diff --git a/scaffoldforge/generators/structure.py b/scaffoldforge/generators/structure.py
index f6be7da..7dece1e 100644
--- a/scaffoldforge/generators/structure.py
+++ b/scaffoldforge/generators/structure.py
@@ -49,9 +49,9 @@ class StructureGenerator:
         base_path = Path(self.output_dir) / project_name
 
         if self.preview:
-            print(f"\n{'='*60}")
+            print(f"\n{'=' * 60}")
             print(f"PREVIEW: Project would be created at: {base_path}")
-            print(f"{'='*60}\n")
+            print(f"{'=' * 60}\n")
 
         files = code_generator.generate_all_files(language, issue_data)
 
@@ -66,9 +66,7 @@ class StructureGenerator:
         if self.preview:
             self._print_preview_summary()
 
-    def _create_directories(
-        self, base_path: Path, issue_data: IssueData
-    ) -> None:
+    def _create_directories(self, base_path: Path, issue_data: IssueData) -> None:
         """Create project directories.
 
         Args:
@@ -127,9 +125,7 @@ class StructureGenerator:
         except OSError as e:
             raise OSError(f"Failed to write file {file_path}: {e}")
 
-    def _create_readme(
-        self, base_path: Path, issue_data: IssueData, project_name: str
-    ) -> None:
+    def _create_readme(self, base_path: Path, issue_data: IssueData, project_name: str) -> None:
         """Create README.md file.
 
         Args:
@@ -143,7 +139,7 @@ class StructureGenerator:
 
 ## Description
 
-{issue_data.body[:500]}{'...' if len(issue_data.body) > 500 else ''}
+{issue_data.body[:500]}{"..." if len(issue_data.body) > 500 else ""}
 
 **GitHub Issue:** #{issue_data.number}
 **Repository:** {issue_data.repository}
@@ -151,13 +147,19 @@ class StructureGenerator:
 
 ## Requirements
 
-{chr(10).join(f"- {req}" for req in issue_data.requirements)
- if issue_data.requirements else "- See GitHub issue for requirements"}
+{"
+".join(f"- {req}" for req in issue_data.requirements)
+if issue_data.requirements
+else "- See GitHub issue for requirements"
+        }
 
 ## TODO Items
 
-{chr(10).join(f"- [ ] {item}" for item in issue_data.get_todo_items())
- if issue_data.get_todo_items() else "- No TODO items found"}
+{"
+".join(f"- [ ] {item}" for item in issue_data.get_todo_items())
+if issue_data.get_todo_items()
+else "- No TODO items found"
+        }
 
 ## Getting Started
 
@@ -185,9 +187,7 @@ MIT
             FileSpec(path="README.md", content=readme_content),
         )
 
-    def _create_gitignore(
-        self, base_path: Path, project_name: str, language: str
-    ) -> None:
+    def _create_gitignore(self, base_path: Path, project_name: str, language: str) -> None:
         """Create .gitignore file based on language.
 
         Args:
@@ -249,18 +249,19 @@ Cargo.lock
             Sanitized name.
         """
         import re
+
         name = re.sub(r"[^a-zA-Z0-9\s_-]", "", name)
         name = re.sub(r"\s+", "-", name.strip())
         return name.lower()[:50] or "project"
 
     def _print_preview_summary(self) -> None:
         """Print a summary of what would be created in preview mode."""
-        print(f"\n{'='*60}")
+        print(f"\n{'=' * 60}")
         print("PREVIEW SUMMARY")
-        print(f"{'='*60}")
+        print(f"{'=' * 60}")
         print(f"Directories: {len(self.created_dirs)}")
         print(f"Files: {len(self.created_files)}")
-        print(f"{'='*60}\n")
+        print(f"{'=' * 60}\n")
 
     def get_created_files(self) -> list[str]:
         """Get list of created files."""
@@ -268,4 +269,4 @@ Cargo.lock
 
     def get_created_directories(self) -> list[str]:
         """Get list of created directories."""
-        return self.created_dirs.copy()
+        return self.created_dirs.copy()
\ No newline at end of file