fix: prevent AI coach chat replies from truncating mid-sentence

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

manual_trading_hub/hub_ai/chat.py

@@ -7,6 +7,7 @@ from hub_ai.attachments import parse_chat_attachments
 from hub_ai.client import generate_text, model_label
 from hub_ai.config import (
     CHAT_CONTEXT_MAX_CHARS,
+    CHAT_MAX_CONTINUATIONS,
     CHAT_MAX_HISTORY_TURNS,
     CHAT_MAX_OUTPUT_TOKENS,
     CHAT_SUMMARY_EXCERPT_MAX_CHARS,
@@ -107,6 +108,7 @@ def send_chat_message(
         temperature=CHAT_TEMPERATURE,
         images_b64=parsed.get("images_b64") or None,
         max_tokens=CHAT_MAX_OUTPUT_TOKENS,
+        max_continuations=CHAT_MAX_CONTINUATIONS,
     )
     if reply.startswith("AI 调用失败"):
         return {"ok": False, "msg": reply, "session_id": sid}