chore(master): release synapse-core 0.2.1

[github-actions]

📦 Release Preparation

0.2.1 (2026-02-23)

Features

• new core piece url retriever (#617) (d1e7018)

Bug Fixes

• metadata: validate metadata values are strings before length check (#615) (be6133f)
• pay: require explicit allowances when approving custom operators (#616) (b5820c9)

Chores

• biome 2.4.4 (#626) (061d5b1)
• update biome (#609) (fe2b365)
• update msw package version to 2.12.10 in workspace and mock service worker files (#610) (c046b7a)

---

🚀 How to Release

1. Review the changelog and version bump in this PR
2. Merge this PR to trigger the release
3. After merging, the workflow will:
   • Create a GitHub release with tag ${version}
   • Publish to npm automatically
4. Wait until the workflow is complete before merging another release PR

⚠️ Note: The release has NOT been created yet. It will only be created after you merge this PR.

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Workers

The latest updates on your project. Learn more about integrating Git with Workers.

Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	synapse-dev	e9d8083	Commit Preview URL Branch Preview URL	Feb 23 2026, 10:21 PM