Checkpoint: Initial stable CheckFlow base before i18n and demo mode

src/app/api/lists/route.ts

@@ -0,0 +1,51 @@
+import { NextRequest, NextResponse } from "next/server";
+import { getServerSession } from "next-auth";
+import { authOptions } from "@/lib/auth";
+import { prisma } from "@/lib/prisma";
+
+export async function GET() {
+  try {
+    const session = await getServerSession(authOptions);
+    if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+    const lists = await prisma.list.findMany({
+      where: { userId: session.user.id },
+      orderBy: { sortOrder: "asc" },
+      include: {
+        _count: { select: { tasks: { where: { completed: false, parentId: null } } } },
+      },
+    });
+    return NextResponse.json(lists);
+  } catch (err) {
+    console.error("[lists:GET]", err);
+    return NextResponse.json({ error: "Failed to fetch lists" }, { status: 500 });
+  }
+}
+
+export async function POST(req: NextRequest) {
+  try {
+    const session = await getServerSession(authOptions);
+    if (!session) return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
+
+    const body = await req.json().catch(() => null);
+    if (!body) return NextResponse.json({ error: "Invalid body" }, { status: 400 });
+
+    const { name, color, icon } = body;
+    if (!name?.trim()) return NextResponse.json({ error: "Name required" }, { status: 400 });
+
+    const count = await prisma.list.count({ where: { userId: session.user.id } });
+    const list = await prisma.list.create({
+      data: {
+        userId: session.user.id,
+        name: name.trim(),
+        color: color || "#4B7BF5",
+        icon: icon || "list",
+        sortOrder: count,
+      },
+    });
+    return NextResponse.json(list, { status: 201 });
+  } catch (err) {
+    console.error("[lists:POST]", err);
+    return NextResponse.json({ error: "Failed to create list" }, { status: 500 });
+  }
+}