[umiyosh]

Summary

From 1.0.0 motion-render does not need Claude Motion, but the READMEs still carried notes written when it did. This removes them, in English and Japanese.

• The note under the introduction. It said Claude Motion is a Team and Enterprise beta and pointed to the comparison of the two ways. It was added when motion-render needed Motion. The plan requirement it also carried (not the free plan) is already in Requirements.
• The Claude Code row of Requirements. The sentence about Motion being used on Team and Enterprise is not a requirement. The row now says only which plans work.

Kept on purpose: "Two ways to make the animation" and the Troubleshooting row about Motion pages using OS fonts. Both describe what happens when Motion is used, which is still the case on Team and Enterprise.

The v1.0.0 tag and its draft release were deleted. They are recreated on the merge commit of this PR.

Test plan

• npx prettier --check README.md README.ja.md
• Read both READMEs on GitHub after merge