[kasettadoo-sys]

Closes #222.

What

Three help lines were behind the code, and inspect accepted any --format.

--help

Line	Before	After
--config	onsystem.config.{json,ts,mjs,js}	onsystem.config.{json,ts,mts,js,mjs}
--tokens	Token file (DTCG .json or CSS)	Token file (DTCG .json, CSS or DESIGN.md)
--format	check: and export: only	inspect: pretty | json (default: pretty) added

All three were already right in docs/cli.md; --help was the one lagging.

inspect --format

inspect only looked for json, so --format xml (or a typo) printed the pretty output and exited 0, where check and export exit 2. A script that asked for JSON and got text read it as a design system with nothing in it. It now exits 2 with one line in check's style:

$ onsystem inspect --format xml
inspect: unknown --format "xml" (pretty, json)

The check sits at the top of inspect(), before loadTarget, as the issue's hint suggests, so the monorepo root that inspectWorkspace handles is covered by the same four lines.

Tests

• test/cli.test.ts: --help names every extension in CONFIG_FILES (compared as a set, parsed out of the brace list, so js cannot pass by being a substring of json); the usage-error test covers inspect --format xml; and a new case asserts exit 2, the one-line message and empty stdout both in a project and at a monorepo root (pnpm-workspace.yaml + appIn). Reverted against the fix, all three fail.
• test/cli-docs.test.ts: --format's commands are now check, inspect, export. With inspect named in --help, BEYOND_HELP — the escape hatch for an option --help does not name for a command — had no entries left, so it and the assertion it skipped are gone; that assertion now runs for the inspect --format row. The test that runs inspect --format json keeps doing so, under a title that no longer says --help omits it.

Docs

docs/cli.md needed one row: inspect's --format now names pretty as the default alongside json and says another value exits 2, since that behaviour is new. docs/configuration.md is untouched, as the issue asks.

Checks

pnpm lint, pnpm format:check, pnpm typecheck, pnpm build, pnpm smoke and pnpm test (1428 passed, 3 skipped) all pass locally. pnpm build left schema.json unchanged. Patch changeset included.