fix: Settings functionality + Dashboard tab counts

SETTINGS FIXES:
- Profile save now calls real API (PUT /auth/me)
- Updates store after successful profile save
- Notification preferences now functional with state
- Save preferences button added
- Preferences stored in localStorage
- Proper loading/saving states

DASHBOARD FIX:
- Portfolio data loads on mount (not just when tab active)
- Tab counts now show correct numbers
- Both Watchlist and Portfolio counts visible immediately

API:
- Added updateMe() method in api.ts

frontend/src/app/dashboard/page.tsx

@@ -111,11 +111,12 @@ export default function DashboardPage() {
     }
   }, [isLoading, isAuthenticated, router])
 
+  // Load portfolio data on mount (so we can show count in tab)
   useEffect(() => {
-    if (isAuthenticated && activeTab === 'portfolio') {
+    if (isAuthenticated) {
       loadPortfolio()
     }
-  }, [isAuthenticated, activeTab])
+  }, [isAuthenticated])
 
   const handleOpenBillingPortal = async () => {
     try {

frontend/src/app/settings/page.tsx

@@ -43,6 +43,14 @@ export default function SettingsPage() {
     email: '',
   })
   
+  // Notification preferences (local state - would be persisted via API in production)
+  const [notificationPrefs, setNotificationPrefs] = useState({
+    domain_availability: true,
+    price_alerts: true,
+    weekly_digest: false,
+  })
+  const [savingNotifications, setSavingNotifications] = useState(false)
+  
   // Price alerts
   const [priceAlerts, setPriceAlerts] = useState<PriceAlert[]>([])
   const [loadingAlerts, setLoadingAlerts] = useState(false)
@@ -92,9 +100,10 @@ export default function SettingsPage() {
     setSuccess(null)
     
     try {
-      // In a real app, this would call an API to update the user
-      // For now, we'll just show success
-      await new Promise(resolve => setTimeout(resolve, 500))
+      await api.updateMe({ name: profileForm.name || undefined })
+      // Update store with new user info
+      const { checkAuth } = useStore.getState()
+      await checkAuth()
       setSuccess('Profile updated successfully')
     } catch (err) {
       setError(err instanceof Error ? err.message : 'Failed to update profile')
@@ -103,6 +112,32 @@ export default function SettingsPage() {
     }
   }
 
+  const handleSaveNotifications = async () => {
+    setSavingNotifications(true)
+    setError(null)
+    setSuccess(null)
+    
+    try {
+      // Store in localStorage for now (would be API in production)
+      localStorage.setItem('notification_prefs', JSON.stringify(notificationPrefs))
+      setSuccess('Notification preferences saved')
+    } catch (err) {
+      setError(err instanceof Error ? err.message : 'Failed to save preferences')
+    } finally {
+      setSavingNotifications(false)
+    }
+  }
+
+  // Load notification preferences from localStorage
+  useEffect(() => {
+    const saved = localStorage.getItem('notification_prefs')
+    if (saved) {
+      try {
+        setNotificationPrefs(JSON.parse(saved))
+      } catch {}
+    }
+  }, [])
+
   const handleDeletePriceAlert = async (tld: string, alertId: number) => {
     setDeletingAlertId(alertId)
     try {
@@ -301,7 +336,12 @@ export default function SettingsPage() {
                           <p className="text-body-sm font-medium text-foreground">Domain Availability</p>
                           <p className="text-body-xs text-foreground-muted">Get notified when watched domains become available</p>
                         </div>
-                        <input type="checkbox" defaultChecked className="w-5 h-5 accent-accent" />
+                        <input 
+                          type="checkbox" 
+                          checked={notificationPrefs.domain_availability}
+                          onChange={(e) => setNotificationPrefs({ ...notificationPrefs, domain_availability: e.target.checked })}
+                          className="w-5 h-5 accent-accent cursor-pointer" 
+                        />
                       </label>
 
                       <label className="flex items-center justify-between p-4 bg-background border border-border rounded-xl cursor-pointer hover:border-foreground/20 transition-colors">
@@ -309,7 +349,12 @@ export default function SettingsPage() {
                           <p className="text-body-sm font-medium text-foreground">Price Alerts</p>
                           <p className="text-body-xs text-foreground-muted">Get notified when TLD prices change</p>
                         </div>
-                        <input type="checkbox" defaultChecked className="w-5 h-5 accent-accent" />
+                        <input 
+                          type="checkbox" 
+                          checked={notificationPrefs.price_alerts}
+                          onChange={(e) => setNotificationPrefs({ ...notificationPrefs, price_alerts: e.target.checked })}
+                          className="w-5 h-5 accent-accent cursor-pointer" 
+                        />
                       </label>
 
                       <label className="flex items-center justify-between p-4 bg-background border border-border rounded-xl cursor-pointer hover:border-foreground/20 transition-colors">
@@ -317,9 +362,24 @@ export default function SettingsPage() {
                           <p className="text-body-sm font-medium text-foreground">Weekly Digest</p>
                           <p className="text-body-xs text-foreground-muted">Receive a weekly summary of your portfolio</p>
                         </div>
-                        <input type="checkbox" className="w-5 h-5 accent-accent" />
+                        <input 
+                          type="checkbox" 
+                          checked={notificationPrefs.weekly_digest}
+                          onChange={(e) => setNotificationPrefs({ ...notificationPrefs, weekly_digest: e.target.checked })}
+                          className="w-5 h-5 accent-accent cursor-pointer" 
+                        />
                       </label>
                     </div>
+
+                    <button
+                      onClick={handleSaveNotifications}
+                      disabled={savingNotifications}
+                      className="mt-5 px-6 py-3 bg-foreground text-background text-ui font-medium rounded-xl
+                                 hover:bg-foreground/90 disabled:opacity-50 transition-all flex items-center gap-2"
+                    >
+                      {savingNotifications ? <Loader2 className="w-4 h-4 animate-spin" /> : <Check className="w-4 h-4" />}
+                      Save Preferences
+                    </button>
                   </div>
 
                   {/* Active Price Alerts */}

frontend/src/lib/api.ts

@@ -130,6 +130,19 @@ class ApiClient {
     }>('/auth/me')
   }
 
+  async updateMe(data: { name?: string }) {
+    return this.request<{
+      id: number
+      email: string
+      name: string | null
+      is_active: boolean
+      created_at: string
+    }>('/auth/me', {
+      method: 'PUT',
+      body: JSON.stringify(data),
+    })
+  }
+
   // Password Reset
   async forgotPassword(email: string) {
     return this.request<{ message: string; success: boolean }>('/auth/forgot-password', {