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/static/index.html

@@ -231,8 +231,17 @@
           </div>
           <div id="ai-chat-messages" class="ai-panel-scroll ai-chat-messages" aria-live="polite"></div>
           <form id="ai-chat-form" class="ai-chat-form">
-            <textarea id="ai-chat-input" rows="2" placeholder="聊聊行情、心态、纪律、执行…" autocomplete="off"></textarea>
-            <button type="submit" id="btn-ai-chat-send" class="primary">发送</button>
+            <div class="ai-chat-compose">
+              <textarea id="ai-chat-input" rows="2" placeholder="聊聊行情、心态、纪律、执行…" autocomplete="off"></textarea>
+              <div class="ai-chat-compose-actions">
+                <label class="ai-chat-upload-btn" title="上传图片或 txt/md/json 文档">
+                  <input type="file" id="ai-chat-files" accept="image/*,.txt,.md,.markdown,.json" multiple hidden />
+                  附件
+                </label>
+                <span id="ai-chat-files-label" class="ai-chat-files-label"></span>
+                <button type="submit" id="btn-ai-chat-send" class="primary">发送</button>
+              </div>
+            </div>
           </form>
         </section>
       </div>
@@ -286,6 +295,6 @@
   <script src="https://unpkg.com/lightweight-charts@4.2.0/dist/lightweight-charts.standalone.production.js"></script>
   <script src="/assets/chart.js?v=20260604-upnl-contracts"></script>
   <script src="/assets/ai_review_render.js?v=2"></script>
-  <script src="/assets/app.js?v=20260606-hub-ai-ui"></script>
+  <script src="/assets/app.js?v=20260607-hub-ai-v2"></script>
 </body>
 </html>