feat(plating): Sub 4 — smart button on part form for Contract Review

Adds a "Contract Review" stat button to fp.part.catalog's button box.
Shows a coloured state badge (green=complete, blue=manager_review,
yellow=assistant_review, muted=dismissed, em-dash when none). Click
routes through action_start_contract_review so it opens the existing
review or lazy-creates one — same behaviour as the banner / tab.

fusion_plating_quality → 19.0.2.2.0

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

fusion_plating/fusion_plating_quality/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Plating — Quality (QMS)',
-    'version': '19.0.2.1.0',
+    'version': '19.0.2.2.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Native QMS for plating shops: NCR, CAPA, calibration, AVL, FAIR, '
                'internal audits, customer specs, document control. CE + EE compatible.',