node-integration-tests: port trace semantics suites to span streaming

親 Issue のポーティング手順から始め、次に一覧にある tracing/* と public-api/* の suite、およびそれらの -streamed の対応物を確認します。指定された suite を span streaming に移植し、名前が挙げられた対応物を元に戻し、tracing/sampling-static と public-api/beforeSendSpan-static は static pin に残します。一覧にある integration suite が、span streaming 下での sampling、propagation、span linking、public API の動作をカバーすれば完了です。

Follow the porting recipe in the parent issue.

Sampling, DSC, envelope headers and span linking. These suites assert on envelope headers and trace propagation rather than on instrumentation output, so they are the ones most likely to expose a real product bug rather than a test rewrite.

Suites

• Envelope headers and DSC: tracing/envelope-header/* (7 dirs), tracing/dsc-txn-name-update, tracing/double-baggage/* (3 dirs), tracing/meta-tags, tracing/meta-tags-twp, tracing/meta-tags-twp-errors
• Sampling: tracing/sampling-static, tracing/sample-rate-propagation/* (4 dirs), tracing/sample-rand-propagation, tracing/no-parent-span-client-report
• Trace lifetime: tracing/continueTrace, tracing/startNewTrace, tracing/traceid-recycling, tracing/traceid-recycling-with-spans
• Span shaping: tracing/linking, tracing/maxSpans, tracing/tracer-start-active-span-error
• Public API span surface: public-api/startSpan/* (7 dirs), public-api/beforeSendSpan-static, public-api/bindScopeToEmitter, public-api/setMeasurement, public-api/scopes/*

Twins to fold back

tracing/sampling-streamed, tracing/ignoreSpans-streamed/*, public-api/beforeSendSpan-streamed, context-streamed/*, and the 6 public-api/startSpan/*-streamed dirs.

Keep static trace lifecycle coverage

This is the group that owns the guard. Keep tracing/sampling-static and public-api/beforeSendSpan-static on the static pin. Everything else moves.