Import otel Cloudflare Workers package

[petyosi]

Summary

• import @pydantic/otel-cf-workers into the monorepo as an ESM-only package with preserved BSD licensing and vendored provenance
• wire @pydantic/logfire-cf-workers to the workspace implementation package and publish it as ESM-only
• unify OpenTelemetry catalog dependencies, bump @vercel/otel, and remove the suspicious @opentelemetry/api-logs duplicate
• update Cloudflare docs, package READMEs, AGENTS guidance, release changeset, PRP, and old-repo archive README draft

Validation

• vp check
• vp run @pydantic/otel-cf-workers#build
• vp run @pydantic/otel-cf-workers#typecheck
• vp run @pydantic/otel-cf-workers#lint
• vp run @pydantic/otel-cf-workers#test
• vp run @pydantic/logfire-cf-workers#build
• vp run @pydantic/logfire-cf-workers#typecheck
• vp run @pydantic/logfire-cf-workers#lint
• vp run @pydantic/logfire-cf-workers#test
• vp run --filter "./packages/*" build
• vp run --filter "./packages/*" typecheck
• vp run --filter "./packages/*" test
• pre-push package build/test hook during git push

Notes

The remaining non-OTel duplicate transitive packages come from incompatible upstream major lines
(mostly Express 4, Changesets internals, and tooling/type packages), so this PR leaves them alone
rather than forcing risky overrides.

[devin-ai-integration]

Devin Review found 5 potential issues.

[devin-ai-integration]

Devin Review found 4 new potential issues.

[devin-ai-integration]

Devin Review found 1 new potential issue.