feat: add per-model concurrency limits

frontend-web/src/pages/StrategyRoutes.tsx

@@ -51,6 +51,7 @@ import MemoryPage from "./MemoryPage";
 import NewAgentPage from "./NewAgentPage";
 import PromptPrefixSettingsPage from "./PromptPrefixSettingsPage";
 import PrivateSquareSettingsPage from "./PrivateSquareSettingsPage";
+import ModelConcurrencySettingsPage from "./ModelConcurrencySettingsPage";
 import RecommendedQuestionsPage from "./RecommendedQuestionsPage";
 import ScheduledTaskRunDetailPage from "./ScheduledTaskRunDetailPage";
 import ScheduledTasksPage from "./ScheduledTasksPage";
@@ -346,6 +347,16 @@ export default function StrategyRoutes() {
                 )
               }
             />
+            <Route
+              path="settings/model-concurrency"
+              element={
+                getStoredAuth()?.system_role === "admin" ? (
+                  <ModelConcurrencySettingsPage />
+                ) : (
+                  <Navigate to="/page/workspace/chats/new" replace />
+                )
+              }
+            />
             <Route
               path="settings/llm-metrics"
               element={