Clean up ephemeral files before saving sbt/ivy2 cache

[Copilot]

ivydata-*.properties and *.lock files are regenerated on every build and should not be included in the cached archive — their presence causes spurious cache misses and unnecessary cache uploads on every run.

Changes

• src/save.ts: Before saving sbt-ivy2-cache, delete:
  • ~/.ivy2/cache/**/ivydata-*.properties — Ivy metadata files written on each resolution
  • ~/.sbt/**/*.lock — transient sbt lock files

The cleanup is implemented via a small deleteGlobMatches(pattern) helper (errors silently ignored) and a cleanupSbtIvy2Cache() function called in run() immediately before saveCache('sbt-ivy2-cache'):

async function cleanupSbtIvy2Cache(): Promise<void> {
  // Regenerated on every build — must not be part of the cached archive.
  await deleteGlobMatches('~/.ivy2/cache/**/ivydata-*.properties')
  await deleteGlobMatches('~/.sbt/**/*.lock')
}

Original prompt

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This section details on the original issue you should resolve

<issue_title>Avoid unnecessary cache updates</issue_title>
<issue_description>Currently in my workflows, I have the line below to remove various files which are not actually helpful to cache. It would be great if this could be integrated into the action directly to avoid unnecessary cache updates.

    rm -rf "$HOME/.ivy2/local" || true
    find $HOME/Library/Caches/Coursier/v1        -name "ivydata-*.properties" -delete || true
    find $HOME/.ivy2/cache                       -name "ivydata-*.properties" -delete || true
    find $HOME/.cache/coursier/v1                -name "ivydata-*.properties" -delete || true
    find $HOME/.sbt                              -name "*.lock"               -delete || true</issue_description>

<agent_instructions>Do this (clean-up some files) for ~/.ivy2/cache and ~/.sbt. If the tests do test one of these directories, look into checking that these files are not there after having unpacked the cache.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Avoid unnecessary cache updates #636

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[alexarchambault]

Delete the stuff under dist/

[alexarchambault]

Delete the stuff under dist/

[Copilot]

Delete the stuff under dist/

Done — reverted the dist/ changes in cec41ec. The dist/ files should be updated by CI, not committed in PRs.

Delete the stuff under dist/

Done — reverted the dist/ changes in cec41ec.