* Updated ThreadX contribution guide for current workflows
The existing guide left contributors without current build, test, and
submission guidance.
The guide now covers the shared project process and ThreadX-specific C99,
port, simulator, CI, attribution, and release practices.
Documentation links resolve and git diff --check passed. Build tests were
not run for this documentation change.
Assisted-by: Codex (gpt-6-sol) <noreply@openai.com>
* Added visible spacing between contributor setup steps
The ECA and Git setup items had no visible gap in GitHub Markdown.
An indented line break now separates them while preserving list numbering.
GitHub Markdown rendered the items in one list with the visible gap, and
git diff --check passed.
Assisted-by: Codex (gpt-6-sol) <noreply@openai.com>