feat: App Config slide-in with Route column, clickable taps, and edit toolbar

- Add Route column to Traces & Taps table (diagram-based mapping, pending backend fix)
- Make tap badges clickable to navigate to route's Taps tab
- Add edit/save/cancel toolbar with design system Button components
- Move Sampling Rate to last position in settings grid
- Support ?tab= URL param on RouteDetail for direct tab navigation
- Bump @cameleer/design-system to 0.1.15 (DetailPanel overlay + backdrop)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/pages/Admin/AppConfigPage.module.css

@@ -76,6 +76,24 @@
   font-size: 11px;
 }
 
+.routeLabel {
+  font-size: 11px;
+  color: var(--text-secondary);
+}
+
+.tapBadgeLink {
+  background: none;
+  border: none;
+  padding: 0;
+  cursor: pointer;
+  border-radius: var(--radius-sm);
+  transition: opacity 0.15s;
+}
+
+.tapBadgeLink:hover {
+  opacity: 0.75;
+}
+
 .removeBtn {
   background: none;
   border: none;
@@ -90,8 +108,36 @@
   color: var(--error);
 }
 
+.panelToolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 12px;
+}
+
 .panelMeta {
   font-size: 11px;
   color: var(--text-muted);
-  margin-bottom: 12px;
 }
+
+.panelActions {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+
+.editBtn {
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  cursor: pointer;
+  font-size: 14px;
+  padding: 4px 6px;
+  border-radius: var(--radius-sm);
+  transition: color 0.15s;
+}
+
+.editBtn:hover {
+  color: var(--text-primary);
+}
+