feat(promote-customer-spec): Phase B — two-picker SO line UX

Spec-side picker (x_fc_customer_spec_id / customer_spec_id) added on:
- sale.order.line (via quality inherit — onchange autofill, create()
  fallback to part default, _prepare_invoice_line carry)
- account.move.line (via quality inherit — invoice rendering)
- fp.part.catalog (via quality inherit — x_fc_default_customer_spec_id)
- fp.direct.order.line (via quality inherit — wizard picker + autofill)
- fp.direct.order.wizard (action_create_order post-creates spec on SO line)

Thickness picker switched to fp.recipe.thickness (replaces coating-scoped):
- sale.order.line.x_fc_thickness_id comodel + domain rewired to recipe
- account.move.line + fp.delivery same
- fp.direct.order.line.thickness_id same

View inherits in quality add Specification picker next to legacy
Primary Treatment column on:
- SO form line tree
- part catalog Default Treatments block
- direct-order wizard line tree + drawer

Wizard files (fp.contract.review.client.email.wizard) pulled from
entech into the repo — they were ahead of the repo. Quality __init__
now imports wizards/.

Legacy x_fc_coating_config_id + treatment_ids remain visible during
transition; Phase E removes them.

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

fusion_plating/fusion_plating_quality/views/fp_direct_order_wizard_views_inherit.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright 2026 Nexa Systems Inc.
+    License OPL-1 (Odoo Proprietary License v1.0)
+    Part of the Fusion Plating product family.
+
+    Adds the Specification picker to the direct-order wizard line.
+-->
+<odoo>
+
+    <record id="view_fp_direct_order_wizard_form_spec_inherit"
+            model="ir.ui.view">
+        <field name="name">fp.direct.order.wizard.form.spec.inherit</field>
+        <field name="model">fp.direct.order.wizard</field>
+        <field name="inherit_id"
+               ref="fusion_plating_configurator.view_fp_direct_order_wizard_form"/>
+        <field name="arch" type="xml">
+            <!-- Wizard line list (main editable rows) -->
+            <xpath expr="//field[@name='line_ids']/list/field[@name='coating_config_id']"
+                   position="after">
+                <field name="customer_spec_id"
+                       string="Specification"
+                       options="{'no_quick_create': True}"
+                       optional="show"/>
+            </xpath>
+            <!-- Wizard line drawer / form view (the "expand line" panel) -->
+            <xpath expr="//field[@name='line_ids']/form//field[@name='coating_config_id']"
+                   position="after">
+                <field name="customer_spec_id"
+                       string="Specification"
+                       options="{'no_quick_create': True}"/>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>

fusion_plating/fusion_plating_quality/views/fp_part_catalog_views_inherit.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright 2026 Nexa Systems Inc.
+    License OPL-1 (Odoo Proprietary License v1.0)
+    Part of the Fusion Plating product family.
+
+    Adds the "Default Specification" picker to the part catalog form
+    next to "Default Treatment". Phase E removes the legacy field
+    entirely.
+-->
+<odoo>
+
+    <record id="view_fp_part_catalog_form_spec_inherit" model="ir.ui.view">
+        <field name="name">fp.part.catalog.form.spec.inherit</field>
+        <field name="model">fp.part.catalog</field>
+        <field name="inherit_id"
+               ref="fusion_plating_configurator.view_fp_part_catalog_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='x_fc_default_coating_config_id']"
+                   position="after">
+                <field name="x_fc_default_customer_spec_id"
+                       string="Default Specification"
+                       options="{'no_create_edit': True}"/>
+            </xpath>
+        </field>
+    </record>
+
+</odoo>

fusion_plating/fusion_plating_quality/views/sale_order_views_inherit.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright 2026 Nexa Systems Inc.
+    License OPL-1 (Odoo Proprietary License v1.0)
+    Part of the Fusion Plating product family.
+
+    Adds the Specification picker to the SO line tree (the configurator's
+    main editable line list inside the SO form). The Spec field lives on
+    sale.order.line as an _inherit added in this module, so the view
+    that surfaces it must also live here.
+
+    During Phases B-D the Spec picker sits ALONGSIDE the legacy
+    Primary Treatment picker (both visible). Phase E removes the legacy
+    field entirely.
+-->
+<odoo>
+
+    <!-- Configurator's view_sale_order_form_fp inherits sale.view_order_form
+         and adds Plating fields to the order_line tree. We inherit THAT
+         view to add Specification right after Primary Treatment. -->
+    <record id="view_sale_order_form_quality_inherit" model="ir.ui.view">
+        <field name="name">sale.order.form.quality.spec.inherit</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id"
+               ref="fusion_plating_configurator.view_sale_order_form_fp"/>
+        <field name="arch" type="xml">
+            <!-- Editable order_line tree (estimator's main grid) -->
+            <xpath expr="//field[@name='order_line']/list/field[@name='x_fc_coating_config_id']"
+                   position="after">
+                <field name="x_fc_customer_spec_id"
+                       string="Specification"
+                       options="{'no_quick_create': True}"
+                       optional="show"/>
+            </xpath>
+        </field>
+    </record>
+
+    <!-- The SO list's coating column is on sale.order itself (header
+         field). Adding a parallel spec column on the order header is
+         a Phase B+ enhancement — for now, the line tree (above) is
+         sufficient for the operator. -->
+
+</odoo>