@hackage/hs-opentelemetry-propagator-w3c

propagatorNames renamed to propagatorFields and now returns actual header names (traceparent, tracestate) instead of tracecontext, conforming to the spec Fields requirement
Fix multi-header tracestate inbound: all tracestate headers are now combined per RFC 7230 before parsing (previously only the first was used)
Fix: reject traceparent with all-zero trace-id or parent-id (W3C spec requires these to be non-zero)

Complete W3C tracestate header parsing and encoding support
tracestateParser for parsing W3C tracestate headers according to specification
encodeTraceState function for serializing TraceState to W3C format
encodeTraceStateFull for serializing complete TraceState without HTTP header limits
encodeTraceStateMultiple for splitting TraceState into multiple headers with size constraints
decodeTraceStateMultiple for combining multiple tracestate headers per RFC7230
Proper validation of tracestate keys and values per W3C spec
Support for up to 32 tracestate entries as per specification
Multi-tenant key format support (tenant@vendor)
Automatic removal of oversized entries (>128 chars) as per W3C truncation guidance
RFC7230-compliant header field combining with comma separation
Comprehensive test coverage for tracestate functionality