98550f5e66
- README.md: add Homebrew quick start (brew install kdlbs/kandev/kandev), update NPX docs to require npm 7+, document the three update paths. - docs/cli.md: rewrite architecture diagram to show three-step runtime resolution. Replace --version <tag> docs with --version (CLI semver) + --runtime-version <tag> (advanced/debug). Remove KANDEV_NO_UPDATE_PROMPT. - apps/cli/README.md: add Homebrew install path; document package-manager-owned updates. - apps/cli/README_internal.md: rewrite to describe the npm package vs GitHub bundle artifact-shape distinction and the three-step resolver. Document the GHA-driven release UI (Run workflow + bump dropdown). - AGENTS.md: add Release & Versioning Convention section describing the unified single-SemVer flow, the sibling channel model, and the GHA flow.