diff --git a/shellgenius/refactoring.py b/shellgenius/refactoring.py
index 8151f68..63e1c76 100644
--- a/shellgenius/refactoring.py
+++ b/shellgenius/refactoring.py
@@ -4,7 +4,6 @@ import re
 from dataclasses import dataclass
 from typing import Any, Dict, List, Optional
 
-from shellgenius.config import get_config
 from shellgenius.generation import ShellParser, get_ollama_client
 
 
@@ -173,7 +172,7 @@ class RefactoringAnalyzer:
         issues = self._find_issues(script)
         score = self._calculate_score(issues, script)
 
-        suggestions = self._generate_suggestions(issues, script)
+        suggestions = self._generate_suggestions( issues, script)
 
         if include_suggestions:
             ai_suggestions = self._get_ai_suggestions(script, shell_type)
@@ -256,7 +255,7 @@ class RefactoringAnalyzer:
                 "suggestion": "Use $() syntax instead",
                 "alternative": re.sub(r"`([^`]+)`", r"$(\1)", line),
             }
-        if re.search(r"\[\s*[\^\]]+\]", line) and "=" in line:
+        if re.search(r"\[\s*[\]]+\]", line) and "=" in line:
             return {
                 "description": "Use of [ ] instead of [[ ]]",
                 "risk": "[ ] has limitations with pattern matching",
@@ -283,7 +282,7 @@ class RefactoringAnalyzer:
         for issue in issues:
             base_score -= severity_weights.get(issue.severity, 5)
 
-        lines_count = len([l for l in script.split("\n") if l.strip()])
+        lines_count = len([line for line in script.split("\n") if line.strip()])
         if lines_count > 0 and base_score > 50:
             density_bonus = min(10, lines_count // 20)
             base_score += density_bonus
@@ -313,7 +312,7 @@ class RefactoringAnalyzer:
             )
 
         if issues:
-            severity_counts = {}
+            severity_counts: Dict[str, int] = {}
             for issue in issues:
                 severity_counts[issue.severity] = (
                     severity_counts.get(issue.severity, 0) + 1
@@ -367,7 +366,6 @@ class RefactoringAnalyzer:
         """
         lines = script.split("\n")
         fixed_lines = []
-        issue_map = {i.issue_type: i for i in issues}
 
         for i, line in enumerate(lines, 1):
             stripped = line.strip()