add migration for drift stock logs

internal/database/migrations/20260528123243_fix_stock_log_drift_jamali_merge.down.sql

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+BEGIN;
+
+-- ============================================================
+-- Rollback stock_log drift fix: DELETE corrective rows yang di-insert UP.
+-- IDs ditarik dari audit table `migration_audit.jamali_w10_stocklog_corrections`.
+-- Setelah delete, `last_stock_log.stock` kembali ke nilai pre-fix (drift muncul lagi).
+-- ============================================================
+
+-- Guard: audit table harus ada
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM information_schema.tables
+    WHERE table_schema = 'migration_audit'
+      AND table_name = 'jamali_w10_stocklog_corrections'
+  ) THEN
+    RAISE EXCEPTION
+      'Audit table migration_audit.jamali_w10_stocklog_corrections tidak ditemukan. UP belum dijalankan atau audit sudah di-drop.';
+  END IF;
+END $$;
+
+-- DELETE corrective stock_logs yang di-insert oleh UP
+DELETE FROM stock_logs
+WHERE id IN (SELECT stock_log_id FROM migration_audit.jamali_w10_stocklog_corrections);
+
+-- Cleanup audit table
+DROP TABLE migration_audit.jamali_w10_stocklog_corrections;
+
+COMMIT;

internal/database/migrations/20260528123243_fix_stock_log_drift_jamali_merge.up.sql

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+BEGIN;
+
+-- ============================================================
+-- Fix stock_log drift pasca-merge warehouse Jamali (NON_AKTIF) -> Gudang Farm Jamali.
+-- Follow-up migration setelah 20260528121631_normalize_warehouse_jamali_10_to_25.
+--
+-- Setelah merge, `stock_logs.stock` (running ledger) drift dari
+-- `product_warehouses.qty` karena: pre-existing drift di W10 + W25 sources,
+-- plus FIFO reflow yang trigger pasca-merge (Recording-Edit) recompute
+-- pw.qty tapi stock_logs tidak ikut update.
+--
+-- Migration ini insert 1 ADJUSTMENT stock_log corrective per PW yang drift
+-- supaya `last_stock_log.stock = pw.qty`. Logic ekivalen dengan
+-- `cmd/fix-stock-log-drift`.
+--
+-- Karakteristik dynamic:
+--   - Tidak hardcode PW IDs atau drift values
+--   - Iterate via merge target + W10-only kept PWs (data-driven dari snapshot)
+--   - Per PW: hitung drift runtime, skip kalau negligible (< 0.001) atau no logs
+--   - Track stock_log IDs yang di-insert untuk DOWN reverse
+-- ============================================================
+
+-- Guard: previous migration (normalisasi) audit harus ada
+DO $$
+BEGIN
+  IF NOT EXISTS (
+    SELECT 1 FROM information_schema.tables
+    WHERE table_schema = 'migration_audit'
+      AND table_name = 'jamali_w10_qty_merge'
+  ) THEN
+    RAISE EXCEPTION
+      'Migration 20260528121631 (normalize_warehouse_jamali) belum dijalankan atau audit-nya sudah di-drop. Apply UP-nya dulu sebelum migration ini.';
+  END IF;
+END $$;
+
+-- Audit table untuk track stock_log IDs yang di-insert (untuk DOWN reverse)
+DROP TABLE IF EXISTS migration_audit.jamali_w10_stocklog_corrections;
+CREATE TABLE migration_audit.jamali_w10_stocklog_corrections (
+  stock_log_id BIGINT NOT NULL PRIMARY KEY,
+  product_warehouse_id BIGINT NOT NULL,
+  drift NUMERIC(15,3) NOT NULL,
+  inserted_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Insert corrective ADJUSTMENT stock_log untuk tiap PW yang drift
+DO $$
+DECLARE
+  rec RECORD;
+  v_last_log_stock NUMERIC(15,3);
+  v_drift NUMERIC(15,3);
+  v_new_log_id BIGINT;
+  v_inserts INT := 0;
+BEGIN
+  FOR rec IN (
+    SELECT pw.id AS pw_id, pw.qty AS qty
+    FROM product_warehouses pw
+    WHERE pw.id IN (
+      -- Merge target W25 PWs (9 rows)
+      SELECT target_pw_id FROM migration_audit.jamali_w10_qty_merge
+      UNION
+      -- W10-only PWs yang di-update warehouse_id 10->25 (4 rows)
+      SELECT id FROM migration_audit.jamali_w10_pw_w10only_snapshot
+    )
+  ) LOOP
+    -- Ambil stock akhir di stock_logs ledger
+    SELECT stock INTO v_last_log_stock
+    FROM stock_logs
+    WHERE product_warehouse_id = rec.pw_id
+    ORDER BY id DESC
+    LIMIT 1;
+
+    -- PW tanpa stock_logs entry (mis. 1188/1189/1190 ayam) -> skip
+    IF v_last_log_stock IS NULL THEN
+      CONTINUE;
+    END IF;
+
+    v_drift := rec.qty - v_last_log_stock;
+
+    -- Drift negligible -> skip
+    IF ABS(v_drift) < 0.001 THEN
+      CONTINUE;
+    END IF;
+
+    -- Insert corrective ADJUSTMENT stock_log
+    INSERT INTO stock_logs (
+      product_warehouse_id, loggable_type, loggable_id,
+      notes, increase, decrease, stock, created_by, created_at
+    ) VALUES (
+      rec.pw_id,
+      'ADJUSTMENT',
+      0,
+      'Koreksi stock_log drift pasca-merge warehouse Jamali (migration 20260528123243)',
+      CASE WHEN v_drift > 0 THEN v_drift ELSE 0 END,
+      CASE WHEN v_drift < 0 THEN -v_drift ELSE 0 END,
+      rec.qty,
+      1,
+      NOW()
+    ) RETURNING id INTO v_new_log_id;
+
+    -- Track ke audit table untuk DOWN
+    INSERT INTO migration_audit.jamali_w10_stocklog_corrections (
+      stock_log_id, product_warehouse_id, drift
+    ) VALUES (v_new_log_id, rec.pw_id, v_drift);
+
+    v_inserts := v_inserts + 1;
+  END LOOP;
+
+  RAISE NOTICE 'Inserted % corrective stock_logs to align ledger with pw.qty', v_inserts;
+END $$;
+
+COMMIT;