Add new screens for game management, team management, and cache handling; implement caching logic and session management

src/hooks/useAuthHook.js

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+import {useState} from 'react';
+import Constants from 'expo-constants';
+import dbController from './DbController';
+import {clearSession, setSessionUser} from './SessionStore';
+
+const hostFromExpo = Constants.expoConfig?.hostUri?.split(':')[0] || null;
+const apiBaseUrl = process.env.EXPO_PUBLIC_API_BASE_URL || (hostFromExpo ? `http://${hostFromExpo}:3000` : 'http://localhost:3000');
+
+const postJson = async (path, payload) => {
+  const response = await fetch(`${apiBaseUrl}${path}`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify(payload),
+  });
+  const result = await response.json();
+  if (!response.ok) {
+    throw new Error(result.message || 'Request failed');
+  }
+  return result;
+};
+
+const useAuthHook = () => {
+  const [email, setEmail] = useState('');
+  const [password, setPassword] = useState('');
+  const [username, setUsername] = useState('');
+  const [confirmPassword, setConfirmPassword] = useState('');
+  const [accountType, setAccountType] = useState('Individual');
+  const [error, setError] = useState('');
+  const [isLoading, setIsLoading] = useState(false);
+
+  const login = async () => {
+    setError('');
+    setIsLoading(true);
+    try {
+      const user = await postJson('/auth/login', { email: email.trim(), password });
+      setSessionUser(user);
+      setIsLoading(false);
+      return user;
+    } catch (e) {
+      try {
+        const fallbackUser = dbController.login({ email: email.trim(), password });
+        setSessionUser(fallbackUser);
+        setIsLoading(false);
+        return fallbackUser;
+      } catch {
+        setError(e.message);
+        setIsLoading(false);
+        return null;
+      }
+    }
+  };
+
+  const register = async () => {
+    setError('');
+    setIsLoading(true);
+    try {
+      const user = await postJson('/auth/register', {
+        username: username.trim(),
+        email: email.trim().toLowerCase(),
+        password,
+        confirmPassword,
+        accountType,
+      });
+      setSessionUser(user);
+      setIsLoading(false);
+      return user;
+    } catch (e) {
+      try {
+        const fallbackUser = dbController.register({
+          username: username.trim(),
+          email: email.trim().toLowerCase(),
+          password,
+          confirmPassword,
+          accountType,
+        });
+        setSessionUser(fallbackUser);
+        setIsLoading(false);
+        return fallbackUser;
+      } catch {
+        setError(e.message);
+        setIsLoading(false);
+        return null;
+      }
+    }
+  };
+
+  const logout = () => {
+    clearSession();
+    setEmail('');
+    setPassword('');
+    setUsername('');
+    setConfirmPassword('');
+    setAccountType('Individual');
+    setError('');
+  };
+
+  return {
+    email,
+    password,
+    username,
+    confirmPassword,
+    accountType,
+    error,
+    isLoading,
+    setEmail,
+    setPassword,
+    setUsername,
+    setConfirmPassword,
+    setAccountType,
+    login,
+    register,
+    logout,
+  };
+};
+
+export default useAuthHook;
+