Skip phpstan config & agent files when building

[agibson-godaddy]

Summary

This updates the copy task to skip copying over ethe following file types:

• phpstan.neon config file
• CLAUDE.md file
• .agents/ directory

QA

1. Use this branch of sake
2. Run sake build
   • Above mentioned file types are excluded

[Copilot]

Pull request overview

Updates the build copy task so non-runtime configuration/agent artifacts aren’t included in the build output produced by sake build, keeping distributions cleaner and avoiding accidental shipping of tooling/AI metadata.

Changes:

• Exclude phpstan.neon from the build copy globs.
• Exclude CLAUDE.md from the build copy globs.
• Exclude the .agents/ directory (including contents) from the build copy globs.

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[agibson-godaddy]

I removed phpstan.neon from the "do not copy" list.

WooCommerce's QIT tests can read this file to customize their PHPStan test. bc7e71a

[agibson-godaddy]

I removed phpstan.neon from the "do not copy" list.

WooCommerce's QIT tests can read this file to customize their PHPStan test. bc7e71a

Reverted this. Long story short is that we won't be relying on the QIT PHPStan test.