ci(notifications): collapse commit bodies in Telegram messages

[T3ST3ST3R0N]

Summary

Telegram notifications printed every commit as its whole message flattened onto one line. Squash merges with long bodies turned each notification into a wall of text, and the 4096 character trim then cut the list mid-commit.

Each commit is now one line: its subject and a linked short SHA. The rest of the message goes in a collapsed expandable quote (<blockquote expandable>), unwrapped and without Co-authored-by/Signed-off-by trailers.

🔔 New Push to dev
👤 By: someone
🔗 View Commits

Commits (1):
• fix(admin): apply role disconnect policy changes to existing node users (#1008) (3b70959)
┃ * fix(admin): synchronize users when role disconnect policies change   <- collapsed, tap to expand
┃ ...

Details

• Length: at most 10 commits are listed, then "…and N more". Their details share a length budget that keeps the message under Telegram's 4096 character limit, so no commit is cut in the middle.
• Escaping: commit text is escaped in jq for &, < and > only. jq's @html emits ', which Telegram does not accept.
• Closed PRs now say whether they were merged.
• Header: shows the commit count.
• Unchanged: the read-only token, link previews (still off), and the targets parsing.

Testing

I extracted the run: script and ran it with jq 1.7.1 (the ubuntu-latest version). A stub curl returned real GitHub API data and recorded the Telegram calls. A checker then validated the tags and entities and measured each message's visible length.

Cases:

• pushes: a squash commit, the last 8 dev commits, 12 commits with <script> & "quotes", and no commits
• empty, null and padded commit messages
• PRs: fix(admin): apply role disconnect policy changes to existing node users #1008 opened, fix(rbac): close permission scope leaks in users, groups, templates, API keys and HWIDs #979 merged (11 commits), and a PR closed without merging
• worst cases with long subjects, bodies, titles and branch names

All passed. The longest message was about 3500 characters.

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