docs(141): regenerate BACKLOG.md after issue closure

Co-Authored-By: Claude <noreply@anthropic.com>

Author: davidmatousek

docs/product/_backlog/BACKLOG.md

@@ -1,6 +1,6 @@
 # Backlog
 
-> Auto-generated from GitHub Issues on 2026-04-12T20:00:59Z.
+> Auto-generated from GitHub Issues on 2026-04-12T20:02:24Z.
 > Source of truth: GitHub Issues with `stage:*` labels.
 > Regenerate: `/aod.status` or `.aod/scripts/bash/backlog-regenerate.sh`
 
@@ -42,7 +42,7 @@
 
 | # | Title | Delivered | Retro | Updated |
 |---|-------|-----------|-------|---------|
-| #141 | MAESTRO Phase 2: Cross-layer attack chain analysis | 2026-04-12 | — | 2026-04-12 |
+| — | *No items in this stage* | | |
 
 ## Untracked