feat(hub): add data dashboard and AI chat with session history

Add /dashboard with daily PnL overview and loss alerts. Extend AI coach chat with history sidebar, delete/switch sessions, message copy, and trading vs general bot modes.

Co-authored-by: Cursor <cursoragent@cursor.com>

manual_trading_hub/hub_ai/routes.py

@@ -6,7 +6,13 @@ from typing import Callable
 from fastapi import APIRouter, File, Form, HTTPException, UploadFile
 from pydantic import BaseModel, Field
 
-from hub_ai.chat import get_chat_state, send_chat_message, start_new_chat
+from hub_ai.chat import (
+    get_chat_state,
+    remove_chat_session,
+    send_chat_message,
+    start_new_chat,
+    switch_chat_session,
+)
 from hub_ai.client import model_label
 from hub_ai.config import trading_day_reset_hour
 from hub_ai.context import build_daily_context
@@ -27,6 +33,11 @@ class SummaryGenerateBody(BaseModel):
 
 class ChatNewBody(BaseModel):
     trading_day: str = ""
+    bot_mode: str = "trading"
+
+
+class ChatSwitchBody(BaseModel):
+    session_id: str = Field(..., min_length=1)
 
 
 def create_hub_ai_router(*, load_all_exchanges: Callable[[], list]) -> APIRouter:
@@ -91,7 +102,21 @@ def create_hub_ai_router(*, load_all_exchanges: Callable[[], list]) -> APIRouter
     @router.post("/chat/new")
     def api_ai_chat_new(body: ChatNewBody = ChatNewBody()):
         day = _day(body.trading_day)
-        return start_new_chat(trading_day=day)
+        return start_new_chat(trading_day=day, bot_mode=body.bot_mode or "trading")
+
+    @router.post("/chat/switch")
+    def api_ai_chat_switch(body: ChatSwitchBody):
+        try:
+            return switch_chat_session(body.session_id.strip())
+        except KeyError:
+            raise HTTPException(status_code=404, detail="会话不存在")
+
+    @router.delete("/chat/session/{session_id}")
+    def api_ai_chat_delete(session_id: str):
+        result = remove_chat_session(session_id.strip())
+        if not result.get("ok"):
+            raise HTTPException(status_code=404, detail="会话不存在")
+        return result
 
     @router.post("/chat/send")
     async def api_ai_chat_send(