chore: release main

[github-actions]

🤖 I have created a release beep boop

0.21.0

0.21.0 (2026-06-23)

Features

• add Streamable HTTP transport for MCP server (404fbb2)

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This PR was generated with Release Please. See documentation.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.21%. Comparing base (404fbb2) to head (e2d9c04).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #28   +/-   ##
=======================================
  Coverage   85.21%   85.21%           
=======================================
  Files          81       81           
  Lines       16724    16724           
  Branches     2060     2060           
=======================================
  Hits        14252    14252           
  Misses       2404     2404           
  Partials       68       68           

Flag	Coverage Δ
otto-cli	89.95% <ø> (ø)
otto-extension	83.05% <ø> (ø)
otto-relay	97.25% <ø> (ø)
otto-sdk	70.66% <ø> (ø)

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