v0.25.0

Added

• newb install <owner>/<repo> — single-repo CI bootstrap.
  Drops .github/workflows/newb.yml (PR by default, --push for
  direct-push) AND sets the NEWB_ANTHROPIC_API_KEY repo secret in
  one verb. Also exposed as separate verbs:
  newb scaffold-workflow and newb set-secret. All three accept a
  positional <owner>/<repo> or . (or omitted) for the current
  git remote. Idempotent — re-running skips already-set secrets and
  existing workflow files; --force overrides.
  • newb deliberately stays single-repo: it knows nothing about
    ecosystems or registries. Multi-repo loops are downstream
    concerns (a wrapping tool calls newb install per repo).
• docs/install.md — generic how-to for newb install.

Changed

• Generalized public-facing docs. Skill frontmatter tags
  (scitex-package → newb), removed "SciTeX-ecosystem"-specific
  prose from docs/badge.md, the skill leaves, and the runtime
  example. The newb package itself no longer mentions specific
  package names (scitex-io etc.) in user-facing text. The runner
  image URL (ghcr.io/ywatanabe1989/newb-runner) and the repo URL
  remain — those are real addresses.
• Runner image is now public on ghcr.io. Workflow templates
  drop the docker-login step; adopting repos need exactly one
  secret (NEWB_ANTHROPIC_API_KEY).
• newb-self-verify.yml — added a newb gate step
  (dogfoods the 0.24.0 declarative gate); dropped the
  GHCR_PAT login.

Removed

• docs/fleet-onboarding.md — replaced by docs/install.md.
  "Fleet" framing was scitex-specific scaffolding for what is, in
  newb, a single-repo operation.