fix: Restore title field in task modals (regression from #324)

The title field was accidentally removed from all task modals in commit 0b34a19.
This fix restores the title field with the correct visibility logic:

- Edit modals: Always show title field in the details section
- Creation modals with NLP enabled: Show title field in details section
  (since the main title input is replaced by NLP textarea)
- Creation modals with NLP disabled: Only show the main title field at top
  (no title field in details section needed)

This ensures users can always edit the task title regardless of modal type
or NLP settings.

Author: callumalpass

src/modals/TaskModal.ts

@@ -158,6 +158,33 @@ export abstract class TaskModal extends Modal {
             this.detailsContainer.style.display = 'none';
         }
 
+        // Title field appears in details section for:
+        // 1. Edit modals (always)
+        // 2. Creation modals when NLP is enabled (since the main title input is replaced by NLP textarea)
+        const isEditModal = this.getModalTitle() === 'Edit task';
+        const isCreationWithNLP = this.getModalTitle() === 'Create task' && this.plugin.settings.enableNaturalLanguageInput;
+        
+        if (isEditModal || isCreationWithNLP) {
+            const titleLabel = this.detailsContainer.createDiv('detail-label');
+            titleLabel.textContent = 'Title';
+            
+            const titleInputDetailed = this.detailsContainer.createEl('input', {
+                type: 'text',
+                cls: 'title-input-detailed',
+                placeholder: 'Task title...'
+            });
+            
+            titleInputDetailed.value = this.title;
+            titleInputDetailed.addEventListener('input', (e) => {
+                this.title = (e.target as HTMLInputElement).value;
+            });
+            
+            // Store reference for creation modals with NLP
+            if (isCreationWithNLP && !this.titleInput) {
+                this.titleInput = titleInputDetailed;
+            }
+        }
+
         // Details textarea (only for creation modals, not edit modals)
         if (this.getModalTitle() !== 'Edit task') {
             const detailsLabel = this.detailsContainer.createDiv('detail-label');