diff --git a/.github/workflows/ootb.yml b/.github/workflows/ootb.yml
index c6ac97d..ca96f44 100644
--- a/.github/workflows/ootb.yml
+++ b/.github/workflows/ootb.yml
@@ -27,6 +27,15 @@ jobs:
         shell: pwsh
         run: npm run build --workspaces --if-present
 
+      - name: Populate configs from defaults
+        shell: pwsh
+        run: |
+          New-Item -ItemType Directory -Force -Path configs | Out-Null
+          Get-ChildItem -Path configs-default -Filter *.json | ForEach-Object {
+            $dest = Join-Path configs $_.Name
+            if (-not (Test-Path $dest)) { Copy-Item $_.FullName $dest }
+          }
+
       - name: Run check-ootb
         shell: pwsh
         run: node tools/check-ootb.js
diff --git a/configs-default/db_config.json b/configs-default/db_config.json
index 0dff98e..c1380db 100644
--- a/configs-default/db_config.json
+++ b/configs-default/db_config.json
@@ -3,5 +3,5 @@
   "db_port": 3001,
   "http_auth": "",
   "dbDir": "./data/sfmc_data.db",
-  "modulesDir": "../modules"
+  "modulesDir": "modules"
 }
diff --git a/package.json b/package.json
index f3d3e81..8f57faf 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "module-core:typecheck": "npm run sdk:typecheck",
     "module-core:test": "echo \"no sdk tests yet\"",
     "module-core:verify": "npm run sdk:verify",
-    "check-catalog": "node /tools/check-catalog.js",
+    "check-catalog": "node tools/check-catalog.js",
     "lint": "eslint . --ext .ts,.tsx",
     "bundle": "node build-sea.mjs",
     "sea": "node --build-sea sea-config.json"
diff --git a/tools/check-catalog.js b/tools/check-catalog.js
index 26a3f4a..4cd259b 100644
--- a/tools/check-catalog.js
+++ b/tools/check-catalog.js
@@ -11,12 +11,13 @@
  *  - entry.init 仅在 sapi 类型可选
  *  - 不允许循环依赖（拓扑排序检测）
  */
-import { accessSync, constants, readFileSync } from "node:fs";
-import { resolve, join, dirname } from "node:path";
-import { fileURLToPath } from 'node:url';
-import path from "node:path";
+const { accessSync, constants, readFileSync } = require("node:fs");
+const { resolve, join } = require("node:path");
 
-const ROOT = resolve(dirname(fileURLToPath(import.meta.url)), "..");
+// 本文件以 CommonJS 方式运行（仓库根 package.json 未设置 "type": "module"），
+// 直接使用 __dirname，避免 import.meta.url 触发 "Cannot use import statement
+// outside a module" 语法错误。
+const ROOT = resolve(__dirname, "..");
 const CATALOG = join(ROOT, "modules", "catalog.json");
 const SERVICES_CATALOG = join(ROOT, "services", "catalog.json");
 /* SAPI modules no longer register through a single static entry.ts —
diff --git a/tools/check-ootb.js b/tools/check-ootb.js
index 970b038..19d6694 100644
--- a/tools/check-ootb.js
+++ b/tools/check-ootb.js
@@ -106,7 +106,9 @@ function fileContains(p, needle) {
 {
   let dbProc = null;
   try {
-    dbProc = spawn(process.execPath, [path.join(ROOT, "db-server", "index.js")], {
+    const dbEntry = path.join(ROOT, "db-server", "dist", "index.js");
+    if (!exists(dbEntry)) throw new Error(`db-server 未构建: ${dbEntry} 不存在,请先运行 npm run build`);
+    dbProc = spawn(process.execPath, [dbEntry], {
       cwd: ROOT,
       env: { ...process.env },
       stdio: ["ignore", "pipe", "pipe"],
diff --git a/tools/sim-new-user.js b/tools/sim-new-user.js
index 18990b9..cb7b752 100644
--- a/tools/sim-new-user.js
+++ b/tools/sim-new-user.js
@@ -29,8 +29,12 @@ function expect(cond, msg) {
 let dbProc = null;
 
 function startDb(simDir) {
+  const dbEntry = path.join(ROOT, "db-server", "dist", "index.js");
+  if (!fs.existsSync(dbEntry)) {
+    fail(`db-server 未构建: ${dbEntry} 不存在,请先运行 npm run build (或 npm run build --workspace db-server)`);
+  }
   const env = { ...process.env, SFMC_ROOT: simDir, DB_PORT: String(DB_PORT) };
-  dbProc = spawn(process.execPath, [path.join(ROOT, "db-server", "index.js")], {
+  dbProc = spawn(process.execPath, [dbEntry], {
     cwd: ROOT,
     env,
     stdio: ["ignore", "pipe", "pipe"],