fix(state-hub): STATE-WP-0063 T01/T02/T04 — restore local consistency sync

Point custodian-sync systemd units at /home/worsch/state-hub and uv run;
add infra/systemd templates and README interim guidance. Document T02
diagnosis (activity-core schedules fire; ops-bridge tunnel gaps cause State
Hub connection refused). T04 crontab path fixed locally; T03/T05 remain open.

infra/systemd/custodian-sync.timer

@@ -0,0 +1,11 @@
+[Unit]
+Description=State Hub consistency sync — periodic repo sync (every 15 min)
+Requires=custodian-sync.service
+
+[Timer]
+OnBootSec=5min
+OnUnitActiveSec=15min
+Unit=custodian-sync.service
+
+[Install]
+WantedBy=timers.target