feat(gateway): add system.services and dashboard services grid

src/gateway/ui/style.css

@@ -771,6 +771,82 @@ header #status.status-ok {
   text-transform: capitalize;
 }
 
+/* ── Services Grid ──────────────────────────────────────────── */
+
+.services-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
+  gap: 12px;
+  margin-bottom: 32px;
+}
+
+.service-card {
+  background-color: var(--bg-secondary);
+  border: 1px solid var(--border);
+  border-radius: var(--radius);
+  padding: 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  border-left: 3px solid var(--border);
+}
+
+.service-card.service-connected {
+  border-left-color: var(--success);
+}
+
+.service-card.service-configured {
+  border-left-color: var(--accent);
+}
+
+.service-card.service-error {
+  border-left-color: var(--error);
+}
+
+.service-card.service-not-configured {
+  border-left-color: var(--text-muted);
+  opacity: 0.6;
+}
+
+.service-type-icon {
+  font-size: var(--font-size-base);
+  flex-shrink: 0;
+}
+
+.service-name {
+  font-weight: 600;
+  color: var(--text-primary);
+  text-transform: capitalize;
+}
+
+.service-status {
+  font-size: var(--font-size-sm);
+  color: var(--text-muted);
+  text-transform: uppercase;
+}
+
+.service-card.service-connected .service-status {
+  color: var(--success);
+}
+
+.service-card.service-configured .service-status {
+  color: var(--accent);
+}
+
+.service-card.service-error .service-status {
+  color: var(--error);
+}
+
+.service-card.service-not-configured .service-status {
+  color: var(--text-muted);
+  font-style: italic;
+}
+
+.service-description {
+  font-size: var(--font-size-sm);
+  color: var(--text-muted);
+}
+
 /* ── Section Headers ────────────────────────────────────────── */
 
 .section-title {