perf(webui): refactor dashboard modules and optimize API performance

public/js/components/dashboard/stats.js

@@ -0,0 +1,43 @@
+/**
+ * Dashboard Stats Module
+ * Handles account statistics calculation
+ */
+window.DashboardStats = window.DashboardStats || {};
+
+/**
+ * Update account statistics (active, limited, total)
+ * @param {object} component - Dashboard component instance
+ */
+window.DashboardStats.updateStats = function(component) {
+    const accounts = Alpine.store('data').accounts;
+    let active = 0, limited = 0;
+
+    const isCore = (id) => /sonnet|opus|pro|flash/i.test(id);
+
+    // Only count enabled accounts in statistics
+    const enabledAccounts = accounts.filter(acc => acc.enabled !== false);
+
+    enabledAccounts.forEach(acc => {
+        if (acc.status === 'ok') {
+            const limits = Object.entries(acc.limits || {});
+            let hasActiveCore = limits.some(([id, l]) => l && l.remainingFraction > 0.05 && isCore(id));
+
+            if (!hasActiveCore) {
+                const hasAnyCore = limits.some(([id]) => isCore(id));
+                if (!hasAnyCore) {
+                    hasActiveCore = limits.some(([_, l]) => l && l.remainingFraction > 0.05);
+                }
+            }
+
+            if (hasActiveCore) active++; else limited++;
+        } else {
+            limited++;
+        }
+    });
+
+    // TOTAL shows only enabled accounts
+    // Disabled accounts are excluded from all statistics
+    component.stats.total = enabledAccounts.length;
+    component.stats.active = active;
+    component.stats.limited = limited;
+};