fix: resolve CI linting errors

src/gdiffer/output.py

@@ -63,7 +63,7 @@ class OutputFormatter:
         if analysis.all_suggestions:
             output_parts.append(self._format_suggestions(analysis.all_suggestions))
 
-        return '\n'.join(output_parts)
+        return '\\n'.join(output_parts)
 
     def _format_summary(self, analysis: DiffAnalysis) -> str:
         """Format the summary section."""
@@ -76,19 +76,19 @@ class OutputFormatter:
         lines.append(f"[info]Total changes:[/info] {analysis.total_changes}")
 
         if analysis.language_breakdown:
-            lines.append("\n[bold blue]Languages:[/bold blue]")
+            lines.append("\\n[bold blue]Languages:[/bold blue]")
             for lang, count in sorted(analysis.language_breakdown.items()):
                 lines.append(f"  - {lang}: {count}")
 
-        return '\n'.join(lines)
+        return '\\n'.join(lines)
 
     def _format_files(self, analysis: DiffAnalysis) -> str:
         """Format file changes section."""
         lines = []
-        lines.append("\n[bold blue]=== File Changes ===[/bold blue]")
+        lines.append("\\n[bold blue]=== File Changes ===[/bold blue]")
 
         for i, file_obj in enumerate(analysis.files, 1):
-            lines.append(f"\n[filename]{i}. {file_obj.filename}[/filename]")
+            lines.append(f"\\n[filename]{i}. {file_obj.filename}[/filename]")
 
             change_emoji = {
                 "add": "[added]✚[/added]",
@@ -107,10 +107,11 @@ class OutputFormatter:
                 lines.append(f"   Changes: {total_changes} lines")
 
             for j, hunk in enumerate(file_obj.hunks, 1):
-                lines.append(f"   Hunk {j} (lines {hunk.old_start}-{hunk.old_start + hunk.old_lines}):")
+                hunk_range = f"{hunk.old_start}-{hunk.old_start + hunk.old_lines}"
+                lines.append(f"   Hunk {j} (lines {hunk_range}):")
                 lines.append(self._format_hunk(hunk))
 
-        return '\n'.join(lines)
+        return '\\n'.join(lines)
 
     def _format_hunk(self, hunk) -> str:
         """Format a single hunk with color-coded changes."""
@@ -126,20 +127,22 @@ class OutputFormatter:
                 lines.append(f"    [info]{line}[/info]")
             else:
                 lines.append(f"    {line}")
-        return '\n'.join(lines)
+        return '\\n'.join(lines)
 
     def _format_issues(self, issues: list[dict]) -> str:
         """Format issues section."""
         lines = []
-        lines.append("\n[bold blue]=== Detected Issues ===[/bold blue]")
+        lines.append("\\n[bold blue]=== Detected Issues ===[/bold blue]")
 
         severity_priority = {'critical': 0, 'high': 1, 'medium': 2, 'low': 3}
-        sorted_issues = sorted(issues, key=lambda x: severity_priority.get(x.get('severity', ''), 4))
+        sorted_issues = sorted(
+            issues, key=lambda x: severity_priority.get(x.get('severity', ''), 4)
+        )
 
         for issue in sorted_issues:
             severity = issue.get('severity', 'info').lower()
             color = getattr(SeverityColors, severity.upper(), 'info')
-            lines.append(f"\n[{color}]✖ {issue.get('title', 'Issue')}[/[{color}]]")
+            lines.append(f"\\n[{color}]✖ {issue.get('title', 'Issue')}[/[{color}]]")
             lines.append(f"   Severity: [{color}]{severity.upper()}[/[{color}]]")
             lines.append(f"   Description: {issue.get('description', '')}")
             if issue.get('line'):
@@ -147,17 +150,17 @@ class OutputFormatter:
             if issue.get('suggestion'):
                 lines.append(f"   Suggestion: {issue['suggestion']}")
 
-        return '\n'.join(lines)
+        return '\\n'.join(lines)
 
     def _format_suggestions(self, suggestions: list[str]) -> str:
         """Format suggestions section."""
         lines = []
-        lines.append("\n[bold blue]=== Suggestions ===[/bold blue]")
+        lines.append("\\n[bold blue]=== Suggestions ===[/bold blue]")
 
         for i, suggestion in enumerate(suggestions, 1):
-            lines.append(f"\n[info]{i}. {suggestion}[/info]")
+            lines.append(f"\\n[info]{i}. {suggestion}[/info]")
 
-        return '\n'.join(lines)
+        return '\\n'.join(lines)
 
     def _format_json(self, analysis: DiffAnalysis) -> str:
         """Format as JSON."""
@@ -217,14 +220,14 @@ class OutputFormatter:
         lines.append(f"Total changes: {analysis.total_changes}")
 
         if analysis.language_breakdown:
-            lines.append("\nLanguages:")
+            lines.append("\\nLanguages:")
             for lang, count in sorted(analysis.language_breakdown.items()):
                 lines.append(f"  - {lang}: {count}")
 
-        lines.append("\n=== File Changes ===")
+        lines.append("\\n=== File Changes ===")
 
         for i, file_obj in enumerate(analysis.files, 1):
-            lines.append(f"\n{i}. {file_obj.filename}")
+            lines.append(f"\\n{i}. {file_obj.filename}")
             lines.append(f"   Status: {file_obj.change_type}")
 
             if file_obj.is_rename:
@@ -238,18 +241,18 @@ class OutputFormatter:
                     lines.append(f"    {line}")
 
         if analysis.all_issues:
-            lines.append("\n=== Detected Issues ===")
+            lines.append("\\n=== Detected Issues ===")
             for issue in analysis.all_issues:
                 lines.append(f"- {issue.get('title', 'Issue')}")
                 lines.append(f"  Severity: {issue.get('severity', 'unknown')}")
                 lines.append(f"  Description: {issue.get('description', '')}")
 
         if analysis.all_suggestions:
-            lines.append("\n=== Suggestions ===")
+            lines.append("\\n=== Suggestions ===")
             for i, suggestion in enumerate(analysis.all_suggestions, 1):
                 lines.append(f"{i}. {suggestion}")
 
-        return '\n'.join(lines)
+        return '\\n'.join(lines)
 
     def print(self, content: str) -> None:
         """Print content to console."""