feat(hub): enrich AI coach with fund history, closed trades, and chat uploads

- Add 15-day fund snapshot store and /api/hub/account on all instances

- Summary includes yesterday/today trades, fund columns, and section 5 操作建议

- Chat context distinguishes empty positions from local monitors

- Support image/document attachments in AI chat

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

manual_trading_hub/hub_ai/routes.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 
 from typing import Callable
 
-from fastapi import APIRouter, HTTPException
+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
@@ -94,12 +94,29 @@ def create_hub_ai_router(*, load_all_exchanges: Callable[[], list]) -> APIRouter
         return start_new_chat(trading_day=day)
 
     @router.post("/chat/send")
-    def api_ai_chat_send(body: ChatSendBody):
+    async def api_ai_chat_send(
+        message: str = Form(""),
+        trading_day: str = Form(""),
+        files: list[UploadFile] = File(default=[]),
+    ):
         exchanges = load_all_exchanges()
+        raw_attachments = []
+        for f in files or []:
+            if not f or not f.filename:
+                continue
+            data = await f.read()
+            raw_attachments.append(
+                {
+                    "filename": f.filename,
+                    "content_type": f.content_type or "",
+                    "data": data,
+                }
+            )
         result = send_chat_message(
             exchanges,
-            body.message,
-            trading_day=_day(body.trading_day) if body.trading_day.strip() else None,
+            message,
+            trading_day=_day(trading_day) if trading_day.strip() else None,
+            raw_attachments=raw_attachments,
         )
         if not result.get("ok"):
             raise HTTPException(status_code=502, detail=result.get("msg") or "发送失败")