From 71186f0ca5adde664536146f20c2991f4eb245c5 Mon Sep 17 00:00:00 2001
From: yuetsh <517252939@qq.com>
Date: Tue, 4 Aug 2026 05:24:13 -0600
Subject: [PATCH 1/4] =?UTF-8?q?feat(achievement):=20=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E6=88=90=E5=B0=B1=20API=20=E5=B1=82=E4=B8=8E=E7=B1=BB=E5=9E=8B?=
 =?UTF-8?q?=EF=BC=8C=E4=BF=AE=E5=A4=8D=20WebSocket=20=E6=B6=88=E6=81=AF?=
 =?UTF-8?q?=E5=88=86=E6=B5=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/oj/achievement/api.ts                     | 27 +++++++++++
 .../composables/useSubmissionMonitor.ts       |  6 +++
 src/utils/types.ts                            | 46 +++++++++++++++++++
 3 files changed, 79 insertions(+)
 create mode 100644 src/oj/achievement/api.ts

diff --git a/src/oj/achievement/api.ts b/src/oj/achievement/api.ts
new file mode 100644
index 0000000..8d682f5
--- /dev/null
+++ b/src/oj/achievement/api.ts
@@ -0,0 +1,27 @@
+import http from "utils/http"
+import type {
+  Achievement,
+  AchievementSummary,
+  PendingAchievement,
+} from "utils/types"
+
+export function getAchievements(name?: string) {
+  return http.get<{ username: string; achievements: Achievement[] }>(
+    "achievements",
+    { params: name ? { name } : {} },
+  )
+}
+
+export function getAchievementSummary(name?: string) {
+  return http.get<AchievementSummary>("achievements/summary", {
+    params: name ? { name } : {},
+  })
+}
+
+export function getPendingAchievements() {
+  return http.get<PendingAchievement[]>("achievements/pending")
+}
+
+export function markAchievementsRead(ids: number[]) {
+  return http.post("achievements/pending", { ids })
+}
diff --git a/src/oj/problem/composables/useSubmissionMonitor.ts b/src/oj/problem/composables/useSubmissionMonitor.ts
index e9822f1..d76de47 100644
--- a/src/oj/problem/composables/useSubmissionMonitor.ts
+++ b/src/oj/problem/composables/useSubmissionMonitor.ts
@@ -45,6 +45,12 @@ export function useSubmissionMonitor() {
 
   // ==================== WebSocket 处理 ====================
   const handleSubmissionUpdate = (data: SubmissionUpdate) => {
+    // push_to_user 复用了 submission_update 这个 channel handler，
+    // 其他类型的消息（如成就通知）会走同一条 WebSocket 帧进来，必须先挡掉
+    if (data.type !== "submission_update") {
+      return
+    }
+
     console.log("[SubmissionMonitor] 收到WebSocket更新:", data)
 
     if (data.submission_id !== submissionId.value) {
diff --git a/src/utils/types.ts b/src/utils/types.ts
index db11c1f..32d87da 100644
--- a/src/utils/types.ts
+++ b/src/utils/types.ts
@@ -723,3 +723,49 @@ export interface DetailsData {
 }
 
 export type Grade = "S" | "A" | "B" | "C"
+
+// ==================== 成就相关类型 ====================
+
+export type AchievementRarity = "bronze" | "silver" | "gold" | "platinum"
+
+export interface Achievement {
+  id: number
+  name: string
+  description: string
+  icon: string
+  rarity: AchievementRarity
+  hidden: boolean
+  // 隐藏成就未解锁时，后端已做掩码处理，以下四个字段为 null
+  metric: string | null
+  operator: "gte" | "lte" | null
+  threshold: number | null
+  unlocked: boolean
+  unlock_time: string | null
+  backfilled: boolean
+  progress: number | null
+  unlock_rate: number
+}
+
+export interface AchievementRarityStat {
+  rarity: AchievementRarity
+  label: string
+  total: number
+  unlocked: number
+}
+
+export interface PendingAchievement {
+  id: number
+  name: string
+  description: string
+  icon: string
+  rarity: AchievementRarity
+}
+
+export interface AchievementSummary {
+  username: string
+  total: number
+  unlocked: number
+  percent: number
+  rarity: AchievementRarityStat[]
+  recent: PendingAchievement[]
+}

From d81e00ee1400455367eb8035d70e30428e9c6d46 Mon Sep 17 00:00:00 2001
From: yuetsh <517252939@qq.com>
Date: Tue, 4 Aug 2026 06:42:38 -0600
Subject: [PATCH 2/4] =?UTF-8?q?feat(achievement):=20=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E5=A5=96=E6=9D=AF=E9=A6=86=E9=A1=B5=E9=9D=A2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

三种视觉状态：已解锁显示日期与获得率；未解锁公开成就显示进度条；
未解锁隐藏成就只显示稀有度，不画进度条（会泄露后端刻意遮掉的门槛）。
lte 类成就（如最短代码 ≤ 50 字符）不画百分比条，改为显示当前最好成绩。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
---
 .../components/AchievementCard.vue            | 166 +++++++++++++++++
 src/oj/achievement/index.vue                  | 169 ++++++++++++++++++
 src/routes.ts                                 |   6 +
 3 files changed, 341 insertions(+)
 create mode 100644 src/oj/achievement/components/AchievementCard.vue
 create mode 100644 src/oj/achievement/index.vue

diff --git a/src/oj/achievement/components/AchievementCard.vue b/src/oj/achievement/components/AchievementCard.vue
new file mode 100644
index 0000000..bc4a7f6
--- /dev/null
+++ b/src/oj/achievement/components/AchievementCard.vue
@@ -0,0 +1,166 @@
+<script setup lang="ts">
+import type { Achievement } from "utils/types"
+
+const props = defineProps<{ achievement: Achievement }>()
+
+const RARITY_COLOR: Record<string, string> = {
+  bronze: "#b87333",
+  silver: "#9fa6b2",
+  gold: "#e0a300",
+  platinum: "#7dd3fc",
+}
+
+const RARITY_LABEL: Record<string, string> = {
+  bronze: "青铜",
+  silver: "白银",
+  gold: "黄金",
+  platinum: "白金",
+}
+
+// 隐藏且未解锁：后端已把名称/描述/图标和条件三件套都遮成 ??? 和 null，
+// 这里只负责不要把 null 渲染出来，也不要画出会泄露门槛的进度条
+const masked = computed(
+  () => props.achievement.hidden && !props.achievement.unlocked,
+)
+
+// 获得率低于 5% 的加稀有闪光边框
+const isRare = computed(
+  () => props.achievement.unlock_rate > 0 && props.achievement.unlock_rate < 5,
+)
+
+// 只有"越多越好"的成就画进度条。lte 类（如最短 AC 代码 ≤ 50 字符）
+// 画成百分比毫无意义，改成直接显示当前最好成绩
+const showProgressBar = computed(
+  () =>
+    !masked.value &&
+    !props.achievement.unlocked &&
+    props.achievement.operator === "gte" &&
+    props.achievement.threshold !== null,
+)
+
+const showBestSoFar = computed(
+  () =>
+    !masked.value &&
+    !props.achievement.unlocked &&
+    props.achievement.operator === "lte" &&
+    props.achievement.threshold !== null,
+)
+
+const percent = computed(() => {
+  const { progress, threshold } = props.achievement
+  if (threshold === null || threshold <= 0) return 100
+  return Math.min(100, Math.round(((progress ?? 0) / threshold) * 100))
+})
+
+const unlockDate = computed(() => {
+  const { unlock_time, backfilled } = props.achievement
+  // 补发的记录不显示具体日期：一次补发会给几百人盖上同一个时间戳
+  if (backfilled || !unlock_time) return "已获得"
+  return `${new Date(unlock_time).toLocaleDateString()} 获得`
+})
+</script>
+
+<template>
+  <n-card
+    size="small"
+    :class="{ locked: !achievement.unlocked, rare: isRare }"
+    :style="{ borderColor: RARITY_COLOR[achievement.rarity] }"
+  >
+    <div class="row">
+      <div class="icon">{{ achievement.icon }}</div>
+      <div class="body">
+        <div class="title">
+          <span class="name">{{ achievement.name }}</span>
+          <n-tag
+            size="tiny"
+            :color="{
+              borderColor: RARITY_COLOR[achievement.rarity],
+              textColor: RARITY_COLOR[achievement.rarity],
+            }"
+          >
+            {{ RARITY_LABEL[achievement.rarity] }}
+          </n-tag>
+        </div>
+        <div class="desc">{{ achievement.description }}</div>
+
+        <div v-if="achievement.unlocked" class="meta">
+          <span>{{ unlockDate }}</span>
+          <span class="rate">仅 {{ achievement.unlock_rate }}% 的人获得</span>
+        </div>
+
+        <div v-else-if="showProgressBar" class="meta">
+          <n-progress
+            type="line"
+            :percentage="percent"
+            :height="6"
+            :show-indicator="false"
+          />
+          <span class="progress-text">
+            {{ achievement.progress ?? 0 }} / {{ achievement.threshold }}
+          </span>
+        </div>
+
+        <div v-else-if="showBestSoFar" class="meta">
+          <span class="progress-text">
+            目标 ≤ {{ achievement.threshold }}
+          </span>
+          <span v-if="achievement.progress !== null" class="rate">
+            当前最好 {{ achievement.progress }}
+          </span>
+        </div>
+
+        <div v-else class="meta">
+          <span class="rate">仅 {{ achievement.unlock_rate }}% 的人获得</span>
+        </div>
+      </div>
+    </div>
+  </n-card>
+</template>
+
+<style scoped>
+.row {
+  display: flex;
+  gap: 12px;
+  align-items: flex-start;
+}
+.icon {
+  font-size: 32px;
+  line-height: 1;
+}
+.body {
+  flex: 1;
+  min-width: 0;
+}
+.title {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-weight: 600;
+}
+.desc {
+  margin-top: 4px;
+  font-size: 13px;
+  opacity: 0.75;
+}
+.meta {
+  margin-top: 8px;
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+  opacity: 0.65;
+}
+.meta :deep(.n-progress) {
+  flex: 1;
+}
+.progress-text {
+  white-space: nowrap;
+}
+.locked {
+  filter: grayscale(1);
+  opacity: 0.55;
+}
+.rare {
+  box-shadow: 0 0 12px rgba(125, 211, 252, 0.55);
+}
+</style>
diff --git a/src/oj/achievement/index.vue b/src/oj/achievement/index.vue
new file mode 100644
index 0000000..a621a3c
--- /dev/null
+++ b/src/oj/achievement/index.vue
@@ -0,0 +1,169 @@
+<script setup lang="ts">
+import { getAchievements, getAchievementSummary } from "oj/achievement/api"
+import { getUserBadges } from "oj/api"
+import type { Achievement, AchievementSummary } from "utils/types"
+import AchievementCard from "./components/AchievementCard.vue"
+
+interface UserBadge {
+  id: number
+  earned_time: string
+  badge: {
+    id: number
+    name: string
+    description: string
+    icon: string
+  }
+}
+
+const route = useRoute()
+const name = computed(() => (route.query.name as string) || undefined)
+
+const achievements = ref<Achievement[]>([])
+const summary = ref<AchievementSummary | null>(null)
+const badges = ref<UserBadge[]>([])
+const tab = ref("all")
+const loading = ref(true)
+
+const filtered = computed(() => {
+  if (tab.value === "unlocked")
+    return achievements.value.filter((a) => a.unlocked)
+  if (tab.value === "locked")
+    return achievements.value.filter((a) => !a.unlocked)
+  return achievements.value
+})
+
+async function load() {
+  loading.value = true
+  try {
+    const [list, sum, badgeRes] = await Promise.all([
+      getAchievements(name.value),
+      getAchievementSummary(name.value),
+      getUserBadges(name.value),
+    ])
+    achievements.value = list.achievements
+    summary.value = sum
+    badges.value = (badgeRes ?? []) as UserBadge[]
+  } finally {
+    loading.value = false
+  }
+}
+
+onMounted(load)
+watch(name, load)
+</script>
+
+<template>
+  <div class="hall">
+    <n-spin :show="loading">
+      <n-card v-if="summary" class="overview">
+        <div class="overview-row">
+          <div class="percent">
+            <div class="big">{{ summary.percent }}%</div>
+            <div class="sub">
+              {{ summary.unlocked }} / {{ summary.total }} 已获得
+            </div>
+          </div>
+          <div class="rarity">
+            <div
+              v-for="r in summary.rarity"
+              :key="r.rarity"
+              class="rarity-item"
+            >
+              <div class="rarity-label">{{ r.label }}</div>
+              <div class="rarity-count">{{ r.unlocked }} / {{ r.total }}</div>
+            </div>
+          </div>
+        </div>
+      </n-card>
+
+      <n-tabs v-model:value="tab" type="line" class="tabs">
+        <n-tab name="all">全部</n-tab>
+        <n-tab name="unlocked">已获得</n-tab>
+        <n-tab name="locked">未获得</n-tab>
+        <n-tab name="badges">题单奖章</n-tab>
+      </n-tabs>
+
+      <div v-if="tab !== 'badges'" class="grid">
+        <AchievementCard v-for="a in filtered" :key="a.id" :achievement="a" />
+        <n-empty v-if="!filtered.length" description="这里还什么都没有" />
+      </div>
+
+      <div v-else class="grid">
+        <n-card v-for="b in badges" :key="b.id" size="small">
+          <div class="badge-row">
+            <img v-if="b.badge?.icon" :src="b.badge.icon" class="badge-icon" />
+            <div>
+              <div class="badge-name">{{ b.badge?.name }}</div>
+              <div class="badge-desc">{{ b.badge?.description }}</div>
+            </div>
+          </div>
+        </n-card>
+        <n-empty v-if="!badges.length" description="还没有获得任何题单奖章" />
+      </div>
+    </n-spin>
+  </div>
+</template>
+
+<style scoped>
+.hall {
+  max-width: 1100px;
+  margin: 0 auto;
+  padding: 16px;
+}
+.overview-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 24px;
+  flex-wrap: wrap;
+}
+.big {
+  font-size: 40px;
+  font-weight: 700;
+  line-height: 1;
+}
+.sub {
+  margin-top: 6px;
+  font-size: 13px;
+  opacity: 0.7;
+}
+.rarity {
+  display: flex;
+  gap: 20px;
+}
+.rarity-item {
+  text-align: center;
+}
+.rarity-label {
+  font-size: 12px;
+  opacity: 0.7;
+}
+.rarity-count {
+  font-weight: 600;
+  margin-top: 2px;
+}
+.tabs {
+  margin: 16px 0;
+}
+.grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
+  gap: 12px;
+}
+.badge-row {
+  display: flex;
+  gap: 12px;
+  align-items: center;
+}
+.badge-icon {
+  width: 40px;
+  height: 40px;
+}
+.badge-name {
+  font-weight: 600;
+}
+.badge-desc {
+  font-size: 12px;
+  opacity: 0.7;
+}
+</style>
diff --git a/src/routes.ts b/src/routes.ts
index f1ee90f..067f28e 100644
--- a/src/routes.ts
+++ b/src/routes.ts
@@ -82,6 +82,12 @@ export const ojs: RouteRecordRaw = {
       component: () => import("oj/user/index.vue"),
       meta: { requiresAuth: true },
     },
+    {
+      path: "achievement",
+      name: "achievement",
+      component: () => import("oj/achievement/index.vue"),
+      meta: { requiresAuth: true },
+    },
     {
       path: "setting",
       component: () => import("oj/user/setting.vue"),

From fe7095bd746fa44820cb644401b0490e0d4cc248 Mon Sep 17 00:00:00 2001
From: yuetsh <517252939@qq.com>
Date: Tue, 4 Aug 2026 06:46:20 -0600
Subject: [PATCH 3/4] =?UTF-8?q?fix(achievement):=20=E5=A5=96=E6=9D=AF?=
 =?UTF-8?q?=E9=A6=86=E5=8F=96=20ApiResponse.data=20=E8=80=8C=E9=9D=9E?=
 =?UTF-8?q?=E6=95=B4=E4=B8=AA=E5=93=8D=E5=BA=94=E5=AF=B9=E8=B1=A1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

http 客户端返回 ApiResponse<T>，载荷在 .data 里。
原写法会让页面拿到 undefined，奖杯馆整片空白。
项目没有类型检查步骤，Vite 只转译不校验，构建不会报这个错。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
---
 src/oj/achievement/index.vue | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/oj/achievement/index.vue b/src/oj/achievement/index.vue
index a621a3c..6e4b1be 100644
--- a/src/oj/achievement/index.vue
+++ b/src/oj/achievement/index.vue
@@ -40,9 +40,10 @@ async function load() {
       getAchievementSummary(name.value),
       getUserBadges(name.value),
     ])
-    achievements.value = list.achievements
-    summary.value = sum
-    badges.value = (badgeRes ?? []) as UserBadge[]
+    // http 客户端返回 ApiResponse<T>，真实载荷在 .data 里
+    achievements.value = list.data.achievements
+    summary.value = sum.data
+    badges.value = (badgeRes.data ?? []) as UserBadge[]
   } finally {
     loading.value = false
   }

From d7d80e1c1bb7f9e8459395f27fb6bdbdf6ce8eb7 Mon Sep 17 00:00:00 2001
From: yuetsh <517252939@qq.com>
Date: Tue, 4 Aug 2026 06:46:28 -0600
Subject: [PATCH 4/4] =?UTF-8?q?feat(achievement):=20=E6=B7=BB=E5=8A=A0?=
 =?UTF-8?q?=E5=85=A8=E5=B1=80=E8=A7=A3=E9=94=81=E5=BC=B9=E7=AA=97=E4=B8=8E?=
 =?UTF-8?q?=E5=BE=85=E5=BC=B9=E6=8B=89=E5=8F=96?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

推拉结合：布局层每次路由切换拉一次 pending 作为主通道，
WebSocket 只作为在线时的即时增强。纯靠推会丢消息——
前端 WebSocket 只在问题页且有提交监听时才建连。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
---
 .../composables/useSubmissionMonitor.ts       |  15 ++-
 src/shared/components/AchievementToast.vue    | 102 ++++++++++++++++++
 src/shared/layout/default.vue                 |  18 ++++
 src/shared/store/achievement.ts               |  55 ++++++++++
 4 files changed, 187 insertions(+), 3 deletions(-)
 create mode 100644 src/shared/components/AchievementToast.vue
 create mode 100644 src/shared/store/achievement.ts

diff --git a/src/oj/problem/composables/useSubmissionMonitor.ts b/src/oj/problem/composables/useSubmissionMonitor.ts
index d76de47..832b380 100644
--- a/src/oj/problem/composables/useSubmissionMonitor.ts
+++ b/src/oj/problem/composables/useSubmissionMonitor.ts
@@ -2,7 +2,8 @@ import { ref, computed, watch, onUnmounted } from "vue"
 import { useIntervalFn, useTimeoutFn } from "@vueuse/core"
 import { getSubmission } from "oj/api"
 import { SubmissionStatus } from "utils/constants"
-import type { Submission } from "utils/types"
+import type { PendingAchievement, Submission } from "utils/types"
+import { useAchievementStore } from "shared/store/achievement"
 import {
   useSubmissionWebSocket,
   type SubmissionUpdate,
@@ -46,8 +47,16 @@ export function useSubmissionMonitor() {
   // ==================== WebSocket 处理 ====================
   const handleSubmissionUpdate = (data: SubmissionUpdate) => {
     // push_to_user 复用了 submission_update 这个 channel handler，
-    // 其他类型的消息（如成就通知）会走同一条 WebSocket 帧进来，必须先挡掉
-    if (data.type !== "submission_update") {
+    // 其他类型的消息会走同一条 WebSocket 帧进来，必须先分流
+    const frame = data as unknown as {
+      type: string
+      achievements?: PendingAchievement[]
+    }
+    if (frame.type === "achievement_unlocked") {
+      useAchievementStore().enqueue(frame.achievements ?? [])
+      return
+    }
+    if (frame.type !== "submission_update") {
       return
     }
 
diff --git a/src/shared/components/AchievementToast.vue b/src/shared/components/AchievementToast.vue
new file mode 100644
index 0000000..e6fd7e9
--- /dev/null
+++ b/src/shared/components/AchievementToast.vue
@@ -0,0 +1,102 @@
+<script setup lang="ts">
+import { useAchievementStore } from "shared/store/achievement"
+
+const store = useAchievementStore()
+const { current, queue } = storeToRefs(store)
+const visible = ref(false)
+
+const RARITY_COLOR: Record<string, string> = {
+  bronze: "#b87333",
+  silver: "#9fa6b2",
+  gold: "#e0a300",
+  platinum: "#7dd3fc",
+}
+
+let timer: ReturnType<typeof setTimeout> | null = null
+let gapTimer: ReturnType<typeof setTimeout> | null = null
+
+// 多个同时解锁时排队依次弹出，不重叠堆积
+function playNext() {
+  const item = store.next()
+  if (!item) return
+  visible.value = true
+  timer = setTimeout(async () => {
+    visible.value = false
+    await store.markRead(item.id)
+    gapTimer = setTimeout(playNext, 400)
+  }, 3000)
+}
+
+watch(
+  () => queue.value.length,
+  (len) => {
+    if (len > 0 && !visible.value) playNext()
+  },
+)
+
+onUnmounted(() => {
+  if (timer) clearTimeout(timer)
+  if (gapTimer) clearTimeout(gapTimer)
+})
+</script>
+
+<template>
+  <Transition name="slide">
+    <div
+      v-if="visible && current"
+      class="toast"
+      :style="{ borderColor: RARITY_COLOR[current.rarity] }"
+    >
+      <div class="icon">{{ current.icon }}</div>
+      <div class="body">
+        <div class="label">成就解锁</div>
+        <div class="name">{{ current.name }}</div>
+        <div class="desc">{{ current.description }}</div>
+      </div>
+    </div>
+  </Transition>
+</template>
+
+<style scoped>
+.toast {
+  position: fixed;
+  right: 24px;
+  bottom: 24px;
+  z-index: 3000;
+  display: flex;
+  gap: 12px;
+  align-items: center;
+  padding: 14px 18px;
+  border-radius: 10px;
+  border: 2px solid;
+  background: var(--n-color, rgba(24, 24, 28, 0.95));
+  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
+  min-width: 260px;
+}
+.icon {
+  font-size: 34px;
+}
+.label {
+  font-size: 11px;
+  letter-spacing: 2px;
+  opacity: 0.6;
+}
+.name {
+  font-weight: 700;
+  margin-top: 2px;
+}
+.desc {
+  font-size: 12px;
+  opacity: 0.7;
+  margin-top: 2px;
+}
+.slide-enter-active,
+.slide-leave-active {
+  transition: all 0.35s ease;
+}
+.slide-enter-from,
+.slide-leave-to {
+  opacity: 0;
+  transform: translateX(40px);
+}
+</style>
diff --git a/src/shared/layout/default.vue b/src/shared/layout/default.vue
index c314529..7a01f47 100644
--- a/src/shared/layout/default.vue
+++ b/src/shared/layout/default.vue
@@ -4,6 +4,23 @@ import Header from "../components/Header.vue"
 import Login from "../components/Login.vue"
 import Signup from "../components/Signup.vue"
 import LoginSummaryModal from "../components/LoginSummaryModal.vue"
+import AchievementToast from "../components/AchievementToast.vue"
+import { useAchievementStore } from "shared/store/achievement"
+import { useUserStore } from "shared/store/user"
+
+const achievementStore = useAchievementStore()
+const userStore = useUserStore()
+const route = useRoute()
+
+// 拉取才是主通道：WebSocket 不是常驻连接（只在问题页且有提交监听时建连），
+// 所以任何页面、任何时刻解锁的成就都靠这里补上
+watch(
+  () => route.path,
+  () => {
+    if (userStore.isAuthed) achievementStore.fetchPending()
+  },
+  { immediate: true },
+)
 </script>
 
 <template>
@@ -19,6 +36,7 @@ import LoginSummaryModal from "../components/LoginSummaryModal.vue"
     <Login />
     <Signup />
     <LoginSummaryModal />
+    <AchievementToast />
     <Beian />
   </n-layout>
 </template>
diff --git a/src/shared/store/achievement.ts b/src/shared/store/achievement.ts
new file mode 100644
index 0000000..58ffb85
--- /dev/null
+++ b/src/shared/store/achievement.ts
@@ -0,0 +1,55 @@
+import {
+  getPendingAchievements,
+  markAchievementsRead,
+} from "oj/achievement/api"
+import type { PendingAchievement } from "utils/types"
+
+/**
+ * 成就解锁弹窗队列。
+ *
+ * 通知走推拉结合，后端的 UserAchievement.notified 是唯一真相来源：
+ * - 拉（主）：布局层每次路由切换拉一次 pending，覆盖全部场景，绝不丢
+ * - 推（增强）：WebSocket 只在用户当场停留在问题页时把延迟压到几百毫秒
+ *
+ * 之所以不能只靠推：前端 WebSocket 不是常驻连接，只在问题页且有提交监听时
+ * 才建连，纯推会丢消息（尤其是题单奖章，那些页面根本没建连接）。
+ */
+export const useAchievementStore = defineStore("achievement", () => {
+  const queue = ref<PendingAchievement[]>([])
+  const current = ref<PendingAchievement | null>(null)
+
+  function enqueue(items: PendingAchievement[]) {
+    if (!items?.length) return
+    // 去重：WebSocket 推来的和 pending 拉来的可能是同一批
+    const known = new Set([
+      ...queue.value.map((i) => i.id),
+      ...(current.value ? [current.value.id] : []),
+    ])
+    queue.value.push(...items.filter((i) => !known.has(i.id)))
+  }
+
+  async function fetchPending() {
+    try {
+      // http 客户端返回 ApiResponse<T>，真实载荷在 .data 里
+      const res = await getPendingAchievements()
+      enqueue(res.data ?? [])
+    } catch {
+      // 拉取失败静默处理，下次路由切换会再拉
+    }
+  }
+
+  function next() {
+    current.value = queue.value.shift() ?? null
+    return current.value
+  }
+
+  async function markRead(id: number) {
+    try {
+      await markAchievementsRead([id])
+    } catch {
+      // 标记失败下次会重复弹一次，可接受
+    }
+  }
+
+  return { queue, current, enqueue, fetchPending, next, markRead }
+})