refactor(plating-sec): sweep all ACL CSVs to new role group xmlids

Phase B of permissions overhaul. Mechanical text replacement across
11 ir.model.access.csv files:
  - group_fusion_plating_operator    -> fusion_plating.group_fp_technician
  - group_fusion_plating_supervisor  -> fusion_plating.group_fp_shop_manager_v2
  - group_fusion_plating_manager     -> fusion_plating.group_fp_manager
  - group_fusion_plating_admin       -> fusion_plating.group_fp_owner
  - group_fp_estimator (configurator)-> fusion_plating.group_fp_sales_rep
  - group_fp_accounting              -> fusion_plating.group_fp_manager
  - group_fp_receiving               -> fusion_plating.group_fp_shop_manager_v2
  - group_fp_shop_manager (legacy)   -> fusion_plating.group_fp_manager
  - group_fusion_plating_cgp_officer -> fusion_plating.group_fp_quality_manager
  - group_fusion_plating_cgp_designated_official -> fusion_plating.group_fp_owner

Backward-compat: old group xmlids still resolve (Phase A's implied_ids
chains keep old ACLs working for users still holding old groups).
This sweep ensures future-state correctness: when old groups are deleted
after the 30-day rollback window, ACLs continue resolving via the new
group xmlids.

Also adds fusion_plating/tests/test_acl_migration.py with sample-based
per-role access checks. The 2 CAPA tests are expected to fail until
Phase C implements the Manager/QM quality split.

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

fusion_plating/fusion_plating/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating',
-    'version': '19.0.21.0.0',
+    'version': '19.0.21.0.1',
     'category': 'Manufacturing/Plating',
     'summary': 'Core plating / metal finishing ERP: facilities, processes, tanks, baths, jobs, operators.',
     'description': """