test(nomercy): pre-4.1 host-reboot marker (committing before host reboot, guardrail 8)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PsnU2ASocYrvzqE82YDYW

documentation/tests/TEST-REPORT-stable-path-sysdrive-restart-2026-06-23.md

@@ -281,7 +281,11 @@ finding (F1).
 durability win — drives stable, sys_drive separate, apps recreated, registry intact, no placeholders (3.3).
 The controller-only restart keeps the guest + customer apps running but **does bounce FileBrowser** (F2).
 
-## Phase 4 — host reboot + chaos — ⏳ PENDING
+## Phase 4 — host reboot + chaos — ⏳ IN PROGRESS
+
+Pre-host-reboot capture: `sdb1`=`da9e7089`(usb), `sdc1`=`81a26531`(flash); `onboot: 0`;
+`felhom-agent` service `enabled` (will auto-start on host boot). navidrome on flash, radarr on sys_drive.
+**Prediction:** with `onboot: 0`, 9201 will NOT auto-start after the host reboot (candidate finding F3).
 
 ## Phase 5 — restore to clean baseline — ⏳ PENDING