feat(configurator): direct-order wizard dual-description inputs + onchange (Sub 2 Task 16)

Adds an `internal_description` text field to the direct-order wizard
line so the shop-floor copy is captured at order entry alongside the
customer-facing text. Picking a template now fires both sides of the
onchange: `line_description` gets `customer_facing_description` (with
fallback to the legacy `description` field for backward compat) and
`internal_description` gets the template's internal text. The
auto-suggest onchange was refactored around a tiny `_apply` helper so
all three fallback paths populate both fields consistently.

The template picker is surfaced as an optional column on the wizard
list (hidden until a part is chosen, domain-scoped to that part) and
as a dedicated labeled row in the per-line form. The internal text
field is also surfaced in the form under "Line Description" so the
estimator can review / edit it before confirm. On create_order, both
`x_fc_description_template_id` and `x_fc_internal_description` are
written through to the generated sale.order.line so the audit trail
and WO printout stay linked.

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

fusion_plating/fusion_plating_configurator/wizard/fp_direct_order_line.py

@@ -125,9 +125,15 @@ class FpDirectOrderLine(models.TransientModel):
     )
     line_description = fields.Text(
         string='Line Description',
-        help='This text becomes the description of the sale order line. '
+        help='Customer-facing text. Becomes the SO line description and '
+             'prints on the acknowledgement, invoice, and packing slip. '
              'Edit freely — your changes override the template.',
     )
+    internal_description = fields.Text(
+        string='Internal Description',
+        help='Shop-floor instructions. Prints on WO / traveler. Never on '
+             'customer docs. Edit freely — your changes override the template.',
+    )
 
     # ---- Missing info per line ----
     is_missing_info = fields.Boolean(
@@ -195,8 +201,22 @@ class FpDirectOrderLine(models.TransientModel):
 
     @api.onchange('description_template_id')
     def _onchange_description_template(self):
+        """Auto-fill both descriptions from the chosen template.
+
+        Customer-facing text lands in `line_description` (ends up on the
+        SO line `name`, prints on customer docs). Internal text lands in
+        `internal_description` (ends up in x_fc_internal_description on
+        the SO line, prints on WO / traveler only). Falls back to the
+        legacy `description` field when the new dual fields are empty so
+        pre-Sub-2 templates keep working.
+        """
         if self.description_template_id:
-            self.line_description = self.description_template_id.description
+            tpl = self.description_template_id
+            customer_text = tpl.customer_facing_description or tpl.description
+            if customer_text:
+                self.line_description = customer_text
+            if tpl.internal_description:
+                self.internal_description = tpl.internal_description
 
     @api.onchange('part_catalog_id', 'coating_config_id')
     def _onchange_suggest_template(self):
@@ -213,14 +233,21 @@ class FpDirectOrderLine(models.TransientModel):
         Template = self.env['fp.sale.description.template']
         partner = self.wizard_id.partner_id
 
+        def _apply(match):
+            self.description_template_id = match.id
+            customer_text = match.customer_facing_description or match.description
+            if customer_text:
+                self.line_description = customer_text
+            if match.internal_description:
+                self.internal_description = match.internal_description
+
         if self.part_catalog_id:
             match = Template.search([
                 ('active', '=', True),
                 ('part_catalog_id', '=', self.part_catalog_id.id),
             ], order='sequence', limit=1)
             if match:
-                self.description_template_id = match.id
+                _apply(match)
-                self.line_description = match.description
                 return
 
         if partner:
@@ -230,8 +257,7 @@ class FpDirectOrderLine(models.TransientModel):
                 ('partner_id', '=', partner.id),
             ], order='sequence', limit=1)
             if match:
-                self.description_template_id = match.id
+                _apply(match)
-                self.line_description = match.description
                 return
 
         if self.coating_config_id:
@@ -242,8 +268,7 @@ class FpDirectOrderLine(models.TransientModel):
                 ('coating_config_id', '=', self.coating_config_id.id),
             ], order='sequence', limit=1)
             if match:
-                self.description_template_id = match.id
+                _apply(match)
-                self.line_description = match.description
 
     # ---- Helpers ----
     def _get_or_bump_revision(self):

fusion_plating/fusion_plating_configurator/wizard/fp_direct_order_wizard.py

@@ -259,6 +259,8 @@ class FpDirectOrderWizard(models.TransientModel):
                 'product_uom_qty': line.quantity,
                 'price_unit': line.unit_price or 0.0,
                 'x_fc_part_catalog_id': part.id,
+                'x_fc_description_template_id': line.description_template_id.id or False,
+                'x_fc_internal_description': line.internal_description or False,
                 'x_fc_coating_config_id': line.coating_config_id.id,
                 'x_fc_treatment_ids': [(6, 0, line.treatment_ids.ids)],
                 'x_fc_part_deadline': line.part_deadline,

fusion_plating/fusion_plating_configurator/wizard/fp_direct_order_wizard_views.xml

@@ -98,6 +98,13 @@
                                            context="{'default_partner_id': parent.partner_id}"
                                            domain="[('partner_id', '=', parent.partner_id), ('is_latest_revision', '=', True)]"
                                            options="{'no_create_edit': True}"/>
+                                    <field name="description_template_id"
+                                           domain="[('part_catalog_id', '=', part_catalog_id)]"
+                                           options="{'no_create': True}"
+                                           invisible="not part_catalog_id"
+                                           optional="hide"/>
+                                    <field name="internal_description"
+                                           optional="hide"/>
                                     <field name="coating_config_id"/>
                                     <field name="treatment_ids"
                                            widget="many2many_tags"
@@ -159,9 +166,16 @@
                                         <field name="description_template_id"
                                                options="{'no_create': True, 'no_open': True}"
                                                placeholder="Start typing to search saved descriptions..."/>
+                                        <label for="line_description"
+                                               string="Customer-Facing"/>
                                         <field name="line_description"
                                                nolabel="1" colspan="2"
-                                               placeholder="Pick a template above, then tweak the text here."/>
+                                               placeholder="Prints on SO, invoice, packing slip. Pick a template above, then tweak the text here."/>
+                                        <label for="internal_description"
+                                               string="Internal (WO / Traveler)"/>
+                                        <field name="internal_description"
+                                               nolabel="1" colspan="2"
+                                               placeholder="Shop-floor instructions. Never shown to the customer."/>
                                     </group>
                                     <group string="Work Order (internal)">
                                         <field name="part_wo_description"