docs: drop false bash-tasks cleanup claim (argus nit)

docs/persistence.md

@@ -179,8 +179,8 @@ Under `/var/lib/hyperhive/agents/<name>/`:
   - `bash-tasks/` — task JSON + stdout/stderr files for
     background `bash_run` jobs. JSON files are
     `<id>.json` (status + tails), `<id>.out` / `<id>.err`
-    (full captured output). Cleaned up by the agent after
-    inspecting with `bash_status`.
+    (full captured output). Task files persist until container
+    purge.
   - `hyperhive-events.sqlite` — turn-loop event log.
   - `hyperhive-turn-stats.sqlite` — per-turn timing stats.
   - `hyperhive-model` — single-line model name override file.
@@ -324,3 +324,4 @@ trigger from the `.path` watcher becomes a no-op. Setting it to
 `false` lets re-fires actually re-execute. The trade-off is the
 service unit shows `inactive (dead)` between fires — visible in
 `journalctl` but harmless; the `.path` unit drives the lifecycle.
+