Rename the comments command to user-info and extend it

[Kobzol]

The compiler team has been discussing ways of quickly gathering some basic information about a GitHub account. This PR extends the previous comments Zulip triagebot command and turns it into a more general user-info command, which shows recent activity (PRs, repository) and account creation date for the given GitHub user account.

Here is how it currently looks like for my account:

User kobzol activity

• Account created at: 2013-05-27 10:14 UTC (4661 days ago)
• Public repository count: 270
• PRs created in past 7 days: 14
  • 3 open, 0 closed, 11 merged
  • Last 100 PRs created in the past 25 day(s)
  • PRs opened in 7 repo(s)
  • PRs opened in 3 organization(s) (It4innovations, mrlvsb, rust-lang)
• rust-lang PRs created in past 7 days: 7
  • Last 100 rust-lang PRs created in the past 40 day(s)
• Repos created in past 7 days: 0
  • Out of that, 0 are forks

Recent comments in rust-lang:

• Optimize dependency file search (rust#153131, time:2026-03-01T08:45:14+00:00):

  @bors retry Spurious worker restart.

• Mention @bors squash in squashing documentation (rustc-dev-guide#2785, time:2026-03-01T08:15:58+00:00):

  I combined my new paragraph and the previous paragraph, and kept the new text at the top. Thanks for letting me know!

• Introduce --ci flag in tidy (rust#152949, time:2026-02-28T22:11:11+00:00):

  Thank you! @bors r+

• Mention @bors squash in squashing documentation (rustc-dev-guide#2785, time:2026-02-28T21:01:35+00:00):

  Yeah.

• Introduce --ci flag in tidy (rust#152949, time:2026-02-28T20:25:53+00:00):

  No need to clone TidyCtx, find_base_commit can just receive &TidyCtx by reference. After you change that, you can squash the commits using @bors squash, and r=me. Thank you! @bors delegate

• Mention @bors squash in squashing documentation (rustc-dev-guide#2785, time:2026-02-28T20:14:36+00:00):

  Lol, I did indeed. I think that we should mention it at the top of the section though, otherwise people will just start with the local operations (case in point, I didn't notice the @bors squash documentation is already in the same section that I modified :) ), which is the more annoying option a...

• Mention @bors squash in squashing documentation (rustc-dev-guide#2785, time:2026-02-28T20:06:43+00:00):

  By description, do you mean multi-line commit messages? Otherwise, this PR states how to override the commit message 😅

• Decision Process Implementation (triagebot#1680, time:2026-02-27T22:21:14+00:00):

  I'm not 100% sure what was the original goal here, but I guess that it would be superseded by https://rust-lang.zulipchat.com/#narrow/channel/242791-t-infra/topic/Moving.20rfcbot.20to.20triagebot/with/573590311?

• Optimize dependency file search (rust#153131, time:2026-02-26T12:45:37+00:00):

  Not expecting any big wins there, but let's check: @bors try @rust-timer queue

• Remove query function arrays (rust#153114, time:2026-02-26T06:38:59+00:00):

  Bootstrap numbers have been quite noisy in the past week for some reason, yeah :( So hard to say.

[Urgau]

Some preliminary feedback. We have some wording to figure out in Zulip.

View changes since this review

[Urgau]

We should think about using pulldown_cmark to purely extract the text, instead of doing those hacky stripping.

[Kobzol]

Yeah, good point. I'll do it later.

[rustbot]

This PR was rebased onto a different master commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

[Kobzol]

Found some bugs when testing this on a user account outside of the rust-lang organization. Let's get this out.