Fix pathIsHidden treating base directory as hidden, print banner to stdout

- pathIsHidden(".") was returning true, causing freshen to skip entire
  directory tree when dotfiles excluded
- Banner now prints directly to stdout to avoid log prefix artifacts

internal/cli/freshen.go

@@ -372,12 +372,11 @@ func addExistingToBuilder(b *mfer.Builder, entry *mfer.MFFilePath) {
 
 // pathIsHidden checks if a path contains hidden components
 func pathIsHidden(p string) bool {
-	for _, part := range filepath.SplitList(p) {
-		if len(part) > 0 && part[0] == '.' {
-			return true
-		}
+	// "." is not hidden, it's the current directory
+	if p == "." {
+		return false
 	}
-	// Also check each path component
+	// Check each path component
 	for p != "" && p != "." && p != "/" {
 		base := filepath.Base(p)
 		if len(base) > 0 && base[0] == '.' {