feat(invoicing): strategy auto-fill + hold check + deposit/COD automation + menu

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

fusion-plating/fusion_plating_invoicing/views/sale_order_views.xml

@@ -5,4 +5,21 @@
     Part of the Fusion Plating product family.
 -->
 <odoo>
+
+    <!-- ===== Account hold warning banner on SO form ===== -->
+    <record id="view_sale_order_form_hold_banner" model="ir.ui.view">
+        <field name="name">sale.order.form.fp.hold.banner</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//form/header" position="before">
+                <div class="alert alert-danger" role="alert"
+                     invisible="not partner_id or not partner_id.x_fc_account_hold">
+                    <strong>Account Hold</strong> — This customer is on account hold.
+                    SO confirmation, invoicing, and shipping are blocked for non-managers.
+                </div>
+            </xpath>
+        </field>
+    </record>
+
 </odoo>