fix mcp tool name

app.py

@@ -530,7 +530,7 @@ def search_heatpump(
     article_number: str = "", 
     heating_power_min: str = "", 
     heating_power_max: str = "", 
-    type: str = ""
+    heatpump_type: str = ""
 ) -> str:
     """
     Search for specific heat pump by criteria.
@@ -541,7 +541,7 @@ def search_heatpump(
         article_number (str): Article number (optional)
         heating_power_min (str): Minimum heating power in kW (optional)
         heating_power_max (str): Maximum heating power in kW (optional)
-        type (str): Heat pump type (e.g., 'Luft-Wasser') (optional)
+        heatpump_type (str): Heat pump type (e.g., 'Luft-Wasser') (optional)
     
     Returns:
         str: JSON array of matching heat pumps with their specifications
@@ -580,10 +580,10 @@ def search_heatpump(
                     filtered_df['artikelnummer'].str.contains(article_number.strip(), case=False, na=False)
                 ]
         
-        if type.strip():
+        if heatpump_type.strip():
             if 'typ' in filtered_df.columns:
                 filtered_df = filtered_df[
-                    filtered_df['typ'].str.contains(type.strip(), case=False, na=False)
+                    filtered_df['typ'].str.contains(heatpump_type.strip(), case=False, na=False)
                 ]
         
         # Filter by heating power