style: align register layout with login

backend/app/api/routes/chat.py

@@ -1,15 +1,34 @@
-from fastapi import APIRouter
+from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
 
+from app.db.session import get_db
 from app.schemas.chat import ChatRequest, ChatResponse
+from app.schemas.retrieval import RetrievalRequest
+from app.services.retrieval import retrieve
 
 router = APIRouter(tags=["chat"])
 
 
 @router.post("/chat", response_model=ChatResponse)
-def chat(payload: ChatRequest) -> ChatResponse:
-    # TODO: retrieval -> context assembly -> LLM -> evidence/source checks
+def chat(payload: ChatRequest, db: Session = Depends(get_db)) -> ChatResponse:
+    """运行可复核的关键词检索；模型未配置时绝不伪造生成式回答。"""
+    result = retrieve(db, RetrievalRequest(query=payload.question, top_k=5))
+    if result.status == "no_evidence":
+        return ChatResponse(
+            answer="未检索到可用的已核验知识依据。请补充更具体的关键词，或由管理员补充并审核资料。",
+            status="no_evidence",
+            sources=[],
+            retrieval_run_id=result.run_id,
+        )
     return ChatResponse(
-        answer=f"已收到问题：{payload.question}。当前为基础壳子，尚未接入知识检索或大语言模型。",
-        status="stub",
-        sources=[],
+        answer=(
+            f"已检索到 {result.total_hits} 条已核验知识依据。当前尚未配置大语言模型，"
+            "因此系统仅返回可追溯证据，不生成或改写答案。"
+        ),
+        status="retrieval_only",
+        sources=[
+            {"title": hit.title, "source_url": hit.source_url}
+            for hit in result.results
+        ],
+        retrieval_run_id=result.run_id,
     )

backend/app/schemas/chat.py

@@ -1,3 +1,6 @@
+from typing import Literal
+from uuid import UUID
+
 from pydantic import BaseModel, Field
 
 
@@ -12,5 +15,6 @@ class SourcePreview(BaseModel):
 
 class ChatResponse(BaseModel):
     answer: str
-    status: str
+    status: Literal["retrieval_only", "no_evidence"]
     sources: list[SourcePreview] = []
+    retrieval_run_id: UUID

backend/tests/test_auth.py

@@ -271,7 +271,9 @@ def test_all_management_routes_require_admin_and_history_is_private(anonymous_cl
     for method, path in paths:
         assert c.request(method, path, json={}).status_code == 403, path
     assert c.post("/api/retrieval", json={"query": "占位"}).json()["status"] == "no_evidence"
-    assert c.post("/api/chat", json={"question": "占位"}).json()["status"] == "stub"
+    response = c.post("/api/chat", json={"question": "占位"})
+    assert response.status_code == 200
+    assert response.json()["status"] == "no_evidence"
 
 
 def test_admin_access_live_role_and_no_csrf_bypass(client, migrated_database):

backend/tests/test_catalog.py

@@ -59,12 +59,28 @@ def review(client, item, status="verified"):
     )
 
 
-def test_health_docs_and_stub(client):
+def test_health_docs_and_chat_without_evidence(client):
     assert client.get("/api/health").json()["status"] == "ok"
     assert client.get("/api/ready").json()["database"] == "connected"
     assert client.get("/docs").status_code == 200
     assert "/api/knowledge/{item_id}/review" in client.get("/openapi.json").json()["paths"]
-    assert client.post("/api/chat", json={"question": "测试"}).json()["status"] == "stub"
+    response = client.post("/api/chat", json={"question": "测试"})
+    assert response.status_code == 200
+    assert response.json()["status"] == "no_evidence"
+
+
+def test_chat_returns_real_retrieval_evidence_without_generation(client):
+    item = knowledge(client, title="那拉提测试资料", content="那拉提文旅服务测试依据")
+    assert review(client, item).status_code == 200
+
+    response = client.post("/api/chat", json={"question": "那拉提文旅服务"})
+
+    assert response.status_code == 200
+    body = response.json()
+    assert body["status"] == "retrieval_only"
+    assert "不生成" in body["answer"]
+    assert body["retrieval_run_id"]
+    assert body["sources"] == [{"title": "那拉提测试资料", "source_url": "https://example.com/"}]
 
 
 def test_legacy_create_and_missing_evidence(client):

frontend/src/api.ts

@@ -3,7 +3,7 @@ import type { VectorRetrievalResult } from './services/vectors'
 import type { ChunkKeywordResult, HybridResult } from './services/hybrid'
 
 export const getHealth = () => apiRequest<{status:string}>('/api/health')
-export const askQuestion = (question:string) => apiRequest<{answer:string;status:string;sources:{title:string;source_url?:string|null}[]}>('/api/chat',{method:'POST',body:JSON.stringify({question})})
+export const askQuestion = (question:string) => apiRequest<{answer:string;status:'retrieval_only'|'no_evidence';sources:{title:string;source_url?:string|null}[];retrieval_run_id:string}>('/api/chat',{method:'POST',body:JSON.stringify({question})})
 export const getKnowledge = () => apiRequest<{id:number;title:string;category:string;content:string;source_url:string|null;verification_status:string;version:number}[]>('/api/knowledge')
 export const createKnowledge = (payload:{title:string;category:string;content:string;source_url?:string;collected_at?:string}) => apiRequest('/api/knowledge',{method:'POST',body:JSON.stringify(payload)},true)
 

frontend/src/views/RegisterView.vue

@@ -5,5 +5,5 @@ import { register } from '../services/auth'
 const username=ref(''),password=ref(''),confirmPassword=ref(''),error=ref(''),notice=ref(''),submitting=ref(false),router=useRouter()
 async function submit(){if(submitting.value)return;error.value='';notice.value='';if(password.value!==confirmPassword.value){error.value='两次输入的密码不一致。';return}submitting.value=true;try{await register({username:username.value.trim(),password:password.value});notice.value='注册成功，正在跳转登录页…';window.setTimeout(()=>router.push('/login'),500)}catch(cause){error.value=cause instanceof Error?cause.message:'注册失败，请稍后重试。'}finally{submitting.value=false}}
 </script>
-<template><main class="auth-page"><section class="auth-panel"><RouterLink to="/">边疆红驿</RouterLink><form class="auth-card" @submit.prevent="submit"><p>CREATE ACCOUNT</p><h1>注册账户</h1><span>新注册账户默认为普通用户；管理员权限仅能由后端授权。</span><label>用户名<input v-model.trim="username" autocomplete="username" required minlength="3" maxlength="100" placeholder="至少 3 个字符"/></label><label>密码<input v-model="password" autocomplete="new-password" required minlength="15" type="password" placeholder="至少 15 位密码"/></label><label>确认密码<input v-model="confirmPassword" autocomplete="new-password" required type="password" placeholder="再次输入密码"/></label><p v-if="error" class="auth-error" role="alert">{{error}}</p><p v-if="notice" class="auth-notice" role="status">{{notice}}</p><button :disabled="submitting">{{submitting?'注册中…':'创建账户'}}</button><small>已有账户？ <RouterLink to="/login">前往登录</RouterLink></small></form></section><section class="auth-intro"><p>TRUSTWORTHY KNOWLEDGE</p><h2>从可靠资料出发，<br>再开始提问。</h2><span>未审核知识不会进入正式检索；没有可靠依据时，系统会明确说明知识不足。</span></section></main></template>
-<style scoped>.auth-page{min-height:100vh;display:grid;grid-template-columns:.9fr 1.1fr;background:#f5f3eb}.auth-intro{padding:12vw;background:#a5423a;color:#fff;display:flex;flex-direction:column;justify-content:center}.auth-intro p,.auth-card>p{letter-spacing:.14em;font-size:11px;font-weight:700;color:#efc9be}.auth-intro h2{font-size:clamp(40px,4.7vw,64px);line-height:1.08;letter-spacing:-.06em;margin:20px 0}.auth-intro span{max-width:410px;line-height:1.9;color:#f6ded7}.auth-panel{padding:34px;display:flex;flex-direction:column;align-items:center;color:#214d3b;font-weight:700}.auth-panel>a{align-self:stretch}.auth-card{width:min(100%,410px);margin:auto 0;padding:34px;border:1px solid #e3e1d8;border-radius:16px;background:#fffefa;box-shadow:0 18px 45px #27332b14;display:grid;gap:14px}.auth-card h1{margin:0;font-size:30px;letter-spacing:-.04em;color:#27332b}.auth-card>span{color:#707a70;font-size:12px;line-height:1.7;font-weight:400}.auth-card label{display:grid;gap:7px;font-size:12px;color:#526052}.auth-card input{padding:12px;border:1px solid #dfe2d8;border-radius:9px;font:inherit;outline-color:#6f967c}.auth-card button{border:0;border-radius:9px;padding:13px;background:#214d3b;color:#fff;font-weight:700}.auth-card small{color:#707a70;font-weight:400}.auth-error,.auth-notice{margin:0;padding:10px;border-radius:8px;font-size:12px}.auth-error{background:#f8e9e4;color:#a5423a}.auth-notice{background:#e8f1e8;color:#356443}@media(max-width:780px){.auth-page{grid-template-columns:1fr}.auth-panel{padding:22px;order:2}.auth-intro{padding:48px 28px;order:1}.auth-card{margin:44px 0}}</style>
+<template><main class="auth-page"><section class="auth-panel"><RouterLink to="/">边疆红驿</RouterLink><form class="auth-card" @submit.prevent="submit"><p>CREATE ACCOUNT</p><h1>注册账户</h1><span>新注册账户默认为普通用户；管理员权限仅能由后端授权。</span><label>用户名<input v-model.trim="username" autocomplete="username" required minlength="3" maxlength="100" placeholder="至少 3 个字符"/></label><label>密码<input v-model="password" autocomplete="new-password" required minlength="15" type="password" placeholder="至少 15 位密码"/></label><label>确认密码<input v-model="confirmPassword" autocomplete="new-password" required type="password" placeholder="再次输入密码"/></label><p v-if="error" class="auth-error" role="alert">{{error}}</p><p v-if="notice" class="auth-notice" role="status">{{notice}}</p><button :disabled="submitting">{{submitting?'注册中…':'创建账户'}}</button><small>已有账户？ <RouterLink to="/login">前往登录</RouterLink></small></form></section><section class="auth-intro"><p>边疆红驿 · NALATI KNOWLEDGE HUB</p><h2>从可靠资料出发，<br>再开始提问。</h2><span>未审核知识不会进入正式检索；没有可靠依据时，系统会明确说明知识不足。</span></section></main></template>
+<style scoped>.auth-page{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr;background:#f5f3eb}.auth-intro{padding:12vw;background:#214d3b;color:#fff;display:flex;flex-direction:column;justify-content:center;order:0}.auth-intro p,.auth-card>p{letter-spacing:.14em;font-size:11px;font-weight:700;color:#b8d1be}.auth-intro h2{font-size:clamp(42px,5vw,68px);line-height:1.08;letter-spacing:-.06em;margin:20px 0}.auth-intro span{max-width:410px;line-height:1.9;color:#d7e7da}.auth-panel{padding:34px;display:flex;flex-direction:column;align-items:center;color:#214d3b;font-weight:700;order:1}.auth-panel>a{align-self:stretch}.auth-card{width:min(100%,410px);margin:auto 0;padding:34px;border:1px solid #e3e1d8;border-radius:16px;background:#fffefa;box-shadow:0 18px 45px #27332b14;display:grid;gap:16px}.auth-card h1{margin:0;font-size:30px;letter-spacing:-.04em;color:#27332b}.auth-card>span{color:#707a70;font-size:12px;line-height:1.7;font-weight:400}.auth-card label{display:grid;gap:7px;font-size:12px;color:#526052}.auth-card input{padding:12px;border:1px solid #dfe2d8;border-radius:9px;font:inherit;outline-color:#6f967c}.auth-card button{border:0;border-radius:9px;padding:13px;background:#214d3b;color:#fff;font-weight:700}.auth-card small{color:#707a70;font-weight:400}.auth-error,.auth-notice{margin:0;padding:10px;border-radius:8px;font-size:12px;letter-spacing:normal!important}.auth-error{background:#f8e9e4;color:#a5423a}.auth-notice{background:#e8f1e8;color:#356443}@media(max-width:780px){.auth-page{grid-template-columns:1fr}.auth-panel{padding:22px;order:2}.auth-intro{padding:48px 28px;order:1}.auth-card{margin:44px 0}}</style>