scaffold-composable

Generate Pinia-Colada composables for a backend API resource. Creates query and mutation composables following the established defineQuery/defineMutation patterns with SDK integration. Use when user says 'create a composable', 'scaffold composable', 'add query composable', 'generate useQuery hook', 'create mutation composable', 'Pinia-Colada setup', or 'add API composable for resource'. Do NOT use for full pages…