feat(sticker): add Internal Sticker variant on sale.order Print menu

Same 3-cell + body layout as External; Notes column reads
x_fc_internal_description (Sub 2 internal-description field on the
SO line) instead of line.name. Shop floor gets ops-facing notes
without leaking them to the customer-facing variant.

New action record action_report_fp_so_sticker_internal — binds to
sale.order, appears in the Print menu next to the existing External
sticker. New template report_fp_so_sticker_internal that pre-sets
_notes_content before t-calling the shared inner.

Verified on SO-30019 with a seeded internal_description: Notes
column reads "INTERNAL: rework if any dings on flange. Buff per
WI-104." — confirms the override path is wired through the
defaults-block initialiser, the inner's fallback chain, and the
new outer template.

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

fusion_plating/fusion_plating_reports/__manifest__.py

@@ -3,7 +3,7 @@
 # License OPL-1 (Odoo Proprietary License v1.0)
 {
     'name': 'Fusion Plating — Reports',
-    'version': '19.0.10.13.0',
+    'version': '19.0.10.14.0',
     'category': 'Manufacturing/Plating',
     'summary': 'PDF reports for Fusion Plating: quote, SO, WO, packing, BoL, CoC, invoice, receipt, quality + compliance.',
     'depends': [