Add lock files for package management and update architecture documentation

- Introduced bun.lock and package-lock.json to manage dependencies for the project.
- Enhanced backend API architecture documentation with additional security and documentation guidelines.
- Made minor formatting adjustments across various files for consistency and clarity.

frontend-web/src/lib/api/token.ts

@@ -0,0 +1,37 @@
+/**
+ * Token Storage Utilities
+ */
+
+const TOKEN_KEY = 'auth_token';
+const USER_KEY = 'auth_user';
+
+export const tokenStorage = {
+  getToken(): string | null {
+    return localStorage.getItem(TOKEN_KEY);
+  },
+
+  setToken(token: string): void {
+    localStorage.setItem(TOKEN_KEY, token);
+  },
+
+  removeToken(): void {
+    localStorage.removeItem(TOKEN_KEY);
+  },
+
+  getUser(): string | null {
+    return localStorage.getItem(USER_KEY);
+  },
+
+  setUser(user: string): void {
+    localStorage.setItem(USER_KEY, user);
+  },
+
+  removeUser(): void {
+    localStorage.removeItem(USER_KEY);
+  },
+
+  clear(): void {
+    this.removeToken();
+    this.removeUser();
+  },
+};