fix: use correct icon for function based tools (#556)

<img width="3010" height="1642" alt="CleanShot 2025-10-15 at 16 16
27@2x"
src="https://github.com/user-attachments/assets/d4315725-c104-4a79-a75b-83f64b2a0aa5"
/>

Author: farazcsk

client/dashboard/src/components/tool-list/ToolList.tsx

@@ -97,6 +97,7 @@ function groupTools(
 ): ToolGroup[] {
   const groups: ToolGroup[] = [];
   const packageMap = new Map<string, Tool[]>();
+  const functionMap = new Map<string, Tool[]>();
   const functionTools: Tool[] = [];
   const customTools: Tool[] = [];
   const higherOrderTools: Tool[] = [];
@@ -128,8 +129,8 @@ function groupTools(
       }
 
       if (groupKey) {
-        const existing = packageMap.get(groupKey) || [];
-        packageMap.set(groupKey, [...existing, tool]);
+        const existing = functionMap.get(groupKey) || [];
+        functionMap.set(groupKey, [...existing, tool]);
       } else {
         // Function tools without a source go to the generic functions group
         functionTools.push(tool);
@@ -151,6 +152,17 @@ function groupTools(
     });
   });
 
+  // Add function groups
+  functionMap.forEach((tools, functionName) => {
+    groups.push({
+      type: "function",
+      icon: "square-function",
+      title: functionName,
+      tools,
+      packageName: functionName,
+    });
+  });
+
   // Add function tools group
   if (functionTools.length > 0) {
     groups.push({