fix: resolve CI linting and type checking errors

scaffoldforge/templates/go/default/main.go.j2

@@ -1,16 +1,16 @@
-// Main entry point for {{ project_name }}
+// Main entry point for {{ project_name }}.
 // Generated from GitHub Issue #{{ issue_number }}: {{ issue_title }}
-// URL: {{ issue_url }}
 
 package main
 
 import "fmt"
 
-{% for item in todo_items %}
-// TODO #{{ loop.index }}: {{ item }}
-{% endfor %}
-
 func main() {
+    // TODO: Implement main functionality
+    // {% for item in todo_items %}
+    // TODO #{{ loop.index }}: {{ item }}
+    // {% endfor %}
+
     fmt.Println("{{ project_name }} is running")
     fmt.Printf("Repository: {{ repository }}\n")
     fmt.Printf("Issue: {{ issue_number }}\n")