feat: show thinking indicator during AI processing, accept non-numeric verification codes

src/tg_bot.py

@@ -57,6 +57,25 @@ def send_text(tg_cfg: TelegramConfig, chat_id: str, text: str,
     return result["result"]["message_id"]
 
 
+def send_thinking(tg_cfg: TelegramConfig, chat_id: str) -> int:
+    result = _tg_req(tg_cfg, "sendMessage", {
+        "chat_id": chat_id,
+        "text": "💭 思考中...",
+    })
+    return result["result"]["message_id"]
+
+
+def edit_message(tg_cfg: TelegramConfig, chat_id: str, msg_id: int,
+                 text: str, reply_markup: dict = None):
+    payload = {
+        "chat_id": chat_id, "message_id": msg_id,
+        "text": text, "parse_mode": "MarkdownV2",
+    }
+    if reply_markup:
+        payload["reply_markup"] = reply_markup
+    _tg_req(tg_cfg, "editMessageText", payload)
+
+
 def delete_message(tg_cfg: TelegramConfig, chat_id: str, msg_id: int):
     try:
         _tg_req(tg_cfg, "deleteMessage", {
@@ -325,6 +344,11 @@ def _handle_callback(tg_cfg: TelegramConfig, cfg: Config, cb: dict):
         if not conv or conv.get("summary_msg_id") != msg_id:
             return
         logger.info("  换一批 (已有 %d 条历史)", len(conv.get("all_suggestions", [])))
+        # 先显示思考中
+        _tg_req(tg_cfg, "editMessageText", {
+            "chat_id": chat_id, "message_id": msg_id,
+            "text": "💭 思考中...", "parse_mode": None,
+        })
         try:
             new_suggestions = generate_more_replies(
                 cfg.ai, ctx["sender"], ctx["subject"], ctx["original_body"],
@@ -365,6 +389,11 @@ def _handle_callback(tg_cfg: TelegramConfig, cfg: Config, cb: dict):
             logger.info("  取消, 删除提示消息")
 
     elif action == CALLBACK_PROMO_DETAIL and ctx:
+        # 先显示思考中
+        _tg_req(tg_cfg, "editMessageText", {
+            "chat_id": chat_id, "message_id": msg_id,
+            "text": "💭 思考中...", "parse_mode": None,
+        })
         try:
             details = expand_promo_detail(
                 cfg.ai, ctx["sender"], ctx["subject"], ctx["original_body"],