Deepen eval2otel contract and adapter coverage

[haasonsaas]

Summary

• Add adversarial conformance fixtures, semconv registry helpers, deeper RAG derived metrics, and Promptfoo conversion.
• Add a provider adapter boundary with structured warning/evidence results plus a contract-first Python SDK scaffold.
• Refresh dependency/security hygiene, E2E harness pins, package contents, and rewrite the README/docs around the current operator path.

Issue coverage

• Closes Add adversarial safety fixtures for eval2otel (library convert evaluation results opentelemetry) #33
• Closes Research: Align with OpenLLMetry GenAI semantic conventions #30
• Closes feat: Add RAG-specific metrics and tracking #3
• Refs feat: Integrate evaluation frameworks (RAGAS, DeepEval, Promptfoo) #4 for the Promptfoo adapter slice
• Refs feat: Create Python SDK with auto-instrumentation #2 for the Python contract scaffold
• Supersedes the security intent of Dependabot chore(deps): bump @protobufjs/utf8 from 1.1.0 to 1.1.1 in /test-harness #37 and chore(deps): bump protobufjs from 7.5.3 to 7.6.0 in /test-harness #39 by updating the harness/root dependency path

Test Plan

• npm run lint
• npm run build
• npx tsc --noEmit
• npm test -- --coverage
• npm audit --omit=dev
• (cd test-harness && npm ci && npm audit --omit=dev)
• PYTHONPATH=python python3 -m unittest discover -s python/tests
• npm pack --dry-run
• CI=true OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf bash test-harness/run-tests.sh

[socket-security]

Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​axios@​1.11.0 ⏵ 1.16.1	-12	+61
	npm/​@​opentelemetry/​api@​1.7.0 ⏵ 1.9.1	+1
	npm/​@​opentelemetry/​semantic-conventions@​1.28.0 ⏵ 1.41.1
	pypi/​hatchling@​1.29.0
	npm/​@​opentelemetry/​sdk-node@​0.45.1 ⏵ 0.218.0	-1	+16	+1	+1
	npm/​@​opentelemetry/​auto-instrumentations-node@​0.40.3 ⏵ 0.76.0	+4	+16	+1	+3

View full report

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
src	96%	83%	0	✔
src.integrations	96%	80%	0	✔
Summary	96% (1018 / 1062)	83% (773 / 933)	0	✔