Version packages: 0.15.0

[aaltshuler]

Summary

• Bump all five public Orbit packages from 0.14.0 to 0.15.0 in the configured fixed group.
• Add the generated 0.15.0 changelog entries and internal dependency updates.
• Update the README npm status to 0.15.0.

Merging this PR is the repository's publish trigger. The Release workflow will rebuild and pack-smoke the packages, publish each package under latest, and create package-scoped tags and GitHub releases.

Registry preflight

• npm latest: 0.14.0 for all five packages
• 0.15.0: not currently published for any package
• package access: public

Validation

• pnpm check
• pnpm run build
• pnpm run demo:build including workspace worker-asset smoke
• pnpm run smoke including published-package import/type/tree-shaking and self-contained worker checks
• git diff --check

Greptile Summary

Version-release PR that advances all five public Orbit packages from 0.14.0 to 0.15.0.

• Updates each package manifest to the fixed-group version.
• Adds matching changelog entries and internal dependency release notes.
• Updates the README npm status.

Confidence Score: 5/5

The release metadata appears safe to merge, with package versions and changelog dependency entries aligned across the fixed group.

The changes are limited to consistent 0.15.0 package-version updates, generated changelog entries, and the corresponding README status update, with no concrete blocking failure identified.

Important Files Changed

Filename	Overview
packages/core/package.json	Updates the core package version to 0.15.0 consistently with the fixed release group.
packages/data/package.json	Updates the data package version to 0.15.0; its workspace dependency remains suitable for publish-time rewriting.
packages/engine-cosmos/package.json	Updates the Cosmos engine package version to 0.15.0 consistently with the release.
packages/omnigraph/package.json	Updates the Omnigraph package version to 0.15.0 consistently with the release.
packages/react/package.json	Updates the React package version to 0.15.0 consistently with the release.
README.md	Advances the documented npm status to the version published when this release PR merges.
packages/core/CHANGELOG.md	Adds the shared 0.15.0 minor-release description.
packages/data/CHANGELOG.md	Adds the 0.15.0 release description and matching core dependency update.
packages/engine-cosmos/CHANGELOG.md	Adds the 0.15.0 release description and matching core dependency update.
packages/omnigraph/CHANGELOG.md	Adds the 0.15.0 release description and matching core dependency update.
packages/react/CHANGELOG.md	Adds the 0.15.0 release description and matching core dependency update.

_{Reviews (1): Last reviewed commit: "Version packages: 0.15.0 lockstep" | Re-trigger Greptile}