Add runtime resource attributes, span status/kind, and fix ODR singletons#13

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proffalken wants to merge 6 commits intomainfrom

feat/runtime-resource-attrs-and-span-status

Commits on Feb 10, 2026

Address review feedback from CodeRabbit and Copilot

proffalken
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claude
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Keep addResAttr() as deprecated wrapper for backwards compatibility

proffalken
and
claude
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