fix: remove empty frontmatter from prompt rule files

- Frontmatter is now written only when description exists
- Prevents cluttering prompt files with redundant metadata sections

Generated-by: aiautocommit

Author: iloveitaly

.cursor/rules/react-router-client-loader.mdc

@@ -1,6 +1,3 @@
----
-description: 
----
 ## React Router Client Loader
 
 Do this in a `clientLoader` and use `loaderData` to render the component. DO NOT create mock data, new interfaces, or mock data loader functions. Instead, assume `loaderData` has all of the data you need to render the component.

.cursor/rules/secrets.mdc

@@ -1,6 +1,3 @@
----
-description: 
----
 ## Secrets
 
 Here's how environment variables are managed in this application:

.cursor/rules/typescript-docstring.mdc

@@ -1,6 +1,3 @@
----
-description: 
----
 ## TypeScript DocString
 
 Add a file-level docstring with a simple description of what this file does.

explode.py

@@ -145,13 +145,15 @@ def write_cursor_prompt(content_lines, filename, prompts_dir, section_name=None)
     default_description = ""
     description, filtered_content = extract_description_and_filter_content(content_lines, default_description)
 
-    frontmatter = f"""---
+    with open(filepath, "w") as f:
+        # Only add frontmatter if description is not empty
+        if description:
+            frontmatter = f"""---
 description: {description}
 ---
 """
-    
-    with open(filepath, "w") as f:
-        f.write(frontmatter)
+            f.write(frontmatter)
+        
         for line in filtered_content:
             f.write(line)