feat(claims): audit trail honours bundled pages flag

x_fc_trail_has_signed_pages now reads x_fc_has_signed_pages_11_12, so
the trail correctly shows complete when pages 11 & 12 are bundled inside
the original application.

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

fusion_claims/tests/test_signed_pages_gate.py

@@ -58,3 +58,16 @@ class TestSignedPagesGate(TransactionCase):
         })
         self.order.invalidate_recordset()
         self.assertFalse(self.order.x_fc_has_signed_pages_11_12)
+
+    def test_trail_has_signed_pages_true_when_bundled(self):
+        self.order.x_fc_pages_11_12_in_original = True
+        self.order.flush_recordset()
+        self.assertTrue(self.order.x_fc_trail_has_signed_pages)
+
+    def test_trail_has_signed_pages_false_when_nothing(self):
+        self.assertFalse(self.order.x_fc_trail_has_signed_pages)
+
+    def test_trail_has_signed_pages_true_when_separate_file(self):
+        self.order.x_fc_signed_pages_11_12 = _b64_pdf()
+        self.order.flush_recordset()
+        self.assertTrue(self.order.x_fc_trail_has_signed_pages)