fix: Windows drag-and-drop via desktop_drop, sticky upload modal header, and Inactive student status

frontend/lib/ui/screens/documents/documents_screen.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'package:flutter/foundation.dart'
     show defaultTargetPlatform, TargetPlatform;
 import 'package:flutter/material.dart';
+import 'package:desktop_drop/desktop_drop.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../../core/constants/app_colors.dart';
 import '../../../domain/entities/folder_model.dart';
@@ -1025,34 +1026,32 @@ class _DocumentsScreenState extends ConsumerState<DocumentsScreen>
     final isWindows = defaultTargetPlatform == TargetPlatform.windows;
     if (!isWindows) return child;
 
-    return DragTarget<String>(
-      onWillAcceptWithDetails: (details) {
-        setState(() => _isDragOver = true);
-        return true;
-      },
-      onLeave: (_) => setState(() => _isDragOver = false),
-      onAcceptWithDetails: (details) {
+    return DropTarget(
+      onDragEntered: (details) => setState(() => _isDragOver = true),
+      onDragExited: (details) => setState(() => _isDragOver = false),
+      onDragDone: (details) {
         setState(() => _isDragOver = false);
-        final path = details.data;
-        final file = File(path);
-        final ext = path.toLowerCase();
-        if (ext.endsWith('.pdf') ||
-            ext.endsWith('.jpg') ||
-            ext.endsWith('.jpeg') ||
-            ext.endsWith('.png')) {
+        final validFiles = details.files.where((xfile) {
+          final ext = xfile.path.toLowerCase();
+          return ext.endsWith('.pdf') ||
+              ext.endsWith('.jpg') ||
+              ext.endsWith('.jpeg') ||
+              ext.endsWith('.png');
+        }).map((x) => File(x.path)).toList();
+
+        if (validFiles.isNotEmpty) {
           UploadOcrModal.show(
             context,
             prefilledStudentId:
                 _openedFolderStudentId ?? widget.initialStudentId,
-            preloadedFiles: [file],
+            preloadedFiles: validFiles,
           );
         }
       },
-      builder: (context, candidateData, rejectedData) {
-        return Stack(
-          children: [
-            child,
-            if (_isDragOver)
+      child: Stack(
+        children: [
+          child,
+          if (_isDragOver)
               Positioned.fill(
                 child: IgnorePointer(
                   child: AnimatedContainer(
@@ -1100,8 +1099,7 @@ class _DocumentsScreenState extends ConsumerState<DocumentsScreen>
                 ),
               ),
           ],
-        );
-      },
+        ),
     );
   }
 

frontend/lib/ui/screens/documents/widgets/upload_ocr_modal.dart

@@ -70,8 +70,8 @@ class UploadOcrModal extends ConsumerStatefulWidget {
           WoltModalSheetPage(
             backgroundColor: AppColors.surfaceWhite,
             hasSabGradient: false,
-            hasTopBarLayer: false,
-            isTopBarLayerAlwaysVisible: false,
+            hasTopBarLayer: true,
+            isTopBarLayerAlwaysVisible: true,
             child: UploadOcrModal(
               prefilledStudentId: prefilledStudentId,
               preloadedFiles: preloadedFiles,

frontend/lib/ui/screens/students/students_screen.dart

@@ -56,6 +56,7 @@ class _StudentsScreenState extends ConsumerState<StudentsScreen> {
     'Graduated',
     'Transferred',
     'Dropped',
+    'Inactive',
   ];
   static const _4psItems = ['All', 'Yes', 'No'];
   static const _pageSizes = [10, 20, 50];
@@ -284,6 +285,19 @@ class _StudentsScreenState extends ConsumerState<StudentsScreen> {
                 shape: const StadiumBorder(),
               ),
             ),
+            const SizedBox(width: 8),
+            ElevatedButton.icon(
+              onPressed: count == 0
+                  ? null
+                  : () => _showBulkChangeStatusConfirm('Inactive', allStudents),
+              icon: const Icon(Icons.do_not_disturb_on_total_silence, size: 18),
+              label: const Text('Inactive'),
+              style: ElevatedButton.styleFrom(
+                backgroundColor: Colors.blueGrey,
+                foregroundColor: Colors.white,
+                shape: const StadiumBorder(),
+              ),
+            ),
           ] else ...[
             IconButton(
               onPressed: count == 0 ? null : _showBulkEnrollModal,
@@ -324,6 +338,16 @@ class _StudentsScreenState extends ConsumerState<StudentsScreen> {
               ),
               tooltip: 'Drop',
             ),
+            IconButton(
+              onPressed: count == 0
+                  ? null
+                  : () => _showBulkChangeStatusConfirm('Inactive', allStudents),
+              icon: Icon(
+                Icons.do_not_disturb_on_total_silence,
+                color: count == 0 ? Colors.grey : Colors.blueGrey,
+              ),
+              tooltip: 'Inactive',
+            ),
           ],
           const SizedBox(width: 4),
           Container(

frontend/pubspec.lock

@@ -241,6 +241,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.14"
+  desktop_drop:
+    dependency: "direct main"
+    description:
+      name: desktop_drop
+      sha256: aa1e797255bfbc76f9eb5aa4f61e5b68dbf69962ab1be6495816d2f251bc0d1f
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.1"
   device_info_plus:
     dependency: transitive
     description:
@@ -1381,6 +1389,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.1"
+  universal_platform:
+    dependency: transitive
+    description:
+      name: universal_platform
+      sha256: "64e16458a0ea9b99260ceb5467a214c1f298d647c659af1bff6d3bf82536b1ec"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   url_launcher:
     dependency: "direct main"
     description:

frontend/pubspec.yaml

@@ -61,6 +61,7 @@ dependencies:
   intl: ^0.20.3
   flutter_local_notifications: ^17.2.2
   workmanager: ^0.9.0+3
+  desktop_drop: ^0.7.1
 
 dev_dependencies:
   flutter_test:

frontend/windows/flutter/generated_plugin_registrant.cc

@@ -6,6 +6,7 @@
 
 #include "generated_plugin_registrant.h"
 
+#include <desktop_drop/desktop_drop_plugin.h>
 #include <file_selector_windows/file_selector_windows.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
 #include <permission_handler_windows/permission_handler_windows_plugin.h>
@@ -16,6 +17,8 @@
 #include <window_manager/window_manager_plugin.h>
 
 void RegisterPlugins(flutter::PluginRegistry* registry) {
+  DesktopDropPluginRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("DesktopDropPlugin"));
   FileSelectorWindowsRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FileSelectorWindows"));
   FlutterSecureStorageWindowsPluginRegisterWithRegistrar(

frontend/windows/flutter/generated_plugins.cmake

@@ -3,6 +3,7 @@
 #
 
 list(APPEND FLUTTER_PLUGIN_LIST
+  desktop_drop
   file_selector_windows
   flutter_secure_storage_windows
   permission_handler_windows