聊天式交互改造（Web UI 升级）

- 前端由分步表单页升级为 DeepSeek 式聊天页（static/chat.html） - 新增 chat 包：意图识别（intent.py）+ ChatAgent（agent.py）自动驱动解析→影响→生成→QA 整条工作流，影响确认节点反问、错误分支兜底 - store.py 扩展 pending_intent 字段与 chat_messages 表 - app.py 新增 POST/GET /api/chat/{sid}/messages，GET / 返回聊天页 - README/design.md 同步聊天模式说明；测试 4 文件覆盖 - 全量 pytest 522 passed / 99.03%，覆盖率红线达标
2026-08-27 05:11:40 +08:00
parent 215c605650
commit 838a93720e
14 changed files with 1275 additions and 150 deletions
@@ -41,6 +41,10 @@ class _FakeEngine:
        )


+class ChatMessageReq(BaseModel):
+    content: str
+
+
 class SessionCreate(BaseModel):
    user_id: str = "default"

@@ -65,6 +69,7 @@ def create_app(
    engine: Any = None,
 ) -> FastAPI:
    store = store or SessionStore()
+    is_fake = engine == "fake"
    if engine == "fake":
        engine = _FakeEngine()
    elif engine is None:
@@ -72,8 +77,11 @@ def create_app(

    service = GenesisService(store=store, data_root=data_root, engine=engine)

+    from genesis.chat.agent import ChatAgent
+    chat_agent = ChatAgent(service=service, fake=is_fake, engine=engine)
+
    static_dir = Path(__file__).parent / "static"
-    index_html = (static_dir / "index.html").read_text(encoding="utf-8") if (static_dir / "index.html").exists() else "<html><body>Genesis Web UI</body></html>"
+    chat_html = (static_dir / "chat.html").read_text(encoding="utf-8") if (static_dir / "chat.html").exists() else "<html><body>Genesis Chat</body></html>"

    app = FastAPI(title="Genesis API", version=VERSION)

@@ -85,7 +93,7 @@ def create_app(

    @app.get("/", response_class=HTMLResponse)
    def index():
-        return index_html
+        return chat_html

    # ---------- 会话 ----------

@@ -232,6 +240,24 @@ def create_app(
            raise _error(404, "RESULT_NOT_FOUND", "QA 报告不存在")
        return FileResponse(rec.qa_report_path, media_type="application/json", filename="qa-report.json")

+    # ---------- 聊天 ----------
+
+    @app.post("/api/chat/{sid}/messages")
+    def chat_message(sid: str, body: ChatMessageReq):
+        try:
+            result = chat_agent.handle_message(sid, body.content)
+        except SessionNotFoundError:
+            raise _error(404, "SESSION_NOT_FOUND", f"会话不存在: {sid}")
+        return result
+
+    @app.get("/api/chat/{sid}/messages")
+    def chat_history(sid: str):
+        try:
+            service.get_session(sid)
+        except SessionNotFoundError:
+            raise _error(404, "SESSION_NOT_FOUND", f"会话不存在: {sid}")
+        return service.store.list_messages(sid)
+
    return app