diff --git a/app/api/v1/auth.py b/app/api/v1/auth.py
index 7cced2e..d5d21c2 100644
--- a/app/api/v1/auth.py
+++ b/app/api/v1/auth.py
@@ -39,13 +39,17 @@ logger = logging.getLogger("shagua.auth")
 router = APIRouter(prefix="/api/v1/auth", tags=["auth"])
 
 
-def _login_response(user, *, onboarding_completed: bool) -> TokenWithUser:
-    """登录类接口共用的响应组装。onboarding_completed 据登录请求的 device_id 算好后传入。"""
+def _login_response(
+    user, *, onboarding_completed: bool, force_onboarding: bool = False
+) -> TokenWithUser:
+    """登录类接口共用的响应组装。onboarding_completed 据登录请求的 device_id 算好后传入;
+    force_onboarding 仅测试号置 True(让应用内重新登录也重走引导)。"""
     tokens = issue_token_pair(user.id)
     return TokenWithUser(
         **tokens,
         user=UserOut.model_validate(user),
         onboarding_completed=onboarding_completed,
+        force_onboarding=force_onboarding,
     )
 
 
@@ -115,8 +119,9 @@ def sms_login(req: SmsLoginRequest, db: DbSession) -> TokenWithUser:
         if user.status != "active":
             raise HTTPException(status_code=403, detail="account disabled")
         logger.info("sms_login test_account ok user_id=%d phone=%s", user.id, mask_phone(req.phone))
-        # onboarding 恒 false:每次登录都重走引导,不读/不写 onboarding_completion 表。
-        return _login_response(user, onboarding_completed=False)
+        # onboarding 恒 false + force_onboarding=true:每次登录都重走引导(含应用内退出后重登),
+        # 不读/不写 onboarding_completion 表。
+        return _login_response(user, onboarding_completed=False, force_onboarding=True)
 
     if not verify_code(req.phone, req.code):
         raise HTTPException(status_code=400, detail="invalid sms code")
diff --git a/app/schemas/auth.py b/app/schemas/auth.py
index 600baaf..3133de0 100644
--- a/app/schemas/auth.py
+++ b/app/schemas/auth.py
@@ -48,6 +48,12 @@ class TokenWithUser(TokenPair):
         description="该 设备+账号 是否已走完新手引导(据登录请求里的 device_id 计算)。"
         "true → 客户端登录后直接进首页,跳过引导。",
     )
+    force_onboarding: bool = Field(
+        False,
+        description="是否强制本次登录走新手引导(仅测试号置 true)。客户端据此让【应用内重新登录】"
+        "(退出后再登)也重走引导,普通号为 false、按原逻辑回原页/首页。与 onboarding_completed "
+        "分工:后者管 App 启动路由,本字段管应用内登录后的去向。",
+    )
 
 
 # ===== 极光一键登录 =====
diff --git a/tests/test_test_account.py b/tests/test_test_account.py
index 97f2076..721ef56 100644
--- a/tests/test_test_account.py
+++ b/tests/test_test_account.py
@@ -13,6 +13,9 @@ import pytest
 from app.core import test_account
 from app.integrations import sms
 
+# 测试自注入的固定号:各用例用 monkeypatch 把它塞进 settings.TEST_ACCOUNT_PHONE,
+# 再断言行为。它与 .env 配的值【相互独立】——测试不读 .env(保证确定性 / CI 无 .env 也能跑),
+# 写成和 .env 同值只为直观;换任意 11 位号测试照样全过,二者无需保持一致。
 TEST_PHONE = "11111111111"
 
 
@@ -58,6 +61,7 @@ def test_login_skips_code_and_returns_tokens(client, enabled) -> None:
     assert data["user"]["phone"] == TEST_PHONE
     assert data["user"]["register_channel"] == "sms"
     assert data["onboarding_completed"] is False
+    assert data["force_onboarding"] is True   # 测试号:应用内重登也强制重走引导
     assert "access_token" in data and "refresh_token" in data
 
 
@@ -158,3 +162,4 @@ def test_non_test_phone_unaffected_when_enabled(client, enabled) -> None:
     r = client.post("/api/v1/auth/sms/login", json={"phone": phone, "code": "123456", "device_id": "d1"})
     assert r.status_code == 200, r.text
     assert r.json()["user"]["phone"] == phone
+    assert r.json()["force_onboarding"] is False   # 普通号不强制重走,按原逻辑