first commit add master data kandang group

internal/database/migrations/20260308101515_create_table_kandang_groups.down.sql

@@ -0,0 +1,28 @@
+BEGIN;
+
+ALTER TABLE daily_checklists
+    DROP CONSTRAINT IF EXISTS fk_daily_checklists_kandang;
+
+UPDATE daily_checklists dc
+SET kandang_id = k.id
+FROM kandangs k
+WHERE
+    dc.kandang_id = k.kandang_group_id;
+
+ALTER TABLE daily_checklists
+    ADD CONSTRAINT fk_daily_checklists_kandang
+        FOREIGN KEY (kandang_id) REFERENCES kandangs (id) ON DELETE CASCADE;
+
+DROP INDEX IF EXISTS idx_kandangs_kandang_group_id;
+
+ALTER TABLE kandangs
+    DROP CONSTRAINT IF EXISTS fk_kandangs_kandang_group;
+
+ALTER TABLE kandangs
+    DROP COLUMN IF EXISTS kandang_group_id;
+
+DROP INDEX IF EXISTS kandang_groups_name_unique;
+
+DROP TABLE IF EXISTS kandang_groups;
+
+COMMIT;