Closes #2920 add copilot instructions

[jeffreyad]

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[github-actions]

Package	Line Rate	Health
admiral	100%	✔
Summary	100% (6131 / 6144)	✔

[Copilot]

Copilot encountered an error and was unable to review this pull request. You can try again by re-requesting a review.

[bms63]

Wondering if we could have a demo of this and more discussion at next deep-dive meeting?

[jeffreyad]

The idea is that a GitHub action will periodically run a script that copies information from {admiraldev} Programming Strategy and Unit Test Guidance to AGENT.md files available for the coding agents. We can discuss in next deep-dive meeting.

[jeffreyad]

Will move this to {admiralci}

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

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💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The script correctly generates "See commit history for last update date" (lines 186, 277, 349), but the actual output files (AGENTS.md, tests/testthat/AGENTS.md, .github/copilot-instructions.md) contain hardcoded timestamps "2026-02-23 19:17:54". This indicates these files were not generated by running this script. The files should be regenerated using this script to ensure consistency.