feat: AI岗位专区 — 5个AI岗位置顶 + 首页分组展示

- schema: HotPosition 新增 category 字段 (ai/traditional)
- positions: 5 AI岗位 (AI算法/大模型应用/Prompt/AI产品/AI运维) + 7传统岗位
- frontend: 首页拆分 "🔥 AI热门岗位" 置顶高亮 + "更多岗位" 折叠
- ai服务: 新增 primaryFallbackModel (sensenova-6.7-flash-lite) 降级链路

.omo/run-continuation/ses_130b21833ffe0epQvGBjpGtogZ.json

@@ -0,0 +1,11 @@
+{
+  "sessionID": "ses_130b21833ffe0epQvGBjpGtogZ",
+  "updatedAt": "2026-06-17T05:54:06.381Z",
+  "sources": {
+    "background-task": {
+      "state": "active",
+      "reason": "2 background task(s) active",
+      "updatedAt": "2026-06-17T05:54:06.381Z"
+    }
+  }
+}

backend/src/modules/ai/ai.service.ts

@@ -1,6 +1,6 @@
-import { Injectable, Logger } from '@nestjs/common'
+import { Injectable, Logger } from "@nestjs/common"
-import axios from 'axios'
+import axios from "axios"
-import https from 'https'
+import https from "https"
 
 interface AiCallOptions {
   systemPrompt: string
@@ -15,26 +15,35 @@ const httpAgent = new https.Agent({ rejectUnauthorized: true, keepAlive: true })
 export class AiService {
   private readonly logger = new Logger(AiService.name)
 
-  private readonly primaryUrl = process.env.AI_PRIMARY_URL || 'https://token.sensenova.cn/v1'
+  private readonly primaryUrl = process.env.AI_PRIMARY_URL || "https://token.sensenova.cn/v1"
-  private readonly primaryKey = process.env.AI_PRIMARY_KEY || ''
+  private readonly primaryKey = process.env.AI_PRIMARY_KEY || ""
-  private readonly primaryModel = process.env.AI_PRIMARY_MODEL || 'deepseek-v4-flash'
+  private readonly primaryModel = process.env.AI_PRIMARY_MODEL || "deepseek-v4-flash"
+  private readonly primaryFallbackModel = process.env.AI_PRIMARY_FALLBACK_MODEL || "sensenova-6.7-flash-lite"
 
-  private readonly backupUrl = process.env.AI_BACKUP_URL || 'https://integrate.api.nvidia.com/v1'
+  private readonly backupUrl = process.env.AI_BACKUP_URL || "https://integrate.api.nvidia.com/v1"
-  private readonly backupKey = process.env.AI_BACKUP_KEY || ''
+  private readonly backupKey = process.env.AI_BACKUP_KEY || ""
-  private readonly backupModel = process.env.AI_BACKUP_MODEL || 'stepfun-ai/step-3.5-flash'
+  private readonly backupModel = process.env.AI_BACKUP_MODEL || "stepfun-ai/step-3.5-flash"
 
   async call(options: AiCallOptions): Promise<string> {
     const { systemPrompt, userMessage, temperature = 0.7, maxTokens = 2048 } = options
 
-    // Try primary AI
+    // Try primary AI (deepseek-v4-flash on sensenova)
     try {
       const result = await this.callApi(this.primaryUrl, this.primaryKey, this.primaryModel, systemPrompt, userMessage, temperature, maxTokens)
       if (result) return result
     } catch (e) {
-      this.logger.warn(`Primary AI failed: ${(e as Error).message}, trying backup...`)
+      this.logger.warn(`Primary AI failed: ${(e as Error).message}, trying primary fallback...`)
     }
 
-    // Try backup AI
+    // Try primary fallback model (sensenova-6.7-flash-lite, same provider)
+    try {
+      const result = await this.callApi(this.primaryUrl, this.primaryKey, this.primaryFallbackModel, systemPrompt, userMessage, temperature, maxTokens)
+      if (result) return result
+    } catch (e) {
+      this.logger.warn(`Primary fallback AI also failed: ${(e as Error).message}, trying backup...`)
+    }
+
+    // Try backup AI (NVIDIA)
     try {
       const result = await this.callApi(this.backupUrl, this.backupKey, this.backupModel, systemPrompt, userMessage, temperature, maxTokens)
       if (result) return result
@@ -43,7 +52,7 @@ export class AiService {
     }
 
     // Final fallback
-    throw new Error('AI 服务暂时不可用，请稍后重试')
+    throw new Error("AI \u670d\u52a1\u6682\u65f6\u4e0d\u53ef\u7528\uff0c\u8bf7\u7a0d\u540e\u91cd\u8bd5")
   }
 
   private async callApi(
@@ -56,16 +65,16 @@ export class AiService {
       {
         model,
         messages: [
-          { role: 'system', content: systemPrompt },
+          { role: "system", content: systemPrompt },
-          { role: 'user', content: userMessage },
+          { role: "user", content: userMessage },
         ],
         temperature,
         max_tokens: maxTokens,
       },
       {
         headers: {
-          'Authorization': `Bearer ${apiKey}`,
+          "Authorization": `Bearer ${apiKey}`,
-          'Content-Type': 'application/json',
+          "Content-Type": "application/json",
         },
         timeout: 60000,
         httpsAgent: httpAgent,

backend/src/modules/positions/positions.schema.ts

@@ -1,20 +1,22 @@
-import { Prop, Schema, SchemaFactory } from '@nestjs/mongoose'
+import { Prop, Schema, SchemaFactory } from "@nestjs/mongoose"
-import { Document } from 'mongoose'
+import { Document } from "mongoose"
 
 export type HotPositionDocument = HotPosition & Document
 
+export type PositionCategory = "ai" | "traditional"
+
 @Schema({ timestamps: true })
 export class HotPosition {
   @Prop({ required: true })
   name: string
 
-  @Prop({ default: '' })
+  @Prop({ default: "" })
   salary?: string
 
-  @Prop({ default: '' })
+  @Prop({ default: "" })
   company?: string
 
-  @Prop({ default: '' })
+  @Prop({ default: "" })
   icon?: string
 
   @Prop({ default: 0 })
@@ -22,7 +24,11 @@ export class HotPosition {
 
   @Prop({ default: true })
   active: boolean
+
+  @Prop({ type: String, enum: ["ai", "traditional"], default: "traditional" })
+  category: PositionCategory
 }
 
 export const HotPositionSchema = SchemaFactory.createForClass(HotPosition)
 HotPositionSchema.index({ sort: 1 })
+HotPositionSchema.index({ category: 1, active: 1 })

zhiyin-app/src/pages/index/index.vue

@@ -107,18 +107,49 @@
       </view>
     </view>
 
-    <!-- 热门岗位 -->
+    <!-- 热门岗位 - AI 专区 -->
     <view class="section">
       <view class="section-header">
         <view class="section-title-row">
-          <text class="section-title">热门岗位</text>
+          <text class="section-title">🔥 AI 热门岗位</text>
+          <text class="section-badge">NEW</text>
         </view>
-        <text class="section-desc">点击直接面试</text>
+        <text class="section-desc">AI 时代最热方向，点击直接面试</text>
       </view>
-      <view class="position-list card" v-if="!positionsLoading">
+      <view class="ai-banner card" @click="goInterview">
-        <view class="pos-item" v-for="(pos, idx) in hotPositions" :key="idx" @click="startInterview(pos)">
+        <text class="ai-banner-title">🚀 AI 正在重塑整个行业</text>
+        <text class="ai-banner-desc">大模型应用 / Agent 开发 / Prompt 工程 — 顶尖人才缺口巨大，现在上车正当时</text>
+      </view>
+      <view class="position-list card" v-if="!positionsLoading && aiPositions.length > 0">
+        <view class="pos-item" v-for="(pos, idx) in aiPositions" :key="'ai-' + idx" @click="startInterview(pos)">
           <view class="pos-left">
-            <text class="pos-icon">{{ pos.icon || posIcons[idx % posIcons.length] || '💼' }}</text>
+            <text class="pos-icon pos-icon-ai">{{ pos.icon || posIcons[idx % posIcons.length] || '🤖' }}</text>
+            <view class="pos-body">
+              <text class="pos-name">{{ pos.name }}</text>
+              <view class="pos-meta-row" v-if="pos.company || pos.salary">
+                <text class="pos-company">{{ pos.company }}</text>
+                <text class="pos-salary">{{ pos.salary }}</text>
+              </view>
+            </view>
+          </view>
+          <view class="pos-action">
+            <text class="pos-action-text pos-action-ai">立即模拟</text>
+          </view>
+        </view>
+      </view>
+
+      <!-- 更多岗位 -->
+      <view class="more-header" @click="showMore = !showMore">
+        <view class="more-header-left">
+          <text class="more-icon">🧑‍💻</text>
+          <text class="more-title">更多岗位（{{ traditionalPositions.length }}）</text>
+        </view>
+        <text class="more-arrow">{{ showMore ? '收起 ▲' : '展开 ▼' }}</text>
+      </view>
+      <view class="position-list card" v-if="showMore && !positionsLoading && traditionalPositions.length > 0">
+        <view class="pos-item" v-for="(pos, idx) in traditionalPositions" :key="'tr-' + idx" @click="startInterview(pos)">
+          <view class="pos-left">
+            <text class="pos-icon">{{ pos.icon || posIcons[(aiPositions.length + idx) % posIcons.length] || '💼' }}</text>
             <view class="pos-body">
               <text class="pos-name">{{ pos.name }}</text>
               <view class="pos-meta-row" v-if="pos.company || pos.salary">
@@ -140,7 +171,7 @@
 </template>
 
 <script setup>
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { onShow } from '@dcloudio/uni-app'
 import { api } from '../../config'
 
@@ -151,6 +182,10 @@ const posIcons = ['💻', '⚙️', '🤖', '📊', '🎨', '🧪', '📱', '
 const positionsLoading = ref(true)
 const dailyQuestion = ref(null)
 const showAnswer = ref(false)
+const showMore = ref(false)
+
+const aiPositions = computed(() => hotPositions.value.filter(p => p.category === 'ai'))
+const traditionalPositions = computed(() => hotPositions.value.filter(p => p.category !== 'ai'))
 
 const loadUserInfo = () => {
   try { const s = uni.getStorageSync('userInfo'); if (s) userInfo.value = JSON.parse(s); else userInfo.value = null } catch (e) { userInfo.value = null }
@@ -253,6 +288,7 @@ const startInterview = (pos) => uni.navigateTo({ url: `/pages/interview/intervie
 .section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20rpx; }
 .section-title { font-size: 30rpx; font-weight: 700; color: var(--color-text); }
 .section-title-row { display: flex; align-items: center; gap: 12rpx; }
+.section-badge { font-size: 18rpx; color: #fff; background: var(--color-primary); padding: 2rpx 12rpx; border-radius: 20rpx; font-weight: 500; }
 .section-desc { font-size: 22rpx; color: var(--color-primary); }
 
 .feature-list { display: flex; flex-direction: column; gap: 16rpx; }
@@ -292,12 +328,23 @@ const startInterview = (pos) => uni.navigateTo({ url: `/pages/interview/intervie
 .daily-action { font-size: 24rpx; color: var(--color-text-secondary); }
 .daily-action.primary { color: var(--color-primary); font-weight: 600; }
 
+/* AI 岗位专区 */
+.ai-banner {
+  background: linear-gradient(135deg, #FEF3C7, #FDE68A);
+  padding: 20rpx 24rpx; border-radius: var(--radius-lg); margin-bottom: 16rpx;
+  cursor: pointer;
+}
+.ai-banner:active { transform: scale(0.98); }
+.ai-banner-title { font-size: 26rpx; font-weight: 700; color: #92400E; display: block; margin-bottom: 6rpx; }
+.ai-banner-desc { font-size: 20rpx; color: #A16207; line-height: 1.5; display: block; }
+
 .position-list { border-radius: var(--radius-lg); overflow: hidden; }
 .pos-item { padding: 24rpx 28rpx; border-bottom: 1rpx solid var(--color-border); display: flex; justify-content: space-between; align-items: center; }
 .pos-item:last-child { border-bottom: none; }
 .pos-item:active { background: var(--color-bg); }
 .pos-left { display: flex; align-items: center; gap: 16rpx; flex: 1; min-width: 0; }
 .pos-icon { font-size: 36rpx; width: 56rpx; height: 56rpx; display: flex; align-items: center; justify-content: center; background: #F3F4F6; border-radius: 14rpx; flex-shrink: 0; }
+.pos-icon-ai { background: #FEF3C7; }
 .pos-body { display: flex; flex-direction: column; flex: 1; min-width: 0; }
 .pos-name { font-size: 28rpx; font-weight: 600; color: var(--color-text); }
 .pos-meta-row { display: flex; align-items: center; gap: 10rpx; margin-top: 4rpx; }
@@ -305,6 +352,19 @@ const startInterview = (pos) => uni.navigateTo({ url: `/pages/interview/intervie
 .pos-salary { font-size: 20rpx; color: var(--color-primary); background: #EEF2FF; padding: 2rpx 10rpx; border-radius: 6rpx; }
 .pos-action { flex-shrink: 0; margin-left: 16rpx; }
 .pos-action-text { font-size: 22rpx; color: var(--color-primary); font-weight: 600; }
+.pos-action-ai { color: #D97706; }
+
+/* 更多岗位折叠 */
+.more-header {
+  display: flex; justify-content: space-between; align-items: center;
+  padding: 20rpx 4rpx; margin-top: 8rpx; cursor: pointer;
+}
+.more-header:active { opacity: 0.7; }
+.more-header-left { display: flex; align-items: center; gap: 10rpx; }
+.more-icon { font-size: 28rpx; }
+.more-title { font-size: 26rpx; font-weight: 600; color: var(--color-text-secondary); }
+.more-arrow { font-size: 22rpx; color: var(--color-primary); font-weight: 500; }
+
 .loading-tip { text-align: center; padding: 40rpx; font-size: 24rpx; color: var(--color-text-tertiary); background: #FFF; border-radius: var(--radius-lg); }
 .bottom-spacer { height: 40rpx; }
 </style>