Fabrik als Provider Korrigiert

backend/app/providers/utils.py

@@ -0,0 +1,16 @@
+import unicodedata
+
+
+def normalize_search_text(value: str | None) -> str:
+    if not value:
+        return ""
+
+    value = (
+        value.casefold()
+        .replace("ä", "ae")
+        .replace("ö", "oe")
+        .replace("ü", "ue")
+        .replace("ß", "ss")
+    )
+    normalized = unicodedata.normalize("NFKD", value)
+    return "".join(char for char in normalized if not unicodedata.combining(char))