dev: initiate adjustment recording and trf to laying

internal/database/migrations/20260227130000_add_deferred_execution_to_laying_transfers.down.sql

@@ -0,0 +1,11 @@
+DROP INDEX IF EXISTS idx_laying_transfers_executed_by;
+DROP INDEX IF EXISTS idx_laying_transfers_executed_at;
+DROP INDEX IF EXISTS idx_laying_transfers_effective_move_date;
+
+ALTER TABLE laying_transfers
+    DROP CONSTRAINT IF EXISTS fk_laying_transfers_executed_by;
+
+ALTER TABLE laying_transfers
+    DROP COLUMN IF EXISTS executed_by,
+    DROP COLUMN IF EXISTS executed_at,
+    DROP COLUMN IF EXISTS effective_move_date;

internal/database/migrations/20260227130000_add_deferred_execution_to_laying_transfers.up.sql

@@ -0,0 +1,46 @@
+ALTER TABLE laying_transfers
+    ADD COLUMN IF NOT EXISTS effective_move_date DATE,
+    ADD COLUMN IF NOT EXISTS executed_at TIMESTAMPTZ,
+    ADD COLUMN IF NOT EXISTS executed_by BIGINT;
+
+DO $$
+BEGIN
+    IF EXISTS (SELECT 1 FROM pg_tables WHERE tablename = 'users')
+        AND NOT EXISTS (
+            SELECT 1
+            FROM pg_constraint
+            WHERE conname = 'fk_laying_transfers_executed_by'
+        ) THEN
+        ALTER TABLE laying_transfers
+            ADD CONSTRAINT fk_laying_transfers_executed_by
+            FOREIGN KEY (executed_by)
+            REFERENCES users(id)
+            ON DELETE SET NULL
+            ON UPDATE CASCADE;
+    END IF;
+END $$;
+
+CREATE INDEX IF NOT EXISTS idx_laying_transfers_effective_move_date
+    ON laying_transfers(effective_move_date);
+
+CREATE INDEX IF NOT EXISTS idx_laying_transfers_executed_at
+    ON laying_transfers(executed_at);
+
+CREATE INDEX IF NOT EXISTS idx_laying_transfers_executed_by
+    ON laying_transfers(executed_by);
+
+-- Backfill historical approved transfers. Before deferred execution,
+-- approved transfers were executed immediately during approval.
+UPDATE laying_transfers lt
+SET
+    effective_move_date = COALESCE(lt.effective_move_date, lt.transfer_date),
+    executed_at = COALESCE(lt.executed_at, lt.updated_at),
+    executed_by = COALESCE(lt.executed_by, lt.created_by)
+WHERE (
+    SELECT a.action
+    FROM approvals a
+    WHERE a.approvable_type = 'TRANSFER_TO_LAYINGS'
+      AND a.approvable_id = lt.id
+    ORDER BY a.id DESC
+    LIMIT 1
+) = 'APPROVED';