ex-takashima f294a71bc5 feat(channels): add LINE Official Account channel support ...

Add LINE Messaging API as the 9th messaging channel using HTTP Webhook.
Supports text/image/audio messages, group chat @mention detection,
reply with quote, and loading animation.

- No external SDK required (standard library only)
- HMAC-SHA256 webhook signature verification
- Reply Token (free) with Push API fallback
- Group chat: respond only when @mentioned
- Quote original message in replies using quoteToken

Closes #146

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-14 10:01:20 +09:00

735 B

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