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Command rig-changed prints the plugins a change touches, so CI builds and releases only those:

Command rig-index packs a release of the official plugins and writes registry/index.json: one archive per Go plugin and platform (its manifest; bin/rig-std is a shared file, one per platform), one per declarative plugin, each with its sha256 and, when RIG_SIGNING_KEY is set, a minisign signature.

Command rig-std is every official Go plugin in one binary: `rig-std <name>` serves one plugin over rig/1 on stdio, and `rig-std install` writes each plugin's manifest where rig finds it.