* Telegram: default media cap to 100MB
* Telegram: honor outbound mediaMaxMb
* Discord: add shared media upload cap
* Discord: pass mediaMaxMb to outbound sends
* Telegram: cover outbound media cap sends
* Discord: cover media upload cap config
* Docs: update Telegram media cap guide
* Docs: update Telegram config reference
* Changelog: note media upload cap fix
* Docs: note Discord upload cap behavior