feat: add primary tag functionality to tasks

- Introduced `primaryTagId` to `Task` model and updated related components to support selecting a primary tag.
- Enhanced `TaskCard`, `EditTaskForm`, and `TagInput` to handle primary tag selection and display.
- Updated `TasksService` to manage primary tag data during task creation and updates.
- Added `emoji-regex` dependency for improved emoji handling in task titles.

src/actions/tasks.ts

@@ -93,6 +93,7 @@ export async function updateTask(data: {
   status?: TaskStatus;
   priority?: TaskPriority;
   tags?: string[];
+  primaryTagId?: string;
   dueDate?: Date;
 }): Promise<ActionResult> {
   try {
@@ -109,6 +110,7 @@ export async function updateTask(data: {
     if (data.status !== undefined) updateData.status = data.status;
     if (data.priority !== undefined) updateData.priority = data.priority;
     if (data.tags !== undefined) updateData.tags = data.tags;
+    if (data.primaryTagId !== undefined) updateData.primaryTagId = data.primaryTagId;
     if (data.dueDate !== undefined) updateData.dueDate = data.dueDate;
 
     const task = await tasksService.updateTask(data.taskId, updateData);
@@ -136,6 +138,7 @@ export async function createTask(data: {
   status?: TaskStatus;
   priority?: TaskPriority;
   tags?: string[];
+  primaryTagId?: string;
 }): Promise<ActionResult> {
   try {
     if (!data.title.trim()) {
@@ -147,7 +150,8 @@ export async function createTask(data: {
       description: data.description?.trim() || '',
       status: data.status || 'todo',
       priority: data.priority || 'medium',
-      tags: data.tags || []
+      tags: data.tags || [],
+      primaryTagId: data.primaryTagId
     });
     
     // Revalidation automatique du cache