8a8c3634e8
HERMES_DELEGATED_CHILD_CONTEXT=1 is deliberately carried into every shell/ execute_code subprocess a delegate_task child spawns (the fence must survive exec so a grandchild `hermes kanban complete` cannot promote itself). But the readers treated the bare flag as "fence every Kanban DB": kanban_db_connect opened ANY board ?mode=ro and write_txn refused ANY mutation. A subagent running a Kanban reproduction against a scratch HERMES_HOME therefore got a silently read-only board with a misleading "descendants require an initialized board" error; only one lane in the retrospective ever discovered why (deleg_15dac332), every earlier kanban repro ran degraded. The marker's value is now the fenced board ROOT (kanban_home() at spawn) and readers deny only paths under that root or the dispatcher-pinned HERMES_KANBAN_DB (kanban_path_is_fenced). In-process children and a legacy "1" marker still fence everything; an inherited path marker is never re-derived, so a grandchild that moved HERMES_HOME cannot unfence the real board. Owner-gate tests (test_kanban_descendant_scope, cron env isolation, kanban CLI exit status) are unchanged and green.