Extension Author Command

Use jue inspect --extension <id> --diagnostics for queries. The author namespace keeps only pre-publish validation:

jue extension validate <path-or-package> [--load] [--fixtures <dir>]

By default it checks npm package.json, exports, and peerDependencies without executing code. --load uses an isolated context to validate Adapter IDs, interfaces, and import-time zero side effects. --fixtures <dir> runs adapter.read() against each direct subdirectory and checks CanonicalDocumentSchema; any failing fixture exits with code 2. Package managers install, upgrade, and remove Extensions.