fix: update code

start.sh

@@ -20,7 +20,14 @@ echo "==> Checking crawler Python deps..."
 pip install -q -r crawler/requirements.txt 2>/dev/null || true
 
 echo "==> Seeding database (if needed)..."
-[ ! -f server/data.db ] && npm run api:seed
+# 若指定了 DB_PATH，则以 DB_PATH 为准；否则默认使用 server/data.db
+DB_FILE_PATH="${DB_PATH:-server/data.db}"
+if [ ! -f "$DB_FILE_PATH" ]; then
+  echo "  - DB file not found at $DB_FILE_PATH, running api:seed once"
+  npm run api:seed
+else
+  echo "  - Existing DB detected at $DB_FILE_PATH, skip seeding"
+fi
 
 echo "==> Starting API (http://localhost:3001)..."
 npm run api &