feat(plating-menu): Layer 1+2 — explicit groups on top-level menus + submenus

Phase D Tasks D1-D4 of permissions overhaul. Adds explicit groups=
attributes to:
- 9 top-level Plating menus (matrix per spec Section 2.E)
- Quality submenus: Audits, Customer Specs, AVL → QM-only
- Compliance hub child submenus (CGP, General, Safety, Aerospace,
  Nuclear) → QM-only
- Operations submenus: Maintenance, Move Log, Labor History → Shop
  Manager+; Replenishment Suggestions → Manager+

Replaces fragile inheritance + action-ACL-based visibility with
explicit per-menu gates. Now every role's menu tree is deterministic.

Also adds fusion_plating/tests/test_menu_visibility.py — per-role
matrix tests using ir.ui.menu.search_count with the test user.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_receiving/views/fp_receiving_menu.xml

@@ -29,7 +29,7 @@
               name="Shipping & Receiving"
               parent="fusion_plating.menu_fp_root"
               sequence="15"
-              groups="group_fp_receiving"/>
+              groups="fusion_plating.group_fp_shop_manager_v2"/>
 
     <!-- Inbound (sequences 10–30) -->
     <menuitem id="menu_fp_receiving_all"