refactor: Simplify logout process and enhance routing in authentication components

- Remove unnecessary async handling in logout functions across UserProfile.vue and Navbar.vue.
- Integrate `useRouter` for consistent redirection to the login page after logout.
- Update `logout` method in useAuth.ts to clear local state without an API call.

src/lib/api/lnbits.ts

@@ -50,14 +50,50 @@ class LnbitsAPI {
       (headers as Record<string, string>)['Authorization'] = `Bearer ${this.accessToken}`
     }
 
+    // Debug logging
+    if (import.meta.env.VITE_LNBITS_DEBUG === 'true') {
+      console.log('LNBits API Request:', {
+        url,
+        method: options.method || 'GET',
+        headers: options.headers,
+        body: options.body
+      })
+    }
+
     const response = await fetch(url, {
       ...options,
       headers,
     })
 
+    // Debug logging
+    if (import.meta.env.VITE_LNBITS_DEBUG === 'true') {
+      console.log('LNBits API Response:', {
+        status: response.status,
+        statusText: response.statusText,
+        url: response.url
+      })
+    }
+
     if (!response.ok) {
-      const errorData = await response.json().catch(() => ({}))
-      throw new Error(errorData.detail || `HTTP ${response.status}: ${response.statusText}`)
+      let errorMessage = `HTTP ${response.status}: ${response.statusText}`
+      try {
+        const errorData = await response.json()
+        errorMessage = errorData.detail || errorData.message || errorMessage
+      } catch {
+        // If we can't parse JSON, use the default error message
+      }
+      
+      // Debug logging for errors
+      if (import.meta.env.VITE_LNBITS_DEBUG === 'true') {
+        console.error('LNBits API Error:', {
+          status: response.status,
+          statusText: response.statusText,
+          url: response.url,
+          error: errorMessage
+        })
+      }
+      
+      throw new Error(errorMessage)
     }
 
     return response.json()
@@ -88,14 +124,9 @@ class LnbitsAPI {
   }
 
   async logout(): Promise<void> {
-    try {
-      await this.request('/auth/logout', {
-        method: 'POST',
-      })
-    } finally {
-      this.accessToken = null
-      removeAuthToken()
-    }
+    // Just clear local state - no API call needed for logout
+    this.accessToken = null
+    removeAuthToken()
   }
 
   async getCurrentUser(): Promise<User> {