Hugh KaznowskiandClaude Sonnet 5
b3e0272544
RegexToMetricPrimitiveMatcher and the standalone param declaration (DeclareParamRequest/DataValue::ParamDeclaration) gain an optional json_field_path, an alternative to capture_group that reads a dot-separated field path (e.g. "foo.bar") out of lines that parse as JSON objects. It's additive and serde-defaulted, so existing regex-based params/metrics are unaffected. Params.tsx now offers a "JSON field" extraction option when the message match regex looks like a JSON object. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XFUNZwCvz3kcod3352ZR2o