[Pepps233]

Summary

Update license to MIT.

Reasoning

Align the package and distribution declarations.

Changes

• Update 13 workspace license declarations and regenerate the root lockfile, CLI shrinkwrap, and installation lock.
• Update distribution notice generation, bundled component metadata, packaged README text, and archive validation to use MIT.
• Update the runtime image license label and release documentation.
• Correct stale Apache declarations in README license sections and the root badge, and simplify the root benchmark summary wording.
• Verify MIT metadata and notices in actual npm tarballs, including bundled Diffex components, and reject stale Apache package metadata.

Testing

• npm run check passed.
• node --test scripts/prepare-distribution.test.mjs scripts/distribution-payload.test.mjs passed all 40 tests, including actual npm packing and archive inspection.
• git diff --check passed.