feat(plating): fully bilingual CoC — all labels EN/FR

Convert every remaining CoC label from single-language (is_fr branch) to
bilingual EN/FR: document title, customer block (Name / Address / Contact /
Email / Phone), Fischerscope thickness report title + metadata (Equipment /
Product / Application / Directory / Calibration Std. / Operator / Measured /
Measuring Time), reading stats (Mean / Std Dev / Range), Source file,
Certified By, Name, and the Certification Statement heading. The statement
paragraph now prints both English and French. Reuses the SO report's inline
.fp-bl-en/.fp-bl-fr bilingual classes. Bump reports 19.0.11.30.0.

Deployed + render-verified on entech (CoC-30059 with thickness block, 243KB).

Co-Authored-By: Claude Opus 4.7 <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': '19.0.11.29.0',
+    'version': '19.0.11.30.0',
     'category': 'Manufacturing/Plating',
     'summary': 'PDF reports for Fusion Plating: quote, SO, WO, packing, BoL, CoC, invoice, receipt, quality + compliance.',
     'depends': [