chore(plating): de-dash shipped code + intake-neutral customer emails

Replace em-dashes and en-dashes with hyphens across 789 shipped source
files (py/xml/js/scss) so the delivered module reads as human-written;
em-dashes had become a recognizable AI-generated tell. Internal .md dev
notes are excluded. The WO-sticker mojibake strippers keep their dash
search targets (now written — / –). No logic changes: comments
and display strings only; validated with py_compile + lxml parse.

Rewrite the 7 customer notification emails to be intake-neutral
(ship-in / drop-off / pickup) and repair-aware, and fix the Shipped
email documents line (packing slip vs bill of lading; certificate only
when issued). Subjects use a hyphen separator.

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

fusion_plating/fusion_plating_notifications/models/sale_order.py

@@ -45,7 +45,7 @@ class SaleOrder(models.Model):
 
     # NOTE: we intentionally do NOT override action_quotation_send to
     # fire the quote_sent trigger. action_quotation_send returns a
-    # compose-dialog action synchronously — if we dispatch here the
+    # compose-dialog action synchronously - if we dispatch here the
     # email is already sent by the time the user sees the dialog and
     # decides to Cancel.
     #