chore(master): release synapse-sdk 1.2.0

[FilOzzy]

📦 Release Preparation

1.2.0 (2026-08-25)

Features

• add batch piece deletion (#898) (61169d1)
• add support for Curios's confirmedTxHash (#912) (3b0af02)
• support custom client for reads (#909) (1b8b54e)

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🚀 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.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	synapse-dev	542da98	Commit Preview URL Branch Preview URL	Aug 25 2026, 02:53 PM

[FilOzzy]

🤖 Created releases:

• synapse-sdk-v1.2.0

🌻