chore(master): release 0.9.0

[github-actions]

📦 Release Preparation

0.9.0 (2025-10-14)

Features

• add support for warm storage (env var only) and provider selection (#102) (7f8eca9)

Bug Fixes

• upgrade to latest synapse-sdk (#115) (c99e370)

Chores

• deps-dev: bump @biomejs/biome from 2.2.5 to 2.2.6 (#112) (e8c4ce5)

---

🚀 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

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

[github-actions]

🤖 Created releases:

• v0.9.0

🌻