[Epic 8] Distribution — PyPI, Docker, AUR, Homebrew #9

Summary

Multi-channel release parity with CNA (npm→PyPI, Docker, AUR, Brew).

CNA mapping

publish.yml, publish-docker.yml, publish-aur.yml, notify-homebrew.yml, smoke-distribution.yml, docs/DISTRIBUTION_SETUP.md.

Why

Users install via uvx/pipx/docker/brew/AUR like CNA.

Sub-issues

• PyPI Trusted Publishing (OIDC) for create-awesome-python-app #58 PyPI Trusted Publishing (OIDC) for create-awesome-python-app
• Docker image publish workflow #59 Docker image publish workflow
• AUR publish tracking + workflow #60 AUR publish tracking + workflow
• Homebrew tap notify workflow #61 Homebrew tap notify workflow
• Distribution smoke tests (uvx / docker / brew) #62 Distribution smoke tests (uvx / docker / brew)
• docs/DISTRIBUTION_SETUP.md one-time secrets runbook #63 docs/DISTRIBUTION_SETUP.md one-time secrets runbook

Blocks / dependencies

none

Blocked by: #5 CLI package + #7 release skeleton

Reference

Parity matrix (workspace): knowledge/create-python-app-parity-matrix.md
Reference repo: https://github.com/Create-Node-App/create-node-app