Update function name formatting in CodeBase to include 'F' prefix for clarity

Author: BrunoV21

codetide/core/models.py

@@ -597,7 +597,7 @@ def _render_file_contents(self, code_file: 'CodeFileModel', prefix: str,
             contents.append(("variable", name, None))
 
         for function in code_file.functions:
-            name = f" {function.name}" if include_types else function.name
+            name = f"F {function.name}" if include_types else function.name
             contents.append(("function", name, None))
 
         for class_def in code_file.classes: