fix: improve import — surface real errors, restore all task fields

- Export now includes kanbanStage, url, urgency, importance, priority,
  delegatedTo, delegationNote, recurrenceDays so backups are complete
- Import now handles those same fields (round-trip fidelity)
- Error handler returns the actual error message instead of the generic
  "Import failed. Please check the file format." — makes failures diagnosable
- Guard against empty task title with fallback '(untitled)'

v1.87.2

package.json

@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.87.1",
+  "version": "1.87.2",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {

src/app/api/user/export-data/route.ts

@@ -79,6 +79,14 @@ export async function GET() {
                 parentTaskId: true,
                 somedaySlotIndex: true,
                 projectId: true,
+                kanbanStage: true,
+                url: true,
+                urgency: true,
+                importance: true,
+                priority: true,
+                delegatedTo: true,
+                delegationNote: true,
+                recurrenceDays: true,
             },
         });
 

src/app/api/user/import-data/route.ts

@@ -22,11 +22,19 @@ interface ImportTask {
     recurrenceUnit?: string | null;
     recurrenceTime?: string | null;
     recurrenceEndDate?: string | null;
+    recurrenceDays?: string | null;
     createdAt?: string;
     updatedAt?: string;
     parentTaskId?: string | null;
     somedaySlotIndex?: number | null;
     projectId?: string | null;
+    kanbanStage?: string | null;
+    url?: string | null;
+    urgency?: boolean | null;
+    importance?: boolean | null;
+    priority?: string | null;
+    delegatedTo?: string | null;
+    delegationNote?: string | null;
     subTasks?: ImportTask[];
 }
 
@@ -166,7 +174,7 @@ export async function POST(request: Request) {
             const created = await prisma.task.create({
                 data: {
                     userId: user.id,
-                    title: task.title,
+                    title: task.title || '(untitled)',
                     description: task.description ?? null,
                     markdownContent: task.markdownContent ?? null,
                     completed: task.completed ?? false,
@@ -183,8 +191,16 @@ export async function POST(request: Request) {
                     recurrenceUnit: task.recurrenceUnit ?? null,
                     recurrenceTime: task.recurrenceTime ?? null,
                     recurrenceEndDate: task.recurrenceEndDate ? new Date(task.recurrenceEndDate) : null,
+                    recurrenceDays: task.recurrenceDays ?? null,
                     somedaySlotIndex: task.somedaySlotIndex ?? null,
                     projectId: resolvedProjectId ?? null,
+                    kanbanStage: task.kanbanStage ?? null,
+                    url: task.url ?? null,
+                    urgency: task.urgency ?? null,
+                    importance: task.importance ?? null,
+                    priority: task.priority ?? null,
+                    delegatedTo: task.delegatedTo ?? null,
+                    delegationNote: task.delegationNote ?? null,
                 },
             });
 
@@ -242,9 +258,12 @@ export async function POST(request: Request) {
         });
     } catch (error) {
         console.error('Import data error:', error);
-        const message = error instanceof SyntaxError
+        let message = 'Import failed. Please check the file format.';
-            ? 'Invalid JSON file'
+        if (error instanceof SyntaxError) {
-            : 'Import failed. Please check the file format.';
+            message = 'Invalid JSON file';
+        } else if (error instanceof Error) {
+            message = `Import failed: ${error.message}`;
+        }
         return NextResponse.json({ error: message }, { status: 500 });
     }
 }