✨ Zoom image via mosue scroll

lib/widgets/content/file_viewer_contents.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 import 'dart:math' as math;
+import 'dart:ui';
 
 import 'package:file_saver/file_saver.dart';
 import 'package:flutter/material.dart';
@@ -89,6 +90,25 @@ class ImageFileContent extends HookConsumerWidget {
     return Stack(
       children: [
         Positioned.fill(
+          child: Listener(
+            onPointerSignal: (pointerSignal) {
+              try {
+                // Handle mouse wheel zoom - cast to dynamic to access scrollDelta
+                final delta =
+                    (pointerSignal as dynamic).scrollDelta.dy as double?;
+                if (delta != null && delta != 0) {
+                  final currentScale = photoViewController.scale ?? 1.0;
+                  // Adjust scale based on scroll direction (invert for natural zoom)
+                  final newScale =
+                      delta > 0 ? currentScale * 0.9 : currentScale * 1.1;
+                  // Clamp scale to reasonable bounds
+                  final clampedScale = newScale.clamp(0.1, 10.0);
+                  photoViewController.scale = clampedScale;
+                }
+              } catch (e) {
+                // Ignore non-scroll events
+              }
+            },
             child: PhotoView(
               backgroundDecoration: BoxDecoration(
                 color: Colors.black.withOpacity(0.9),
@@ -104,6 +124,7 @@ class ImageFileContent extends HookConsumerWidget {
               filterQuality: FilterQuality.high,
             ),
           ),
+        ),
         // Controls overlay
         Positioned(
           bottom: MediaQuery.of(context).padding.bottom + 16,