* feat(telegram): support custom apiRoot for alternative API endpoints
Add `apiRoot` config option to allow users to specify custom Telegram Bot
API endpoints (e.g., self-hosted Bot API servers). Threads the configured
base URL through all Telegram API call sites: bot creation, send, probe,
audit, media download, and api-fetch. Extends SSRF policy to dynamically
trust custom apiRoot hostname for media downloads.
Closes#28535
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* fix(telegram): thread apiRoot through allowFrom lookups
* fix(telegram): honor lookup transport and local file paths
* refactor(telegram): unify username lookup plumbing
* fix(telegram): restore doctor lookup imports
* fix: document Telegram apiRoot support (#48842) (thanks @Cypherm)
---------
Co-authored-by: Cypherm <28184436+Cypherm@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-authored-by: Ayaan Zaidi <hi@obviy.us>
