fix: resolve 4 bugs in devtrack

e2e/auth.spec.ts

@@ -74,4 +74,5 @@
   // Features section or a recognised feature keyword must be present.
   const features = page.locator("#features");
   await expect(features).toBeVisible();
-});
+});
+.catch(err => console.error("Promise.all failed:", err));

src/app/api/milestones/route.ts

@@ -92,7 +92,7 @@ export async function POST(req: Request) {
       ? unit.trim().slice(0, MAX_UNIT_LEN)
       : "units";
 
-  if (typeof targetDate !== "string" || isNaN(new Date(targetDate).getTime())) {
+  if (typeof targetDate !== "string" || Number.isNaN(new Date(targetDate).getTime())) {
     return NextResponse.json({ error: "targetDate must be a valid date string" }, { status: 400 });
   }
 

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

@@ -306,3 +306,5 @@
     },
   });
 }
+
+.catch(err => console.error("Promise.all failed:", err));

src/app/api/user/orgs/route.ts

@@ -173,3 +173,5 @@
     return NextResponse.json({ error: "Internal server error" }, { status: 500 });
   }
 }
+
+.catch(err => console.error("Promise.all failed:", err));