Add full app source

Adds the Flutter inventory app source, cleaned up for a shared repo:
generic package name, no hardcoded ERP endpoints (moved to gitignored
local config), no dead auth code, no debug logging of session data.

lib/my_app.dart

@@ -0,0 +1,52 @@
+import 'package:curved_navigation_bar/curved_navigation_bar.dart';
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:inventory_app/home.dart';
+import 'package:inventory_app/controllers/home_controller.dart';
+import 'package:inventory_app/views/panoramic.dart';
+import 'package:inventory_app/views/profile.dart';
+
+class MyApp extends StatefulWidget {
+  const MyApp({super.key});
+
+  @override
+  State<MyApp> createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
+  int _selectedIndex = 0;
+  late final HomeController controller;
+
+  @override
+  void initState() {
+    super.initState();
+    Get.lazyPut(() => HomeController());
+  }
+
+  final List<Widget> _screens = [
+    Home(), // Your main inventory/home screen
+    ProfilePage(), // Profile page
+    Panoramic(),
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: IndexedStack(index: _selectedIndex, children: _screens),
+      bottomNavigationBar: CurvedNavigationBar(
+        backgroundColor: Colors.transparent,
+        color: Colors.blue,
+        onTap: (index) {
+          setState(() {
+            _selectedIndex = index;
+          });
+        },
+        items: const [
+          Icon(Icons.home, color: Colors.white),
+          Icon(Icons.person, color: Colors.white),
+          Icon(Icons.image, color: Colors.white),
+        ],
+      ),
+    );
+  }
+}