diff --git a/web/hwlab-cloud-web/scripts/dist-contract.test.ts b/web/hwlab-cloud-web/scripts/dist-contract.test.ts
index bdb51621..3c730f83 100644
--- a/web/hwlab-cloud-web/scripts/dist-contract.test.ts
+++ b/web/hwlab-cloud-web/scripts/dist-contract.test.ts
@@ -7,7 +7,9 @@ import { fileURLToPath } from "node:url";
 
 import { assertCloudWebDistFresh, buildCloudWebDist, cloudWebDistAliasFiles, inspectCloudWebDistFreshness } from "./dist-contract.ts";
 
-test("Cloud Web dist build emits Vue assets and route aliases", async () => {
+const DIST_CONTRACT_TEST_TIMEOUT_MS = 60_000;
+
+test("Cloud Web dist build emits Vue assets and route aliases", { timeout: DIST_CONTRACT_TEST_TIMEOUT_MS }, async () => {
   const rootDir = makeCloudWebFixture();
   try {
     const distDir = await buildCloudWebDist(rootDir);
@@ -34,7 +36,7 @@ test("Cloud Web dist build emits Vue assets and route aliases", async () => {
   }
 });
 
-test("Cloud Web dist freshness reports stale generated app asset", async () => {
+test("Cloud Web dist freshness reports stale generated app asset", { timeout: DIST_CONTRACT_TEST_TIMEOUT_MS }, async () => {
   const rootDir = makeCloudWebFixture();
   try {
     await buildCloudWebDist(rootDir);
diff --git a/web/hwlab-cloud-web/scripts/workbench-provider-profile.test.ts b/web/hwlab-cloud-web/scripts/workbench-provider-profile.test.ts
new file mode 100644
index 00000000..d261011c
--- /dev/null
+++ b/web/hwlab-cloud-web/scripts/workbench-provider-profile.test.ts
@@ -0,0 +1,14 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+
+import { providerProfileOptionsFromPayload } from "../src/stores/workbench-session.ts";
+
+test("Workbench provider catalog marks missing selected profile as unavailable", () => {
+  const options = providerProfileOptionsFromPayload({ profiles: [{ profile: "dsflash-go", label: "DeepSeek V4 Flash", configured: true }] }, "codex");
+
+  const available = options.find((option) => option.value === "dsflash-go");
+  const missingSelected = options.find((option) => option.value === "codex");
+
+  assert.equal(available?.configured, true);
+  assert.equal(missingSelected?.configured, false);
+});
diff --git a/web/hwlab-cloud-web/src/api/workbench.ts b/web/hwlab-cloud-web/src/api/workbench.ts
index 6b5a78f2..61535ae8 100644
--- a/web/hwlab-cloud-web/src/api/workbench.ts
+++ b/web/hwlab-cloud-web/src/api/workbench.ts
@@ -63,6 +63,7 @@ export interface WorkbenchLaunchContext {
   mdtodoRootRef?: string | null;
   hwpodWorkspaceArgs?: string | null;
   contextFingerprint?: string | null;
+  providerProfile?: string | null;
   capabilities?: Record<string, unknown>;
   executionContext?: WorkbenchLaunchExecutionContext | null;
   bodyPreview?: string | null;
diff --git a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue
index 3243636f..aab75033 100644
--- a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue
+++ b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoPageShell.vue
@@ -23,6 +23,7 @@ import { useMdtodoTaskMutation } from "@/composables/mdtodo/useMdtodoTaskMutatio
 import { useMdtodoReportPreview } from "@/composables/mdtodo/useMdtodoReportPreview";
 import { useMdtodoWorkbenchLaunch } from "@/composables/mdtodo/useMdtodoWorkbenchLaunch";
 import { fileDisplayName } from "@/composables/mdtodo/useMdtodoDisplay";
+import { useWorkbenchStore } from "@/stores/workbench";
 
 const router = useRouter();
 const route = useRoute();
@@ -40,6 +41,7 @@ const taskData = useMdtodoTaskData();
 const mutation = useMdtodoTaskMutation();
 const report = useMdtodoReportPreview();
 const launch = useMdtodoWorkbenchLaunch(router);
+const workbench = useWorkbenchStore();
 
 // Selection state (URL is authority; these mirror the URL)
 const selectedSourceId = ref<string | null>(null);
@@ -54,6 +56,8 @@ const taskPaneCollapsed = ref(false);
 const taskPaneWidth = ref(26);
 const reportPaneCollapsed = ref(false);
 const reportPaneWidth = ref(50);
+const providerOptionsReady = ref(false);
+const providerOptionsError = ref<string | null>(null);
 
 // Dialog visibility
 const showInfo = ref(false);
@@ -109,7 +113,22 @@ const selectedTaskBodyHtml = computed(() => report.markdownToHtml(selectedTaskBo
 const reportPreviewHtml = computed(() => report.markdownToHtml(report.reportPreview.value?.content ?? ""));
 const selectedFileName = computed(() => selectedFile.value ? fileDisplayName(selectedFile.value) : selectedTask.value?.fileRef || "-");
 const reportPaneOpen = computed(() => Boolean(report.reportPreview.value));
-const workbenchLaunchEnabled = computed(() => launch.isLaunchEnabled(source.navigation.value));
+const selectedProviderValue = computed(() => String(workbench.providerProfile || "").trim());
+const selectedProviderOption = computed(() => workbench.providerOptions.find((option) => option.value === selectedProviderValue.value) ?? null);
+const providerLaunchBlocker = computed(() => {
+  if (!providerOptionsReady.value) return "模型通道校验中";
+  if (providerOptionsError.value) return providerOptionsError.value;
+  if (!selectedProviderValue.value) return "模型通道未选择";
+  const option = selectedProviderOption.value;
+  if (option?.configured === false) return `模型通道 ${option.label || option.value} 未配置`;
+  return null;
+});
+const workbenchLaunchCapabilityEnabled = computed(() => launch.isLaunchEnabled(source.navigation.value));
+const workbenchLaunchBlocker = computed(() => {
+  if (!workbenchLaunchCapabilityEnabled.value) return "Workbench Launch capability unavailable";
+  return providerLaunchBlocker.value;
+});
+const workbenchLaunchEnabled = computed(() => !workbenchLaunchBlocker.value);
 const launchButtonDisabled = computed(() => !selectedTask.value || !workbenchLaunchEnabled.value || launch.launchLoading.value);
 const selectedSourceCanReindex = computed(() => Boolean(selectedSourceId.value && !taskData.taskLoading.value && !source.sourceReindexLoading.value));
 function reportLinksOnly(links: MdtodoTaskLinkRecord[]): MdtodoTaskLinkRecord[] {
@@ -131,7 +150,25 @@ function projectedReportLink(task: MdtodoTaskRecord, linkCount: number): MdtodoT
   };
 }
 
-onMounted(() => void loadPage());
+onMounted(() => {
+  void refreshMdtodoProviderOptions();
+  void loadPage();
+});
+
+async function refreshMdtodoProviderOptions(): Promise<void> {
+  providerOptionsReady.value = false;
+  providerOptionsError.value = null;
+  const ok = await workbench.refreshProviderOptions();
+  providerOptionsReady.value = true;
+  if (!ok) {
+    providerOptionsError.value = "模型通道目录不可用";
+    return;
+  }
+  const current = selectedProviderOption.value;
+  if (current?.configured !== false) return;
+  const fallback = workbench.providerOptions.find((option) => option.configured !== false);
+  if (fallback) workbench.setProviderProfile(fallback.value);
+}
 
 watch(selectedSourceId, async (sourceId) => {
   if (!sourceId || loading.value || selection.applyingRouteSelection.value) return;
@@ -353,7 +390,7 @@ function closeReport(): void {
 async function launchWorkbench(): Promise<void> {
   const task = selectedTask.value;
   if (!task || launchButtonDisabled.value) return;
-  const result = await launch.launchTask(task, selectedTaskBody.value, selectedTaskLinks.value, selectedFileName.value, source.navigation.value);
+  const result = await launch.launchTask(task, selectedTaskBody.value, selectedTaskLinks.value, selectedFileName.value, source.navigation.value, selectedProviderValue.value);
   if (result) {
     await taskData.loadLinks(task.taskRef);
     await launch.navigateToWorkbench(result);
@@ -478,7 +515,11 @@ function setError(err: unknown): void {
           :launch-loading="launch.launchLoading.value"
           :launch-error="launch.launchError.value"
           :launch-enabled="workbenchLaunchEnabled"
+          :launch-blocker="workbenchLaunchBlocker"
+          :provider-profile="workbench.providerProfile"
+          :provider-options="workbench.providerOptions"
           :navigation="source.navigation.value"
+          @update:provider-profile="workbench.setProviderProfile($event)"
           @update:edit-title="editTitle = $event"
           @update:edit-status="editStatus = $event"
           @update:edit-body="editBody = $event"
diff --git a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue
index a1fb8f3f..2b2021cd 100644
--- a/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue
+++ b/web/hwlab-cloud-web/src/components/mdtodo/MdtodoTaskPanel.vue
@@ -4,6 +4,8 @@
 <script setup lang="ts">
 import { computed } from "vue";
 import type { MdtodoTaskDetailRecord, MdtodoTaskLinkRecord, MdtodoTaskRecord, ProjectNavigationResponse } from "@/api";
+import type { ProviderProfile } from "@/types";
+import type { ProviderProfileOption } from "@/stores/workbench-session";
 import LoadingState from "@/components/common/LoadingState.vue";
 import EmptyState from "@/components/common/EmptyState.vue";
 
@@ -27,6 +29,9 @@ const props = defineProps<{
   launchLoading: boolean;
   launchError: string | null;
   launchEnabled: boolean;
+  launchBlocker: string | null;
+  providerProfile: ProviderProfile;
+  providerOptions: ProviderProfileOption[];
   navigation: ProjectNavigationResponse | null;
 }>();
 
@@ -34,6 +39,7 @@ const emit = defineEmits<{
   "update:editTitle": [value: string];
   "update:editStatus": [value: string];
   "update:editBody": [value: string];
+  "update:providerProfile": [value: ProviderProfile];
   beginTitleEdit: [];
   cancelTitleEdit: [];
   saveTaskBasics: [];
@@ -80,6 +86,14 @@ function normalizeTaskText(value?: string | null): string {
           <option value="blocked">阻塞</option>
         </select>
         <button class="btn btn-secondary" type="button" data-testid="mdtodo-status-save" :disabled="mutationLoading" @click="emit('saveTaskBasics')">保存状态</button>
+        <label class="provider-field" for="mdtodo-provider-profile">
+          <span>模型通道</span>
+          <select id="mdtodo-provider-profile" :value="providerProfile" data-testid="mdtodo-provider-profile" :disabled="launchLoading" aria-label="模型通道" @change="emit('update:providerProfile', ($event.target as HTMLSelectElement).value)">
+            <option v-for="option in providerOptions" :key="option.value" :value="option.value" :disabled="option.configured === false">
+              {{ option.label }}{{ option.configured === false ? ' · 未配置' : '' }}
+            </option>
+          </select>
+        </label>
         <button class="btn btn-primary" type="button" data-testid="mdtodo-workbench-launch" :disabled="!task || !launchEnabled || launchLoading" :aria-disabled="!task || !launchEnabled || launchLoading" @click="emit('launchWorkbench')">{{ launchLoading ? '启动中' : '在 Workbench 执行' }}</button>
       </div>
     </header>
@@ -91,7 +105,7 @@ function normalizeTaskText(value?: string | null): string {
         <p v-if="mutationMessage" class="source-message" data-testid="mdtodo-task-mutation-message">{{ mutationMessage }}</p>
         <p v-if="mutationError" class="source-error" data-testid="mdtodo-task-mutation-error">{{ mutationError }}</p>
         <p v-if="launchError" class="launch-blocker" data-testid="mdtodo-workbench-launch-error">{{ launchError }}</p>
-        <p v-else-if="!launchEnabled" class="launch-blocker" data-testid="mdtodo-workbench-launch-blocker">Workbench Launch capability unavailable</p>
+        <p v-else-if="launchBlocker" class="launch-blocker" data-testid="mdtodo-workbench-launch-blocker">{{ launchBlocker }}</p>
       </div>
 
       <section class="task-detail-content" data-testid="mdtodo-task-editor">
@@ -147,6 +161,9 @@ function normalizeTaskText(value?: string | null): string {
 .inline-editor input { width: 100%; min-width: 0; border: 1px solid #cbd6dd; border-radius: 6px; color: #111827; font: inherit; padding: 8px 9px; }
 .detail-toolbar { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
 .detail-toolbar select { min-width: 108px; height: 32px; border: 1px solid #cbd6dd; border-radius: 6px; background: #fff; color: #111827; padding: 0 8px; font: inherit; font-size: 13px; }
+.provider-field { display: flex; min-width: 218px; align-items: center; gap: 6px; color: #5d6a73; font-size: 12px; font-weight: 850; }
+.provider-field span { white-space: nowrap; }
+.provider-field select { flex: 1 1 150px; min-width: 150px; }
 .task-status-stack { display: grid; min-width: 0; gap: 6px; }
 .task-detail-content { display: grid; min-width: 0; min-height: 0; grid-template-rows: auto minmax(0, 1fr); gap: 0; overflow: hidden; }
 .task-detail-status { display: grid; min-width: 0; gap: 6px; }
@@ -178,6 +195,8 @@ function normalizeTaskText(value?: string | null): string {
 @media (max-width: 640px) {
   .mdtodo-detail-header { flex-direction: column; align-items: stretch; }
   .detail-toolbar { justify-content: flex-start; }
+  .provider-field { width: 100%; justify-content: space-between; }
+  .provider-field select { flex: 1 1 auto; }
   .task-title-block { grid-template-columns: 1fr; }
   .inline-editor { grid-template-columns: 1fr; }
   .task-document-footer { grid-template-columns: 1fr; }
diff --git a/web/hwlab-cloud-web/src/composables/mdtodo/useMdtodoWorkbenchLaunch.ts b/web/hwlab-cloud-web/src/composables/mdtodo/useMdtodoWorkbenchLaunch.ts
index 997645f7..0a1188db 100644
--- a/web/hwlab-cloud-web/src/composables/mdtodo/useMdtodoWorkbenchLaunch.ts
+++ b/web/hwlab-cloud-web/src/composables/mdtodo/useMdtodoWorkbenchLaunch.ts
@@ -25,6 +25,7 @@ export interface WorkbenchLaunchContext {
   mdtodoRootRef?: string | null;
   hwpodWorkspaceArgs?: string | null;
   contextFingerprint?: string | null;
+  providerProfile?: string | null;
   capabilities?: Record<string, unknown>;
   executionContext?: WorkbenchLaunchExecutionContext | null;
   bodyPreview: string;
@@ -136,7 +137,8 @@ export function useMdtodoWorkbenchLaunch(router: Router) {
     body: string,
     links: MdtodoTaskLinkRecord[],
     fileName: string,
-    navigation: ProjectNavigationResponse | null
+    navigation: ProjectNavigationResponse | null,
+    providerProfile: string
   ): Promise<{ sessionId: string; workbenchUrl: string } | null> {
     if (!task.taskRef || !task.projectId) return null;
     const enabled = navigation?.navigation?.capabilities?.workbenchLaunch === true;
@@ -144,14 +146,19 @@ export function useMdtodoWorkbenchLaunch(router: Router) {
       launchError.value = "Workbench Launch capability unavailable";
       return null;
     }
+    const selectedProviderProfile = providerProfile.trim();
+    if (!selectedProviderProfile) {
+      launchError.value = "模型通道未选择";
+      return null;
+    }
     launchLoading.value = true;
     launchError.value = null;
     try {
-      const launchContext = buildContext(task, body, links, fileName);
+      const launchContext = { ...buildContext(task, body, links, fileName), providerProfile: selectedProviderProfile };
       const response = await workbenchAPI.launch({
         projectId: task.projectId,
         taskRef: task.taskRef,
-        providerProfile: "codex",
+        providerProfile: selectedProviderProfile,
         launchContext
       });
       if (!response.ok) throw response;
@@ -163,7 +170,7 @@ export function useMdtodoWorkbenchLaunch(router: Router) {
         message: prompt,
         prompt,
         sessionId,
-        providerProfile: "codex",
+        providerProfile: selectedProviderProfile,
         projectId: task.projectId,
         taskRef: task.taskRef,
         launchContext: authoritativeLaunchContext
diff --git a/web/hwlab-cloud-web/src/stores/workbench-session.ts b/web/hwlab-cloud-web/src/stores/workbench-session.ts
index 16f99903..744c3eaf 100644
--- a/web/hwlab-cloud-web/src/stores/workbench-session.ts
+++ b/web/hwlab-cloud-web/src/stores/workbench-session.ts
@@ -233,7 +233,8 @@ export function providerProfileOptionsFromPayload(payload: unknown, selectedProf
   const record = payload && typeof payload === "object" ? payload as { profiles?: unknown; items?: unknown; data?: { profiles?: unknown; items?: unknown } } : {};
   const raw = Array.isArray(record.profiles) ? record.profiles : Array.isArray(record.items) ? record.items : Array.isArray(record.data?.profiles) ? record.data.profiles : Array.isArray(record.data?.items) ? record.data.items : [];
   const parsed = raw.map((item) => profileOptionFromUnknown(item)).filter((item): item is ProviderProfileOption => Boolean(item));
-  return ensureSelectedProviderProfile(parsed.length > 0 ? parsed.sort(compareProviderProfileOptions) : defaultProviderProfileOptions(selectedProfile), selectedProfile);
+  if (parsed.length > 0) return ensureSelectedProviderProfile(parsed.sort(compareProviderProfileOptions), selectedProfile, true);
+  return defaultProviderProfileOptions(selectedProfile);
 }
 
 export function defaultProviderProfileOptions(selectedProfile: ProviderProfile): ProviderProfileOption[] {
@@ -356,11 +357,11 @@ function profileOptionFromUnknown(item: unknown): ProviderProfileOption | null {
   return { value, label: firstNonEmptyString(record.label, record.displayName, record.title) ?? providerProfileLabel(value), configured: typeof record.configured === "boolean" ? record.configured : undefined };
 }
 
-function ensureSelectedProviderProfile(options: ProviderProfileOption[], selectedProfile: ProviderProfile): ProviderProfileOption[] {
+function ensureSelectedProviderProfile(options: ProviderProfileOption[], selectedProfile: ProviderProfile, markMissingUnconfigured = false): ProviderProfileOption[] {
   const selected = firstNonEmptyString(selectedProfile);
   const unique = uniqueProviderOptions(options);
   if (!selected || unique.some((option) => option.value === selected)) return unique;
-  return uniqueProviderOptions([...unique, { value: selected, label: providerProfileLabel(selected) }]);
+  return uniqueProviderOptions([...unique, { value: selected, label: providerProfileLabel(selected), configured: markMissingUnconfigured ? false : undefined }]);
 }
 
 function uniqueProviderOptions(options: ProviderProfileOption[]): ProviderProfileOption[] {
diff --git a/web/hwlab-cloud-web/src/stores/workbench.ts b/web/hwlab-cloud-web/src/stores/workbench.ts
index 7e441e14..b71ee0f3 100644
--- a/web/hwlab-cloud-web/src/stores/workbench.ts
+++ b/web/hwlab-cloud-web/src/stores/workbench.ts
@@ -1111,9 +1111,10 @@ function nonBlockingProjection(projection: ProjectionDiagnostic | null): Project
     localStorage.setItem("hwlab.workbench.providerProfile.v1", value);
   }
 
-  async function refreshProviderOptions(): Promise<void> {
+  async function refreshProviderOptions(): Promise<boolean> {
     const response = await api.providerProfiles.catalog();
     providerOptions.value = response.ok ? providerProfileOptionsFromPayload(response.data, providerProfile.value) : defaultProviderProfileOptions(providerProfile.value);
+    return response.ok === true;
   }
 
   function rememberRecentDraft(text: string): void {