Infrastructure: Implement master/dev/vX branching, save git path, and fix username casing

frontend/lib/db.ts

@@ -0,0 +1,41 @@
+import Dexie, { Table } from 'dexie';
+
+export interface Item {
+  id?: number;
+  barcode: string;
+  name: string;
+  category: string;
+  part_number?: string;
+  color?: string;
+  specs?: string;
+  quantity: number;
+  min_quantity: number;
+  image_url?: string;
+  labels_data?: string;
+}
+
+export interface PendingOperation {
+  id?: number;
+  type: 'CHECK_IN' | 'CHECK_OUT' | 'TRASH';
+  barcode: string;
+  quantity: number;
+  timestamp: number;
+  synced: 0 | 1; // 0 for false, 1 for true
+  uuid: string;
+  details?: string;
+}
+
+export class InventoryDatabase extends Dexie {
+  items!: Table<Item>;
+  pendingOperations!: Table<PendingOperation>;
+
+  constructor() {
+    super('InventoryDatabase');
+    this.version(3).stores({
+      items: '++id, barcode, name, category, part_number, color',
+      pendingOperations: '++id, barcode, timestamp, synced, uuid'
+    });
+  }
+}
+
+export const db = new InventoryDatabase();