feat: use glow renderer

cmd/root.go

@@ -156,7 +156,17 @@ func showResult(result *search.Result) {
 }
 
 func displayFile(filePath string, highlightLine int) {
-	// Try bat first for syntax highlighting
+	// Try glow first for Markdown rendering
+	if glowPath, err := exec.LookPath("glow"); err == nil {
+		cmd := exec.Command(glowPath, filePath)
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		if err := cmd.Run(); err == nil {
+			return
+		}
+	}
+
+	// Fallback to bat for syntax highlighting
 	if batPath, err := exec.LookPath("bat"); err == nil {
 		args := []string{
 			"--paging=never",
@@ -175,7 +185,17 @@ func displayFile(filePath string, highlightLine int) {
 		}
 	}
 
-	// Fallback to plain output
+	// Fallback to cat
+	if catPath, err := exec.LookPath("cat"); err == nil {
+		cmd := exec.Command(catPath, filePath)
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		if err := cmd.Run(); err == nil {
+			return
+		}
+	}
+
+	// Final fallback to plain Go file read
 	content, err := os.ReadFile(filePath)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Error reading file: %v\n", err)