refactor: Remove init_token handling from admin initialization logic and related tests

backend/app/gateway/app.py

@@ -40,18 +40,16 @@ logger = logging.getLogger(__name__)
 
 
 async def _ensure_admin_user(app: FastAPI) -> None:
-    """Startup hook: generate init token on first boot; migrate orphan threads otherwise.
+    """Startup hook: handle first boot and migrate orphan threads otherwise.
 
     After admin creation, migrate orphan threads from the LangGraph
     store (metadata.user_id unset) to the admin account. This is the
     "no-auth → with-auth" upgrade path: users who ran DeerFlow without
     authentication have existing LangGraph thread data that needs an
     owner assigned.
-    First boot (no admin exists):
-      - Generates a one-time ``init_token`` stored in ``app.state.init_token``
-      - Logs the token to stdout so the operator can copy-paste it into the
-        ``/setup`` form to create the first admin account interactively.
-      - Does NOT create any user accounts automatically.
+        First boot (no admin exists):
+            - Does NOT create any user accounts automatically.
+            - The operator must visit ``/setup`` to create the first admin.
 
     Subsequent boots (admin already exists):
       - Runs the one-time "no-auth → with-auth" orphan thread migration for
@@ -62,8 +60,6 @@ async def _ensure_admin_user(app: FastAPI) -> None:
     alongside the auth module via create_all, so freshly created tables
     never contain NULL-owner rows.
     """
-    import secrets
-
     from sqlalchemy import select
 
     from app.gateway.deps import get_local_provider
@@ -74,13 +70,8 @@ async def _ensure_admin_user(app: FastAPI) -> None:
     admin_count = await provider.count_admin_users()
 
     if admin_count == 0:
-        init_token = secrets.token_urlsafe(32)
-        app.state.init_token = init_token
         logger.info("=" * 60)
         logger.info("  First boot detected — no admin account exists.")
-        logger.info("  Use the one-time token below to create the admin account.")
-        logger.info("  Copy it into the /setup form when prompted.")
-        logger.info("  INIT TOKEN: %s", init_token)
         logger.info("  Visit /setup to complete admin account creation.")
         logger.info("=" * 60)
         return
@@ -365,11 +356,6 @@ This gateway provides custom endpoints for models, MCP configuration, skills, an
         """
         return {"status": "healthy", "service": "deer-flow-gateway"}
 
-    # Ensure init_token always exists on app.state (None until lifespan sets it
-    # if no admin is found).  This prevents AttributeError in tests that don't
-    # run the full lifespan.
-    app.state.init_token = None
-
     return app
 
 

backend/app/gateway/auth/errors.py

@@ -21,7 +21,6 @@ class AuthErrorCode(StrEnum):
     PROVIDER_NOT_FOUND = "provider_not_found"
     NOT_AUTHENTICATED = "not_authenticated"
     SYSTEM_ALREADY_INITIALIZED = "system_already_initialized"
-    INVALID_INIT_TOKEN = "invalid_init_token"
 
 
 class TokenError(StrEnum):

backend/app/gateway/routers/auth.py

@@ -2,7 +2,6 @@
 
 import logging
 import os
-import secrets
 import time
 from ipaddress import ip_address, ip_network
 
@@ -389,7 +388,6 @@ class InitializeAdminRequest(BaseModel):
 
     email: EmailStr
     password: str = Field(..., min_length=8)
-    init_token: str | None = Field(default=None, description="One-time initialization token printed to server logs on first boot")
 
     _strong_password = field_validator("password")(classmethod(lambda cls, v: _validate_strong_password(v)))
 
@@ -399,31 +397,13 @@ async def initialize_admin(request: Request, response: Response, body: Initializ
     """Create the first admin account on initial system setup.
 
     Only callable when no admin exists. Returns 409 Conflict if an admin
-    already exists. Requires the one-time ``init_token`` that is logged to
-    stdout at startup whenever the system has no admin account.
+    already exists.
 
-    On success the token is consumed (one-time use), the admin account is
-    created with ``needs_setup=False``, and the session cookie is set.
+    On success, the admin account is created with ``needs_setup=False`` and
+    the session cookie is set.
     """
-    # Validate the one-time initialization token.  The token is generated
-    # at startup and stored in app.state.init_token; it is consumed here on
-    # the first successful call so it cannot be replayed.
-    # Using str | None allows a missing/null token to return 403 (not 422),
-    # giving a consistent error response regardless of whether the token is
-    # absent or incorrect.
-    stored_token: str | None = getattr(request.app.state, "init_token", None)
-    provided_token: str = body.init_token or ""
-    if stored_token is None or not secrets.compare_digest(stored_token, provided_token):
-        raise HTTPException(
-            status_code=status.HTTP_403_FORBIDDEN,
-            detail=AuthErrorResponse(code=AuthErrorCode.INVALID_INIT_TOKEN, message="Invalid or expired initialization token").model_dump(),
-        )
-
     admin_count = await get_local_provider().count_admin_users()
     if admin_count > 0:
-        # Do NOT consume the token on this error path — consuming it here
-        # would allow an attacker to exhaust the token by calling with the
-        # correct token when admin already exists (denial-of-service).
         raise HTTPException(
             status_code=status.HTTP_409_CONFLICT,
             detail=AuthErrorResponse(code=AuthErrorCode.SYSTEM_ALREADY_INITIALIZED, message="System already initialized").model_dump(),
@@ -433,16 +413,11 @@ async def initialize_admin(request: Request, response: Response, body: Initializ
         user = await get_local_provider().create_user(email=body.email, password=body.password, system_role="admin", needs_setup=False)
     except ValueError:
         # DB unique-constraint race: another concurrent request beat us.
-        # Do NOT consume the token here for the same reason as above.
         raise HTTPException(
             status_code=status.HTTP_409_CONFLICT,
             detail=AuthErrorResponse(code=AuthErrorCode.SYSTEM_ALREADY_INITIALIZED, message="System already initialized").model_dump(),
         )
 
-    # Consume the token only after successful initialization — this is the
-    # single place where one-time use is enforced.
-    request.app.state.init_token = None
-
     token = create_access_token(str(user.id), token_version=user.token_version)
     _set_session_cookie(response, token, request)
 

backend/tests/test_ensure_admin.py

@@ -63,14 +63,13 @@ def _make_session_factory(admin_row=None):
     return sf
 
 
-# ── First boot: no admin → generate init_token, return early ─────────────
+# ── First boot: no admin → return early ──────────────────────────────────
 
 
 def test_first_boot_does_not_create_admin():
-    """admin_count==0 → generate init_token, do NOT create admin automatically."""
+    """admin_count==0 → do NOT create admin automatically."""
     provider = _make_provider(admin_count=0)
     app = _make_app_stub()
-    app.state.init_token = None  # lifespan sets this
 
     with patch("app.gateway.deps.get_local_provider", return_value=provider):
         from app.gateway.app import _ensure_admin_user
@@ -78,9 +77,6 @@ def test_first_boot_does_not_create_admin():
         asyncio.run(_ensure_admin_user(app))
 
     provider.create_user.assert_not_called()
-    # init_token must have been set on app.state
-    assert app.state.init_token is not None
-    assert len(app.state.init_token) > 10
 
 
 def test_first_boot_skips_migration():
@@ -89,7 +85,6 @@ def test_first_boot_skips_migration():
     store = AsyncMock()
     store.asearch = AsyncMock(return_value=[])
     app = _make_app_stub(store=store)
-    app.state.init_token = None  # lifespan sets this
 
     with patch("app.gateway.deps.get_local_provider", return_value=provider):
         from app.gateway.app import _ensure_admin_user

backend/tests/test_initialize_admin.py

@@ -1,7 +1,7 @@
 """Tests for the POST /api/v1/auth/initialize endpoint.
 
 Covers: first-boot admin creation, rejection when system already
-initialized, invalid/missing init_token, password strength validation,
+initialized, password strength validation,
 and public accessibility (no auth cookie required).
 """
 
@@ -16,7 +16,6 @@ os.environ.setdefault("AUTH_JWT_SECRET", "test-secret-key-initialize-admin-min-3
 from app.gateway.auth.config import AuthConfig, set_auth_config
 
 _TEST_SECRET = "test-secret-key-initialize-admin-min-32"
-_INIT_TOKEN = "test-init-token-for-initialization-tests"
 
 
 @pytest.fixture(autouse=True)
@@ -45,9 +44,6 @@ def client(_setup_auth):
 
     set_auth_config(AuthConfig(jwt_secret=_TEST_SECRET))
     app = create_app()
-    # Pre-set the init token on app.state (normally done by the lifespan on
-    # first boot; tests don't run the lifespan because it requires config.yaml).
-    app.state.init_token = _INIT_TOKEN
     # Do NOT use TestClient as a context manager — that would trigger the
     # full lifespan which requires config.yaml. The auth endpoints work
     # without the lifespan (persistence engine is set up by _setup_auth).
@@ -55,11 +51,10 @@ def client(_setup_auth):
 
 
 def _init_payload(**extra):
-    """Build a valid /initialize payload with the test init_token."""
+    """Build a valid /initialize payload."""
     return {
         "email": "admin@example.com",
         "password": "Str0ng!Pass99",
-        "init_token": _INIT_TOKEN,
         **extra,
     }
 
@@ -85,53 +80,12 @@ def test_initialize_needs_setup_false(client):
     assert me.json()["needs_setup"] is False
 
 
-# ── Token validation ──────────────────────────────────────────────────────
-
-
-def test_initialize_rejects_wrong_token(client):
-    """Wrong init_token → 403 invalid_init_token."""
-    resp = client.post(
-        "/api/v1/auth/initialize",
-        json={**_init_payload(), "init_token": "wrong-token"},
-    )
-    assert resp.status_code == 403
-    assert resp.json()["detail"]["code"] == "invalid_init_token"
-
-
-def test_initialize_rejects_empty_token(client):
-    """Empty init_token → 403 (fails constant-time comparison against stored token)."""
-    resp = client.post(
-        "/api/v1/auth/initialize",
-        json={**_init_payload(), "init_token": ""},
-    )
-    assert resp.status_code == 403
-
-
-def test_initialize_token_consumed_after_success(client):
-    """After a successful /initialize the token is consumed and cannot be reused."""
-    client.post("/api/v1/auth/initialize", json=_init_payload())
-    # The token is now None; any subsequent call with the old token must be rejected (403)
-    resp2 = client.post(
-        "/api/v1/auth/initialize",
-        json={**_init_payload(), "email": "other@example.com"},
-    )
-    assert resp2.status_code == 403
-
-
 # ── Rejection when already initialized ───────────────────────────────────
 
 
 def test_initialize_rejected_when_admin_exists(client):
-    """Second call to /initialize after admin exists → 409 system_already_initialized.
-
-    The first call consumes the token.  Re-setting it on app.state simulates
-    what would happen if the operator somehow restarted or manually refreshed
-    the token (e.g., in testing).
-    """
+    """Second call to /initialize after admin exists → 409 system_already_initialized."""
     client.post("/api/v1/auth/initialize", json=_init_payload())
-    # Re-set the token so the second attempt can pass token validation
-    # and reach the admin-exists check.
-    client.app.state.init_token = _INIT_TOKEN
     resp2 = client.post(
         "/api/v1/auth/initialize",
         json={**_init_payload(), "email": "other@example.com"},
@@ -141,24 +95,6 @@ def test_initialize_rejected_when_admin_exists(client):
     assert body["detail"]["code"] == "system_already_initialized"
 
 
-def test_initialize_token_not_consumed_on_admin_exists(client):
-    """Token is NOT consumed when the admin-exists guard rejects the request.
-
-    This prevents a DoS where an attacker calls with the correct token when
-    admin already exists and permanently burns the init token.
-    """
-    client.post("/api/v1/auth/initialize", json=_init_payload())
-    # Token consumed by success above; re-simulate the scenario:
-    # admin exists, token is still valid (re-set), call should 409 and NOT consume token.
-    client.app.state.init_token = _INIT_TOKEN
-    client.post(
-        "/api/v1/auth/initialize",
-        json={**_init_payload(), "email": "other@example.com"},
-    )
-    # Token must still be set (not consumed) after the 409 rejection.
-    assert client.app.state.init_token == _INIT_TOKEN
-
-
 def test_initialize_register_does_not_block_initialization(client):
     """/register creating a user before /initialize doesn't block admin creation."""
     # Register a regular user first

frontend/src/app/(auth)/setup/page.tsx

@@ -26,9 +26,6 @@ export default function SetupPage() {
   const [error, setError] = useState("");
   const [loading, setLoading] = useState(false);
 
-  // --- Init-admin mode only ---
-  const [initToken, setInitToken] = useState("");
-
   // --- Change-password mode only ---
   const [currentPassword, setCurrentPassword] = useState("");
 
@@ -82,7 +79,6 @@ export default function SetupPage() {
         body: JSON.stringify({
           email,
           password: newPassword,
-          init_token: initToken,
         }),
       });
 
@@ -190,23 +186,6 @@ export default function SetupPage() {
                 required
               />
             </div>
-            <div className="flex flex-col space-y-1">
-              <label htmlFor="initToken" className="text-sm font-medium">
-                Initialization Token
-              </label>
-              <Input
-                id="initToken"
-                type="text"
-                placeholder="Copy from server startup logs"
-                value={initToken}
-                onChange={(e) => setInitToken(e.target.value)}
-                required
-                autoComplete="off"
-              />
-              <p className="text-muted-foreground text-xs">
-                Find the <code>INIT TOKEN</code> printed in the server startup logs.
-              </p>
-            </div>
             <div className="flex flex-col space-y-1">
               <label htmlFor="password" className="text-sm font-medium">
                 Password

frontend/src/core/auth/types.ts

@@ -40,7 +40,6 @@ const AUTH_ERROR_CODES = [
   "provider_not_found",
   "not_authenticated",
   "system_already_initialized",
-  "invalid_init_token",
 ] as const;
 
 export type AuthErrorCode = (typeof AUTH_ERROR_CODES)[number];

frontend/src/core/threads/hooks.ts

@@ -322,7 +322,7 @@ export function useThreadStream({
   useEffect(() => {
     if (
       optimisticMessages.length > 0 &&
-      thread.messages.length > prevMsgCountRef.current
+      thread.messages.length > prevMsgCountRef.current + 1
     ) {
       setOptimisticMessages([]);
     }