feat: some fixes

app/dashboard/[workspaceId]/purchase-plans/[projectId]/page.tsx

@@ -5,7 +5,7 @@
 // ============================================================================
 
 import { useEffect, useMemo, useState } from "react";
-import { useParams, useRouter } from "next/navigation";
+import { useParams, useRouter, useSearchParams } from "next/navigation";
 import Link from "next/link";
 import {
   Loader2,
@@ -531,6 +531,7 @@ function ChannelGroup({
 export default function PurchasePlanDetailPage() {
   const params = useParams();
   const router = useRouter();
+  const searchParams = useSearchParams();
   const workspaceId = params?.workspaceId as string;
   const projectId = params?.projectId as string;
   const { projects, hasPermission } = useWorkspace();
@@ -543,6 +544,10 @@ export default function PurchasePlanDetailPage() {
   const [saveError, setSaveError] = useState<string | null>(null);
   const [editingCell, setEditingCell] = useState<EditingCell | null>(null);
 
+  // Create placements dialog
+  const prefilledCreativeId = searchParams.get("creative_id");
+  const [showCreateDialog, setShowCreateDialog] = useState(false);
+
   const [searchQuery, setSearchQuery] = useState("");
   const [statusFilter, setStatusFilter] = useState("all");
   const [expandedAll, setExpandedAll] = useState(true);
@@ -574,6 +579,13 @@ export default function PurchasePlanDetailPage() {
     }
   }, [projects, projectId]);
 
+  // Auto-open create dialog if creative_id is provided
+  useEffect(() => {
+    if (prefilledCreativeId && project) {
+      setShowCreateDialog(true);
+    }
+  }, [prefilledCreativeId, project]);
+
   useEffect(() => {
     loadPlacements();
   }, [workspaceId, projectId]);
@@ -913,6 +925,9 @@ export default function PurchasePlanDetailPage() {
               workspaceId={workspaceId}
               projectId={projectId}
               existingPlacements={placements}
+              prefilledCreativeId={prefilledCreativeId}
+              open={showCreateDialog}
+              onOpenChange={setShowCreateDialog}
               onSuccess={loadPlacements}
             >
               <Button disabled={isDemoMode}>