Add MIT LICENSE file

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Problem

The README references an MIT license badge and links to a LICENSE file, but no license file exists in the repository.

Proposed solution

• Add a standard MIT LICENSE file at the repo root
• Ensure the copyright holder name/year match the project owner
• Verify the README badge and license section link correctly

Acceptance criteria

• LICENSE file exists at repo root
• License text matches MIT terms
• README license link resolves correctly

Context

Identified during repository review. PR #24 addressed CI and config templates; licensing remains open.