feat: implement OTEL mcp.server.* metrics#2394

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verdie-g wants to merge 7 commits intomodelcontextprotocol:mainfrom

verdie-g:otel-metrics

Commits on Apr 5, 2026

feat: implement mcp.server.operation.duration and mcp.server.session.duration metrics

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mistral-vibe
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fix: ruff import order and line length in session.py

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test: add integration tests for operation and session error metrics

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fix: remove stale pragma: no cover from raise_exceptions path

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fix: relax sum > 0 to sum >= 0 for Windows timer resolution

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fix: bump opentelemetry-api minimum to >=1.30.0

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fix: bump logfire>=3.20.0, use metrics_reader API, fix pyright errors

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mistral-vibe
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