fix: load maxAccounts from config on frontend init

The data store's fetchVersion() was never called, so maxAccounts stayed
at the default value of 10. Consolidated into the global store's
fetchVersion() which is called on init.

Co-Authored-By: Claude <noreply@anthropic.com>

public/js/store.js

@@ -43,6 +43,10 @@ document.addEventListener('alpine:init', () => {
                     if (data.version) {
                         this.version = data.version;
                     }
+                    // Update maxAccounts in data store
+                    if (data.config && typeof data.config.maxAccounts === 'number') {
+                        Alpine.store('data').maxAccounts = data.config.maxAccounts;
+                    }
                 }
             } catch (error) {
                 console.debug('Could not fetch version:', error);