Conditions

• conditions:
• @if static for expression/item-level gating
• Generalised to Modules with "conditions"
• x.ds, x.test.ds, x.whatever.ds
• gate on import.meta

1{2    "conditions": {3        "modes": {},4        "roles": {},5        "features": {},6        "tags": {},7        "aliases": {}8    }9}