changes

fusion_plating/fusion_plating_bridge_sign/models/fp_fair.py

@@ -95,10 +95,20 @@ class FpFair(models.Model):
         }
 
     def action_view_signed_document(self):
-        """Open the signed PDF attachment in a new browser tab."""
+        """Open the signed PDF in the fusion_pdf_preview dialog.
+
+        Falls back to a new-tab URL when the helper isn't installed.
+        See CLAUDE.md "PDF Preview" for the contract.
+        """
         self.ensure_one()
         if not self.x_fc_signed_pdf_id:
             return False
+        if hasattr(self.x_fc_signed_pdf_id, 'action_fusion_preview'):
+            return self.x_fc_signed_pdf_id.action_fusion_preview(
+                title=self.x_fc_signed_pdf_id.name or 'Signed FAIR',
+                model_name=self._name,
+                record_ids=self.id,
+            )
         return {
             'type': 'ir.actions.act_url',
             'url': '/web/content/%s?download=true' % self.x_fc_signed_pdf_id.id,