fix: auto-fetch profile from network when no cached data exists

When a wallet with an existing identity is imported, identity discovery
stores the identity in the local DB but the DashPay profile is not
cached. Previously, the Profile Screen would show 'No Profile Loaded'
and require the user to manually click 'Refresh' to fetch from the
network.

Now, when load_profile_from_database() finds no cached profile data,
it automatically queues a network fetch via pending_action. This runs
on the next UI frame through the existing pending_action mechanism in
render().

The auto-fetch is safe from infinite loops because trigger_load_profile()
sets profile_load_attempted = true, which prevents re-triggering in
subsequent refresh() calls.

Fixes #759

Author: thepastaclaw

src/ui/dashpay/profile_screen.rs

@@ -319,7 +319,13 @@ impl ProfileScreen {
                     }
                 }
                 Ok(None) => {
-                    tracing::debug!("No profile found in database for identity {}", identity_id);
+                    tracing::debug!(
+                        "No profile found in database for identity {}, will auto-fetch from network",
+                        identity_id
+                    );
+                    // No cached profile exists — queue an automatic network fetch
+                    // so the user doesn't have to manually click "Refresh".
+                    self.pending_action = Some(Box::new(self.trigger_load_profile()));
                 }
                 Err(e) => {
                     tracing::error!("Error loading profile from database: {}", e);