feat: make mode creation preview-only and cache-safe

tests/unit/assistant_stream_runtime.test.cjs

@@ -138,7 +138,7 @@ function ndjsonResponse(events) {
   };
 }
 
-function createHarness(events) {
+function createHarness(events, executionMode = "dry_run") {
   const document = new MockEventTarget();
   const windowEvents = new MockEventTarget();
   const body = new MockElement("body");
@@ -209,7 +209,7 @@ function createHarness(events) {
   sandbox.removeEventListener = windowEvents.removeEventListener.bind(windowEvents);
   sandbox.dispatchEvent = windowEvents.dispatchEvent.bind(windowEvents);
   sandbox.CognitiveAgentConsole = {
-    getExecutionMode: () => "dry_run",
+    getExecutionMode: () => executionMode,
     async refreshModeProfiles(modeProfileId) {
       refreshedModeProfiles.push(modeProfileId);
     },
@@ -367,6 +367,10 @@ test("assistant bridges request start and validated local controls to the consol
   const cards = assistantArticle.querySelectorAll(".assistant-dispatched-controls");
   assert.equal(cards.length, 1);
   assert.equal(cards[0].open, true);
+  assert.equal(
+    cards[0].children[0].children[1].textContent,
+    "控制指令预览（未下发）",
+  );
   assert.equal(
     cards[0].querySelector(".assistant-dispatched-controls-count").textContent,
     "3",
@@ -381,6 +385,7 @@ test("assistant bridges request start and validated local controls to the consol
     ["23°C", "关闭", "关闭"],
   );
   assert.match(rows[0].title, /实际控制指令：ac temp driver 23/);
+  assert.match(rows[0].title, /下发状态：仅预览 · 未下发/);
 });
 
 test("unsupported-control suggestions render once and click through as a new command", async () => {
@@ -544,6 +549,17 @@ function modeDraftEvents(sourceRequestId, temperatureC) {
   ];
 }
 
+test("mode creation always requests dry-run even while the console is in hardware mode", async () => {
+  const harness = createHarness(modeDraftEvents("req-draft-hardware-safe", 24), "hardware");
+  harness.input.value = "创建一个午休模式";
+
+  await harness.sandbox.CognitiveAgentAssistant.submit();
+
+  const request = JSON.parse(harness.requestCalls[0].options.body);
+  assert.equal(request.execution_mode, "dry_run");
+  assert.equal(Object.hasOwn(request, "hardware_client_id"), false);
+});
+
 test("a follow-up turn carries only the active authoritative draft reference", async () => {
   const events = modeDraftEvents("req-draft-one", 24);
   const harness = createHarness(events);