first commit

backend/database/migrations/012_add_cage_uuid_to_kandangs.sql

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+-- Migration 012: Add cage_uuid to kandangs table
+-- Add cage_uuid field for external scales API integration
+
+-- Add cage_uuid column (nullable, unique)
+ALTER TABLE kandangs
+ADD COLUMN IF NOT EXISTS cage_uuid VARCHAR(36) UNIQUE;
+
+-- Add comment explaining the field
+COMMENT ON COLUMN kandangs.cage_uuid IS 'External cage UUID for scales API (dashboard.cpsp.id/api/scales/cage/)';
+
+-- Seed initial data for existing kandangs
+-- Kandang Atas gets the existing hardcoded UUID
+UPDATE kandangs
+SET cage_uuid = '9f556d2a-af5c-41b0-bcd0-6cea0dfa0fed'
+WHERE LOWER(name) LIKE '%atas%';
+
+-- Kandang Bawah and others remain null (to be configured via settings UI)
+-- This is intentional - admins will configure via IoT Panel settings