chore: release v1.9.1

[reearth-app]

Release v1.9.1

This PR was automatically created by the release workflow.

Changelog

[1.9.1] - 2026-05-28

Changes

• fix: dispose handles of value-marshalled built-ins nested in another value
• fix: dispose unowned marshal handles (json copies, BigInt) instead of leaking

Pre-merge Checklist

• Review version bump is correct
• Review changelog entries
• All tests passing
• Build successful

Post-merge Steps

After merging this PR:

1. The Tag release workflow pushes the v1.9.1 tag automatically, which triggers Publish.
2. Approve the npm-publish environment on the resulting Publish workflow run to publish to npm with provenance

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	97.48%	699 / 717
🔵	Statements	93.42%	781 / 836
🔵	Functions	95.13%	176 / 185
🔵	Branches	84.45%	489 / 579

File Coverage

No changed files found.

Generated in workflow #530 for commit 531c567 by the Vitest Coverage Report Action