refactor(signup): 去掉注册验证码

后端已移除验证码功能。

- Signup.vue 删表单项、验证码图、getCaptchaSrc、打开弹窗拉图的 watch、
  "Invalid captcha" 错误分支和 .captcha 样式
- authModal store 删 signupForm.captcha、captchaSrc、setCaptchaSrc
- api.ts 删 getCaptcha()，signup() 参数去掉 captcha

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/shared/api.ts

@@ -9,7 +9,6 @@ export function signup(data: {
   username: string
   email: string
   password: string
-  captcha: string
 }) {
   return http.post("register", data)
 }
@@ -26,10 +25,6 @@ export function getProblemTagList() {
   return http.get<Tag[]>("problem/tags")
 }
 
-export function getCaptcha() {
-  return http.get("captcha")
-}
-
 export function getHitokoto() {
   return http.get("hitokoto")
 }

src/shared/components/Signup.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { getCaptcha, signup } from "../api"
+import { signup } from "../api"
 import { storeToRefs } from "pinia"
 import { useAuthModalStore } from "../store/authModal"
 
@@ -10,7 +10,6 @@ const {
   signupForm: form,
   signupLoading: isLoading,
   signupError: msg,
-  captchaSrc,
 } = storeToRefs(authStore)
 const signupRef = useTemplateRef("signupRef")
 
@@ -31,9 +30,6 @@ const rules: FormRules = {
       trigger: "blur",
     },
   ],
-  captcha: [
-    { required: true, message: "验证码必填", trigger: "blur", min: 1, max: 10 },
-  ],
 }
 
 function goLogin() {
@@ -50,20 +46,15 @@ function submit() {
           username: form.value.username,
           email: form.value.email,
           password: form.value.password,
-          captcha: form.value.captcha,
         })
       } catch (err: any) {
-        if (err.data === "Invalid captcha") {
+        if (err.data === "Username already exists") {
-          authStore.setSignupError("验证码不正确")
-        } else if (err.data === "Username already exists") {
           authStore.setSignupError("用户名已存在")
         } else if (err.data === "Email already exists") {
           authStore.setSignupError("邮箱已存在")
         } else {
           authStore.setSignupError("无法注册")
         }
-        getCaptchaSrc()
-        form.value.captcha = ""
       } finally {
         authStore.setSignupLoading(false)
       }
@@ -74,14 +65,6 @@ function submit() {
   })
 }
 
-async function getCaptchaSrc() {
-  const res = await getCaptcha()
-  authStore.setCaptchaSrc(res.data)
-}
-
-watch(signupModalOpen, (v) => {
-  if (v) getCaptchaSrc()
-})
 </script>
 
 <template>
@@ -134,18 +117,6 @@ watch(signupModalOpen, (v) => {
           autocomplete="new-password"
         />
       </n-form-item>
-      <n-form-item label="验证码" path="captcha">
-        <n-space>
-          <n-input
-            v-model:value="form.captcha"
-            clearable
-            name="captcha"
-            id="signup-captcha"
-            autocomplete="off"
-          />
-          <img class="captcha" :src="captchaSrc" @click="getCaptchaSrc" />
-        </n-space>
-      </n-form-item>
       <n-alert v-if="msg" type="error" :show-icon="false"> {{ msg }}</n-alert>
       <n-form-item>
         <n-space>
@@ -158,10 +129,3 @@ watch(signupModalOpen, (v) => {
     </n-form>
   </n-modal>
 </template>
-
-<style scoped>
-.captcha {
-  height: 34px;
-  cursor: pointer;
-}
-</style>

src/shared/store/authModal.ts

@@ -25,15 +25,11 @@ export const useAuthModalStore = defineStore("authModal", () => {
     email: "",
     password: "",
     passwordAgain: "",
-    captcha: "",
   })
 
   const signupLoading = ref(false)
   const signupError = ref("")
 
-  // ==================== 验证码 ====================
-  const captchaSrc = ref("")
-
   // ==================== 模态框操作 ====================
   /**
    * 打开登录模态框
@@ -123,13 +119,6 @@ export const useAuthModalStore = defineStore("authModal", () => {
     signupError.value = ""
   }
 
-  /**
-   * 设置验证码图片地址
-   */
-  function setCaptchaSrc(src: string) {
-    captchaSrc.value = src
-  }
-
   return {
     // 模态框状态
     loginModalOpen,
@@ -145,9 +134,6 @@ export const useAuthModalStore = defineStore("authModal", () => {
     signupLoading,
     signupError,
 
-    // 验证码
-    captchaSrc,
-
     // 模态框操作
     openLoginModal,
     closeLoginModal,
@@ -165,6 +151,5 @@ export const useAuthModalStore = defineStore("authModal", () => {
     setSignupLoading,
     setSignupError,
     clearSignupError,
-    setCaptchaSrc,
   }
 })