Add Bot API 10.2 Ephemeral Messages support example

New EphemeralMessagesBot demonstrating the 36.0.0 ephemeral-message API:
- sendTextMessage with receiverUserId + callbackQueryId to send a message
  visible only to one user in a group, in response to a callback query
- PossiblyEphemeralMessage detection of ephemeral messages
- editEphemeralMessageText / deleteEphemeralMessage addressed by
  chatId + receiverUserId + ephemeralMessageId
- reply() smart-branch replying ephemerally to an ephemeral message, and the
  explicit replyToEphemeral form
- BotCommand.isEphemeral flag

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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2026-07-19 17:21:03 +06:00
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# EphemeralMessagesBot
Demonstrates Ephemeral Messages support introduced in Telegram Bot API 10.2.
Add the bot to a group and send `/ephemeral`. Tapping the button makes the bot send a message that only
you can see (an ephemeral message), then edit and delete it. The bot also detects incoming ephemeral
messages and replies to them ephemerally.
## Launch
```bash
../gradlew :EphemeralMessagesBot:run --args="BOT_TOKEN"
```