feat(BE-#270): Project flock period change to project_flock_kandangs

internal/database/migrations/20251117092514_adjustment_projectflock_period.down.sql

@@ -0,0 +1,16 @@
+BEGIN;
+
+ALTER TABLE project_flock_kandangs
+    DROP COLUMN IF EXISTS period;
+
+ALTER TABLE project_flocks
+    ADD COLUMN IF NOT EXISTS period INT NOT NULL DEFAULT 0;
+
+CREATE UNIQUE INDEX IF NOT EXISTS project_flocks_base_period_unique
+    ON project_flocks (
+        LOWER(TRIM(regexp_replace(flock_name, '\\s+\\d+(\\s+\\d+)*$', '', 'g'))),
+        period
+    )
+    WHERE deleted_at IS NULL;
+
+COMMIT;