✨ 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';
@@ -89,19 +90,39 @@ class ImageFileContent extends HookConsumerWidget {
     return Stack(
       children: [
         Positioned.fill(
-          child: PhotoView(
-            backgroundDecoration: BoxDecoration(
-              color: Colors.black.withOpacity(0.9),
+          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),
+              ),
+              controller: photoViewController,
+              imageProvider: CloudImageWidget.provider(
+                fileId: item.id,
+                serverUrl: ref.watch(serverUrlProvider),
+                original: showOriginal.value,
+              ),
+              customSize: MediaQuery.of(context).size,
+              basePosition: Alignment.center,
+              filterQuality: FilterQuality.high,
             ),
-            controller: photoViewController,
-            imageProvider: CloudImageWidget.provider(
-              fileId: item.id,
-              serverUrl: ref.watch(serverUrlProvider),
-              original: showOriginal.value,
-            ),
-            customSize: MediaQuery.of(context).size,
-            basePosition: Alignment.center,
-            filterQuality: FilterQuality.high,
           ),
         ),
         // Controls overlay