Apply standard Go formatting and update project documentation

- Run go fmt on all Go files to ensure consistent formatting
- Add official Go tooling commands to CLAUDE.md for code quality
- Update project status to reflect current implementation state

collector/collector.go

@@ -33,7 +33,7 @@ func (c *Collector) Collect(sourceDir string) ([]FileEntry, error) {
 	if err != nil {
 		return nil, fmt.Errorf("failed to get absolute path: %w", err)
 	}
-	
+
 	// Check if source directory exists
 	info, err := os.Stat(absSourceDir)
 	if err != nil {
@@ -42,9 +42,9 @@ func (c *Collector) Collect(sourceDir string) ([]FileEntry, error) {
 	if !info.IsDir() {
 		return nil, fmt.Errorf("source path is not a directory: %s", sourceDir)
 	}
-	
+
 	var files []FileEntry
-	
+
 	err = filepath.WalkDir(absSourceDir, func(path string, d fs.DirEntry, err error) error {
 		if err != nil {
 			// Log permission errors but continue walking
@@ -54,7 +54,7 @@ func (c *Collector) Collect(sourceDir string) ([]FileEntry, error) {
 			}
 			return err
 		}
-		
+
 		// Get file info
 		info, err := d.Info()
 		if err != nil {
@@ -64,12 +64,12 @@ func (c *Collector) Collect(sourceDir string) ([]FileEntry, error) {
 			}
 			return err
 		}
-		
+
 		// Skip symlinks
 		if info.Mode()&os.ModeSymlink != 0 {
 			return nil
 		}
-		
+
 		// Check if this file should be included
 		if c.matcher.ShouldInclude(path, info) {
 			// Calculate relative path from source directory
@@ -77,42 +77,42 @@ func (c *Collector) Collect(sourceDir string) ([]FileEntry, error) {
 			if err != nil {
 				return fmt.Errorf("failed to get relative path: %w", err)
 			}
-			
+
 			// Clean the relative path to ensure consistent formatting
 			relPath = filepath.ToSlash(relPath)
-			
+
 			files = append(files, FileEntry{
 				Path:     relPath,
 				FullPath: path,
 			})
 		}
-		
+
 		return nil
 	})
-	
+
 	if err != nil {
 		return nil, fmt.Errorf("walk error: %w", err)
 	}
-	
+
 	// Check if any files were found
 	if len(files) == 0 {
 		return nil, fmt.Errorf("no files found matching criteria")
 	}
-	
+
 	return files, nil
 }
 
 // GetArchiveFormat determines the archive format from the filename
 func GetArchiveFormat(filename string) string {
 	lower := strings.ToLower(filename)
-	
+
 	if strings.HasSuffix(lower, ".tar.gz") || strings.HasSuffix(lower, ".tgz") {
 		return "tar.gz"
 	}
-	
+
 	if strings.HasSuffix(lower, ".zip") {
 		return "zip"
 	}
-	
+
 	return ""
-}
+}