feat(numbering): block direct invoice creation + wire account.move into mixin

Customer invoices (out_invoice / out_refund) can only be created via
sale.order._create_invoices() or with an invoice_origin matching an
existing SO. Applies to ALL users including admins. Once created,
the move's name is derived from the SO's parent number: IN-30000,
IN-30000-02, CN-30000, ... Pre-existing portal-job link on
action_post() preserved.

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

fusion_plating/fusion_plating_jobs/__manifest__.py

@@ -3,7 +3,7 @@
 # License OPL-1 (Odoo Proprietary License v1.0)
 {
     'name': 'Fusion Plating — Native Jobs',
-    'version': '19.0.8.22.3',
+    'version': '19.0.8.22.4',
     'category': 'Manufacturing/Plating',
     'summary': 'Native plating job model — replaces mrp.production / mrp.workorder bridge.',
     'author': 'Nexa Systems Inc.',