Fix task creation to use sprint's project when sprint is selected

data/tasks.json

@@ -482,7 +482,7 @@
       ]
     }
   ],
-  "lastUpdated": 1771551794092,
+  "lastUpdated": 1771552039142,
   "sprints": [
     {
       "name": "Sprint 1",

src/app/page.tsx

@@ -123,10 +123,14 @@ export default function Home() {
   }
 
   const handleAddTask = () => {
-    if (newTask.title?.trim() && selectedProjectId) {
+    if (newTask.title?.trim()) {
+      // If a specific sprint is selected, use that sprint's project
+      const selectedSprint = newTask.sprintId ? sprints.find(s => s.id === newTask.sprintId) : null
+      const targetProjectId = selectedSprint?.projectId || selectedProjectId || '2'
+      
       addTask({
         ...newTask,
-        projectId: selectedProjectId,
+        projectId: targetProjectId,
         status: newTask.status || "backlog",
         sprintId: newTask.sprintId || currentSprint?.id, // Use selected sprint or default to current
       } as any)