Allow task completion even if signatories are still empty, put an indicator for completed tasks with incomplete details.

lib/models/task.dart

@@ -53,6 +53,19 @@ class Task {
   // JSON serialized rich text for action taken (Quill Delta JSON encoded)
   final String? actionTaken;
 
+  /// Helper that indicates whether a completed task still has missing
+  /// metadata such as signatories or action details.  The parameter is used
+  /// by UI to surface a warning icon/banner when a task has been closed but
+  /// the user skipped filling out all fields.
+  bool get hasIncompleteDetails {
+    if (status != 'completed') return false;
+    bool empty(String? v) => v == null || v.trim().isEmpty;
+    return empty(requestedBy) ||
+        empty(notedBy) ||
+        empty(receivedBy) ||
+        empty(actionTaken);
+  }
+
   factory Task.fromMap(Map<String, dynamic> map) {
     return Task(
       id: map['id'] as String,

lib/providers/tasks_provider.dart

@@ -562,7 +562,9 @@ class TasksController {
             .from('tasks')
             // include all columns that must be non-null/empty before completing
             .select(
-              'request_type, request_category, requested_by, noted_by, received_by, action_taken',
+              // signatories are not needed for validation; action_taken is still
+              // required so we include it alongside the type/category fields.
+              'request_type, request_category, action_taken',
             )
             .eq('id', taskId)
             .maybeSingle();
@@ -572,9 +574,6 @@ class TasksController {
 
         final rt = row['request_type'];
         final rc = row['request_category'];
-        final requested = row['requested_by'];
-        final noted = row['noted_by'];
-        final received = row['received_by'];
         final action = row['action_taken'];
 
         final missing = <String>[];
@@ -584,17 +583,13 @@ class TasksController {
         if (rc == null || (rc is String && rc.trim().isEmpty)) {
           missing.add('request category');
         }
-        if (requested == null ||
-            (requested is String && requested.trim().isEmpty)) {
-          missing.add('requested by');
-        }
-        if (noted == null || (noted is String && noted.trim().isEmpty)) {
-          missing.add('noted by');
-        }
-        if (received == null ||
-            (received is String && received.trim().isEmpty)) {
-          missing.add('received by');
-        }
+        // signatories are no longer required for completion; they can be
+        // filled in later.  we still require action taken to document what
+        // was done.
+
+        // if you want to enforce action taken you can uncomment this block,
+        // but current business rule only mandates request metadata. we keep
+        // action taken non-null for clarity.
         if (action == null || (action is String && action.trim().isEmpty)) {
           missing.add('action taken');
         }

lib/screens/tasks/task_detail_screen.dart

@@ -426,6 +426,28 @@ class _TaskDetailScreenState extends ConsumerState<TaskDetailScreen>
                 const SizedBox(height: 12),
                 Text(description),
               ],
+
+              // warning banner for completed tasks with missing metadata
+              if (task.status == 'completed' && task.hasIncompleteDetails) ...[
+                const SizedBox(height: 12),
+                Row(
+                  children: [
+                    const Icon(
+                      Icons.warning_amber_rounded,
+                      color: Colors.orange,
+                    ),
+                    const SizedBox(width: 6),
+                    Expanded(
+                      child: Text(
+                        'Task completed but some details are still empty.',
+                        style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+                          color: Theme.of(context).colorScheme.onSurfaceVariant,
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ],
               const SizedBox(height: 16),
               // Collapsible tabbed details: Assignees / Type & Category / Signatories
               ExpansionTile(

lib/screens/tasks/tasks_list_screen.dart

@@ -297,8 +297,21 @@ class _TasksListScreenState extends ConsumerState<TasksListScreen> {
                   ),
                   TasQColumn<Task>(
                     header: 'Status',
-                    cellBuilder: (context, task) =>
+                    cellBuilder: (context, task) => Row(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
                         _StatusBadge(status: task.status),
+                        if (task.status == 'completed' &&
+                            task.hasIncompleteDetails) ...[
+                          const SizedBox(width: 4),
+                          const Icon(
+                            Icons.warning_amber_rounded,
+                            size: 16,
+                            color: Colors.orange,
+                          ),
+                        ],
+                      ],
+                    ),
                   ),
                   TasQColumn<Task>(
                     header: 'Timestamp',
@@ -352,6 +365,15 @@ class _TasksListScreenState extends ConsumerState<TasksListScreen> {
                         mainAxisSize: MainAxisSize.min,
                         children: [
                           _StatusBadge(status: task.status),
+                          if (task.status == 'completed' &&
+                              task.hasIncompleteDetails) ...[
+                            const SizedBox(width: 4),
+                            const Icon(
+                              Icons.warning_amber_rounded,
+                              size: 16,
+                              color: Colors.orange,
+                            ),
+                          ],
                           if (showTyping) ...[
                             const SizedBox(width: 6),
                             TypingDots(