Without Codacy's `Remark-lint` triggering `[no-undefined-references]` `[no-shortcut-reference-link]` notices, how to use Markdown footnotes?

Question

Found https://github.com/remarkjs/remark-lint/issues/234, which just says that for local installs of Remark-lint you can update .remarkrc to allow use of Pandoc syntax ([^<number>]) footnotes.

But the problem is with hosted Remark-lint (through cloud tools, such as GitHub's Codacy scan tool, which does not offer .remarkrc for you, just .github/workflows/codacy.yml).

Or is there some other form of footnotes which Remark-lint allows (just not Pandoc footnotes)?

List of Remark-lint errors is at https://github.com/SwuduSusuwu/SubStack/runs/34401539110, the exact commit which triggered this is https://github.com/SwuduSusuwu/SubStack/commit/188d87fdc2b1496238f4e792a003cb328c3f423f

https://github.com/remarkjs/remark-lint/issues/234 says that Pandoc block footnotes should not trigger no-undefined-references, so perhaps over the last 4 years this has regressed (got worse)?

https://github.blog/changelog/2021-09-30-footnotes-now-supported-in-markdown-fields/ just shows the Pandoc[^1] syntax for footnotes (which Remark-lint's default rules flag). Is there some other syntax (which does not trigger those notices from Remark-lint?)

[^1]:

This is an example which ends with a _Pandoc_ reference to a footnote. [^2]

[^2]: This is the _Pandoc_ footnote.

example Remark-lint notices:

Annotations

Check notice on line 1 in Markdown.md

Code scanning / Remark-lint (reported by Codacy)

Warn when references to undefined definitions are found.

Note
[no-undefined-references] Found reference to undefined definition
Show more details

Check notice on line 1 in Markdown.md

Code scanning / Remark-lint (reported by Codacy)

Warn when shortcut reference links are used.

Note
[no-shortcut-reference-link] Use the trailing [] on reference links
Show more details

(if you click "Show more details" it shows the lines from your Markdown which have footnotes).