fix: create proper Tool instance for template validation

app.py

@@ -88,8 +88,16 @@ with open("prompts.yaml", 'r') as stream:
     logger.debug("Starting template validation...")
     try:
         # Create test tools for validation
-        test_tool = type('Tool', (), {'name': 'test_tool', 'description': 'A test tool'})()
-        test_tools = {'test_tool': test_tool}  # Create a dictionary of tools
+        class TestTool(Tool):
+            name = "test_tool"
+            description = "A test tool"
+            inputs = {'input': {'type': 'string', 'description': 'Test input'}}
+            output_type = "string"
+
+            def forward(self, input: str) -> str:
+                return "test output"
+
+        test_tools = [TestTool()]  # Create a list of tools
         
         # Validate templates
         for key, value in prompt_templates.items():
@@ -109,7 +117,7 @@ with open("prompts.yaml", 'r') as stream:
                             # Create a template with the task variable
                             template = Template(template_str, undefined=StrictUndefined)
                             rendered = template.render(
-                                tools=test_tools,  # Pass dictionary of tools
+                                tools=test_tools,  # Pass list of tools
                                 task="test",
                                 name="test",
                                 final_answer="test",
@@ -134,7 +142,7 @@ with open("prompts.yaml", 'r') as stream:
                     # Create a template with the task variable
                     template = Template(template_str, undefined=StrictUndefined)
                     rendered = template.render(
-                        tools=test_tools,  # Pass dictionary of tools
+                        tools=test_tools,  # Pass list of tools
                         task="test",
                         name="test",
                         final_answer="test",