oss-signal v0.9.9

oss-signal v0.9.9 removes the main setup hurdle for a first maintainer trial.

What Changed

• npx oss-signal --init creates a report-only workflow in the current repository.
• The generated workflow runs manually or on pull requests, uploads the Markdown
  report and adoption pack, and does not add a score gate.
• Existing workflow files are never replaced unless --force is explicitly used.
• CLI output now creates missing parent directories.

Try It

npm exec --yes --package=oss-signal@0.9.9 -- oss-signal --init

Review .github/workflows/oss-signal-trial.yml, commit it, and run the workflow
manually. No star, endorsement, or adoption claim is requested.