feat: AI 择业顾问 MVP — 专业分析 + 岗位匹配 + 多轮对话

- backend: career-advice module with analyze/chat/positions endpoints
- frontend: career.vue page with profile form, AI advice, recommendation cards
- config/api/pages/user.vue: full integration into existing flow
- docs: PROJECT-STATUS v4.5, FEATURE-LIST v4.3, ROADMAP v4.3
- AGENTS.md: updated module count and career link paths

backend/src/modules/career-advice/career-advice.controller.ts

@@ -0,0 +1,37 @@
+import { Controller, Post, Get, Body } from "@nestjs/common"
+import { Public } from "../../common/decorators/public.decorator"
+import { CareerAdviceService, CareerProfile, ChatMessage } from "./career-advice.service"
+import { CurrentUser } from "../../common/decorators/current-user.decorator"
+
+@Controller("career-advice")
+export class CareerAdviceController {
+  constructor(private service: CareerAdviceService) {}
+
+  @Post("analyze")
+  async analyze(
+    @Body() profile: CareerProfile,
+    @CurrentUser("userId") userId: string,
+  ) {
+    if (!profile.major || !profile.major.trim()) {
+      return { error: "请填写你的专业" }
+    }
+    return this.service.analyze(profile)
+  }
+
+  @Post("chat")
+  async chat(
+    @Body() body: { message: string; history: ChatMessage[] },
+    @CurrentUser("userId") userId: string,
+  ) {
+    if (!body.message || !body.message.trim()) {
+      return { error: "请输入消息" }
+    }
+    return this.service.chat(body.message, body.history || [])
+  }
+
+  @Get("positions")
+  @Public()
+  async positions() {
+    return this.service.getHotPositions()
+  }
+}