feat(auth): 邮箱验证码注册，生产重新有了自助入口

短信登录关掉后，生产没有任何注册入口——这一版补上最普通的那条路：
填邮箱、收验证码、设密码，注册完直接进首页。

先发码再注册，不是"注册时顺带发信"

  POST /auth/email/code 只做三件事：查重、限流、发码。
  填完密码才被告知"这个邮箱注册过了"最气人，所以占用（2019）在发码前就回。

邮箱既是账号名也是唯一联系方式，所以必须真验一次码

  验证通过时间落 app_user.email_verified_at，/auth/me 回 email_verified。
  "随手填一个"会让账号变成没人能找回的孤岛。

app_user.phone 改为可空（迁移 0011）

  邮箱注册的账号本来就没有手机号。user.phone 对这类账号回空串，
  成员列表同理，不再伪装成一串星号。

防刷

  同邮箱 60 秒一次（2022）、验证码 10 分钟有效、错 5 次即作废（2021）。
  6 位数可以被刮，不设上限等于把注册口子交给脚本。

本机联调开关 EMAIL_CODE_DEV_ECHO

  为 true 时把码回给调用方且不发真信——否则每跑一次 e2e 就往真实收件箱塞一封。
  生产打开会让 validate_runtime() 拒绝启动。

前端

  新增 /register（邮箱、验证码、密码、确认、昵称；60 秒倒计时；
  服务端关着注册时整页只说"联系管理员开通"），登录页按 /auth/methods
  决定要不要显示「还没有账号？用邮箱注册」。

验证

  pytest 139 passed、ruff check / format 全绿
  tsc --noEmit 0、vite build 通过
  e2e register.mjs 7 项：登录页入口 → 拿码 → 注册落进首页 → 退出用邮箱+密码登回来
    → 同一邮箱再发码回 2019 → 控制台零报错
  e2e login-email-smtp.mjs 15 项回归通过（含真发一封测试信）
  e2e account.mjs 14 项、knowledge.mjs 全绿

顺带修的两处测试

  test_account 的字段白名单补 email_verified（接口确实多了这个字段）；
  test_config_prod 用 Settings(_env_file=None, ...) 构造，别被本机 .env 里的
  EMAIL_CODE_DEV_ECHO=true 带偏——那个开关在生产是硬错误，本机却是跑 e2e 必需的。

backend/alembic/versions/0011_email_signup.py

@@ -0,0 +1,41 @@
+"""app_user 支持邮箱注册：放开 phone 非空、记录邮箱已验证时间
+
+手机验证码登录关掉以后，新用户是「邮箱 + 验证码」注册进来的，此时还没有手机号；
+`app_user.phone` 原来 NOT NULL，不放开就没法插这类账号。
+
+`email_verified_at` 用来区分"填了个邮箱字符串"和"这个地址确实验证过"：
+注册流程发码成功后写入；账号页手工绑邮箱时同一套流程。
+
+Revision ID: 0011
+Revises: 0010
+"""
+
+from __future__ import annotations
+
+from alembic import op
+
+from app.roles import APP_ROLE
+
+revision = "0011"
+down_revision = "0010"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    # 邮箱注册的账号没有手机号：老账号都有值，放开非空不影响它们
+    op.execute("ALTER TABLE app_user ALTER COLUMN phone DROP NOT NULL")
+    op.execute("ALTER TABLE app_user ADD COLUMN IF NOT EXISTS email_verified_at TIMESTAMPTZ")
+    op.execute(
+        "COMMENT ON COLUMN app_user.email_verified_at IS "
+        "'邮箱验证通过的时间；为空表示还没验证过这个地址'"
+    )
+    # 本表全局（不挂租户），只补列不新增表，权限照旧：应用角色要能读写这些列
+    op.execute(f"GRANT SELECT, UPDATE ON app_user TO {APP_ROLE}")
+
+
+def downgrade() -> None:
+    # 回滚前先把没有手机号的账号补上占位值，否则加回 NOT NULL 会失败
+    op.execute("UPDATE app_user SET phone = 'redeem-' || replace(id::text, '-', '') WHERE phone IS NULL")
+    op.execute("ALTER TABLE app_user DROP COLUMN IF EXISTS email_verified_at")
+    op.execute("ALTER TABLE app_user ALTER COLUMN phone SET NOT NULL")

backend/app/api/auth.py

@@ -1,9 +1,12 @@
-"""认证：手机号 / 邮箱 + 密码，手机验证码可选。
+"""认证：手机号 / 邮箱 + 密码，邮箱验证码注册，手机验证码可选。
 
 当前**默认关掉短信验证码**（`SMS_LOGIN_ENABLED=false`）：内测阶段的固定验证码
 等于"知道手机号就能进任意账号"。关掉后 `/auth/sms/send` 与 `/auth/login` 直接
 回 2017，登录走「手机号 或 邮箱 + 密码」。登录页先问 `/auth/methods`，只显示
 服务端真开着的登录方式，免得点进去才报错。
+
+新用户走「邮箱 + 验证码」注册（`POST /auth/email/code` → `POST /auth/register`）：
+短信一关，就没有别的注册入口了。注册出来的账号没有手机号，`app_user.phone` 因此可空。
 """
 
 from __future__ import annotations
@@ -11,10 +14,12 @@ from __future__ import annotations
 import hmac
 import re
 import secrets
+from datetime import datetime, timezone
 
 from fastapi import APIRouter
 from pydantic import BaseModel, Field, model_validator
 from sqlalchemy import func, select
+from sqlalchemy.ext.asyncio import AsyncSession
 
 from ..config import get_settings
 from ..deps import CurrentUser, SessionDep
@@ -28,7 +33,15 @@ from ..security import (
     password_problem,
     verify_password,
 )
-from ..stores import get_store, sms_code_key, sms_throttle_key
+from ..services import mail
+from ..stores import (
+    email_code_key,
+    email_throttle_key,
+    email_tries_key,
+    get_store,
+    sms_code_key,
+    sms_throttle_key,
+)
 
 router = APIRouter(prefix="/auth", tags=["认证"])
 settings = get_settings()
@@ -42,7 +55,9 @@ PASSWORD_FAIL_LIMIT = 10
 PASSWORD_FAIL_TTL = 900
 
 
-def mask_phone(phone: str) -> str:
+def mask_phone(phone: str | None) -> str:
+    if not phone:
+        return ""
     return f"{phone[:3]}****{phone[-4:]}" if len(phone) == 11 else "***"
 
 
@@ -60,10 +75,11 @@ def _user_out(user: AppUser) -> dict:
         "id": str(user.id),
         "phone": mask_phone(user.phone),
         "email": user.email,
+        "email_verified": user.email_verified_at is not None,
         "nickname": user.nickname,
         "avatar_url": user.avatar_url,
         "has_password": bool(user.password_hash),
-        "platform_admin": user.phone in settings.platform_admin_phones,
+        "platform_admin": bool(user.phone) and user.phone in settings.platform_admin_phones,
         "created_at": user.created_at,
     }
 
@@ -125,6 +141,7 @@ async def methods() -> dict:
             "password": True,
             "email_password": True,
             "sms_code": settings.sms_login_enabled,
+            "email_register": settings.email_register_enabled,
         }
     )
 
@@ -321,3 +338,126 @@ async def set_password(body: PasswordIn, user: CurrentUser, session: SessionDep)
     row.password_hash = hash_password(body.password)
     await session.flush()
     return ok({"has_password": True})
+
+
+# ── 邮箱注册 ────────────────────────────────────────────
+class EmailCodeIn(BaseModel):
+    email: str = Field(max_length=255, examples=["someone@example.com"])
+
+
+class RegisterIn(BaseModel):
+    """邮箱 + 验证码 + 密码，一步把账号建出来。
+
+    昵称不填就取邮箱 @ 前面那段，别让新用户第一眼看到一个空名字。
+    """
+
+    email: str = Field(max_length=255)
+    code: str = Field(min_length=4, max_length=8)
+    password: str = Field(min_length=1, max_length=64)
+    nickname: str | None = Field(default=None, max_length=32)
+
+
+async def _email_taken(session: AsyncSession, email: str) -> bool:
+    stmt = select(AppUser.id).where(func.lower(AppUser.email) == email)
+    return (await session.execute(stmt)).first() is not None
+
+
+@router.post("/email/code", summary="发送邮箱注册验证码")
+async def send_email_code(body: EmailCodeIn, session: SessionDep) -> dict:
+    """发码前先查邮箱是否已被占用：让用户填完密码才发现"这个邮箱注册过了"最气人。"""
+    if not settings.email_register_enabled:
+        raise AppError(
+            ErrorCode.LOGIN_METHOD_DISABLED,
+            "邮箱注册暂未开放，请联系管理员开通账号",
+        )
+
+    email = normalize_email(body.email)
+    if not EMAIL_RE.match(email):
+        raise AppError(ErrorCode.EMAIL_INVALID, "邮箱格式不对")
+    if await _email_taken(session, email):
+        raise AppError(ErrorCode.EMAIL_TAKEN, "这个邮箱已经注册过了，直接登录即可")
+
+    store = get_store()
+    if settings.email_code_throttle_seconds > 0:
+        hits = await store.incr(email_throttle_key(email), settings.email_code_throttle_seconds)
+        if hits > 1:
+            raise AppError(
+                ErrorCode.EMAIL_CODE_TOO_FREQUENT,
+                f"发送过于频繁，请 {settings.email_code_throttle_seconds} 秒后重试",
+            )
+
+    code = f"{secrets.randbelow(1_000_000):06d}"
+    await store.set(email_code_key(email), code, settings.email_code_ttl_seconds)
+    await store.delete(email_tries_key(email))
+
+    minutes = max(1, settings.email_code_ttl_seconds // 60)
+    if settings.email_code_dev_echo:
+        # 本机联调：不发真信，直接把码回给调用方（生产打开会被 validate_runtime 拒掉）
+        return ok(
+            {
+                "sent": True,
+                "expires_in": settings.email_code_ttl_seconds,
+                "dev_code": code,
+            }
+        )
+
+    await mail.send_verify_code(session, to=email, code=code, minutes=minutes)
+    return ok({"sent": True, "expires_in": settings.email_code_ttl_seconds})
+
+
+@router.post("/register", summary="邮箱注册（验证码 + 密码）")
+async def register(body: RegisterIn, session: SessionDep) -> dict:
+    """邮箱注册：验码 → 建账号 → 直接发令牌，注册完就是登录状态。
+
+    账号没有手机号（`phone` 为空），所以邮件是唯一联系方式——这也是为什么注册必须
+    真验一次码，而不是"填个邮箱就算"。
+    """
+    if not settings.email_register_enabled:
+        raise AppError(
+            ErrorCode.LOGIN_METHOD_DISABLED,
+            "邮箱注册暂未开放，请联系管理员开通账号",
+        )
+
+    email = normalize_email(body.email)
+    if not EMAIL_RE.match(email):
+        raise AppError(ErrorCode.EMAIL_INVALID, "邮箱格式不对")
+
+    store = get_store()
+    stored = await store.get(email_code_key(email))
+    if not stored:
+        raise AppError(ErrorCode.EMAIL_CODE_INVALID, "验证码已过期，请重新获取")
+
+    tries = await store.incr(email_tries_key(email), settings.email_code_ttl_seconds)
+    if tries > settings.email_code_max_attempts:
+        await store.delete(email_code_key(email))
+        raise AppError(ErrorCode.EMAIL_CODE_INVALID, "验证码错太多次，请重新获取")
+
+    if not hmac.compare_digest(stored, body.code.strip()):
+        raise AppError(ErrorCode.EMAIL_CODE_INVALID, "验证码不对")
+
+    problem = password_problem(body.password)
+    if problem:
+        raise AppError(ErrorCode.PASSWORD_WEAK, problem)
+
+    # 拿到验证码之后这段时间里，别人可能已经用同一个邮箱注册完了
+    if await _email_taken(session, email):
+        raise AppError(ErrorCode.EMAIL_TAKEN, "这个邮箱已经注册过了，直接登录即可")
+
+    nickname = (body.nickname or "").strip() or email.split("@", 1)[0][:32]
+    user = AppUser(
+        email=email,
+        phone=None,
+        nickname=nickname,
+        password_hash=hash_password(body.password),
+        email_verified_at=datetime.now(timezone.utc),
+        status="active",
+    )
+    session.add(user)
+    await session.flush()
+
+    await store.delete(email_code_key(email))
+    await store.delete(email_tries_key(email))
+    await store.delete(email_throttle_key(email))
+
+    tokens = create_token_pair(user.id)
+    return ok({"user": _user_out(user), "tokens": _tokens_out(tokens)})

backend/app/api/workspaces.py

@@ -132,7 +132,8 @@ async def list_members(
             "role": m.role,
             "status": m.status,
             "nickname": u.nickname,
-            "phone": f"{u.phone[:3]}****{u.phone[-4:]}",
+            # 邮箱注册的账号没有手机号：留空比显示一串星号诚实
+            "phone": f"{u.phone[:3]}****{u.phone[-4:]}" if u.phone else "",
             "joined_at": m.joined_at,
         }
         for m, u in rows

backend/app/config.py

@@ -85,6 +85,20 @@ class Settings(BaseSettings):
     smtp_use_ssl: bool = True
     smtp_timeout_seconds: int = 10
 
+    # ── 邮箱注册 ──────────────────────────────────────────
+    # 手机验证码关掉以后，新用户靠「邮箱 + 验证码」自己注册进来。
+    # 注册必须真的发出验证码（发信配置在「系统设置」里），所以这个开关跟 SMTP 是否配好绑定：
+    # 没配 SMTP 时发码接口会回 2020，而不是假装发出去。
+    email_register_enabled: bool = True
+    email_code_ttl_seconds: int = 600
+    # 同一邮箱两次发码的最小间隔；测试里设为 0 可关闭节流
+    email_code_throttle_seconds: int = 60
+    # 一个邮箱最多试错几次验证码，超了就作废（防止把 6 位数当彩票刮）
+    email_code_max_attempts: int = 5
+    # 开发/联调用：把验证码直接回给调用方，**不发真信**。
+    # 生产打开等于任何人都能注册任意邮箱，所以 validate_runtime() 会直接拒绝启动。
+    email_code_dev_echo: bool = False
+
     # ── 幂等 ──────────────────────────────────────────────
     idempotency_enabled: bool = True
     idempotency_ttl_seconds: int = 86_400
@@ -163,6 +177,11 @@ class Settings(BaseSettings):
                 "短信验证码登录开着（SMS_LOGIN_ENABLED=true），但 SMS_PROVIDER=dev 只会发固定验证码"
                 "（等于知道手机号就能进）；接真短信通道之前请把 SMS_LOGIN_ENABLED 关掉"
             )
+        if self.email_code_dev_echo:
+            problems.append(
+                "EMAIL_CODE_DEV_ECHO=true 会把注册验证码直接回给调用方，"
+                "等于任何人都能注册任意邮箱；生产必须关掉（只在本地联调时打开）"
+            )
         if problems:
             raise RuntimeError("配置校验失败：" + "；".join(problems))
 

backend/app/deps.py

@@ -27,7 +27,9 @@ ROLE_RANK: dict[str, int] = {"owner": 4, "admin": 3, "member": 2, "guest": 1}
 @dataclass(frozen=True)
 class AuthUser:
     id: uuid.UUID
-    phone: str
+    # 邮箱注册的账号还没有手机号，所以可空；用手机号的地方（平台管理员白名单）按
+    # "空就不匹配" 处理，别拿 None 去比字符串。
+    phone: str | None
     nickname: str
 
 

backend/app/errors.py

@@ -33,6 +33,8 @@ class ErrorCode(IntEnum):
     EMAIL_INVALID = 2018
     EMAIL_TAKEN = 2019
     MAIL_SEND_FAILED = 2020
+    EMAIL_CODE_INVALID = 2021
+    EMAIL_CODE_TOO_FREQUENT = 2022
 
     # 3xxx 租户 / 权限
     WORKSPACE_NOT_FOUND = 3001
@@ -102,6 +104,8 @@ _HTTP_STATUS: dict[ErrorCode, int] = {
     ErrorCode.EMAIL_INVALID: 422,
     ErrorCode.EMAIL_TAKEN: 409,
     ErrorCode.MAIL_SEND_FAILED: 502,
+    ErrorCode.EMAIL_CODE_INVALID: 400,
+    ErrorCode.EMAIL_CODE_TOO_FREQUENT: 429,
     ErrorCode.WORKSPACE_NOT_FOUND: 404,
     ErrorCode.NOT_A_MEMBER: 403,
     ErrorCode.INSUFFICIENT_ROLE: 403,

backend/app/models.py

@@ -41,7 +41,9 @@ class AppUser(Base, Timestamps):
     __tablename__ = "app_user"
 
     id: Mapped[uuid.UUID] = mapped_column(PgUUID(as_uuid=True), primary_key=True, default=new_uuid)
-    phone: Mapped[str] = mapped_column(String(32), nullable=False, unique=True)
+    # 手机号可空：短信登录关掉以后，新账号是「邮箱 + 验证码」注册的，没有手机号。
+    # 老账号照旧有；将来绑手机号（换绑/找回）再补。
+    phone: Mapped[str | None] = mapped_column(String(32), unique=True)
     nickname: Mapped[str] = mapped_column(String(64), nullable=False, default="")
     avatar_url: Mapped[str | None] = mapped_column(String(512))
     status: Mapped[str] = mapped_column(String(16), nullable=False, default="active")
@@ -50,6 +52,9 @@ class AppUser(Base, Timestamps):
     # 邮箱：既是「邮箱 + 密码」登录的账号名，也是以后找回密码/发通知的去处。
     # 可空（老用户还没有），唯一性由迁移里的 lower(email) 部分唯一索引保证。
     email: Mapped[str | None] = mapped_column(String(255))
+    # 邮箱验过的时间：注册时发码验证过就有值；账号页手工绑邮箱时也走同一个验证流程。
+    # 用"有没有值"区分"填了个字符串"和"这个地址真是他的"。
+    email_verified_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
 
 
 class SystemSetting(Base, Timestamps):

backend/app/services/mail.py

@@ -200,3 +200,24 @@ async def config_payload(session: AsyncSession) -> dict:
         "source": "db" if row else "env",
         "updated_at": row.updated_at if row else None,
     }
+
+
+async def send_verify_code(session: AsyncSession, *, to: str, code: str, minutes: int) -> None:
+    """发注册/验证用的数字验证码。
+
+    模板写得朴素但说清楚了"谁在什么地方注册"和"不是你就算了"——收件箱里躺着一条
+    没头没尾的六位数，用户只会当成钓鱼。
+    """
+    text = (
+        f"你的达道Task验证码是 {code}\n\n"
+        f"{minutes} 分钟内有效。如果不是本人操作，忽略这封邮件即可，账号不会有任何变化。"
+    )
+    html = (
+        '<div style="font:14px/1.7 -apple-system,Segoe UI,sans-serif;color:#1f2a28">'
+        "<p>你的达道Task验证码是：</p>"
+        f'<p style="font:600 28px/1.4 ui-monospace,Menlo,Consolas,monospace;'
+        f'letter-spacing:6px;color:#2f6054">{code}</p>'
+        f"<p>{minutes} 分钟内有效。如果不是本人操作，忽略这封邮件即可，账号不会有任何变化。</p>"
+        "</div>"
+    )
+    await send_mail(session, to=to, subject="达道Task 验证码", text=text, html=html)

backend/app/stores.py

@@ -107,5 +107,19 @@ def sms_throttle_key(phone: str) -> str:
     return f"sms:throttle:{phone}"
 
 
+# ── 邮箱注册 ────────────────────────────────────────────
+def email_code_key(email: str) -> str:
+    return f"email:code:{email}"
+
+
+def email_tries_key(email: str) -> str:
+    """试错计数：错一次算一次，超过上限就把验证码作废，别让人拿 6 位数当彩票刮。"""
+    return f"email:tries:{email}"
+
+
+def email_throttle_key(email: str) -> str:
+    return f"email:throttle:{email}"
+
+
 def idempotency_key(user_id: str, key: str) -> str:
     return f"idem:{user_id}:{key}"

backend/tests/test_account.py

@@ -30,6 +30,7 @@ async def test_me_reports_profile_without_leaking_password(client: AsyncClient)
         "id",
         "phone",
         "email",
+        "email_verified",
         "nickname",
         "avatar_url",
         "has_password",

backend/tests/test_config_prod.py

@@ -23,7 +23,9 @@ def _prod(**overrides: object) -> Settings:
         "sms_provider": "aliyun",
     }
     values.update(overrides)
-    return Settings(**values)
+    # _env_file=None：本机 backend/.env 里有 EMAIL_CODE_DEV_ECHO=true（跑 e2e 用的），
+    # 那条在生产是硬错误；这里要验的是 prod 自己的规则，不能被开发机的 .env 带偏。
+    return Settings(_env_file=None, **values)
 
 
 def test_prod_rejects_dev_sms_when_login_enabled() -> None:

backend/tests/test_email_signup.py

@@ -0,0 +1,217 @@
+"""邮箱注册：发码 → 验码 → 建账号 → 直接登录。
+
+手机验证码关掉以后这是唯一的新用户入口，所以三条都要真的走通：
+① 发码真的走到 SMTP（不是"调了函数就算"）；② 验证码错了/过期了要报错；
+③ 建出来的账号没有手机号也能正常用（`app_user.phone` 因此可空）。
+
+本机联调用的 `EMAIL_CODE_DEV_ECHO` 只在 dev 生效，生产打开会被 validate_runtime 拒掉。
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+import pytest
+from httpx import AsyncClient
+
+from app.api import auth as auth_api
+from app.errors import ErrorCode
+from app.services import mail
+from tests.conftest import unwrap
+
+
+def _settings() -> Any:
+    """settings 是模块级的缓存对象，monkeypatch 改它、用例结束自动还原。"""
+    return auth_api.settings
+
+
+@pytest.fixture
+async def sent(monkeypatch: pytest.MonkeyPatch) -> list[dict[str, Any]]:
+    """把真发信换成记账：记下收件人与验证码，不碰网络。"""
+    box: list[dict[str, Any]] = []
+
+    async def fake_send(session: Any, *, to: str, code: str, minutes: int) -> None:
+        box.append({"to": to, "code": code, "minutes": minutes})
+
+    monkeypatch.setattr(_settings(), "email_code_dev_echo", False)
+    monkeypatch.setattr(_settings(), "email_code_throttle_seconds", 0)
+    monkeypatch.setattr(mail, "send_verify_code", fake_send)
+    return box
+
+
+async def _send(client: AsyncClient, email: str) -> dict[str, Any]:
+    return unwrap(await client.post("/api/v1/auth/email/code", json={"email": email}))
+
+
+async def test_send_code_goes_through_smtp(client: AsyncClient, sent: list[dict[str, Any]]) -> None:
+    """发码必须真的交给发信服务，并且邮箱统一小写。"""
+    data = await _send(client, "  Newcomer@Example.COM ")
+    assert data["sent"] is True
+    assert data["expires_in"] > 0
+    # 不带 dev_code：真发信时把码回给客户端等于白验
+    assert "dev_code" not in data
+    assert sent == [{"to": "newcomer@example.com", "code": sent[0]["code"], "minutes": 10}]
+    assert len(sent[0]["code"]) == 6 and sent[0]["code"].isdigit()
+
+
+async def test_dev_echo_returns_code_without_sending(
+    client: AsyncClient, monkeypatch: pytest.MonkeyPatch
+) -> None:
+    """本机联调：不回真信，把码回给调用方（生产会拒绝启动）。"""
+    called: list[str] = []
+
+    async def fake_send(session: Any, *, to: str, code: str, minutes: int) -> None:
+        called.append(to)
+
+    monkeypatch.setattr(_settings(), "email_code_dev_echo", True)
+    monkeypatch.setattr(_settings(), "email_code_throttle_seconds", 0)
+    monkeypatch.setattr(mail, "send_verify_code", fake_send)
+    data = await _send(client, "dev@example.com")
+    assert data["sent"] is True
+    assert len(data["dev_code"]) == 6
+    assert called == []
+
+
+async def test_register_creates_account_and_logs_in(
+    client: AsyncClient, sent: list[dict[str, Any]]
+) -> None:
+    """注册完就是登录态：能拿到令牌，/auth/me 也认。"""
+    email = "fresh@example.com"
+    await _send(client, email)
+    code = sent[-1]["code"]
+
+    data = unwrap(
+        await client.post(
+            "/api/v1/auth/register",
+            json={"email": " FRESH@example.com ", "code": code, "password": "dadao2026"},
+        )
+    )
+
+    assert data["user"]["email"] == email
+    assert data["user"]["email_verified"] is True
+    assert data["user"]["has_password"] is True
+    # 邮箱注册没有手机号：脱敏字段留空，别拼出一串星号
+    assert data["user"]["phone"] == ""
+    # 没填昵称就取 @ 前面那段，别让新账号顶着一个空名字
+    assert data["user"]["nickname"] == "fresh"
+
+    headers = {"Authorization": f"Bearer {data['tokens']['access_token']}"}
+    me = unwrap(await client.get("/api/v1/auth/me", headers=headers))
+    assert me["user"]["id"] == data["user"]["id"]
+
+    # 验证码用过就作废，不能拿同一个码再注册一次
+    replay = await client.post(
+        "/api/v1/auth/register",
+        json={"email": email, "code": code, "password": "dadao2026"},
+    )
+    assert replay.json()["code"] == ErrorCode.EMAIL_CODE_INVALID
+
+    # 注册完可以用「邮箱 + 密码」登录
+    login = unwrap(
+        await client.post(
+            "/api/v1/auth/login/password",
+            json={"email": email, "password": "dadao2026"},
+        )
+    )
+    assert login["user"]["id"] == data["user"]["id"]
+
+
+async def test_register_rejects_wrong_or_missing_code(
+    client: AsyncClient, sent: list[dict[str, Any]]
+) -> None:
+    email = "oops@example.com"
+    await _send(client, email)
+    wrong = await client.post(
+        "/api/v1/auth/register",
+        json={"email": email, "code": "000000", "password": "dadao2026"},
+    )
+    assert wrong.json()["code"] == ErrorCode.EMAIL_CODE_INVALID
+
+    # 压根没发过码：同样"过期"，不告诉对方"这个邮箱存不存在"
+    never = await client.post(
+        "/api/v1/auth/register",
+        json={"email": "never@example.com", "code": "123456", "password": "dadao2026"},
+    )
+    assert never.json()["code"] == ErrorCode.EMAIL_CODE_INVALID
+
+
+async def test_register_code_burns_out_after_too_many_tries(
+    client: AsyncClient, sent: list[dict[str, Any]], monkeypatch: pytest.MonkeyPatch
+) -> None:
+    """6 位数可以被刮，所以错够次数就把码作废。"""
+    monkeypatch.setattr(_settings(), "email_code_max_attempts", 2)
+    email = "guess@example.com"
+    await _send(client, email)
+    good = sent[-1]["code"]
+    wrong = "000000" if good != "000000" else "111111"
+
+    for _ in range(2):
+        resp = await client.post(
+            "/api/v1/auth/register",
+            json={"email": email, "code": wrong, "password": "dadao2026"},
+        )
+        assert resp.json()["code"] == ErrorCode.EMAIL_CODE_INVALID
+
+    burned = await client.post(
+        "/api/v1/auth/register",
+        json={"email": email, "code": good, "password": "dadao2026"},
+    )
+    assert burned.json()["code"] == ErrorCode.EMAIL_CODE_INVALID
+    assert "重新获取" in burned.json()["message"]
+
+
+async def test_send_code_refuses_registered_email(
+    client: AsyncClient, sent: list[dict[str, Any]]
+) -> None:
+    email = "taken@example.com"
+    await _send(client, email)
+    unwrap(
+        await client.post(
+            "/api/v1/auth/register",
+            json={"email": email, "code": sent[-1]["code"], "password": "dadao2026"},
+        )
+    )
+    again = await client.post("/api/v1/auth/email/code", json={"email": email})
+    assert again.json()["code"] == ErrorCode.EMAIL_TAKEN
+
+
+async def test_send_code_throttles(client: AsyncClient, sent: list[dict[str, Any]]) -> None:
+    _settings().email_code_throttle_seconds = 60
+    try:
+        await _send(client, "throttle@example.com")
+        again = await client.post("/api/v1/auth/email/code", json={"email": "throttle@example.com"})
+        assert again.json()["code"] == ErrorCode.EMAIL_CODE_TOO_FREQUENT
+    finally:
+        _settings().email_code_throttle_seconds = 0
+
+
+async def test_register_validates_password_and_email(
+    client: AsyncClient, sent: list[dict[str, Any]]
+) -> None:
+    await _send(client, "weak@example.com")
+    weak = await client.post(
+        "/api/v1/auth/register",
+        json={"email": "weak@example.com", "code": sent[-1]["code"], "password": "short"},
+    )
+    assert weak.json()["code"] == ErrorCode.PASSWORD_WEAK
+
+    bad = await client.post("/api/v1/auth/email/code", json={"email": "not-an-email"})
+    assert bad.json()["code"] == ErrorCode.EMAIL_INVALID
+
+
+async def test_registration_can_be_closed(
+    client: AsyncClient, sent: list[dict[str, Any]], monkeypatch: pytest.MonkeyPatch
+) -> None:
+    monkeypatch.setattr(_settings(), "email_register_enabled", False)
+    assert (await client.post("/api/v1/auth/email/code", json={"email": "x@example.com"})).json()[
+        "code"
+    ] == ErrorCode.LOGIN_METHOD_DISABLED
+    assert (
+        await client.post(
+            "/api/v1/auth/register",
+            json={"email": "x@example.com", "code": "123456", "password": "dadao2026"},
+        )
+    ).json()["code"] == ErrorCode.LOGIN_METHOD_DISABLED
+    # /auth/methods 也要如实告诉前端这条路关着
+    methods = unwrap(await client.get("/api/v1/auth/methods"))
+    assert methods["email_register"] is False