Point XKB_CONFIG_ROOT at xkeyboard-config so the binary works on NixOS,
and rename icons/desktop Icon to zed-preview so nix profile can install
alongside zed-editor-fhs.

Package the multi-platform static CLI (linux amd64/arm64, darwin arm64)
with a url-manifest-binary updater type that tracks version manifests.

Package the Zed preview channel from GitHub release tarballs, expose it on
x86_64-linux only, and teach the weekly updater about github-release-binary.

chore(packages): weekly upstream version bumps

Package the agent-native identity CLI for rook.host as buildNpmPackage,
with automated npm-github updates via upstream.json.

Automated update from scripts/update-packages.sh

Package matz/spinel (Ruby AOT compiler) as a Nix flake attr, vendor
prism/rbs gems for pure builds, and extend the updater for untagged
master tips so weekly CI can bump the pin.

Introduce scripts/update-packages.sh driven by packages/*/upstream.json,
plus a Monday cron (and workflow_dispatch) that refreshes hashes/lockfiles,
verifies nix builds, and opens a PR when anything changed.

Add a flake for third-party tools without upstream Nix support.
vit is built with buildNpmPackage from the GitHub v0.6.1 tag; a
regenerated package-lock.json is vendored because upstream's lock
lacks resolved URLs (breaks offline npmDeps caching).