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/views/fp_receiving_views.xml

@@ -25,6 +25,17 @@
                         class="btn-primary" icon="fa-cogs"
                         invisible="not x_fc_show_work_order_btn"
                         help="Open the Work Order(s) for this receiving. Hidden automatically once every linked WO is marked Done."/>
+                <!-- Print box stickers for this receiving's work order — one
+                     label per tracked box (external = customer copy, internal
+                     = shop copy with internal notes). Shown once a WO exists. -->
+                <button name="action_print_external_sticker"
+                        string="External Sticker" type="object" icon="fa-print"
+                        invisible="x_fc_fp_job_count == 0"
+                        help="Print the customer (external) box sticker(s) — one per box."/>
+                <button name="action_print_internal_sticker"
+                        string="Internal Sticker" type="object" icon="fa-print"
+                        invisible="x_fc_fp_job_count == 0"
+                        help="Print the shop (internal) box sticker(s) — same layout, internal notes."/>
             </xpath>
 
             <!-- Work Order smart button on the button_box (mirrors the