Skip overlay memory check for CodeQL 2.24.3 and later

[henrymercer]

RAM usage with overlay analysis enabled should generally be no higher than it is without overlay analysis for these versions.

Risk assessment

For internal use only. Please select the risk level of this change:

• Low risk: Changes are fully under feature flags, or have been fully tested and validated in pre-production environments and are highly observable, or are documentation or test only.

Which use cases does this change impact?

Workflow types:

• Advanced setup - Impacts users who have custom CodeQL workflows.
• Managed - Impacts users with dynamic workflows (Default Setup, Code Quality, ...).

Products:

• Code Scanning - The changes impact analyses when analysis-kinds: code-scanning.

Environments:

• Dotcom - Impacts CodeQL workflows on github.com and/or GitHub Enterprise Cloud with Data Residency.

How did/will you validate this change?

These changes will be validated as part of the next release process.

If something goes wrong after this change is released, what are the mitigation and rollback strategies?

Disable via broader overlay feature flags, or CodeQL version feature flags.

• Feature flags - All new or changed code paths can be fully disabled with corresponding feature flags.

How will you know if something goes wrong after this change is released?

• Telemetry - I rely on existing telemetry or have made changes to the telemetry.
  • Alerts - New or existing monitors will trip if something goes wrong with this change.

Are there any special considerations for merging or releasing this change?

• No special considerations - This change can be merged at any time.

Merge / deployment checklist

• Confirm this change is backwards compatible with existing workflows.
• Consider adding a changelog entry for this change.
• Confirm the readme and docs have been updated if necessary.

[Copilot]

Pull request overview

Updates overlay analysis resource checking so that the minimum-memory gating is skipped for CodeQL CLI versions where overlay no longer increases peak RAM usage (2.24.3+).

Changes:

• Introduce a CodeQL version threshold (2.24.3) after which overlay’s minimum-memory check is skipped.
• Refactor overlay resource checks into separate disk-space and memory helpers, with additional debug logging.
• Add regression tests asserting overlay remains enabled on low-memory settings when CodeQL >= 2.24.3.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/config-utils.ts	Skips overlay minimum-memory check for CodeQL >= 2.24.3 and refactors disk/memory resource checks.
src/config-utils.test.ts	Adds test cases for the new version-gated memory-check behavior on default branch and PR runs.
lib/init-action.js	Generated JS update corresponding to the TypeScript changes (not reviewed).