[NOT FULLY WORKING] Added frontend react native interface.

backend/main.py

@@ -2,6 +2,7 @@
 from contextlib import _AsyncGeneratorContextManager, asynccontextmanager
 from typing import Any, Callable
 from fastapi import FastAPI, Depends
+from fastapi.middleware.cors import CORSMiddleware
 from core.database import get_engine, Base
 from modules import router
 import logging
@@ -24,3 +25,17 @@ app = FastAPI(lifespan=lifespan)
 
 # Include module router
 app.include_router(router)
+
+# CORS
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["http://localhost:8081"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"]
+)
+
+# Health endpoint
+@app.get("/api/health")
+def health():
+    return {"status": "ok"}

backend/modules/calendar/api.py

@@ -25,6 +25,8 @@ def get_events(
     start: datetime | None = None,
     end: datetime | None = None
 ):
+    start = None if start == "" else start
+    end = None if end == "" else end
     return get_calendar_events(db, user.id, start, end)
 
 @router.put("/events/{event_id}", response_model=CalendarEventResponse)

interfaces/nativeapp/.gitignore

@@ -0,0 +1,36 @@
+# Learn more https://docs.github.com/en/get-started/getting-started-with-git/ignoring-files
+
+# dependencies
+node_modules/
+
+# Expo
+.expo/
+dist/
+web-build/
+expo-env.d.ts
+
+# Native
+*.orig.*
+*.jks
+*.p8
+*.p12
+*.key
+*.mobileprovision
+
+# Metro
+.metro-health-check*
+
+# debug
+npm-debug.*
+yarn-debug.*
+yarn-error.*
+
+# macOS
+.DS_Store
+*.pem
+
+# local env files
+.env*.local
+
+# typescript
+*.tsbuildinfo

interfaces/nativeapp/App.tsx

@@ -0,0 +1,32 @@
+// App.tsx
+import React from 'react';
+import { Platform } from 'react-native';
+import { Provider as PaperProvider } from 'react-native-paper';
+import { NavigationContainer } from '@react-navigation/native'; // Always used
+import { SafeAreaProvider } from 'react-native-safe-area-context';
+import { StatusBar } from 'expo-status-bar';
+
+import { AuthProvider } from './src/contexts/AuthContext';
+import RootNavigator from './src/navigation/RootNavigator';
+import theme from './src/constants/theme';
+// Import the combined theme
+import { CombinedDarkTheme } from './src/navigation/WebAppLayout'; // Adjust import path if needed
+
+export default function App() {
+  return (
+    <SafeAreaProvider>
+      <AuthProvider>
+        <PaperProvider theme={theme}>
+          {/* NavigationContainer wraps RootNavigator for ALL platforms */}
+          <NavigationContainer theme={CombinedDarkTheme}>
+             <RootNavigator />
+          </NavigationContainer>
+          <StatusBar
+            style="light" // Assuming dark theme
+            backgroundColor={Platform.OS === 'web' ? theme.colors.background : theme.colors.surface}
+          />
+        </PaperProvider>
+      </AuthProvider>
+    </SafeAreaProvider>
+  );
+}

interfaces/nativeapp/app.json

@@ -0,0 +1,31 @@
+{
+  "expo": {
+    "name": "webapp",
+    "slug": "webapp",
+    "version": "1.0.0",
+    "orientation": "portrait",
+    "icon": "./assets/icon.png",
+    "userInterfaceStyle": "light",
+    "newArchEnabled": true,
+    "splash": {
+      "image": "./assets/splash-icon.png",
+      "resizeMode": "contain",
+      "backgroundColor": "#ffffff"
+    },
+    "ios": {
+      "supportsTablet": true
+    },
+    "android": {
+      "adaptiveIcon": {
+        "foregroundImage": "./assets/adaptive-icon.png",
+        "backgroundColor": "#ffffff"
+      }
+    },
+    "web": {
+      "favicon": "./assets/favicon.png"
+    },
+    "plugins": [
+      "expo-secure-store"
+    ]
+  }
+}

interfaces/nativeapp/index.ts

@@ -0,0 +1,8 @@
+import { registerRootComponent } from 'expo';
+
+import App from './App';
+
+// registerRootComponent calls AppRegistry.registerComponent('main', () => App);
+// It also ensures that whether you load the app in Expo Go or in a native build,
+// the environment is set up appropriately
+registerRootComponent(App);

interfaces/nativeapp/package.json

@@ -0,0 +1,41 @@
+{
+  "name": "nativeapp",
+  "version": "1.0.0",
+  "main": "index.ts",
+  "scripts": {
+    "start": "expo start",
+    "android": "expo start --android",
+    "ios": "expo start --ios",
+    "web": "expo start --web"
+  },
+  "dependencies": {
+    "@expo/metro-runtime": "~4.0.1",
+    "@react-navigation/bottom-tabs": "^7.3.10",
+    "@react-navigation/native": "^7.1.6",
+    "@react-navigation/native-stack": "^7.3.10",
+    "async-storage": "^0.1.0",
+    "axios": "^1.8.4",
+    "date-fns": "^4.1.0",
+    "expo": "~52.0.46",
+    "expo-secure-store": "~14.0.1",
+    "expo-status-bar": "~2.0.1",
+    "react": "18.3.1",
+    "react-dom": "18.3.1",
+    "react-native": "0.76.9",
+    "react-native-async-storage": "^0.0.1",
+    "react-native-calendars": "^1.1311.0",
+    "react-native-paper": "^5.13.2",
+    "react-native-safe-area-context": "4.12.0",
+    "react-native-screens": "~4.4.0",
+    "react-native-vector-icons": "^10.2.0",
+    "react-native-web": "~0.19.13",
+    "@react-native-async-storage/async-storage": "1.23.1"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.25.2",
+    "@types/react": "~18.3.12",
+    "@types/react-native-vector-icons": "^6.4.18",
+    "typescript": "^5.3.3"
+  },
+  "private": true
+}

interfaces/nativeapp/src/api/auth.ts

@@ -0,0 +1,12 @@
+import apiClient from './client';
+
+
+export const healthCheck = async (): Promise<{ status: string }> => {
+    try {
+        const response = await apiClient.get('/health');
+        return response.data
+    } catch (error) {
+        console.error("Error fetching backend health:", error);
+        throw error;
+    }
+}

interfaces/nativeapp/src/api/calendar.ts

@@ -0,0 +1,19 @@
+import apiClient from './client';
+import { CalendarEvent } from '../types/calendar';
+
+export const getCalendarEvents = async (start?: Date, end?: Date): Promise<CalendarEvent[]> => {
+    try {
+        const params: Record<string, string> = {};
+        if (start instanceof Date) {
+            params.start = start.toISOString();
+        }
+        if (end instanceof Date) {
+            params.end = end.toISOString();
+        }
+        const response = await apiClient.get('/calendar/events', { params });
+        return response.data;
+    } catch (error) {
+        console.error("Error fetching calendar events", error);
+        throw error;
+    }
+}

interfaces/nativeapp/src/api/client.ts

@@ -0,0 +1,139 @@
+// src/api/client.ts
+import axios, { AxiosError } from 'axios'; // Import AxiosError
+import { Platform } from 'react-native';
+import * as SecureStore from 'expo-secure-store';
+import AsyncStorage from '@react-native-async-storage/async-storage';
+
+
+const API_BASE_URL = process.env.EXPO_PUBLIC_API_URL || 'http://localhost:8000/api';
+const TOKEN_KEY = 'maia_access_token';
+
+console.log("Using API Base URL:", API_BASE_URL);
+
+// Helper functions for storage (assuming they are defined above or imported)
+// const getToken = async (): Promise<string | null> => { ... };
+// const deleteToken = async () => { ... };
+
+
+const apiClient = axios.create({
+  baseURL: API_BASE_URL,
+  headers: {
+    'Content-Type': 'application/json',
+  },
+  timeout: 10000,
+  ...(Platform.OS === 'web' ? { withCredentials: true } : {}),
+});
+
+// --- Request Interceptor remains the same ---
+apiClient.interceptors.request.use(
+  async (config) => {
+    // Using AsyncStorage for web token retrieval here too for consistency
+    const token = Platform.OS === 'web'
+        ? await AsyncStorage.getItem(TOKEN_KEY)
+        : await SecureStore.getItemAsync(TOKEN_KEY).catch(() => null); // Handle potential SecureStore error
+
+    if (token) {
+      config.headers.Authorization = `Bearer ${token}`;
+    }
+    console.log('[API Client] Starting Request', config.method?.toUpperCase(), config.url);
+    return config;
+  },
+  (error) => {
+    console.error('[API Client] Request Setup Error:', error);
+    return Promise.reject(error);
+  }
+);
+
+
+// --- Modified Response Interceptor ---
+apiClient.interceptors.response.use(
+  (response) => {
+    // Success case
+    return response;
+  },
+  async (error: AxiosError) => { // Explicitly type error as AxiosError
+    const originalRequest = error.config;
+
+    // Check if the error has a response object (i.e., server responded with error status)
+    if (error.response) {
+      // Server responded with an error status code (4xx, 5xx)
+      console.error('[API Client] Response Error Status:', error.response.status);
+      console.error('[API Client] Response Error Data:', error.response.data);
+
+      // Handle 401 specifically
+      if (error.response.status === 401) {
+        console.warn('[API Client] Unauthorized (401). Token might be expired or invalid.');
+
+        if (!originalRequest?._retry) {
+          originalRequest._retry = true; // Mark the request as retried to avoid infinite loops
+
+          try {
+            console.log('[API Client] Attempting token refresh...');
+            const refreshResponse = await apiClient.post('/auth/refresh', {}, {
+              headers: {
+          'Content-Type': 'application/json',
+              },
+            });
+
+            if (refreshResponse.status === 200) {
+              const newToken = refreshResponse.data?.accessToken;
+
+              if (newToken) {
+          console.log('[API Client] Token refreshed successfully.');
+
+          // Save the new token
+          if (Platform.OS === 'web') {
+            await AsyncStorage.setItem(TOKEN_KEY, newToken);
+          } else {
+            await SecureStore.setItemAsync(TOKEN_KEY, newToken);
+          }
+
+          // Update the Authorization header for future requests
+          apiClient.defaults.headers.common['Authorization'] = `Bearer ${newToken}`;
+          originalRequest.headers['Authorization'] = `Bearer ${newToken}`;
+
+          // Retry the original request with the new token
+          return apiClient(originalRequest);
+              }
+            }
+          } catch (refreshError) {
+            console.error('[API Client] Token refresh failed:', refreshError);
+          }
+        }
+
+        // Clear potentially invalid token due to 401
+        console.log('[API Client] Clearing potentially invalid token due to 401.');
+         if (Platform.OS === 'web') {
+            await AsyncStorage.removeItem(TOKEN_KEY);
+         } else {
+            await SecureStore.deleteItemAsync(TOKEN_KEY).catch(() => {}); // Ignore delete error
+         }
+        delete apiClient.defaults.headers.common['Authorization'];
+
+        // How to trigger logout? Propagating error is simplest for now.
+      }
+    } else if (error.request) {
+      // The request was made but no response was received
+      // (e.g., network error, CORS block preventing response reading, server timeout)
+      console.error('[API Client] Network Error or No Response:', error.message);
+      // Log the request object for debugging if needed
+      // console.error('[API Client] Error Request Object:', error.request);
+       // If CORS is suspected, this is often where the error ends up.
+       if (error.message.toLowerCase().includes('network error') && Platform.OS === 'web') {
+           console.warn('[API Client] Hint: A "Network Error" on web often masks a CORS issue. Check browser console & backend CORS config.');
+       }
+
+    } else {
+      // Something happened in setting up the request that triggered an Error
+      console.error('[API Client] Request Setup Error (Interceptor):', error.message);
+    }
+
+    // Log the config that failed (optional, can be verbose)
+    // console.error("[API Client] Failing Request Config:", error.config);
+
+    // Always reject the promise to propagate the error
+    return Promise.reject(error);
+  }
+);
+
+export default apiClient;

interfaces/nativeapp/src/components/WebSidebar.tsx

@@ -0,0 +1,119 @@
+// src/components/WebSidebar.tsx
+import React from 'react';
+import { View, StyleSheet, Pressable } from 'react-native';
+import { Text, useTheme, Icon } from 'react-native-paper';
+import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
+import { NavigationContainerRef } from '@react-navigation/native'; // Import ref type
+import { RootStackParamList } from '../types/navigation'; // Import stack param list
+
+// Define Props including the navigation ref
+interface WebSidebarProps {
+  navigationRef: React.RefObject<NavigationContainerRef<RootStackParamList>>;
+  currentRouteName?: string; // To highlight the active item
+}
+
+// Define navigation items
+const navItems = [
+  { name: 'Dashboard', icon: 'view-dashboard', label: 'Dashboard' },
+  { name: 'Chat', icon: 'chat', label: 'Chat' },
+  { name: 'Calendar', icon: 'calendar', label: 'Calendar' },
+  { name: 'Profile', icon: 'account-circle', label: 'Profile' },
+] as const; // Use 'as const' for stricter typing of names
+
+const WebSidebar = ({ navigationRef, currentRouteName }: WebSidebarProps) => {
+  const theme = useTheme();
+
+  const handleNavigate = (screenName: keyof RootStackParamList) => {
+    // Use the ref to navigate
+    if (navigationRef.current) {
+      navigationRef.current.navigate(screenName);
+    }
+  };
+
+  const styles = StyleSheet.create({
+    container: {
+      width: 240, // Fixed width for the sidebar
+      height: '100%',
+      backgroundColor: theme.colors.surface, // Sidebar background
+      paddingTop: 40, // Space from top
+      paddingHorizontal: 10,
+      borderRightWidth: 1,
+      borderRightColor: theme.colors.background, // Subtle border
+    },
+    logoArea: {
+      marginBottom: 30,
+      alignItems: 'center',
+      // Add your logo image here if desired
+      // <Image source={require('../assets/icon.png')} style={styles.logo} />
+    },
+    logoText: {
+        fontSize: 24,
+        fontWeight: 'bold',
+        color: theme.colors.primary, // Use primary color for logo text
+    },
+    navItem: {
+      flexDirection: 'row',
+      alignItems: 'center',
+      paddingVertical: 12,
+      paddingHorizontal: 16,
+      borderRadius: theme.roundness,
+      marginBottom: 8,
+    },
+    activeNavItem: {
+      backgroundColor: theme.colors.primary, // Highlight active item background
+    },
+    icon: {
+      marginRight: 16,
+    },
+    label: {
+      fontSize: 16,
+      fontWeight: '500',
+    },
+    activeLabel: {
+      color: theme.colors.onPrimary, // Text color on primary background
+    },
+    inactiveLabel: {
+       color: theme.colors.textSecondary, // Text color for inactive items
+    },
+  });
+
+  return (
+    <View style={styles.container}>
+       <View style={styles.logoArea}>
+            {/* Placeholder Logo Text */}
+            <Text style={styles.logoText}>MAIA</Text>
+       </View>
+
+      {navItems.map((item) => {
+        const isActive = currentRouteName === item.name;
+        return (
+          <Pressable
+            key={item.name}
+            onPress={() => handleNavigate(item.name)}
+            style={[
+              styles.navItem,
+              isActive && styles.activeNavItem, // Apply active style conditionally
+            ]}
+          >
+            <MaterialCommunityIcons
+                name={item.icon}
+                size={24}
+                color={isActive ? theme.colors.onPrimary : theme.colors.textSecondary}
+                style={styles.icon}
+            />
+            <Text
+              style={[
+                styles.label,
+                isActive ? styles.activeLabel : styles.inactiveLabel
+              ]}
+            >
+              {item.label}
+            </Text>
+          </Pressable>
+        );
+      })}
+    </View>
+  );
+};
+
+export default WebSidebar;

interfaces/nativeapp/src/constants/colors.ts

@@ -0,0 +1,11 @@
+// src/constants/colors.ts
+export const colors = {
+    background: '#0a0a0a', // Dark blue-teal background
+    primary: '#4DB6AC',    // Main teal color for text, icons, active elements
+    secondary: '#64FFDA',  // Bright cyan accent for highlights, important actions
+    surface: '#252525',    // Slightly lighter background for cards/modals (optional)
+    text: '#FFFFFF',       // White text for high contrast on dark background
+    textSecondary: '#B0BEC5', // Lighter gray for less important text
+    error: '#FF5252',      // Standard error color
+    disabled: '#78909C',   // Color for disabled elements
+};

interfaces/nativeapp/src/constants/theme.ts

@@ -0,0 +1,69 @@
+// src/constants/theme.ts
+import { MD3DarkTheme as DefaultTheme, configureFonts } from 'react-native-paper';
+import { colors } from './colors';
+
+// const fontConfig = {
+//   default: {
+//     regular: {
+//       fontFamily: 'Inter, sans-serif',
+//       fontWeight: 'normal',
+//       fontSize: 14,
+//       lineHeight: 20,
+//       letterSpacing: 0.25,
+//     },
+//     medium: {
+//       fontFamily: 'Inter, sans-serif',
+//       fontWeight: '500',
+//       fontSize: 16,
+//       lineHeight: 24,
+//       letterSpacing: 0.15,
+//     },
+//     light: {
+//       fontFamily: 'Inter, sans-serif',
+//       fontWeight: '300',
+//       fontSize: 12,
+//       lineHeight: 16,
+//       letterSpacing: 0.4,
+//     },
+//     thin: {
+//       fontFamily: 'Inter, sans-serif',
+//       fontWeight: '100',
+//       fontSize: 10,
+//       lineHeight: 14,
+//       letterSpacing: 0.5,
+//     },
+//   },
+// };
+// const fonts = configureFonts({ config: fontConfig });
+
+const theme = {
+  ...DefaultTheme, // Use MD3 dark theme as a base
+  // fonts: fonts,
+  colors: {
+    ...DefaultTheme.colors, // Keep default colors unless overridden
+    primary: colors.primary,
+    accent: colors.secondary, // Note: Paper v5 uses 'secondary' often where 'accent' was used
+    secondary: colors.secondary,
+    tertiary: colors.secondary, // Assign accent to tertiary as well if needed
+    background: colors.background,
+    surface: colors.surface || colors.background, // Use surface or fallback to background
+    text: colors.text,
+    onPrimary: colors.background, // Text color on primary background
+    onSecondary: colors.background, // Text color on secondary background
+    onBackground: colors.text,      // Text color on main background
+    onSurface: colors.text,        // Text color on surface background
+    error: colors.error,
+    disabled: colors.disabled,
+    placeholder: colors.textSecondary,
+    backdrop: 'rgba(0, 0, 0, 0.5)',
+     // Adjust other colors as needed (surfaceVariant, primaryContainer, etc.)
+    // You might need to experiment based on Paper v5's specific color roles
+    primaryContainer: colors.primary, // Example adjustment
+    secondaryContainer: colors.secondary, // Example adjustment
+
+  },
+   // You can customize other theme aspects like roundness, animation scale etc.
+   roundness: 4,
+};
+
+export default theme;

interfaces/nativeapp/src/contexts/AuthContext.tsx

@@ -0,0 +1,210 @@
+// src/contexts/AuthContext.tsx
+import React, { createContext, useState, useEffect, useContext, useMemo, useCallback } from 'react';
+import { Platform, ActivityIndicator, View, StyleSheet } from 'react-native'; // Import Platform
+import * as SecureStore from 'expo-secure-store';
+import AsyncStorage from '@react-native-async-storage/async-storage'; // Use AsyncStorage for web localStorage
+import apiClient from '../api/client';
+import { useTheme } from 'react-native-paper';
+
+const TOKEN_KEY = 'maia_access_token'; // Use the same key
+
+interface AuthContextData {
+  authToken: string | null;
+  isAuthenticated: boolean;
+  isLoading: boolean;
+  login: (username: string, password: string) => Promise<void>;
+  logout: () => Promise<void>;
+}
+
+const AuthContext = createContext<AuthContextData>({
+  authToken: null,
+  isAuthenticated: false,
+  isLoading: true,
+  login: async () => { throw new Error('AuthContext not initialized'); },
+  logout: async () => { throw new Error('AuthContext not initialized'); },
+});
+
+interface AuthProviderProps {
+  children: React.ReactNode;
+}
+
+// Helper functions for platform-specific storage
+const storeToken = async (token: string) => {
+  if (Platform.OS === 'web') {
+    try {
+        // Use AsyncStorage for web (polyfilled to localStorage)
+        await AsyncStorage.setItem(TOKEN_KEY, token);
+    } catch (e) {
+        console.error("Failed to save token to web storage", e);
+    }
+  } else {
+    await SecureStore.setItemAsync(TOKEN_KEY, token);
+  }
+};
+
+const getToken = async (): Promise<string | null> => {
+  if (Platform.OS === 'web') {
+     try {
+        return await AsyncStorage.getItem(TOKEN_KEY);
+     } catch (e) {
+        console.error("Failed to get token from web storage", e);
+        return null;
+     }
+  } else {
+    // SecureStore might throw if not available, handle gracefully
+    try {
+        return await SecureStore.getItemAsync(TOKEN_KEY);
+    } catch (e) {
+        console.error("Failed to get token from secure store", e);
+        // If SecureStore fails on native, treat as no token found
+        return null;
+    }
+  }
+};
+
+const deleteToken = async () => {
+  if (Platform.OS === 'web') {
+     try {
+        await AsyncStorage.removeItem(TOKEN_KEY);
+     } catch (e) {
+        console.error("Failed to remove token from web storage", e);
+     }
+  } else {
+    // Avoid potential crash if SecureStore is unavailable
+    try {
+       await SecureStore.deleteItemAsync(TOKEN_KEY);
+    } catch (e) {
+        console.error("Failed to delete token from secure store", e);
+    }
+  }
+};
+
+
+export const AuthProvider: React.FC<AuthProviderProps> = ({ children }) => {
+  const [authToken, setAuthToken] = useState<string | null>(null);
+  const [isLoading, setIsLoading] = useState<boolean>(true);
+
+  const loadToken = useCallback(async () => {
+    console.log("[AuthContext] loadToken: Starting..."); // Log: Start
+    setIsLoading(true);
+    try {
+      console.log("[AuthContext] loadToken: Calling getToken()..."); // Log: Before await
+      const storedToken = await getToken(); // Use helper
+      console.log("[AuthContext] loadToken: getToken() returned:", storedToken); // Log: After await
+
+      if (storedToken) {
+        console.log('[AuthContext] loadToken: Token found. Setting state and headers.'); // Log: Token Found Path
+        setAuthToken(storedToken);
+        apiClient.defaults.headers.common['Authorization'] = `Bearer ${storedToken}`;
+      } else {
+        console.log('[AuthContext] loadToken: No token found. Clearing state and headers.'); // Log: No Token Path
+        setAuthToken(null);
+        delete apiClient.defaults.headers.common['Authorization'];
+      }
+      console.log('[AuthContext] loadToken: Try block finished successfully.'); // Log: Try Success
+    } catch (error) {
+      // **Log the actual error object**
+      console.error("[AuthContext] loadToken: Caught error:", error); // Log: Catch Block
+      setAuthToken(null); // Ensure logged out state on error
+      delete apiClient.defaults.headers.common['Authorization'];
+    } finally {
+      console.log("[AuthContext] loadToken: Entering finally block."); // Log: Finally Start
+      setIsLoading(false);
+      console.log("[AuthContext] loadToken: setIsLoading(false) called."); // Log: Finally End
+    }
+  }, []);
+
+  useEffect(() => {
+    console.log("[AuthContext] useEffect: Component mounted, calling loadToken."); // Log: useEffect call
+    loadToken();
+  }, [loadToken]);
+
+  const login = useCallback(async (username: string, password: string) => {
+    console.log("[AuthContext] login: Function called with:", username); // Log: Function entry
+    try {
+      console.log("[AuthContext] login: Preparing to call apiClient.post for /auth/login");
+      console.log("[AuthContext] login: Data being sent:", { username: username, password: password });
+
+      // const response = await apiClient.post(`/auth/login?grant_type=password&username=${username}&password=${password}`);
+      const response = await apiClient.post(
+        '/auth/login',
+        'grant_type=password&username=' + encodeURIComponent(username) + '&password=' + encodeURIComponent(password) + '&scope=&client_id=&client_secret=',
+        {
+          headers: {
+            'accept': 'application/json',
+            'Content-Type': 'application/x-www-form-urlencoded',
+          },
+        }
+      );
+
+      console.log("[AuthContext] login: apiClient.post successful, response status:", response?.status); // Log success
+
+      const { access_token } = response.data;
+
+      if (!access_token || typeof access_token !== 'string') {
+         console.error("[AuthContext] login: Invalid token structure received:", response.data);
+         throw new Error('Invalid token received from server.');
+      }
+
+      console.log('[AuthContext] login: Login successful, received token.');
+      setAuthToken(access_token);
+      apiClient.defaults.headers.common['Authorization'] = `Bearer ${access_token}`;
+      await storeToken(access_token); // Use helper
+
+    } catch (error: any) {
+      // --- Log the error object *itself* ---
+      console.error("[AuthContext] login: Caught Error Object:", error);
+
+      // --- Check if it's an Axios error with config details ---
+      if (error.isAxiosError) {
+          console.error("[AuthContext] login: Axios Error Details:");
+          console.error("  Request Config:", error.config);
+          console.error("  Response:", error.response); // This will likely still be undefined
+          console.error("  Message:", error.message);
+      }
+
+      // Original logging (might be redundant now but keep for context)
+      console.error("Login failed:", error.response?.data || error.message);
+      throw error; // Re-throw
+    }
+  }, []);
+
+  const logout = useCallback(async () => {
+    console.log('Logging out.');
+    setAuthToken(null);
+    delete apiClient.defaults.headers.common['Authorization'];
+    await deleteToken(); // Use helper
+    // Optional backend logout call
+  }, []);
+
+  const contextValue = useMemo(() => ({
+    authToken,
+    isAuthenticated: !!authToken,
+    isLoading,
+    login,
+    logout,
+  }), [authToken, isLoading, login, logout]);
+
+  return (
+    <AuthContext.Provider value={contextValue}>
+      {children}
+    </AuthContext.Provider>
+  );
+};
+
+// --- useAuth and AuthLoadingScreen remain the same ---
+export const useAuth = () => {
+    const context = useContext(AuthContext);
+    if (!context) {
+      throw new Error('useAuth must be used within an AuthProvider');
+    }
+    return context;
+  };
+
+export const AuthLoadingScreen: React.FC = () => {
+    const theme = useTheme();
+    const styles = StyleSheet.create({
+        container: { flex: 1, justifyContent: 'center', alignItems: 'center', backgroundColor: theme.colors.background }
+    });
+    return (<View style={styles.container}><ActivityIndicator size="large" color={theme.colors.primary} /></View>);
+}

interfaces/nativeapp/src/navigation/AuthNavigator.tsx

@@ -0,0 +1,22 @@
+// src/navigation/AuthNavigator.tsx
+import React from 'react';
+import { createNativeStackNavigator } from '@react-navigation/native-stack';
+
+import LoginScreen from '../screens/LoginScreen';
+// Import SignUpScreen, ForgotPasswordScreen etc. if you have them
+
+import { AuthStackParamList } from '../types/navigation';
+
+const Stack = createNativeStackNavigator<AuthStackParamList>();
+
+const AuthNavigator = () => {
+  return (
+    <Stack.Navigator screenOptions={{ headerShown: false }}>
+      <Stack.Screen name="Login" component={LoginScreen} />
+      {/* Add other auth screens here */}
+      {/* <Stack.Screen name="SignUp" component={SignUpScreen} /> */}
+    </Stack.Navigator>
+  );
+};
+
+export default AuthNavigator;

interfaces/nativeapp/src/navigation/MobileTabNavigator.tsx

@@ -0,0 +1,73 @@
+// src/navigation/MobileTabNavigator.tsx
+import React from 'react';
+import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
+import { useTheme } from 'react-native-paper';
+import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
+
+import DashboardScreen from '../screens/DashboardScreen';
+import ChatScreen from '../screens/ChatScreen';
+import CalendarScreen from '../screens/CalendarScreen';
+import ProfileScreen from '../screens/ProfileScreen';
+
+import { MobileTabParamList } from '../types/navigation';
+
+const Tab = createBottomTabNavigator<MobileTabParamList>();
+
+const MobileTabNavigator = () => {
+  const theme = useTheme();
+
+  return (
+    <Tab.Navigator
+      initialRouteName="DashboardTab"
+      screenOptions={({ route }) => ({
+        tabBarActiveTintColor: theme.colors.secondary,
+        tabBarInactiveTintColor: theme.colors.textSecondary,
+        tabBarStyle: {
+          backgroundColor: theme.colors.surface,
+          borderTopColor: theme.colors.surface, // Or a subtle border
+        },
+        headerStyle: {
+          backgroundColor: theme.colors.surface,
+        },
+        headerTintColor: theme.colors.text,
+        tabBarIcon: ({ focused, color, size }) => {
+          let iconName: string = 'help-circle'; // Default icon
+
+          if (route.name === 'DashboardTab') {
+            iconName = focused ? 'view-dashboard' : 'view-dashboard-outline';
+          } else if (route.name === 'ChatTab') {
+            iconName = focused ? 'chat' : 'chat-outline';
+          } else if (route.name === 'CalendarTab') {
+            iconName = focused ? 'calendar' : 'calendar-outline';
+          } else if (route.name === 'ProfileTab') {
+            iconName = focused ? 'account-circle' : 'account-circle-outline';
+          }
+          return <MaterialCommunityIcons name={iconName} size={size} color={color} />;
+        },
+      })}
+    >
+      <Tab.Screen
+        name="DashboardTab"
+        component={DashboardScreen}
+        options={{ title: 'Dashboard', headerTitle: 'MAIA Dashboard' }}
+      />
+      <Tab.Screen
+        name="ChatTab"
+        component={ChatScreen}
+        options={{ title: 'Chat', headerTitle: 'MAIA Chat' }}
+      />
+      <Tab.Screen
+        name="CalendarTab"
+        component={CalendarScreen}
+        options={{ title: 'Calendar', headerTitle: 'Calendar' }}
+      />
+      <Tab.Screen
+        name="ProfileTab"
+        component={ProfileScreen}
+        options={{ title: 'Profile', headerTitle: 'Profile' }}
+      />
+    </Tab.Navigator>
+  );
+};
+
+export default MobileTabNavigator;

interfaces/nativeapp/src/navigation/RootNavigator.tsx

@@ -0,0 +1,38 @@
+// src/navigation/RootNavigator.tsx
+import React from 'react';
+import { createNativeStackNavigator } from '@react-navigation/native-stack';
+import { Platform } from 'react-native';
+
+import { useAuth, AuthLoadingScreen } from '../contexts/AuthContext';
+import AuthNavigator from './AuthNavigator'; // Unauthenticated flow
+import MobileTabNavigator from './MobileTabNavigator'; // Authenticated Mobile flow
+import WebAppLayout from './WebAppLayout'; // Authenticated Web flow
+
+import { RootStackParamList } from '../types/navigation';
+
+const Stack = createNativeStackNavigator<RootStackParamList>();
+
+const RootNavigator = () => {
+  const { isAuthenticated, isLoading } = useAuth();
+
+  // Show loading screen while checking auth state
+  if (isLoading) {
+    return <AuthLoadingScreen />;
+  }
+
+  return (
+    <Stack.Navigator screenOptions={{ headerShown: false }}>
+      {isAuthenticated ? (
+        // User is logged in: Choose main app layout based on platform
+        <Stack.Screen name="AppFlow">
+           {() => Platform.OS === 'web' ? <WebAppLayout /> : <MobileTabNavigator />}
+        </Stack.Screen>
+      ) : (
+        // User is not logged in: Show authentication flow
+        <Stack.Screen name="AuthFlow" component={AuthNavigator} />
+      )}
+    </Stack.Navigator>
+  );
+};
+
+export default RootNavigator;

interfaces/nativeapp/src/navigation/WebAppLayout.tsx

@@ -0,0 +1,80 @@
+// src/navigation/WebAppLayout.tsx
+import React, { useRef, useState, useEffect } from 'react';
+import { View, StyleSheet } from 'react-native';
+import {
+    NavigationContainer,
+    NavigationContainerRef, // Correct type for ref
+    DefaultTheme as NavigationDefaultTheme,
+    DarkTheme as NavigationDarkTheme,
+    NavigationIndependentTree
+} from '@react-navigation/native';
+
+import WebSidebar from '../components/WebSidebar';
+import WebContentNavigator from './WebContentNavigator';
+import theme from '../constants/theme'; // Your Paper theme
+import { WebContentStackParamList, WebContentNavigationProp } from '../types/navigation'; // Import correct types
+
+// Combine Paper theme with Navigation theme
+export const CombinedDarkTheme = {
+    ...NavigationDarkTheme,
+    ...theme,
+    colors: {
+      ...NavigationDarkTheme.colors,
+      ...theme.colors,
+      card: theme.colors.surface,
+      border: theme.colors.surface,
+      text: theme.colors.text,
+      primary: theme.colors.primary,
+      background: theme.colors.background,
+    },
+};
+
+
+const WebAppLayout = () => {
+    // Use the specific ref type
+    const navigationRef = useRef<WebContentNavigationProp>(null);
+    const [currentWebRoute, setCurrentWebRoute] = useState<string | undefined>(undefined);
+
+     const handleWebNavigationReady = () => {
+        setCurrentWebRoute(navigationRef.current?.getCurrentRoute()?.name);
+    };
+    const handleWebNavigationStateChange = () => {
+        const currentRoute = navigationRef.current?.getCurrentRoute();
+        if (currentRoute) {
+            setCurrentWebRoute(currentRoute.name);
+        }
+    };
+
+    const styles = StyleSheet.create({
+        webContainer: {
+            flex: 1,
+            flexDirection: 'row',
+            height: '100vh', // Full viewport height for web
+            backgroundColor: theme.colors.background,
+        },
+        contentArea: {
+            flex: 1, // Content takes remaining space
+            height: '100%',
+        },
+    });
+
+    return (
+        <View style={styles.webContainer}>
+           <WebSidebar navigationRef={navigationRef} currentRouteName={currentWebRoute} />
+           <View style={styles.contentArea}>
+            <NavigationIndependentTree>
+               <NavigationContainer
+                   ref={navigationRef}
+                   theme={CombinedDarkTheme}
+                   onReady={handleWebNavigationReady}
+                   onStateChange={handleWebNavigationStateChange}
+               >
+                   <WebContentNavigator />
+               </NavigationContainer>
+            </NavigationIndependentTree>
+           </View>
+       </View>
+   )
+}
+
+export default WebAppLayout;

interfaces/nativeapp/src/navigation/WebContentNavigator.tsx

@@ -0,0 +1,45 @@
+// src/navigation/WebContentNavigator.tsx
+import React from 'react';
+import { createNativeStackNavigator } from '@react-navigation/native-stack';
+import { useTheme } from 'react-native-paper';
+
+import DashboardScreen from '../screens/DashboardScreen';
+import ChatScreen from '../screens/ChatScreen';
+import CalendarScreen from '../screens/CalendarScreen';
+import ProfileScreen from '../screens/ProfileScreen';
+
+import { WebContentStackParamList } from '../types/navigation';
+
+const Stack = createNativeStackNavigator<WebContentStackParamList>();
+
+const WebContentNavigator = () => {
+  const theme = useTheme();
+
+  return (
+    <Stack.Navigator
+      initialRouteName="Dashboard"
+      screenOptions={{
+        headerStyle: {
+          backgroundColor: theme.colors.surface,
+        },
+        headerTintColor: theme.colors.text,
+        headerTitleStyle: {
+          fontWeight: 'bold',
+        },
+        contentStyle: {
+          backgroundColor: theme.colors.background,
+        },
+        // Keep headers visible within the content area
+        headerShown: true,
+      }}
+    >
+      <Stack.Screen name="Dashboard" component={DashboardScreen} options={{ title: 'MAIA Dashboard' }}/>
+      <Stack.Screen name="Chat" component={ChatScreen} options={{ title: 'MAIA Chat' }}/>
+      <Stack.Screen name="Calendar" component={CalendarScreen} />
+      <Stack.Screen name="Profile" component={ProfileScreen} />
+      {/* Add other detail screens here if needed */}
+    </Stack.Navigator>
+  );
+};
+
+export default WebContentNavigator;

interfaces/nativeapp/src/screens/CalendarScreen.tsx

@@ -0,0 +1,321 @@
+// src/screens/CalendarScreen.tsx
+import React, { useState, useEffect, useMemo, useCallback } from 'react';
+import { View, StyleSheet, FlatList } from 'react-native';
+import { Calendar, DateData, LocaleConfig, CalendarProps, MarkingProps } from 'react-native-calendars'; // Import MarkingProps
+import { Text, useTheme, ActivityIndicator, List, Divider } from 'react-native-paper';
+import {
+    format,
+    parseISO,
+    startOfMonth,
+    endOfMonth, // Need endOfMonth
+    getYear,
+    getMonth,
+    eachDayOfInterval, // Crucial for period marking
+    isSameDay, // Helper for comparisons
+    isValid, // Check if dates are valid
+} from 'date-fns';
+
+import { getCalendarEvents } from '../api/calendar';
+import { CalendarEvent } from '../types/calendar'; // Use updated type
+
+// Optional: Configure locale
+// LocaleConfig.locales['en'] = { ... }; LocaleConfig.defaultLocale = 'en';
+
+const getTodayDateString = () => format(new Date(), 'yyyy-MM-dd');
+
+const CalendarScreen = () => {
+    const theme = useTheme();
+    const todayString = useMemo(getTodayDateString, []);
+
+    const [selectedDate, setSelectedDate] = useState<string>(todayString);
+    const [currentMonthData, setCurrentMonthData] = useState<DateData | null>(null);
+
+    // Store events fetched from API *directly*
+    // We process them for marking and display separately
+    const [rawEvents, setRawEvents] = useState<CalendarEvent[]>([]);
+    // Store events keyed by date *for the list display*
+    const [eventsByDate, setEventsByDate] = useState<{ [key: string]: CalendarEvent[] }>({});
+
+    const [isLoading, setIsLoading] = useState<boolean>(false);
+    const [error, setError] = useState<string | null>(null);
+
+    // --- Fetching Logic ---
+    const fetchEventsForMonth = useCallback(async (date: Date | DateData) => {
+        setIsLoading(true);
+        setError(null);
+        const targetYear = 'year' in date ? date.year : getYear(date);
+        const targetMonth = 'month' in date ? date.month : getMonth(date) + 1;
+
+        if (isLoading && currentMonthData?.year === targetYear && currentMonthData?.month === targetMonth) {
+            return;
+        }
+         if ('dateString' in date) {
+            setCurrentMonthData(date);
+         } else {
+             // If called with Date, create approximate DateData
+             const dateObj = date instanceof Date ? date : new Date(date.timestamp);
+             setCurrentMonthData({
+                 year: targetYear,
+                 month: targetMonth,
+                 dateString: format(dateObj, 'yyyy-MM-dd'),
+                 day: dateObj.getDate(),
+                 timestamp: dateObj.getTime(),
+             });
+         }
+
+        try {
+            console.log(`Fetching events potentially overlapping ${targetYear}-${targetMonth}`);
+            const fetchedEvents = await getCalendarEvents(targetYear, targetMonth);
+            setRawEvents(fetchedEvents); // Store the raw events for period marking
+
+            // Process events for the daily list view
+            const newEventsByDate: { [key: string]: CalendarEvent[] } = {};
+            fetchedEvents.forEach(event => {
+                const startDate = parseISO(event.start);
+                const endDate = parseISO(event.end);
+
+                if (!isValid(startDate) || !isValid(endDate)) {
+                    console.warn(`Invalid date found in event ${event.id}`);
+                    return; // Skip invalid events
+                }
+
+                // Ensure end date is not before start date
+                 const end = endDate < startDate ? startDate : endDate;
+
+                const intervalDates = eachDayOfInterval({ start: startDate, end: end });
+                intervalDates.forEach(dayInInterval => {
+                    const dateKey = format(dayInInterval, 'yyyy-MM-dd');
+                    if (!newEventsByDate[dateKey]) {
+                        newEventsByDate[dateKey] = [];
+                    }
+                     // Avoid duplicates if an event is already added for this key
+                     if (!newEventsByDate[dateKey].some(e => e.id === event.id)) {
+                         newEventsByDate[dateKey].push(event);
+                     }
+                });
+            });
+            setEventsByDate(newEventsByDate); // Update state for list view
+
+        } catch (err) {
+            setError('Failed to load calendar events.');
+            setRawEvents([]); // Clear events on error
+            setEventsByDate({});
+            console.error(err);
+        } finally {
+            setIsLoading(false);
+        }
+    }, [isLoading, currentMonthData]); // Include dependencies
+
+    // --- Initial Fetch ---
+    useEffect(() => {
+        const initialDate = parseISO(todayString);
+        fetchEventsForMonth(initialDate);
+    }, [fetchEventsForMonth, todayString]);
+
+    // --- Callbacks for Calendar ---
+    const onDayPress = useCallback((day: DateData) => {
+        setSelectedDate(day.dateString);
+    }, []);
+
+    const onMonthChange = useCallback((month: DateData) => {
+        if (!currentMonthData || month.year !== currentMonthData.year || month.month !== currentMonthData.month) {
+           fetchEventsForMonth(month);
+       } else {
+            setCurrentMonthData(month); // Just update the current data if same month
+       }
+    }, [fetchEventsForMonth, currentMonthData]);
+
+    // --- Calculate Marked Dates (Period Marking) ---
+    const markedDates = useMemo(() => {
+        const marks: { [key: string]: MarkingProps } = {}; // Use MarkingProps type
+
+        rawEvents.forEach(event => {
+            const startDate = parseISO(event.start);
+            const endDate = parseISO(event.end);
+            const eventColor = event.color || theme.colors.primary; // Use event color or default
+
+            if (!isValid(startDate) || !isValid(endDate)) {
+                return; // Skip invalid events
+            }
+
+            // Ensure end date is not before start date
+            const end = endDate < startDate ? startDate : endDate;
+
+            const intervalDates = eachDayOfInterval({ start: startDate, end: end });
+
+            intervalDates.forEach((dateInInterval, index) => {
+                const dateString = format(dateInInterval, 'yyyy-MM-dd');
+                const isStartingDay = index === 0;
+                const isEndingDay = index === intervalDates.length - 1;
+
+                const marking: MarkingProps = {
+                    color: eventColor,
+                    textColor: theme.colors.onPrimary || '#ffffff', // Text color within the period mark
+                };
+
+                if (isStartingDay) {
+                    marking.startingDay = true;
+                }
+                if (isEndingDay) {
+                    marking.endingDay = true;
+                }
+                // Handle single-day events (both start and end)
+                if (intervalDates.length === 1) {
+                    marking.startingDay = true;
+                    marking.endingDay = true;
+                }
+
+                // Merge markings if multiple events overlap on the same day
+                marks[dateString] = {
+                    ...(marks[dateString] || {}), // Keep existing marks
+                    ...marking,
+                    // Ensure start/end flags aren't overwritten by non-start/end marks
+                    startingDay: marks[dateString]?.startingDay || marking.startingDay,
+                    endingDay: marks[dateString]?.endingDay || marking.endingDay,
+                    // We might need a more complex strategy if multiple periods
+                    // with different colors overlap on the same day.
+                    // For now, the last event processed might "win" the color.
+                };
+            });
+        });
+
+        // Add selected day marking (merge with period marking)
+        if (selectedDate) {
+            marks[selectedDate] = {
+                ...(marks[selectedDate] || {}), // Keep existing period/dot marks
+                selected: true,
+                // Keep the period color if it exists, otherwise use selection color
+                color: marks[selectedDate]?.color || theme.colors.primary, // Period wins color? or selection? Choose one. Here period wins.
+                // selectedColor: theme.colors.secondary, // Or use a distinct selection highlight color?
+                // Ensure text color is appropriate for selected state
+                textColor: theme.colors.onPrimary || '#ffffff',
+                 // If selected, don't let it look like starting/ending unless it truly is
+                 startingDay: marks[selectedDate]?.startingDay && marks[selectedDate]?.selected,
+                 endingDay: marks[selectedDate]?.endingDay && marks[selectedDate]?.selected,
+            };
+        }
+
+        // Add today marking (merge with period/selection marking)
+        // Period marking visually indicates today already if colored. Add dot?
+         marks[todayString] = {
+             ...(marks[todayString] || {}),
+             // marked: true, // 'marked' is implicit with period marking color
+             dotColor: theme.colors.secondary, // Add a distinct dot for today?
+             // Or rely on the 'todayTextColor' in the theme prop
+         };
+
+        return marks;
+    }, [rawEvents, selectedDate, theme.colors, theme.dark, todayString]); // Include theme.dark if colors change
+
+    // --- Render Event Item ---
+    const renderEventItem = ({ item }: { item: CalendarEvent }) => {
+        const startDate = parseISO(item.start);
+        const endDate = parseISO(item.end);
+        let description = item.description || '';
+        if (isValid(startDate)) {
+            // Show date range if it spans multiple days or specific time if single day
+            if (!isSameDay(startDate, endDate)) {
+                 description = `${format(startDate, 'MMM d')} - ${format(endDate, 'MMM d')}${item.description ? `\n${item.description}` : ''}`;
+            } else {
+                 description = `Time: ${format(startDate, 'p')}${item.description ? `\n${item.description}` : ''}`; // 'p' is locale-specific time format
+            }
+        }
+
+        return (
+            <List.Item
+                title={item.title}
+                description={description}
+                left={props => <List.Icon {...props} icon="circle-slice-8" color={item.color || theme.colors.primary} />} // Use a filled circle or similar
+                style={styles.eventItem}
+                titleStyle={{ color: theme.colors.text }}
+                descriptionStyle={{ color: theme.colors.textSecondary }}
+                descriptionNumberOfLines={3} // Allow more lines for range/details
+            />
+        );
+    }
+
+    // --- Styles ---
+    const styles = StyleSheet.create({
+        container: { flex: 1, backgroundColor: theme.colors.background },
+        calendar: { /* ... */ },
+        loadingContainer: { height: 100, justifyContent: 'center', alignItems: 'center' },
+        eventListContainer: { flex: 1, paddingHorizontal: 16, paddingTop: 10 },
+        eventListHeader: { fontSize: 16, fontWeight: 'bold', color: theme.colors.text, marginBottom: 10, marginTop: 10 },
+        eventItem: { backgroundColor: theme.colors.surface, marginBottom: 8, borderRadius: theme.roundness },
+        noEventsText: { textAlign: 'center', marginTop: 20, color: theme.colors.textSecondary, fontSize: 16 },
+        errorText: { textAlign: 'center', marginTop: 20, color: theme.colors.error, fontSize: 16 },
+    });
+
+    // --- Calendar Theme ---
+    const calendarTheme: CalendarProps['theme'] = { // Use CalendarProps['theme'] for stricter typing
+        backgroundColor: theme.colors.background,
+        calendarBackground: theme.colors.surface,
+        textSectionTitleColor: theme.colors.primary,
+        selectedDayBackgroundColor: theme.colors.secondary, // Make selection distinct?
+        selectedDayTextColor: theme.colors.background, // Text on selection
+        todayTextColor: theme.colors.secondary, // Today's date number color
+        dayTextColor: theme.colors.text,
+        textDisabledColor: theme.colors.disabled,
+        dotColor: theme.colors.secondary, // Color for the explicit 'today' dot
+        selectedDotColor: theme.colors.primary,
+        arrowColor: theme.colors.primary,
+        monthTextColor: theme.colors.text,
+        indicatorColor: theme.colors.primary,
+        textDayFontWeight: '300',
+        textMonthFontWeight: 'bold',
+        textDayHeaderFontWeight: '500',
+        textDayFontSize: 16,
+        textMonthFontSize: 18,
+        textDayHeaderFontSize: 14,
+        // Period marking text color is handled by 'textColor' within the mark itself
+        'stylesheet.calendar.header': { // Example of deeper theme customization if needed
+            week: {
+                marginTop: 5,
+                flexDirection: 'row',
+                justifyContent: 'space-around'
+            }
+        }
+    };
+
+    // Get events for the *selected* date from the processed map
+    const eventsForSelectedDate = eventsByDate[selectedDate] || [];
+
+    return (
+        <View style={styles.container}>
+            <Calendar
+                key={theme.dark ? 'dark-calendar-period' : 'light-calendar-period'} // Change key if theme changes
+                style={styles.calendar}
+                theme={calendarTheme}
+                current={format(currentMonthData ? new Date(currentMonthData.timestamp) : new Date(), 'yyyy-MM-dd')} // Ensure current reflects viewed month
+                onDayPress={onDayPress}
+                onMonthChange={onMonthChange}
+                markedDates={markedDates}
+                markingType={'period'} // *** SET MARKING TYPE TO PERIOD ***
+                firstDay={1} // Optional: Start week on Monday
+            />
+
+            {isLoading && <ActivityIndicator animating={true} color={theme.colors.primary} size="large" style={styles.loadingContainer} />}
+            {error && !isLoading && <Text style={styles.errorText}>{error}</Text>}
+
+            {!isLoading && !error && (
+                <View style={styles.eventListContainer}>
+                    <Text style={styles.eventListHeader}>
+                        Events for {selectedDate === todayString ? 'Today' : format(parseISO(selectedDate), 'MMMM d, yyyy')}
+                    </Text>
+                    {eventsForSelectedDate.length > 0 ? (
+                        <FlatList
+                            data={eventsForSelectedDate}
+                            renderItem={renderEventItem}
+                            keyExtractor={(item) => item.id + item.start} // Key needs to be unique if event appears on multiple days in list potentially
+                            ItemSeparatorComponent={() => <View style={{ height: 5 }} />}
+                        />
+                    ) : (
+                        <Text style={styles.noEventsText}>No events scheduled for this day.</Text>
+                    )}
+                </View>
+            )}
+        </View>
+    );
+};
+
+export default CalendarScreen;

interfaces/nativeapp/src/screens/ChatScreen.tsx

@@ -0,0 +1,19 @@
+// src/screens/DashboardScreen.tsx
+import React from 'react';
+import { View, StyleSheet } from 'react-native';
+import { Text, useTheme } from 'react-native-paper';
+
+const DashboardScreen = () => {
+  const theme = useTheme();
+  const styles = StyleSheet.create({
+    container: { flex: 1, alignItems: 'center', justifyContent: 'center', padding: 16, backgroundColor: theme.colors.background },
+    text: { fontSize: 20, color: theme.colors.text }
+  });
+  return (
+    <View style={styles.container}>
+      <Text style={styles.text}>Chat</Text>
+    </View>
+  );
+};
+
+export default DashboardScreen;

interfaces/nativeapp/src/screens/DashboardScreen.tsx

@@ -0,0 +1,19 @@
+// src/screens/DashboardScreen.tsx
+import React from 'react';
+import { View, StyleSheet } from 'react-native';
+import { Text, useTheme } from 'react-native-paper';
+
+const DashboardScreen = () => {
+  const theme = useTheme();
+  const styles = StyleSheet.create({
+    container: { flex: 1, alignItems: 'center', justifyContent: 'center', padding: 16, backgroundColor: theme.colors.background },
+    text: { fontSize: 20, color: theme.colors.text }
+  });
+  return (
+    <View style={styles.container}>
+      <Text style={styles.text}>Dashboard</Text>
+    </View>
+  );
+};
+
+export default DashboardScreen;

interfaces/nativeapp/src/screens/LoginScreen.tsx

@@ -0,0 +1,135 @@
+// src/screens/LoginScreen.tsx
+import React, { useState } from 'react';
+import { View, StyleSheet, KeyboardAvoidingView, Platform } from 'react-native';
+import { TextInput, Button, Text, useTheme, HelperText, ActivityIndicator, Avatar } from 'react-native-paper';
+import { useAuth } from '../contexts/AuthContext';
+
+const LoginScreen = () => {
+  const theme = useTheme();
+  const { login } = useAuth();
+  const [username, setUsername] = useState('');
+  const [password, setPassword] = useState('');
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  const handleLogin = async () => {
+    console.log("[LoginScreen] handleLogin: Button pressed."); // Log: Button Press
+    if (!username || !password) {
+      console.log("[LoginScreen] handleLogin: Missing username or password.");
+      setError('Please enter both username/email and password.');
+      return;
+    }
+    setError(null);
+    setIsLoading(true);
+    try {
+      // --- Add Log Here ---
+      console.log("[LoginScreen] handleLogin: Calling context login function...");
+      await login(username, password);
+      console.log("[LoginScreen] handleLogin: Context login function call finished (likely successful navigation).");
+      // If successful, this component might unmount before this log appears fully.
+    } catch (err: any) {
+        console.log("[LoginScreen] handleLogin: Caught error from context login."); // Log: Error caught
+        const errorMessage = err.response?.data?.detail ||
+                             err.response?.data?.message ||
+                             err.message ||
+                             'Login failed. Please check your credentials.';
+       setError(errorMessage);
+       // **Important**: Set loading false *only in the catch block* if navigation doesn't happen
+       setIsLoading(false);
+       console.log("[LoginScreen] handleLogin: Set loading to false after error.");
+    }
+    // **Remove potential premature setIsLoading(false) if it was outside the catch block**
+  };
+
+  const styles = StyleSheet.create({
+    container: {
+      flex: 1,
+      justifyContent: 'center',
+      padding: 20,
+      backgroundColor: theme.colors.background,
+    },
+    logoContainer: {
+        alignItems: 'center',
+        marginBottom: 40,
+    },
+    title: {
+      fontSize: 24,
+      fontWeight: 'bold',
+      textAlign: 'center',
+      marginBottom: 20,
+      color: theme.colors.primary,
+    },
+    input: {
+      marginBottom: 15,
+    },
+    button: {
+      marginTop: 10,
+      paddingVertical: 8, // Make button taller
+    },
+    errorText: {
+      // Use HelperText's styling by setting type='error'
+      textAlign: 'center',
+      marginBottom: 10,
+    },
+    loadingContainer: {
+        marginTop: 20,
+    }
+  });
+
+  return (
+    <KeyboardAvoidingView
+      behavior={Platform.OS === "ios" ? "padding" : "height"}
+      style={styles.container}
+    >
+        <View style={styles.logoContainer}>
+            <Avatar.Image
+                size={100}
+                source={require('../assets/MAIA_ICON.png')}
+            />
+        </View>
+      <Text style={styles.title}>MAIA Login</Text>
+      <TextInput
+        label="Username"
+        value={username}
+        onChangeText={setUsername}
+        mode="outlined"
+        style={styles.input}
+        autoCapitalize="none"
+        disabled={isLoading}
+      />
+      <TextInput
+        label="Password"
+        value={password}
+        onChangeText={setPassword}
+        mode="outlined"
+        style={styles.input}
+        secureTextEntry // Hides password input
+        disabled={isLoading}
+      />
+
+      {/* Display Error Message */}
+       <HelperText type="error" visible={!!error} style={styles.errorText}>
+         {error}
+       </HelperText>
+
+      {/* Show loading indicator inline with button or replace it */}
+      {isLoading ? (
+          <ActivityIndicator animating={true} color={theme.colors.primary} style={styles.loadingContainer}/>
+      ) : (
+          <Button
+            mode="contained"
+            onPress={handleLogin}
+            style={styles.button}
+            disabled={isLoading} // Disable button while loading
+            icon="login"
+         >
+            Login
+          </Button>
+      )}
+
+      {/* TODO: Add Register here */}
+    </KeyboardAvoidingView>
+  );
+};
+
+export default LoginScreen;

interfaces/nativeapp/src/screens/ProfileScreen.tsx

@@ -0,0 +1,19 @@
+// src/screens/DashboardScreen.tsx
+import React from 'react';
+import { View, StyleSheet } from 'react-native';
+import { Text, useTheme } from 'react-native-paper';
+
+const DashboardScreen = () => {
+  const theme = useTheme();
+  const styles = StyleSheet.create({
+    container: { flex: 1, alignItems: 'center', justifyContent: 'center', padding: 16, backgroundColor: theme.colors.background },
+    text: { fontSize: 20, color: theme.colors.text }
+  });
+  return (
+    <View style={styles.container}>
+      <Text style={styles.text}>Profile</Text>
+    </View>
+  );
+};
+
+export default DashboardScreen;

interfaces/nativeapp/src/types/calendar.ts

@@ -0,0 +1,10 @@
+// src/types/calendar.ts
+
+export interface CalendarEvent {
+    id: number;
+    title: string;
+    description: string;
+    start: string;
+    end: string;
+    location: string;
+}

interfaces/nativeapp/src/types/navigation.ts

@@ -0,0 +1,32 @@
+// src/types/navigation.ts
+
+// Screens within the main Mobile Bottom Tab Navigator
+export type MobileTabParamList = {
+    DashboardTab: undefined;
+    ChatTab: undefined;
+    CalendarTab: undefined;
+    ProfileTab: undefined;
+};
+  
+// Screens within the Web Content Area Stack Navigator
+export type WebContentStackParamList = {
+    Dashboard: undefined;
+    Chat: undefined;
+    Calendar: undefined;
+    Profile: undefined;
+};
+
+// Screens managed by the Root Navigator (Auth vs App)
+export type RootStackParamList = {
+    AuthFlow: undefined; // Represents the stack for unauthenticated users
+    AppFlow: undefined;  // Represents the stack/layout for authenticated users
+};
+
+// Screens within the Authentication Flow
+export type AuthStackParamList = {
+    Login: undefined;
+    // Example: SignUp: undefined; ForgotPassword: undefined;
+};
+  
+// Type for the ref used in WebAppLayout
+export type WebContentNavigationProp = NavigationContainerRef<WebContentStackParamList>;

interfaces/nativeapp/tsconfig.json

@@ -0,0 +1,6 @@
+{
+  "extends": "expo/tsconfig.base",
+  "compilerOptions": {
+    "strict": true
+  }
+}