start-sdk v2.0.2

What's Changed

Changed

• s9pk.mk checks build tools before packing, not just before install. The check-deps target now runs as an order-only prerequisite of the build targets, so a missing start-cli, npm, git, or jq fails fast with a clear message instead of surfacing partway through a build. git is required because s9pk pack embeds the repository's commit hash (git rev-parse HEAD) in the manifest; jq is required because the post-build summary reads the manifest with it (without it the summary would print blank fields). The "not found" messages now link to the current setup guide (https://docs.start9.com/packaging/environment-setup.html) instead of a dead pre-reorg URL.