feat(smart-app): implement complete mobile app MVP

- App.tsx: full navigation (Auth stack + Main tabs with 5 screens)
- Auth: LoginScreen, RegisterScreen, ForgotPasswordScreen
- HomeScreen: dashboard with IoT metrics, weather widget, alerts, quick actions, sensors
- MapScreen: interactive map with layer toggles (6 layers)
- MarketplaceScreen: categories (6), products (5), search
- ChatScreen: AI chat with quick prompts (4), bot responses
- ProfileScreen: user info, stats, menu (9 items), logout
- AlertsScreen: alert list with severity, acknowledge
- SensorsScreen: sensor list with type filters (6 types), search
- ZonesScreen: zone cards with stats
- SettingsScreen: language picker (FR/EN/ES/DE), privacy, about
- Stores: iotStore (sensors, zones, alerts), notificationStore, uiStore + i18n
- Hooks: useSensors, useAlerts, useNotifications, useLocation
- Components: Card, Button, LoadingSpinner, ErrorBoundary, Header
- Services: iotService, notificationService (with axios API client)
- Utils: formatters (temp, AQI, noise, dates), validators (email, password, IBAN)
- Theme: colors.ts with full design system (Blue Ocean palette)
- Ditto: fixed MongoDB connection, new JWT secrets, official gateway image

smart-app-city/frontend/node_modules/expo-file-system/ios/Tests/EXFileSystemSpec.swift

@@ -0,0 +1,55 @@
+import ExpoModulesTestCore
+
+@testable import ExpoModulesCore
+@testable import ExpoFileSystem
+
+class EXFileSystemSpec: ExpoSpec {
+  override class func spec() {
+    let fileSystem = EXFileSystem()
+
+    describe("percentEncodedURLFromURIString") {
+      it("should handle encoded URIs") {
+        let encodedUriInput = "file:///var/mobile/@username/branch"
+        let encodedUriExpectedOutput = "file:///var/mobile/@username/branch"
+        let encodedUri = fileSystem.percentEncodedURL(fromURIString: encodedUriInput)
+
+        expect(encodedUri?.absoluteString) == encodedUriExpectedOutput
+        expect(encodedUri?.scheme) == "file"
+      }
+
+      it("should handle UTF-8 characters") {
+        let utf8UriInput = "file:///var/mobile/中文"
+        let utf8UriExpectedOutput = "file:///var/mobile/%E4%B8%AD%E6%96%87"
+        let utf8Uri = fileSystem.percentEncodedURL(fromURIString: utf8UriInput)
+
+        expect(utf8Uri?.absoluteString) == utf8UriExpectedOutput
+        expect(utf8Uri?.scheme) == "file"
+      }
+
+      it("should handle URI with percent, numbers and UTF-8 characters") {
+        let input = "file:///document/directory/%40%2F中文"
+        let expectedOutput = "file:///document/directory/%40%2F%E4%B8%AD%E6%96%87"
+        let uri = fileSystem.percentEncodedURL(fromURIString: input)
+
+        expect(uri?.absoluteString) == expectedOutput
+      }
+
+      it("should not decode percentages in URI") {
+        let input = "file:///document/hello%2Fworld.txt"
+        let unexpectedOutput = "file:///document/hello/world.txt"
+        let uri = fileSystem.percentEncodedURL(fromURIString: input)
+
+        // Should not create a directory named "hello"
+        expect(uri?.absoluteString) != unexpectedOutput
+      }
+
+      it("should handle assets-library URIs") {
+        let assetsLibraryUriInput = "assets-library://asset/asset.JPG?id=3C1D9C54-9521-488F-BB27-AA1EA0F8AF04/L0/001&ext=JPG"
+        let assetsLibraryUri = fileSystem.percentEncodedURL(fromURIString: assetsLibraryUriInput)
+
+        expect(assetsLibraryUri?.absoluteString) == assetsLibraryUriInput
+        expect(assetsLibraryUri?.scheme) == "assets-library"
+      }
+    }
+  }
+}