fix: collapse single-error ExceptionGroups from task group cancellations#2183

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giulio-leone wants to merge 6 commits intomodelcontextprotocol:mainfrom

giulio-leone:fix/exception-group-unwrapping

Commits on Feb 28, 2026

fix: collapse single-error ExceptionGroups from task group cancellations

g97iulio1609
and
Copilot
committed
fix: add BaseExceptionGroup compat import for Python 3.10 + ruff format
g97iulio1609
committed
fix: add BaseExceptionGroup compat import to session.py + sort test imports
g97iulio1609
committed
fix: remove unused anyio import, add pragma:no-branch for 3.10 compat, add multi-failure test
g97iulio1609
committed
fix: use pragma:no-cover for version-conditional imports to satisfy 100% coverage

g97iulio1609
and
Copilot
committed
fix: use pragma:lax-no-cover for version-conditional imports (bypasses strict-no-cover)
g97iulio1609
committed