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/graphql/validation/rules/custom/NoDeprecatedCustomRule.js.flow

@@ -0,0 +1,94 @@
+// @flow strict
+import invariant from '../../../jsutils/invariant';
+
+import { GraphQLError } from '../../../error/GraphQLError';
+
+import type { ASTVisitor } from '../../../language/visitor';
+
+import { getNamedType, isInputObjectType } from '../../../type/definition';
+
+import type { ValidationContext } from '../../ValidationContext';
+
+/**
+ * No deprecated
+ *
+ * A GraphQL document is only valid if all selected fields and all used enum values have not been
+ * deprecated.
+ *
+ * Note: This rule is optional and is not part of the Validation section of the GraphQL
+ * Specification. The main purpose of this rule is detection of deprecated usages and not
+ * necessarily to forbid their use when querying a service.
+ */
+export function NoDeprecatedCustomRule(context: ValidationContext): ASTVisitor {
+  return {
+    Field(node) {
+      const fieldDef = context.getFieldDef();
+      const deprecationReason = fieldDef?.deprecationReason;
+      if (fieldDef && deprecationReason != null) {
+        const parentType = context.getParentType();
+        invariant(parentType != null);
+        context.reportError(
+          new GraphQLError(
+            `The field ${parentType.name}.${fieldDef.name} is deprecated. ${deprecationReason}`,
+            node,
+          ),
+        );
+      }
+    },
+    Argument(node) {
+      const argDef = context.getArgument();
+      const deprecationReason = argDef?.deprecationReason;
+      if (argDef && deprecationReason != null) {
+        const directiveDef = context.getDirective();
+        if (directiveDef != null) {
+          context.reportError(
+            new GraphQLError(
+              `Directive "@${directiveDef.name}" argument "${argDef.name}" is deprecated. ${deprecationReason}`,
+              node,
+            ),
+          );
+        } else {
+          const parentType = context.getParentType();
+          const fieldDef = context.getFieldDef();
+          invariant(parentType != null && fieldDef != null);
+          context.reportError(
+            new GraphQLError(
+              `Field "${parentType.name}.${fieldDef.name}" argument "${argDef.name}" is deprecated. ${deprecationReason}`,
+              node,
+            ),
+          );
+        }
+      }
+    },
+    ObjectField(node) {
+      const inputObjectDef = getNamedType(context.getParentInputType());
+      if (isInputObjectType(inputObjectDef)) {
+        const inputFieldDef = inputObjectDef.getFields()[node.name.value];
+        // flowlint-next-line unnecessary-optional-chain:off
+        const deprecationReason = inputFieldDef?.deprecationReason;
+        if (deprecationReason != null) {
+          context.reportError(
+            new GraphQLError(
+              `The input field ${inputObjectDef.name}.${inputFieldDef.name} is deprecated. ${deprecationReason}`,
+              node,
+            ),
+          );
+        }
+      }
+    },
+    EnumValue(node) {
+      const enumValueDef = context.getEnumValue();
+      const deprecationReason = enumValueDef?.deprecationReason;
+      if (enumValueDef && deprecationReason != null) {
+        const enumTypeDef = getNamedType(context.getInputType());
+        invariant(enumTypeDef != null);
+        context.reportError(
+          new GraphQLError(
+            `The enum value "${enumTypeDef.name}.${enumValueDef.name}" is deprecated. ${deprecationReason}`,
+            node,
+          ),
+        );
+      }
+    },
+  };
+}