feat: allow modification of built-in tool types

Remove restrictions on updating and deleting built-in tool types.
Show delete button for all tool types in Tool Workshop.

apps/api/src/api/tool_types.py

@@ -406,8 +406,7 @@ async def update_tool_type(
     if tool_type is None:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="tool type not found")
     
-    if tool_type.is_builtin:
+    # Built-in tool types can now be modified
-        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="cannot modify built-in tool types")
     
     update_data = data.model_dump(exclude_unset=True)
     
@@ -625,8 +624,7 @@ async def delete_tool_type(
     if tool_type is None:
         raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="tool type not found")
     
-    if tool_type.is_builtin:
+    # Built-in tool types can now be deleted
-        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="cannot delete built-in tool types")
     
     await session.delete(tool_type)
     await session.commit()

apps/web/src/pages/tool-workshop.tsx

@@ -561,23 +561,6 @@ export const ToolWorkshopPage = () => {
                   {toolType.category || "Uncategorized"} · {toolType.interface_type === "web" ? `Port ${toolType.default_port}` : "Terminal"}
                 </div>
               </div>
-              {toolType.is_builtin && (
-                <span
-                  style={{
-                    fontSize: "0.625rem",
-                    textTransform: "uppercase",
-                    padding: "0.125rem 0.375rem",
-                    borderRadius: "9999px",
-                    background: selectedToolTypeId === toolType.id ? "rgba(255,255,255,0.25)" : "var(--muted)",
-                    color: selectedToolTypeId === toolType.id ? "white" : "var(--muted)",
-                    fontWeight: 600,
-                    flexShrink: 0,
-                  }}
-                >
-                  Built-in
-                </span>
-              )}
-              {!toolType.is_builtin && (
               <button
                 onClick={(e) => {
                   e.stopPropagation();
@@ -598,7 +581,6 @@ export const ToolWorkshopPage = () => {
               >
                 <Icon name="delete" size="sm" />
               </button>
-              )}
             </button>
           ))}
         </div>