Require QuantX channel membership

[Moli-X]

What changed

• Check each non-admin sender with Telegram getChatMember before processing messages.
• Block unverified, departed, or banned users and show an inline button linking to @QuantX.
• Apply the same gate to both Worker entrypoints.
• Fail closed when Telegram membership verification is unavailable.

Why

Only users who follow the @QuantX channel should be able to use the bot's replies and message forwarding.

Validation

• node --check Bot.js
• node --check Config/Script/Worker.js
• Membership status tests for creator, administrator, member, restricted, left, and kicked
• git diff --check