fix: resolve symlinks in tree root

Author: jacobkoziej

config/config.go

@@ -206,6 +206,11 @@ func FromViper(v *viper.Viper) (*Config, error) {
 		return nil, fmt.Errorf("failed to get absolute path for tree root: %w", err)
 	}
 
+	// resolve symlinks in tree root
+	if cfg.TreeRoot, err = filepath.EvalSymlinks(cfg.TreeRoot); err != nil {
+		return nil, fmt.Errorf("tree root %s not found: %w", cfg.TreeRoot, err)
+	}
+
 	// prefer top level excludes, falling back to global.excludes for backwards compatibility
 	if len(cfg.Excludes) == 0 {
 		cfg.Excludes = cfg.Global.Excludes