feat: cleanup reply flow messages + AI comparison explanation - Track extra_msg_ids in conversation for code block messages - _cleanup_conv_messages: delete all intermediate messages on cancel/send - Cancel/send/edit all clean up extra messages before restoring summary view - AI prompts now return 'comparison' field with Chinese explanation of differences - _show_ai_suggestions displays comparison text above button list - generate_more_replies returns {suggestions, comparison}

src/ai_client.py

@@ -93,7 +93,8 @@ MORE_REPLIES_PROMPT_SHORT = """你是一个邮件回复助手。根据以下邮
     {"text": "回复内容"},
     {"text": "回复内容"},
     {"text": "回复内容"}
-  ]
+  ],
+  "comparison": "用中文简要说明这三个回复的区别和适用场景，帮助用户选择。例如：回复1偏确认型，回复2带感谢，回复3更详细。"
 }
 每条回复控制在 50 字以内。
 只返回 JSON，不要包含任何其他文字。"""
@@ -113,7 +114,8 @@ MORE_REPLIES_PROMPT_FULL = """你是一个邮件回复助手。根据以下邮
     {"text": "回复内容"},
     {"text": "回复内容"},
     {"text": "回复内容"}
-  ]
+  ],
+  "comparison": "用中文简要说明这三个回复的区别和适用场景，帮助用户选择。例如：回复1偏正式确认，回复2表达感谢并跟进，回复3提供详细方案。"
 }
 每条回复控制在 300 字以内。
 只返回 JSON，不要包含任何其他文字。"""
@@ -141,7 +143,10 @@ def generate_more_replies(ai_cfg: AIConfig, sender: str, subject: str, body: str
         "response_format": {"type": "json_object"},
     }
     result = _call_deepseek(ai_cfg, payload)
-    return result.get("suggestions", [])
+    return {
+        "suggestions": result.get("suggestions", []),
+        "comparison": result.get("comparison", ""),
+    }
 
 
 def _call_deepseek(ai_cfg: AIConfig, payload: dict) -> dict:

src/tg_bot.py

@@ -272,6 +272,17 @@ def _tg_req(bot_token: str, method: str, payload: dict) -> dict:
     return result
 
 
+def _cleanup_conv_messages(bot_token: str, chat_id: int, conv: dict):
+    """清理回复流程中产生的所有中间消息"""
+    chat_id_str = str(chat_id)
+    for key in ("prompt_msg_id",):
+        mid = conv.get(key)
+        if mid:
+            delete_message(bot_token, chat_id_str, mid)
+    for mid in conv.get("extra_msg_ids", []):
+        delete_message(bot_token, chat_id_str, mid)
+
+
 # ── Update handling ─────────────────────────────────────
 
 def _do_regen(bot_token: str, cfg: Config, chat_id: int, msg_id: int, ctx: dict, conv: dict):
@@ -281,19 +292,22 @@ def _do_regen(bot_token: str, cfg: Config, chat_id: int, msg_id: int, ctx: dict,
         return
     style = conv.get("reply_style", "short")
     try:
-        new_suggestions = generate_more_replies(
+        result = generate_more_replies(
             user.ai, ctx["sender"], ctx["subject"], ctx["original_body"],
             conv.get("all_suggestions", []), style=style,
         )
+        new_suggestions = result["suggestions"]
+        comparison = result.get("comparison", "")
     except Exception as e:
         send_text(bot_token, str(chat_id), f"生成失败: {e}")
         return
     if new_suggestions:
         conv["ai_suggestions"] = new_suggestions
         conv["all_suggestions"].extend(new_suggestions)
+        conv["comparison"] = comparison
         save_conversation(chat_id, conv)
         logger.info("[ai_regen] 新生成 %d 条回复 (style=%s)", len(new_suggestions), style)
-        _show_ai_suggestions(bot_token, chat_id, msg_id, new_suggestions)
+        _show_ai_suggestions(bot_token, chat_id, msg_id, new_suggestions, comparison)
 
 
 def _do_ai_hint(bot_token: str, cfg: Config, chat_id: int, conv: dict, ctx: dict, hint: str):
@@ -303,10 +317,12 @@ def _do_ai_hint(bot_token: str, cfg: Config, chat_id: int, conv: dict, ctx: dict
         return
     style = conv.get("reply_style", "short")
     try:
-        new_suggestions = generate_more_replies(
+        result = generate_more_replies(
             user.ai, ctx["sender"], ctx["subject"], ctx["original_body"],
             conv.get("all_suggestions", []), user_hint=hint, style=style,
         )
+        new_suggestions = result["suggestions"]
+        comparison = result.get("comparison", "")
     except Exception as e:
         send_text(bot_token, str(chat_id), f"生成失败: {e}")
         delete_conversation(chat_id)
@@ -314,11 +330,12 @@ def _do_ai_hint(bot_token: str, cfg: Config, chat_id: int, conv: dict, ctx: dict
     if new_suggestions:
         conv["ai_suggestions"] = new_suggestions
         conv["all_suggestions"].extend(new_suggestions)
+        conv["comparison"] = comparison
         conv["state"] = "ai_reply_selection"
         conv.pop("prompt_msg_id", None)
         save_conversation(chat_id, conv)
         logger.info("[ai_hint] 根据提示生成 %d 条新回复", len(new_suggestions))
-        _show_ai_suggestions(bot_token, chat_id, conv["summary_msg_id"], new_suggestions)
+        _show_ai_suggestions(bot_token, chat_id, conv["summary_msg_id"], new_suggestions, comparison)
 
 
 def _handle_update(bot_token: str, cfg: Config, update: dict):
@@ -404,9 +421,12 @@ def _handle_callback(bot_token: str, cfg: Config, cb: dict):
             return
         sel_text = suggestions[idx]["text"]
         logger.info("  直接发送回复 #%d: %s", idx, sel_text[:60])
+        # 清理中间消息
+        _cleanup_conv_messages(bot_token, chat_id, conv)
         _do_send_reply(bot_token, cfg, chat_id, msg_id, ctx, sel_text)
         send_text(bot_token, str(chat_id), f"✅ 回复已发送")
         delete_conversation(chat_id)
+        # 恢复摘要视图
         can_reply = ctx.get("can_reply", True)
         is_promotion = ctx.get("summary_data", {}).get("category") == "promotion"
         links = ctx.get("summary_data", {}).get("links", [])
@@ -430,11 +450,12 @@ def _handle_callback(bot_token: str, cfg: Config, cb: dict):
 
         # 用代码块显示，点击可复制（MarkdownV2）
         escaped = sel_text.replace("\\", "\\\\").replace("`", "\\`")
-        _tg_req(bot_token, "sendMessage", {
+        copy_result = _tg_req(bot_token, "sendMessage", {
             "chat_id": str(chat_id),
             "text": f"*建议回复（点击代码块复制）:*\n`{escaped}`",
             "parse_mode": "MarkdownV2",
         })
+        copy_msg_id = copy_result["result"]["message_id"]
 
         # 进入 awaiting_reply 状态，用户可编辑后发送
         prompt_msg_id = send_text(
@@ -446,6 +467,7 @@ def _handle_callback(bot_token: str, cfg: Config, cb: dict):
         conv["summary_msg_id"] = msg_id
         conv["prompt_msg_id"] = prompt_msg_id
         conv["draft_text"] = sel_text
+        conv["extra_msg_ids"] = [copy_msg_id]
         save_conversation(chat_id, conv)
         logger.info("  建议已展示，等待用户编辑发送")
 
@@ -475,6 +497,9 @@ def _handle_callback(bot_token: str, cfg: Config, cb: dict):
             logger.info("  等待用户输入 AI 提示")
 
     elif action == CALLBACK_CANCEL:
+        conv = load_conversation(chat_id)
+        if conv:
+            _cleanup_conv_messages(bot_token, chat_id, conv)
         delete_conversation(chat_id)
         # 清除回复建议缓存，重新选择时会重新生成
         if ctx:
@@ -549,12 +574,17 @@ def _handle_message(bot_token: str, cfg: Config, msg: dict):
             delete_message(bot_token, chat_id_str, user_msg_id)
             if prompt_msg_id:
                 delete_message(bot_token, chat_id_str, prompt_msg_id)
+            for mid in conv.get("extra_msg_ids", []):
+                delete_message(bot_token, chat_id_str, mid)
             logger.info("  上下文已丢失，清理")
             return
 
         delete_message(bot_token, chat_id_str, user_msg_id)
         if prompt_msg_id:
             delete_message(bot_token, chat_id_str, prompt_msg_id)
+        # 清理 extra 消息（代码块等）
+        for mid in conv.get("extra_msg_ids", []):
+            delete_message(bot_token, chat_id_str, mid)
 
         # 合并累积的附件
         all_attachments = conv.get("pending_attachments", [])
@@ -590,8 +620,11 @@ def _handle_message(bot_token: str, cfg: Config, msg: dict):
 
 
 def _show_ai_suggestions(bot_token: str, chat_id: int, msg_id: int,
-                         suggestions: list):
+                         suggestions: list, comparison: str = ""):
-    text = "*AI 建议回复，请选择：*\n\n"
+    text = ""
+    if comparison:
+        text = f"*💡 三个回复的区别:*\n{_escape(comparison)}\n\n"
+    text += "*AI 建议回复，请选择：*"
     for i, s in enumerate(suggestions, 1):
         text += f"{i}\\. {_escape(s['text'])}\n"
     _tg_req(bot_token, "editMessageText", {