fix: harden Pi management readiness

frontend/src/shell/NewSessionDialog.test.tsx

@@ -31,13 +31,13 @@ test("submitting includes browser-local migrated preferences and calls onCreated
   localStorage.clear();
   let body: unknown = null;
   server.use(
-    http.get("http://localhost:8787/settings", () => HttpResponse.json({
+    http.get("/api/settings", () => HttpResponse.json({
       workspace: "default", provider: "zai", model: "glm-5.2", thinking: "low",
     })),
-    http.get("http://localhost:8787/workspaces", () => HttpResponse.json([{
+    http.get("/api/workspaces", () => HttpResponse.json([{
       id: "default", name: "default", file: "default.yaml", displayName: "Default",
     }])),
-    http.post("http://localhost:8787/sessions", async ({ request }) => {
+    http.post("/api/sessions", async ({ request }) => {
       body = await request.json();
       return HttpResponse.json({ id: "s1" });
     }),
@@ -67,21 +67,21 @@ test("first-run direct dialog creation waits for registry policy without a mount
     workspaceId: "psd-clinical", provider: "deepseek", model: "deepseek-v4-pro", thinking: "medium",
   }));
   server.use(
-    http.get("http://localhost:8787/workspaces", () => {
+    http.get("/api/workspaces", () => {
       summaryRequestStarted = true;
       return HttpResponse.json([{
         id: "psd-clinical", name: "psd-clinical", file: "psd-clinical.yaml", displayName: "PSD Clinical",
         revision,
       }]);
     }),
-    http.get("http://localhost:8787/workspaces/psd-clinical", async () => {
+    http.get("/api/workspaces/psd-clinical", async () => {
       policyRequestStarted = true;
       await policyMayFinish;
       return HttpResponse.json({
         workspace: { llm_policy: { default: "zai/glm-5.2", allowed: ["zai/glm-5.2"] } }, revision,
       });
     }),
-    http.post("http://localhost:8787/sessions", async ({ request }) => {
+    http.post("/api/sessions", async ({ request }) => {
       body = await request.json();
       return HttpResponse.json({ id: "s1" });
     }),