feat: update Dockerfile stages for improved dependency management; add prisma to package.json and package-lock.json

flutter/Dockerfile

@@ -1,9 +1,9 @@
 # Stage 1 – Build Flutter web
-FROM ghcr.io/cirruslabs/flutter:stable AS builder
+FROM ghcr.io/cirruslabs/flutter:3.41.9 AS builder
 
 WORKDIR /app
 
-COPY pubspec.yaml pubspec.lock* ./
+COPY pubspec.yaml pubspec.lock ./
 RUN flutter pub get
 
 COPY . .

flutter/lib/features/inventory/presentation/swipeable_inventory_tile.dart

@@ -291,7 +291,6 @@ class _ForegroundTile extends ConsumerWidget {
   String _fmtQty(double v) => formatQuantity(v);
 
   String _formatDate(String iso) => formatDateString(iso);
-  }
 }
 
 // ── Trailing action buttons ─────────────────────────────────────────────────