feat(BE-59,60,61): build stock transfer API with validation and audit log

- Implement CreateOne for stock transfer with multi-delivery and validation
- Preload warehouse, location, and area relations in transfer response
- Add audit log for transfer
- Improve transaction handling and error management

internal/database/migrations/20251014024642_create_stock_transfer_details.up.sql

@@ -9,7 +9,6 @@ CREATE TABLE IF NOT EXISTS stock_transfer_details (
     quantity NUMERIC(15, 3) NOT NULL CHECK (quantity > 0),
     before_quantity NUMERIC(15, 3),
     after_quantity NUMERIC(15, 3),
-    note TEXT,
     created_at TIMESTAMPTZ DEFAULT NOW(),
     updated_at TIMESTAMPTZ DEFAULT NOW(),
     deleted_at TIMESTAMPTZ

internal/database/migrations/20251014024656_create_stock_transfer_deliveries.up.sql

@@ -12,7 +12,6 @@ CREATE TABLE IF NOT EXISTS stock_transfer_deliveries (
     document_path TEXT,
     shipping_cost_item NUMERIC(15,3),
     shipping_cost_total NUMERIC(15,3),
-    note TEXT,
     created_at TIMESTAMPTZ DEFAULT NOW(),
     updated_at TIMESTAMPTZ DEFAULT NOW(),
     deleted_at TIMESTAMPTZ