final touches for beta skymoney (at least i think)

api/tests/setup.ts

@@ -9,6 +9,8 @@ process.env.DATABASE_URL =
 process.env.PORT = process.env.PORT || "0";          // fastify can bind an ephemeral port
 process.env.HOST ??= "127.0.0.1";
 process.env.CORS_ORIGIN = process.env.CORS_ORIGIN || "";
+process.env.AUTH_DISABLED = process.env.AUTH_DISABLED || "1";
+process.env.SEED_DEFAULT_BUDGET = process.env.SEED_DEFAULT_BUDGET || "1";
 
 export const prisma = new PrismaClient();
 
@@ -25,8 +27,18 @@ export async function resetUser(userId: string) {
 beforeAll(async () => {
   // make sure the schema is applied before running tests
   execSync("npx prisma migrate deploy", { stdio: "inherit" });
+
+  // Ensure a clean slate: wipe all tables to avoid cross-file leakage
+  await prisma.$transaction([
+    prisma.allocation.deleteMany({}),
+    prisma.transaction.deleteMany({}),
+    prisma.incomeEvent.deleteMany({}),
+    prisma.fixedPlan.deleteMany({}),
+    prisma.variableCategory.deleteMany({}),
+    prisma.user.deleteMany({}),
+  ]);
 });
 
 afterAll(async () => {
   await prisma.$disconnect();
-});
+});