feat(fusion_plating): internal sticker = external layout w/ internal notes + Receiving print buttons

- Internal Job Sticker is no longer a separate Layout A: it's now a COPY of the
  External sticker (Layout B, one per box, logo + WO + BOX + QR + rail fields +
  prominent PLATING THICKNESS banner) but feeds the INTERNAL description and
  labels its notes "INTERNAL NOTES" so the shop copy can't be confused with the
  customer copy. The old Layout-A body template is deleted.
- Removed the Internal sticker from the fp.job Print menu (binding_model_id ->
  False); it now prints from the Receiving screen instead.
- Added "External Sticker" + "Internal Sticker" print buttons to the fp.receiving
  form header (shown once a WO exists). Each renders one label per tracked box
  for the receiving's work order (passes a single WO so the SO-scoped box loop
  doesn't reprint each label per job).
Verified on entech (WO-30094 / RCV-30096): internal renders Layout B with the
internal description + INTERNAL NOTES; external unchanged; both receiving buttons
return the right report actions.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

fusion_plating/fusion_plating_jobs/models/fp_receiving.py

@@ -8,6 +8,7 @@
 # reaches state='done'.
 
 from odoo import _, fields, models
+from odoo.exceptions import UserError
 
 
 class FpReceiving(models.Model):
@@ -65,3 +66,34 @@ class FpReceiving(models.Model):
         if len(jobs) == 1:
             action.update({'view_mode': 'form', 'res_id': jobs.id})
         return action
+
+    # ---- Sticker printing from the Receiving screen (2026-06-04) ----------
+    # Both stickers loop the SO's boxes (one label per box). Pass a SINGLE
+    # work order: the box loop is sale-order-scoped, so feeding every job
+    # would reprint each box label once per job. One job → exactly one label
+    # per box. Falls back to a single 1/1 label when no boxes exist yet.
+    def _fp_sticker_jobs(self):
+        self.ensure_one()
+        if not self.sale_order_id:
+            return self.env['fp.job']
+        return self.env['fp.job'].sudo().search(
+            [('sale_order_id', '=', self.sale_order_id.id)], order='id', limit=1)
+
+    def _fp_print_sticker(self, xmlid):
+        self.ensure_one()
+        jobs = self._fp_sticker_jobs()
+        if not jobs:
+            raise UserError(_(
+                'No work order exists for this receiving yet — create the '
+                'Work Order before printing stickers.'))
+        return self.env.ref(xmlid).report_action(jobs)
+
+    def action_print_external_sticker(self):
+        """Customer (external) box sticker(s) for this receiving's WO."""
+        return self._fp_print_sticker(
+            'fusion_plating_jobs.action_report_fp_job_sticker')
+
+    def action_print_internal_sticker(self):
+        """Shop (internal) box sticker(s) — same layout, internal notes."""
+        return self._fp_print_sticker(
+            'fusion_plating_jobs.action_report_fp_job_sticker_internal')