Add Telegram Channels, X Profiles and YouTube Channels extensions

[shcheglovnd]

Summary

• Register three third-party extension repositories in repositories.json:
  • shcheglovnd/FreshRSS-xExtension-TelegramChannels
  • shcheglovnd/FreshRSS-xExtension-XProfiles
  • shcheglovnd/FreshRSS-xExtension-YouTubeChannels
• List them under a new By @shcheglovnd entry at the end of the README's third-party section.

extensions.json is left to the daily Update extension list workflow.

The extensions

Telegram Channels — follow public Telegram channels without RSSHub or any other proxy.
Paste a t.me/<channel> link into Add a feed. The extension reads the channel's public web preview
(https://t.me/s/<channel>) and hands SimplePie an RSS document built from it (simplepie_before_init).
Posts keep their formatting and links, every photo (albums included; Telegram draws them as CSS
backgrounds, which HTML scrapers lose), video thumbnails, forwards, replies, link previews, documents,
polls and buttons. Existing RSSHub /telegram/channel/… subscriptions can be read directly or
converted in one click.

X Profiles — follow X (Twitter) profiles without Nitter or an X account.
x.com renders public profile pages for logged-out visitors on the server and embeds the latest
posts' data in the page. The extension decodes that data with a small strict reader (no eval), and
builds RSS with full text, large photos, playable videos, quoted posts and link cards. Each refresh
sees the latest few original posts, and FreshRSS keeps collecting them. Nitter / xcancel
subscriptions can be read directly or converted in one click.

YouTube Channels — subscribe to YouTube channels with any link to them.
Add a feed accepts @handle, /channel/…, /c/…, /user/…, video and playlist links, and
subscribes to YouTube's own feed of that channel or playlist; when the link does not name the channel,
it is read from YouTube's page. Since late 2025 the feed server answers servers with random 404/500
errors (FreshRSS#8808), so the extension downloads
YouTube feeds itself with retries, and reads new uploads from the channel's Videos tab when every
attempt fails. Channel avatars become feed icons. Entries are the same as those FreshRSS gets from
YouTube directly, so the YouTube Video Feed extension keeps working with them.

Checks

• metadata.json sits at each repository root (directory: ".") with every field generate.php
  requires; checked by replaying its clone-and-extract step on the three repositories.
• All three pass PHPStan level 10 with this repository's strict settings against FreshRSS 1.30.0.
• Tested on FreshRSS 1.28.1 and 1.30.0. Hooks are registered by name, to keep 1.28 working.
• npm run markdownlint passes.
• All three run on my own instance: 185 Telegram channels, 7 X profiles and 40 YouTube channels.

🤖 Generated with Claude Code