feat: PDF-Parser VR/HVB/DKB mit Registry und Fixture-Tests

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

finance/app/parsers/detect.py

@@ -1,6 +1,6 @@
 MARKERS = [
     ("vr", ["Volksbank", "Raiffeisenbank", "VR-Bank", "VR Bank"]),
-    ("hvb", ["HypoVereinsbank", "UniCredit"]),
+    ("hvb", ["HypoVereinsbank", "UniCredit", "Unicredit", "HYVEDEMM"]),
     ("dkb", ["Deutsche Kreditbank", "DKB"]),
 ]