reset mobile context caches on user identity changes

apps/mobile/jest.setup.js

@@ -1,11 +1,19 @@
-import 'react-native-gesture-handler/jestSetup'
+try {
+  require("react-native-gesture-handler/jestSetup");
+} catch {
+  // Package may be absent in minimal test environments
+}
 
-jest.mock('react-native-reanimated', () => {
+jest.mock(
-  const Reanimated = require('react-native-reanimated/mock')
+  "react-native-reanimated",
-  Reanimated.default.call = () => {}
+  () => {
-  return Reanimated
+    const Reanimated = require("react-native-reanimated/mock");
-})
+    Reanimated.default.call = () => {};
+    return Reanimated;
+  },
+  { virtual: true },
+);
 
-jest.mock('@expo/vector-icons', () => ({
+jest.mock("@expo/vector-icons", () => ({
-  Ionicons: 'Ionicons',
+  Ionicons: "Ionicons",
-}))
+}));

apps/mobile/src/api/__tests__/gyms.test.ts

@@ -0,0 +1,55 @@
+import { beforeEach, describe, expect, it, jest } from "@jest/globals";
+import { gymsApi } from "../gyms";
+import { apiClient, withAuth } from "../client";
+
+jest.mock("../client", () => ({
+  apiClient: {
+    get: jest.fn(),
+    patch: jest.fn(),
+  },
+  withAuth: jest.fn((token?: string | null) =>
+    token ? { headers: { Authorization: `Bearer ${token}` } } : {},
+  ),
+}));
+
+describe("gymsApi", () => {
+  const getMock = apiClient.get as any;
+  const patchMock = apiClient.patch as any;
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("returns array payload from getGyms", async () => {
+    getMock.mockResolvedValue({
+      data: [{ id: "gym_1", name: "Gym One" }],
+    });
+
+    const result = await gymsApi.getGyms("token_1");
+
+    expect(result).toEqual([{ id: "gym_1", name: "Gym One" }]);
+    expect(withAuth).toHaveBeenCalledWith("token_1");
+  });
+
+  it("returns nested data payload from getGyms", async () => {
+    getMock.mockResolvedValue({
+      data: { data: [{ id: "gym_2", name: "Gym Two" }] },
+    });
+
+    const result = await gymsApi.getGyms(null);
+
+    expect(result).toEqual([{ id: "gym_2", name: "Gym Two" }]);
+  });
+
+  it("patches selected gym for current user", async () => {
+    patchMock.mockResolvedValue({});
+
+    await gymsApi.updateUserGym("gym_2", "token_2");
+
+    expect(apiClient.patch).toHaveBeenCalledWith(
+      "/api/users/gym",
+      { gymId: "gym_2" },
+      expect.any(Object),
+    );
+  });
+});

apps/mobile/src/api/__tests__/recommendations.test.ts

@@ -0,0 +1,68 @@
+import { beforeEach, describe, expect, it, jest } from "@jest/globals";
+import {
+  approveRecommendation,
+  generateRecommendation,
+  getRecommendations,
+} from "../recommendations";
+import { apiClient, withAuth } from "../client";
+
+jest.mock("../client", () => ({
+  apiClient: {
+    get: jest.fn(),
+    post: jest.fn(),
+  },
+  withAuth: jest.fn((token?: string | null) =>
+    token ? { headers: { Authorization: `Bearer ${token}` } } : {},
+  ),
+}));
+
+describe("recommendations api", () => {
+  const getMock = apiClient.get as any;
+  const postMock = apiClient.post as any;
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it("returns normalized list from standardized response", async () => {
+    getMock.mockResolvedValue({
+      data: {
+        success: true,
+        data: [{ id: "rec_1", status: "pending" }],
+      },
+    });
+
+    const result = await getRecommendations("user_1", "token_1");
+
+    expect(result).toEqual([{ id: "rec_1", status: "pending" }]);
+    expect(withAuth).toHaveBeenCalledWith("token_1");
+  });
+
+  it("falls back to legacy response for generate", async () => {
+    postMock.mockResolvedValue({
+      data: { id: "rec_2", status: "pending" },
+    });
+
+    const result = await generateRecommendation({ userId: "user_1" }, null);
+
+    expect(result).toEqual({ id: "rec_2", status: "pending" });
+  });
+
+  it("sends approval payload without approvedBy", async () => {
+    postMock.mockResolvedValue({
+      data: {
+        success: true,
+        data: { id: "rec_3", status: "approved" },
+      },
+    });
+
+    const result = await approveRecommendation("rec_3", "token_3");
+
+    expect(result).toEqual({ id: "rec_3", status: "approved" });
+    expect(apiClient.post).toHaveBeenCalledWith(
+      "/api/recommendations/approve",
+      { recommendationId: "rec_3", status: "approved" },
+      expect.any(Object),
+    );
+  });
+});

apps/mobile/src/api/client.ts

@@ -1,18 +1,52 @@
-import axios from 'axios';
+import axios, { type AxiosRequestConfig } from "axios";
-import { API_BASE_URL } from '../config/api';
+import { API_BASE_URL } from "../config/api";
+import log from "../utils/logger";
 
 export const apiClient = axios.create({
-    baseURL: API_BASE_URL,
+  baseURL: API_BASE_URL,
-    headers: {
+  timeout: 15000,
-        'Content-Type': 'application/json',
+  headers: {
-    },
+    "Content-Type": "application/json",
+  },
 });
 
+apiClient.interceptors.response.use(
+  (response) => response,
+  (error) => {
+    if (axios.isAxiosError(error)) {
+      const status = error.response?.status;
+      if (status === 401) {
+        log.warn("API unauthorized response", { url: error.config?.url });
+      } else if (status === 403) {
+        log.warn("API forbidden response", { url: error.config?.url });
+      } else if (status && status >= 500) {
+        log.error("API server error", error, {
+          status,
+          url: error.config?.url,
+        });
+      }
+    }
+    return Promise.reject(error);
+  },
+);
+
+export function withAuth(token?: string | null): AxiosRequestConfig {
+  if (!token) {
+    return {};
+  }
+
+  return {
+    headers: {
+      Authorization: `Bearer ${token}`,
+    },
+  };
+}
+
 // Helper to set the auth token for a request
 export const setAuthToken = (token: string) => {
-    if (token) {
+  if (token) {
-        apiClient.defaults.headers.common['Authorization'] = `Bearer ${token}`;
+    apiClient.defaults.headers.common.Authorization = `Bearer ${token}`;
-    } else {
+  } else {
-        delete apiClient.defaults.headers.common['Authorization'];
+    delete apiClient.defaults.headers.common.Authorization;
-    }
+  }
 };

apps/mobile/src/api/gyms.ts

@@ -0,0 +1,56 @@
+import { isAxiosError } from "axios";
+import { API_ENDPOINTS } from "../config/api";
+import { apiClient, withAuth } from "./client";
+
+export interface Gym {
+  id: string;
+  name: string;
+  location?: string;
+}
+
+export const gymsApi = {
+  getGyms: async (token: string | null): Promise<Gym[]> => {
+    try {
+      const response = await apiClient.get<Gym[] | { data?: Gym[] }>(
+        API_ENDPOINTS.GYMS,
+        withAuth(token),
+      );
+
+      const payload = response.data;
+      if (Array.isArray(payload)) {
+        return payload;
+      }
+
+      if (payload && Array.isArray(payload.data)) {
+        return payload.data;
+      }
+
+      return [];
+    } catch (error) {
+      if (isAxiosError(error) && error.response) {
+        throw new Error(`Failed to fetch gyms: ${error.response.status}`);
+      }
+      throw new Error("Failed to fetch gyms");
+    }
+  },
+
+  updateUserGym: async (
+    gymId: string | null,
+    token: string | null,
+  ): Promise<void> => {
+    try {
+      await apiClient.patch(
+        API_ENDPOINTS.USERS.GYM,
+        { gymId },
+        withAuth(token),
+      );
+    } catch (error) {
+      if (isAxiosError(error) && error.response) {
+        throw new Error(
+          `Failed to update gym selection: ${error.response.status}`,
+        );
+      }
+      throw new Error("Failed to update gym selection");
+    }
+  },
+};

apps/mobile/src/api/index.ts

@@ -13,3 +13,4 @@ export * from "./recommendations";
 export * from "./nutrition";
 export * from "./hydration";
 export * from "./client";
+export * from "./gyms";

apps/mobile/src/api/notifications.ts

@@ -1,4 +1,5 @@
-import { API_BASE_URL } from "../config/api";
+import { isAxiosError } from "axios";
+import { apiClient, withAuth } from "./client";
 
 export interface Notification {
   id: string;
@@ -25,66 +26,49 @@ interface ApiResponse<T> {
 export async function fetchNotifications(
   token: string | null,
 ): Promise<Notification[]> {
-  const headers: Record<string, string> = {
+  try {
-    "Content-Type": "application/json",
+    const response = await apiClient.get<ApiResponse<Notification[]>>(
-  };
+      "/api/notifications",
-
+      withAuth(token),
-  if (token) {
-    headers["Authorization"] = `Bearer ${token}`;
-  }
-
-  const response = await fetch(`${API_BASE_URL}/api/notifications`, {
-    method: "GET",
-    headers,
-  });
-
-  if (!response.ok) {
-    const errorText = await response.text();
-    throw new Error(
-      `Failed to fetch notifications: ${response.status} - ${errorText}`,
     );
+
+    const result = response.data;
+
+    if (result.success && result.data) {
+      return result.data.map((notification) => ({
+        ...notification,
+        createdAt: new Date(notification.createdAt),
+      }));
+    }
+
+    return [];
+  } catch (error) {
+    if (isAxiosError(error) && error.response) {
+      throw new Error(
+        `Failed to fetch notifications: ${error.response.status}`,
+      );
+    }
+    throw new Error("Failed to fetch notifications");
   }
-
-  const result: ApiResponse<Notification[]> = await response.json();
-
-  if (result.success && result.data) {
-    // Convert date strings to Date objects
-    return result.data.map((notification) => ({
-      ...notification,
-      createdAt: new Date(notification.createdAt),
-    }));
-  }
-
-  return [];
 }
 
 /**
  * Get unread notification count
  */
 export async function fetchUnreadCount(token: string | null): Promise<number> {
-  const headers: Record<string, string> = {
+  try {
-    "Content-Type": "application/json",
+    const response = await apiClient.get<ApiResponse<{ count: number }>>(
-  };
+      "/api/notifications/unread-count",
-
+      withAuth(token),
-  if (token) {
+    );
-    headers["Authorization"] = `Bearer ${token}`;
+    const result = response.data;
+    return result.success && result.data ? result.data.count : 0;
+  } catch (error) {
+    if (isAxiosError(error) && error.response) {
+      throw new Error(`Failed to fetch unread count: ${error.response.status}`);
+    }
+    throw new Error("Failed to fetch unread count");
   }
-
-  const response = await fetch(
-    `${API_BASE_URL}/api/notifications/unread-count`,
-    {
-      method: "GET",
-      headers,
-    },
-  );
-
-  if (!response.ok) {
-    throw new Error(`Failed to fetch unread count: ${response.status}`);
-  }
-
-  const result: ApiResponse<{ count: number }> = await response.json();
-
-  return result.success && result.data ? result.data.count : 0;
 }
 
 /**
@@ -94,62 +78,51 @@ export async function markAsRead(
   notificationId: string,
   token: string | null,
 ): Promise<Notification> {
-  const headers: Record<string, string> = {
+  try {
-    "Content-Type": "application/json",
+    const response = await apiClient.put<ApiResponse<Notification>>(
-  };
+      `/api/notifications/${notificationId}`,
+      {},
+      withAuth(token),
+    );
 
-  if (token) {
+    const result = response.data;
-    headers["Authorization"] = `Bearer ${token}`;
+    if (result.success && result.data) {
+      return {
+        ...result.data,
+        createdAt: new Date(result.data.createdAt),
+      };
+    }
+    throw new Error("Invalid response format");
+  } catch (error) {
+    if (isAxiosError(error) && error.response) {
+      throw new Error(
+        `Failed to mark notification as read: ${error.response.status}`,
+      );
+    }
+    if (error instanceof Error && error.message === "Invalid response format") {
+      throw error;
+    }
+    throw new Error("Failed to mark notification as read");
   }
-
-  const response = await fetch(
-    `${API_BASE_URL}/api/notifications/${notificationId}`,
-    {
-      method: "PUT",
-      headers,
-    },
-  );
-
-  if (!response.ok) {
-    throw new Error(`Failed to mark notification as read: ${response.status}`);
-  }
-
-  const result: ApiResponse<Notification> = await response.json();
-
-  if (result.success && result.data) {
-    return {
-      ...result.data,
-      createdAt: new Date(result.data.createdAt),
-    };
-  }
-
-  throw new Error("Invalid response format");
 }
 
 /**
  * Mark all notifications as read
  */
 export async function markAllAsRead(token: string | null): Promise<void> {
-  const headers: Record<string, string> = {
+  try {
-    "Content-Type": "application/json",
+    await apiClient.post(
-  };
+      "/api/notifications/mark-all-read",
-
+      {},
-  if (token) {
+      withAuth(token),
-    headers["Authorization"] = `Bearer ${token}`;
-  }
-
-  const response = await fetch(
-    `${API_BASE_URL}/api/notifications/mark-all-read`,
-    {
-      method: "POST",
-      headers,
-    },
-  );
-
-  if (!response.ok) {
-    throw new Error(
-      `Failed to mark all notifications as read: ${response.status}`,
     );
+  } catch (error) {
+    if (isAxiosError(error) && error.response) {
+      throw new Error(
+        `Failed to mark all notifications as read: ${error.response.status}`,
+      );
+    }
+    throw new Error("Failed to mark all notifications as read");
   }
 }
 
@@ -160,24 +133,18 @@ export async function deleteNotification(
   notificationId: string,
   token: string | null,
 ): Promise<void> {
-  const headers: Record<string, string> = {
+  try {
-    "Content-Type": "application/json",
+    await apiClient.delete(
-  };
+      `/api/notifications/${notificationId}`,
-
+      withAuth(token),
-  if (token) {
+    );
-    headers["Authorization"] = `Bearer ${token}`;
+  } catch (error) {
-  }
+    if (isAxiosError(error) && error.response) {
-
+      throw new Error(
-  const response = await fetch(
+        `Failed to delete notification: ${error.response.status}`,
-    `${API_BASE_URL}/api/notifications/${notificationId}`,
+      );
-    {
+    }
-      method: "DELETE",
+    throw new Error("Failed to delete notification");
-      headers,
-    },
-  );
-
-  if (!response.ok) {
-    throw new Error(`Failed to delete notification: ${response.status}`);
   }
 }
 
@@ -189,21 +156,16 @@ export async function savePushToken(
   deviceType: "ios" | "android",
   token: string | null,
 ): Promise<void> {
-  const headers: Record<string, string> = {
+  try {
-    "Content-Type": "application/json",
+    await apiClient.post(
-  };
+      "/api/notifications/save-token",
-
+      { expoPushToken, deviceType },
-  if (token) {
+      withAuth(token),
-    headers["Authorization"] = `Bearer ${token}`;
+    );
-  }
+  } catch (error) {
-
+    if (isAxiosError(error) && error.response) {
-  const response = await fetch(`${API_BASE_URL}/api/notifications/save-token`, {
+      throw new Error(`Failed to save push token: ${error.response.status}`);
-    method: "POST",
+    }
-    headers,
+    throw new Error("Failed to save push token");
-    body: JSON.stringify({ expoPushToken, deviceType }),
-  });
-
-  if (!response.ok) {
-    throw new Error(`Failed to save push token: ${response.status}`);
   }
 }

apps/mobile/src/api/recommendations.ts

@@ -1,4 +1,6 @@
-import { API_BASE_URL, API_ENDPOINTS } from "../config/api";
+import { isAxiosError } from "axios";
+import { apiClient, withAuth } from "./client";
+import { API_ENDPOINTS } from "../config/api";
 
 export interface Recommendation {
   id: string;
@@ -21,6 +23,15 @@ export interface GenerateRecommendationRequest {
   modelProvider?: "openai" | "deepseek" | "ollama";
 }
 
+interface ApiResponse<T> {
+  success?: boolean;
+  data?: T;
+}
+
+function isApiResponse<T>(value: unknown): value is ApiResponse<T> {
+  return typeof value === "object" && value !== null && "success" in value;
+}
+
 /**
  * Get recommendations for a user
  *
@@ -32,28 +43,29 @@ export async function getRecommendations(
   userId: string,
   token: string | null,
 ): Promise<Recommendation[]> {
-  const headers: any = {
+  let result: ApiResponse<Recommendation[]> | Recommendation[];
-    "Content-Type": "application/json",
+  try {
-  };
+    const response = await apiClient.get(API_ENDPOINTS.RECOMMENDATIONS, {
-
+      params: { userId },
-  if (token) {
+      ...withAuth(token),
-    headers["Authorization"] = `Bearer ${token}`;
+    });
+    result = response.data;
+  } catch (error) {
+    if (isAxiosError(error) && error.response) {
+      throw new Error(
+        `Failed to fetch recommendations: ${error.response.status}`,
+      );
+    }
+    throw new Error("Failed to fetch recommendations");
   }
 
-  const response = await fetch(
-    `${API_BASE_URL}${API_ENDPOINTS.RECOMMENDATIONS}?userId=${userId}`,
-    { headers },
-  );
-
-  if (!response.ok) {
-    throw new Error(`Failed to fetch recommendations: ${response.status}`);
-  }
-
-  const result = await response.json();
-
   // Handle standardized API response format
   // API returns: { success: true, data: [...], meta: {...} }
-  if (result.success && result.data) {
+  if (
+    isApiResponse<Recommendation[]>(result) &&
+    result.success &&
+    result.data
+  ) {
     return Array.isArray(result.data) ? result.data : [];
   }
 
@@ -72,36 +84,30 @@ export async function generateRecommendation(
   data: GenerateRecommendationRequest,
   token: string | null,
 ): Promise<Recommendation> {
-  const headers: any = {
+  let result: ApiResponse<Recommendation> | Recommendation;
-    "Content-Type": "application/json",
+  try {
-  };
+    const response = await apiClient.post(
-
+      `${API_ENDPOINTS.RECOMMENDATIONS}/generate`,
-  if (token) {
+      data,
-    headers["Authorization"] = `Bearer ${token}`;
+      withAuth(token),
+    );
+    result = response.data;
+  } catch (error) {
+    if (isAxiosError(error) && error.response) {
+      throw new Error(
+        `Failed to generate recommendation: ${error.response.status}`,
+      );
+    }
+    throw new Error("Failed to generate recommendation");
   }
 
-  const response = await fetch(
-    `${API_BASE_URL}${API_ENDPOINTS.RECOMMENDATIONS}/generate`,
-    {
-      method: "POST",
-      headers,
-      body: JSON.stringify(data),
-    },
-  );
-
-  if (!response.ok) {
-    throw new Error(`Failed to generate recommendation: ${response.status}`);
-  }
-
-  const result = await response.json();
-
   // Handle standardized API response format
-  if (result.success && result.data) {
+  if (isApiResponse<Recommendation>(result) && result.success && result.data) {
     return result.data;
   }
 
   // Fallback for legacy format
-  return result;
+  return result as Recommendation;
 }
 
 /**
@@ -115,40 +121,32 @@ export async function generateRecommendation(
 export async function approveRecommendation(
   recommendationId: string,
   token: string | null,
-  approvedBy?: string,
 ): Promise<Recommendation> {
-  const headers: any = {
+  let result: ApiResponse<Recommendation> | Recommendation;
-    "Content-Type": "application/json",
+  try {
-  };
+    const response = await apiClient.post(
-
+      `${API_ENDPOINTS.RECOMMENDATIONS}/approve`,
-  if (token) {
+      {
-    headers["Authorization"] = `Bearer ${token}`;
-  }
-
-  const response = await fetch(
-    `${API_BASE_URL}${API_ENDPOINTS.RECOMMENDATIONS}/approve`,
-    {
-      method: "POST",
-      headers,
-      body: JSON.stringify({
         recommendationId,
         status: "approved",
-        approvedBy,
+      },
-      }),
+      withAuth(token),
-    },
+    );
-  );
+    result = response.data;
-
+  } catch (error) {
-  if (!response.ok) {
+    if (isAxiosError(error) && error.response) {
-    throw new Error(`Failed to approve recommendation: ${response.status}`);
+      throw new Error(
+        `Failed to approve recommendation: ${error.response.status}`,
+      );
+    }
+    throw new Error("Failed to approve recommendation");
   }
 
-  const result = await response.json();
-
   // Handle standardized API response format
-  if (result.success && result.data) {
+  if (isApiResponse<Recommendation>(result) && result.success && result.data) {
     return result.data;
   }
 
   // Fallback for legacy format
-  return result;
+  return result as Recommendation;
 }

apps/mobile/src/app/(auth)/onboarding.tsx

@@ -12,7 +12,7 @@ import {
 import { useUser, useAuth } from "@clerk/clerk-expo";
 import { useRouter } from "expo-router";
 import { fitnessProfileApi } from "@/api/fitnessProfile";
-import { API_BASE_URL } from "@/config/api";
+import { gymsApi, type Gym } from "@/api/gyms";
 import log from "../../utils/logger";
 
 export default function OnboardingScreen() {
@@ -20,9 +20,7 @@ export default function OnboardingScreen() {
   const { getToken } = useAuth();
   const router = useRouter();
   const [isSubmitting, setIsSubmitting] = useState(false);
-  const [gyms, setGyms] = useState<
+  const [gyms, setGyms] = useState<Gym[]>([]);
-    Array<{ id: string; name: string; location?: string }>
-  >([]);
   const [gymsLoading, setGymsLoading] = useState<boolean>(false);
   const [selectedGymId, setSelectedGymId] = useState<string | null>(null);
 
@@ -31,13 +29,8 @@ export default function OnboardingScreen() {
       try {
         setGymsLoading(true);
         const token = await getToken();
-        const res = await fetch(`${API_BASE_URL}/api/gyms`, {
+        const data = await gymsApi.getGyms(token);
-          headers: token ? { Authorization: `Bearer ${token}` } : undefined,
+        setGyms(data);
-        });
-        const data = await res.json();
-        if (Array.isArray(data)) {
-          setGyms(data);
-        }
       } catch (e) {
         log.error("Failed to fetch gyms", e);
       } finally {
@@ -82,14 +75,7 @@ export default function OnboardingScreen() {
       // If gym was selected or cleared, patch user's gym selection first
       // selectedGymId: string gym id, or null to proceed without gym
       try {
-        await fetch(`${API_BASE_URL}/api/users/gym`, {
+        await gymsApi.updateUserGym(selectedGymId, token);
-          method: "PATCH",
-          headers: {
-            "Content-Type": "application/json",
-            Authorization: `Bearer ${token}`,
-          },
-          body: JSON.stringify({ gymId: selectedGymId }),
-        });
       } catch (e) {
         log.warn("Failed to update gym selection", { gymId: selectedGymId });
       }

apps/mobile/src/app/(tabs)/profile.tsx

@@ -18,8 +18,8 @@ import { ListItem } from "../../components/ListItem";
 import { MinimalButton } from "../../components/MinimalButton";
 import { Badge } from "../../components/Badge";
 import { IconContainer } from "../../components/IconContainer";
-import { API_BASE_URL, API_ENDPOINTS } from "../../config/api";
 import { fitnessProfileApi, FitnessProfile } from "../../api/fitnessProfile";
+import { gymsApi, type Gym } from "../../api/gyms";
 import log from "../../utils/logger";
 
 export default function ProfileScreen() {
@@ -29,9 +29,7 @@ export default function ProfileScreen() {
   const { colors, typography, theme: activeTheme, setTheme } = useTheme();
   const { getToken } = useAuth();
 
-  const [gyms, setGyms] = useState<
+  const [gyms, setGyms] = useState<Gym[]>([]);
-    Array<{ id: string; name: string; location?: string }>
-  >([]);
   const [gymsLoading, setGymsLoading] = useState(false);
   const [selectedGymId, setSelectedGymId] = useState<string | null>(null);
   const [currentGymId, setCurrentGymId] = useState<string | null>(null);
@@ -76,51 +74,14 @@ export default function ProfileScreen() {
     try {
       setGymsLoading(true);
       const token = await getToken();
-      const url = `${API_BASE_URL}${API_ENDPOINTS.GYMS}`;
+      const list = await gymsApi.getGyms(token);
-      log.debug("Loading gyms", { url });
-      const res = await fetch(url, {
-        headers: token ? { Authorization: `Bearer ${token}` } : undefined,
-      });
-      const contentType = res.headers.get("content-type") || "";
-      if (!res.ok) {
-        const text = await res.text().catch(() => "");
-        log.error(
-          "Failed to fetch gyms - non-OK response",
-          new Error(text.slice(0, 200)),
-          { status: res.status },
-        );
-        setGyms([]);
-        return;
-      }
-      if (!contentType.includes("application/json")) {
-        const text = await res.text().catch(() => "");
-        log.error(
-          "Failed to fetch gyms - expected JSON",
-          new Error(text.slice(0, 200)),
-          { contentType },
-        );
-        setGyms([]);
-        return;
-      }
-      let data: any = null;
-      try {
-        data = await res.json();
-      } catch (e) {
-        const text = await res.text().catch(() => "");
-        log.error("Failed to parse gyms JSON", e, {
-          bodyPreview: text?.slice(0, 200),
-        });
-        setGyms([]);
-        return;
-      }
-      const list = Array.isArray(data) ? data : [];
       setGyms(list);
       const gid =
         currentGymId ??
         ((user?.publicMetadata as any)?.gymId as string | undefined) ??
         null;
       if (gid) {
-        const g = list.find((x: any) => x.id === gid);
+        const g = list.find((x) => x.id === gid);
         setCurrentGymId(gid);
         setCurrentGymName(g?.name ?? null);
         if (selectedGymId === null) setSelectedGymId(gid);
@@ -136,42 +97,7 @@ export default function ProfileScreen() {
   const handleApplyGym = async () => {
     try {
       const token = await getToken();
-      const url = `${API_BASE_URL}${API_ENDPOINTS.USERS.GYM}`;
+      await gymsApi.updateUserGym(selectedGymId, token);
-      log.debug("Updating gym selection", {
-        url,
-        gymId: selectedGymId,
-        token: token ? "present" : "missing",
-      });
-      const res = await fetch(url, {
-        method: "PATCH",
-        headers: {
-          "Content-Type": "application/json",
-          ...(token ? { Authorization: `Bearer ${token}` } : {}),
-        },
-        body: JSON.stringify({ gymId: selectedGymId }),
-      });
-      const contentType = res.headers.get("content-type") || "";
-      if (!res.ok) {
-        const text = await res.text().catch(() => "");
-        log.error(
-          "Failed to update gym selection - non-OK response",
-          new Error(text.slice(0, 200)),
-          { status: res.status },
-        );
-        Alert.alert("Error", "Failed to update gym selection");
-        return;
-      }
-      if (contentType.includes("application/json")) {
-        try {
-          const data = await res.json();
-          log.debug("Gym selection updated", { data });
-        } catch (e) {
-          const text = await res.text().catch(() => "");
-          log.error("Failed to parse update response JSON", e, {
-            bodyPreview: text?.slice(0, 200),
-          });
-        }
-      }
       setCurrentGymId(selectedGymId);
       setCurrentGymName(
         selectedGymId

apps/mobile/src/contexts/FitnessGoalsContext.tsx

@@ -3,6 +3,7 @@ import React, {
   useContext,
   useState,
   useCallback,
+  useEffect,
   useRef,
 } from "react";
 import { useUser, useAuth } from "@clerk/clerk-expo";
@@ -168,12 +169,22 @@ export function FitnessGoalsProvider({
 
   const clearCache = useCallback(() => {
     setGoals([]);
+    setLoading(false);
     setLastFetchTime(0);
     setError(null);
     fetchInProgress.current = false;
     log.debug("Fitness goals cache cleared");
   }, []);
 
+  useEffect(() => {
+    clearCache();
+    if (user?.id) {
+      log.debug("Fitness goals cache reset for user", { userId: user.id });
+    } else {
+      log.debug("Fitness goals cache reset on sign-out");
+    }
+  }, [user?.id, clearCache]);
+
   return (
     <FitnessGoalsContext.Provider
       value={{

apps/mobile/src/contexts/HydrationContext.tsx

@@ -74,6 +74,18 @@ export function HydrationProvider({ children }: { children: React.ReactNode }) {
     fetchTodayHydration();
   }, [fetchTodayHydration]);
 
+  useEffect(() => {
+    setHydration(null);
+    setError(null);
+    setLoading(false);
+    setWaterGoal(2000);
+    if (user?.id) {
+      log.debug("Hydration state reset for user", { userId: user.id });
+    } else {
+      log.debug("Hydration state reset on sign-out");
+    }
+  }, [user?.id]);
+
   const addWater = useCallback(
     async (amount: number) => {
       if (!user?.id) return;

apps/mobile/src/contexts/NotificationsContext.tsx

@@ -6,7 +6,7 @@ import React, {
   useCallback,
   useRef,
 } from "react";
-import { useAuth } from "@clerk/clerk-expo";
+import { useAuth, useUser } from "@clerk/clerk-expo";
 import {
   fetchNotifications,
   fetchUnreadCount,
@@ -37,6 +37,7 @@ export function NotificationsProvider({
   children: React.ReactNode;
 }) {
   const { getToken, isSignedIn } = useAuth();
+  const { user } = useUser();
   const [notifications, setNotifications] = useState<Notification[]>([]);
   const [unreadCount, setUnreadCount] = useState(0);
   const [loading, setLoading] = useState(false);
@@ -160,6 +161,19 @@ export function NotificationsProvider({
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [isSignedIn]); // Only run when sign-in state changes
 
+  useEffect(() => {
+    setNotifications([]);
+    setUnreadCount(0);
+    setLoading(false);
+    fetchInProgressRef.current = false;
+    lastFetchTimeRef.current = 0;
+    if (user?.id) {
+      log.debug("Notifications state reset for user", { userId: user.id });
+    } else {
+      log.debug("Notifications state reset on sign-out");
+    }
+  }, [user?.id]);
+
   // Periodic refresh every 30 seconds
   useEffect(() => {
     if (!isSignedIn) return;

apps/mobile/src/contexts/NutritionContext.tsx

@@ -88,6 +88,19 @@ export function NutritionProvider({ children }: { children: React.ReactNode }) {
     fetchTodayNutrition();
   }, [fetchTodayNutrition]);
 
+  useEffect(() => {
+    setNutrition(null);
+    setMeals([]);
+    setError(null);
+    setLoading(false);
+    setCalorieGoal(2000);
+    if (user?.id) {
+      log.debug("Nutrition state reset for user", { userId: user.id });
+    } else {
+      log.debug("Nutrition state reset on sign-out");
+    }
+  }, [user?.id]);
+
   const addMeal = useCallback(
     async (data: Omit<MealEntry, "id" | "createdAt" | "dailyNutritionId">) => {
       if (!user?.id) return;

apps/mobile/src/contexts/RecommendationsContext.tsx

@@ -3,6 +3,7 @@ import React, {
   useContext,
   useState,
   useCallback,
+  useEffect,
   useRef,
 } from "react";
 import { useUser, useAuth } from "@clerk/clerk-expo";
@@ -108,12 +109,22 @@ export function RecommendationsProvider({
 
   const clearCache = useCallback(() => {
     setRecommendations([]);
+    setLoading(false);
     setLastFetchTime(0);
     setError(null);
     fetchInProgress.current = false;
     log.debug("Recommendations cache cleared");
   }, []);
 
+  useEffect(() => {
+    clearCache();
+    if (user?.id) {
+      log.debug("Recommendations cache reset for user", { userId: user.id });
+    } else {
+      log.debug("Recommendations cache reset on sign-out");
+    }
+  }, [user?.id, clearCache]);
+
   return (
     <RecommendationsContext.Provider
       value={{

apps/mobile/src/contexts/StatisticsContext.tsx

@@ -1,4 +1,10 @@
-import React, { createContext, useContext, useState, useCallback } from "react";
+import React, {
+  createContext,
+  useContext,
+  useState,
+  useCallback,
+  useEffect,
+} from "react";
 import { useUser, useAuth } from "@clerk/clerk-expo";
 import { getUserStatistics } from "../api/statistics";
 import type { UserStatisticsResponse } from "../api/types";
@@ -75,11 +81,21 @@ export function StatisticsProvider({
 
   const clearCache = useCallback(() => {
     setStatistics(null);
+    setLoading(false);
     setLastFetchTime(0);
     setError(null);
     log.debug("Statistics cache cleared");
   }, []);
 
+  useEffect(() => {
+    clearCache();
+    if (user?.id) {
+      log.debug("Statistics cache reset for user", { userId: user.id });
+    } else {
+      log.debug("Statistics cache reset on sign-out");
+    }
+  }, [user?.id, clearCache]);
+
   const forceRefresh = useCallback(async () => {
     if (!user?.id) return;
 

apps/mobile/src/services/fitnessGoals.ts

@@ -1,4 +1,6 @@
-import { API_BASE_URL, API_ENDPOINTS } from "../config/api";
+import { isAxiosError } from "axios";
+import { apiClient, withAuth } from "../api/client";
+import { API_ENDPOINTS } from "../config/api";
 import log from "../utils/logger";
 
 export interface FitnessGoal {
@@ -41,38 +43,21 @@ export interface CreateGoalData {
 }
 
 export class FitnessGoalsService {
-  private async getAuthHeaders(token: string | null): Promise<any> {
-    const headers: any = {
-      "Content-Type": "application/json",
-    };
-
-    if (token) {
-      headers["Authorization"] = `Bearer ${token}`;
-    }
-
-    return headers;
-  }
-
   async getGoals(
     userId: string,
     token: string | null,
     status?: string,
   ): Promise<FitnessGoal[]> {
     try {
-      const headers = await this.getAuthHeaders(token);
+      const response = await apiClient.get(API_ENDPOINTS.FITNESS_GOALS.LIST, {
-      let url = `${API_BASE_URL}${API_ENDPOINTS.FITNESS_GOALS.LIST}?userId=${userId}`;
+        params: {
+          userId,
+          ...(status && status !== "all" ? { status } : {}),
+        },
+        ...withAuth(token),
+      });
 
-      if (status && status !== "all") {
+      const result = response.data;
-        url += `&status=${status}`;
-      }
-
-      const response = await fetch(url, { headers });
-
-      if (!response.ok) {
-        throw new Error(`Failed to fetch goals: ${response.status}`);
-      }
-
-      const result = await response.json();
 
       // Handle standardized API response format
       // API returns: { success: true, data: [...], meta: {...} }
@@ -83,6 +68,9 @@ export class FitnessGoalsService {
       // Fallback for legacy format (direct array)
       return Array.isArray(result) ? result : [];
     } catch (error) {
+      if (isAxiosError(error) && error.response) {
+        throw new Error(`Failed to fetch goals: ${error.response.status}`);
+      }
       log.error("Failed to fetch fitness goals", error);
       throw error;
     }
@@ -93,22 +81,13 @@ export class FitnessGoalsService {
     token: string | null,
   ): Promise<FitnessGoal> {
     try {
-      const headers = await this.getAuthHeaders(token);
+      const response = await apiClient.post(
-      const response = await fetch(
+        API_ENDPOINTS.FITNESS_GOALS.CREATE,
-        `${API_BASE_URL}${API_ENDPOINTS.FITNESS_GOALS.CREATE}`,
+        goalData,
-        {
+        withAuth(token),
-          method: "POST",
-          headers,
-          body: JSON.stringify(goalData),
-        },
       );
 
-      if (!response.ok) {
+      const result = response.data;
-        const error = await response.json();
-        throw new Error(error.error || "Failed to create goal");
-      }
-
-      const result = await response.json();
 
       // Handle standardized API response format
       if (result.success && result.data) {
@@ -118,6 +97,14 @@ export class FitnessGoalsService {
       // Fallback for legacy format
       return result;
     } catch (error) {
+      if (isAxiosError(error)) {
+        const message =
+          (error.response?.data as { error?: string } | undefined)?.error ||
+          (error.response
+            ? `Failed to create goal: ${error.response.status}`
+            : "Failed to create goal");
+        throw new Error(message);
+      }
       log.error("Failed to create fitness goal", error);
       throw error;
     }
@@ -129,21 +116,13 @@ export class FitnessGoalsService {
     token: string | null,
   ): Promise<FitnessGoal> {
     try {
-      const headers = await this.getAuthHeaders(token);
+      const response = await apiClient.put(
-      const response = await fetch(
+        API_ENDPOINTS.FITNESS_GOALS.UPDATE(id),
-        `${API_BASE_URL}${API_ENDPOINTS.FITNESS_GOALS.UPDATE(id)}`,
+        updates,
-        {
+        withAuth(token),
-          method: "PUT",
-          headers,
-          body: JSON.stringify(updates),
-        },
       );
 
-      if (!response.ok) {
+      const result = response.data;
-        throw new Error("Failed to update goal");
-      }
-
-      const result = await response.json();
 
       // Handle standardized API response format
       if (result.success && result.data) {
@@ -153,6 +132,9 @@ export class FitnessGoalsService {
       // Fallback for legacy format
       return result;
     } catch (error) {
+      if (isAxiosError(error) && error.response) {
+        throw new Error(`Failed to update goal: ${error.response.status}`);
+      }
       log.error("Failed to update fitness goal", error);
       throw error;
     }
@@ -168,20 +150,13 @@ export class FitnessGoalsService {
 
   async completeGoal(id: string, token: string | null): Promise<FitnessGoal> {
     try {
-      const headers = await this.getAuthHeaders(token);
+      const response = await apiClient.post(
-      const response = await fetch(
+        API_ENDPOINTS.FITNESS_GOALS.COMPLETE(id),
-        `${API_BASE_URL}${API_ENDPOINTS.FITNESS_GOALS.COMPLETE(id)}`,
+        {},
-        {
+        withAuth(token),
-          method: "POST",
-          headers,
-        },
       );
 
-      if (!response.ok) {
+      const result = response.data;
-        throw new Error("Failed to complete goal");
-      }
-
-      const result = await response.json();
 
       // Note: Complete endpoint returns direct object (legacy format)
       // Handle standardized API response format (if migrated)
@@ -192,6 +167,9 @@ export class FitnessGoalsService {
       // Fallback for legacy format (current implementation)
       return result;
     } catch (error) {
+      if (isAxiosError(error) && error.response) {
+        throw new Error(`Failed to complete goal: ${error.response.status}`);
+      }
       log.error("Failed to complete fitness goal", error);
       throw error;
     }
@@ -199,22 +177,17 @@ export class FitnessGoalsService {
 
   async deleteGoal(id: string, token: string | null): Promise<void> {
     try {
-      const headers = await this.getAuthHeaders(token);
+      await apiClient.delete(
-      const response = await fetch(
+        API_ENDPOINTS.FITNESS_GOALS.DELETE(id),
-        `${API_BASE_URL}${API_ENDPOINTS.FITNESS_GOALS.DELETE(id)}`,
+        withAuth(token),
-        {
-          method: "DELETE",
-          headers,
-        },
       );
 
-      if (!response.ok) {
-        throw new Error("Failed to delete goal");
-      }
-
       // DELETE endpoint returns: { success: true, data: { deleted: true }, meta: {...} }
       // No need to parse the result for void return type
     } catch (error) {
+      if (isAxiosError(error) && error.response) {
+        throw new Error(`Failed to delete goal: ${error.response.status}`);
+      }
       log.error("Failed to delete fitness goal", error);
       throw error;
     }