fix(plating): Sub 4 — tighten Contract Review checklist columns

The Checklist group used col=\"4\" which stretched each label+field
pair across a quarter of the sheet, producing a big empty gap
between the two columns. Replaced with the idiomatic Odoo two-
nested-group pattern so each column hugs its labels, removing the
dead space. Same fix applied to Section 3.0 and to the Outcome
blocks on both sections.

fusion_plating_quality → 19.0.2.3.0

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': '19.0.2.2.0',
+    'version': '19.0.2.3.0',
     'category': 'Manufacturing/Plating',
     'summary': 'Native QMS for plating shops: NCR, CAPA, calibration, AVL, FAIR, '
                'internal audits, customer specs, document control. CE + EE compatible.',