diff --git a/.gitignore b/.gitignore
index ef2f6711..ab3f93ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -105,3 +105,6 @@ studio-shots/
 # session-local physics capture artifacts (worktree root)
 /resolve-*.jsonl
 /launch-*.log
+
+# Campaign V capture/evidence output - session-local, never tracked (423 MB lesson, 2026-07-29)
+artifacts/
diff --git a/docs/plans/2026-07-27-vulkan-campaign.md b/docs/plans/2026-07-27-vulkan-campaign.md
index f98fa3d4..44c636e7 100644
--- a/docs/plans/2026-07-27-vulkan-campaign.md
+++ b/docs/plans/2026-07-27-vulkan-campaign.md
@@ -3483,6 +3483,15 @@ terminate the session executing the overnight goal. The rerun list below therefo
 stands as the FIRST morning action after the user reboots; tonight's negative is
 recorded so nobody re-bisects the tree for a machine fault.
 
+**Refined diagnosis, 04:1x:** the fault correlates with a SESSION TRANSITION, not a
+driver crash: quser showed `rdp-tcp#0` all day and shows `console` now -- the user's
+RDP disconnect handed the session to the physical console with the monitor powered
+off. Display topology is intact (2560x1440 enumerated; monitor device present,
+status Unknown = off). A user-level ChangeDisplaySettings mode reset returned
+DISP_CHANGE_SUCCESSFUL but did NOT clear the WSI failure (third gate attempt, same
+signature). Morning remediation, cheapest first: (1) turn the monitor ON; (2)
+reconnect the RDP session; (3) reboot. Any of the three, then the SS 5.5.24 rerun list.
+
 
 **The deletion is done and the static gates pass.** Five commits removed 27,607
 lines against 1,870 added. What went is listed in the V11 row; what stayed, and