fix: make bind private chat link reliable

handlers/bind.py

@@ -17,6 +17,7 @@ EMAIL_RE = re.compile(r"^[^@\s]+@[^@\s]+\.[^@\s]+$")
 async def cmd_bind(update: Update, context: ContextTypes.DEFAULT_TYPE):
     """绑定授权账号。群内引导到私聊；私聊进入等待邮箱+Token 状态。"""
     user = update.effective_user
+    logger.info(f"🔗 收到绑定指令: user={user.id}, chat_type={update.effective_chat.type}")
     existing = await get_binding(user.id)
     if existing:
         text = (
@@ -32,13 +33,19 @@ async def cmd_bind(update: Update, context: ContextTypes.DEFAULT_TYPE):
         return
 
     if update.effective_chat.type != "private":
-        bot_username = context.bot.username or (await context.bot.get_me()).username
+        me = await context.bot.get_me()
+        bot_username = me.username
         url = f"https://t.me/{bot_username}?start=bind"
         keyboard = InlineKeyboardMarkup([[InlineKeyboardButton("去私聊绑定", url=url)]])
-        reply = await update.message.reply_text(
-            "🔐 为了保护 Token，请点击按钮到私聊完成绑定。",
-            reply_markup=keyboard,
+        text = (
+            "🔐 为了保护 Token，请到私聊完成绑定。\n\n"
+            f"👉 点击进入：{url}"
         )
+        try:
+            reply = await update.message.reply_text(text, reply_markup=keyboard, disable_web_page_preview=True)
+        except Exception as e:
+            logger.warning(f"🔗 绑定跳转按钮发送失败，改发普通文本: {type(e).__name__}: {e}")
+            reply = await update.effective_chat.send_message(text, disable_web_page_preview=True)
         asyncio.create_task(auto_delete(update.message, seconds=60))
         asyncio.create_task(auto_delete(reply, seconds=60))
         return