

@@ -719,9 +719,6 @@ def _worker_to_dict(row):
         "address": _get("address"),
         "last_seen": _get("last_seen"),
         "created_at": _get("created_at"),
-        "host": _get("host"),
-        "pid": _get("pid"),
-        "address": _get("address"),
     }