feat: some updates

server/internal/handlers/helpers.go

@@ -0,0 +1,30 @@
+package handlers
+
+import (
+	"os"
+	"time"
+
+	"git.max-richter.dev/max/marka/parser"
+)
+
+func parseMarkdownFile(path string) (any, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+	return parser.ParseFile(string(data))
+}
+
+func sizeOrZero(fi os.FileInfo) int64 {
+	if fi == nil {
+		return 0
+	}
+	return fi.Size()
+}
+
+func modTimeOrZero(fi os.FileInfo) time.Time {
+	if fi == nil {
+		return time.Time{}
+	}
+	return fi.ModTime()
+}