gitlink-cli/doc/changes/pr-create-fork-support.md

PR Create Fork Support

Summary

This change makes gitlink-cli pr +create work with the fork syntax already documented in the README:

gitlink-cli pr +create --owner Gitlink --repo forgeplus \
  -t "feat: New feature" \
  --head your_username/forgeplus:feature/my-feature \
  --base master

What changed

• Parse owner/repo:branch fork heads in pr +create
• Auto-resolve the fork repository metadata required by GitLink:
  • merge_user_login
  • merge_project_identifier
  • fork_project_id
• Auto-fill compare counts when available so the request matches GitLink's real PR create flow more closely
• Keep same-repo PR creation behavior unchanged

Validation

• go test ./...
• Unit tests for:
  • same-repo PR creation payload
  • fork PR creation payload
  • invalid fork head syntax