feat(ui): shareholder-grade redesign + live "Your Club" account panel

- New theme.rs design system: palette, embedded fonts, egui Visuals/Style,
  card()/status_pill() helpers.
- Branded hero header (OF monogram), left nav rail, card-based dashboard,
  console-style Logs, themed Config tab, window/taskbar icon.
- New account_monitor.rs: background AccountMonitor (mirrors HealthMonitor,
  5s non-blocking poll) driving a live "Your Club" dashboard card (club
  name/abbr, manager, COINS hero number, level + XP bar, unopened packs,
  funds) with loading/offline/error states.
- account_sync.rs/app.rs/config.rs/main.rs wired to the monitor + theme.
  All existing launch/health/preflight/service/config logic preserved.

src/config.rs

@@ -318,6 +318,17 @@ impl LauncherConfig {
         }
     }
 
+    /// The config the account monitor should poll with, or None when no server
+    /// is configured. Returns a clone so the background thread owns its own
+    /// snapshot and never races the UI's live config.
+    pub fn account_target(&self) -> Option<LauncherConfig> {
+        if self.openfut_server_host.trim().is_empty() {
+            None
+        } else {
+            Some(self.clone())
+        }
+    }
+
     /// Build the shared [`ServerConfig`] from the launcher's configured server
     /// host + destination ports. This is the single place the launcher turns UI
     /// fields into the canonical config consumed by the hook.