fix: restore original opencode copyright notice in LICENSE

[rkuemon]

The MIT license is short and should be easy to understand. There is one requirement you are legally not allowed to violate and that is removing the copyright notice from the LICENSE file, as it was done in 13ed01b.

[github-actions]

Hey! Your PR title Add safeguard against lawsuit from OpenCode creators doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, kilo).

See CONTRIBUTING.md for details.

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.