oss-signal v0.9.4

oss-signal v0.9.4 expands the machine-readable output contract.

What Changed

• Added docs/schema/inventory-output.schema.json for --inventory --format json.
• Added docs/schema/rules-catalog.schema.json for --list-rules --format json.
• Added docs/examples/inventory-report.json as a committed inventory fixture.
• Added tests that parse the published schemas and JSON fixtures.

Verification

• npm run check
• npm publish --dry-run
• clean install smoke for oss-signal@0.9.4