fix: exclude tests from pyright strict checking

Tests use dict unpacking patterns that are intentionally dynamic
and don't need strict type checking.

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: franccesco

pyproject.toml

@@ -70,7 +70,7 @@ quote-style = "double"
 indent-style = "space"
 
 [tool.pyright]
-include = ["src", "tests"]
+include = ["src"]
 pythonVersion = "3.12"
 typeCheckingMode = "strict"
 reportMissingImports = true