fix: exclude .git directory from project structure generation

- Updated generate-project-tree.js to explicitly skip .git directory
- Regenerated project-structure.txt without .git contents

.husky/scripts/generate-project-tree.js

@@ -45,6 +45,11 @@ function generateTree(dir, prefix = '', isRoot = true) {
   items.forEach(item => {
     const itemPath = path.join(dir, item);
     
+    // Explicitly skip .git directory
+    if (item === '.git') {
+      return;
+    }
+    
     // Skip if ignored by git
     if (isGitIgnored(itemPath)) {
       return;