Extract reusable OSS implementation patterns

[enricopiovesan]

Summary

Capture concrete adopt, adapt, and reject guidance from the local OSS reference repos for Traverse.

Governing Spec

• 001-foundation-v0-1
• 004-spec-alignment-gate

Project Item

• #108

What Changed

• Contracts changed: none.
• Runtime behavior changed: none.
• Compatibility impact: none; this is architecture and implementation guidance only.
• ADR needed or linked: none.

Validation

• Spec alignment checked
• Contract alignment checked
• Tests updated and passing
• Core coverage preserved
• Required validation gates passing

Validation commands:

• verify the reference repos exist under references/open-source/
• verify the extraction note is present in docs/oss-pattern-extraction.md
• bash scripts/ci/repository_checks.sh

Notes

Creates concrete follow-up guidance from Spin, Dapr, Flogo Core, and the polyglot microservices reference without changing runtime code.