17-task TDD plan for rewriting the installer to fetch binaries from
releases/ClaudeDo on git.kuns.dev. Covers InstallManifest, ReleaseClient,
InstallModeDetector, DownloadAndExtractStep, Config/Repair/Uninstall,
and the publish-time single-file self-contained settings.
Workflow file is out of scope (handled by VPS Claude).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
