feat: gate claw runtime selection by availability

src/components/master-agent-prompt-memory-client.tsx

@@ -24,6 +24,13 @@ type MemoryDraft = {
   sourceMessageId: string;
 };
 
+type ClawAvailability = {
+  status: "disabled" | "misconfigured" | "ready";
+  selectable: boolean;
+  reason: string;
+  reasonLabel: string;
+};
+
 const memoryScopeOptions: Array<{ value: MasterMemoryScope; label: string }> = [
   { value: "global", label: "通用记忆" },
   { value: "project", label: "项目记忆" },
@@ -145,6 +152,7 @@ export function MasterAgentPromptMemoryClient({
   promptPolicy,
   userPrompt,
   projectControls,
+  clawAvailability,
   globalMemories,
   projectMemories,
   anchors,
@@ -153,6 +161,7 @@ export function MasterAgentPromptMemoryClient({
   promptPolicy: MasterAgentPromptPolicy | null;
   userPrompt: UserMasterPrompt | null;
   projectControls: ProjectAgentControls | null;
+  clawAvailability: ClawAvailability;
   globalMemories: MasterAgentMemory[];
   projectMemories: MasterAgentMemory[];
   anchors: MasterAgentChatPageAnchors;
@@ -167,8 +176,10 @@ export function MasterAgentPromptMemoryClient({
     projectControls?.reasoningEffortOverride ?? "",
   );
   const [promptOverride, setPromptOverride] = useState(projectControls?.promptOverride ?? "");
+  const storedClawOverrideUnavailable =
+    projectControls?.backendOverride === "claw-runtime" && !clawAvailability.selectable;
   const [backendOverride, setBackendOverride] = useState(
-    projectControls?.backendOverride === "claw-runtime" ? "claw-runtime" : "",
+    projectControls?.backendOverride === "claw-runtime" && clawAvailability.selectable ? "claw-runtime" : "",
   );
   const [newMemory, setNewMemory] = useState<MemoryDraft>(makeNewMemoryDraft());
   const [memoryDrafts, setMemoryDrafts] = useState<Record<string, MemoryDraft>>(() => {
@@ -185,9 +196,14 @@ export function MasterAgentPromptMemoryClient({
       globalPrompt.trim() ? `【管理员全局主提示词】\n${globalPrompt.trim()}` : null,
       userPromptContent.trim() ? `【用户私有主提示词】\n${userPromptContent.trim()}` : null,
       promptOverride.trim() ? `【当前对话附加提示词】\n${promptOverride.trim()}` : null,
+      backendOverride.trim()
+        ? `【执行后端】\n${backendOverride.trim()}`
+        : storedClawOverrideUnavailable
+          ? "【执行后端】\n默认（Claw Runtime 当前不可用，运行时会自动回退）"
+          : null,
     ].filter(Boolean);
     return sections.length > 0 ? sections.join("\n\n") : "当前还没有组合后的提示词内容。";
-  }, [globalPrompt, userPromptContent, promptOverride]);
+  }, [backendOverride, globalPrompt, promptOverride, storedClawOverrideUnavailable, userPromptContent]);
 
   function updateMemoryDraft(memoryId: string, updater: (draft: MemoryDraft) => MemoryDraft) {
     setMemoryDrafts((current) => ({
@@ -441,10 +457,21 @@ export function MasterAgentPromptMemoryClient({
               className="w-full rounded-xl border border-[#E5E5EA] bg-[#F7F8FA] px-3 py-2 text-[13px] text-[#111111] outline-none"
             >
               <option value="">默认</option>
-              <option value="claw-runtime">Claw Runtime</option>
+              {clawAvailability.selectable ? <option value="claw-runtime">Claw Runtime</option> : null}
             </select>
           </label>
         </div>
+        {!clawAvailability.selectable ? (
+          <div className="rounded-2xl border border-[#F4C7C3] bg-[#FFF7F6] px-4 py-3 text-[12px] leading-6 text-[#B54708]">
+            <div className="font-semibold text-[#912018]">Claw Runtime 当前不可用</div>
+            <div>{clawAvailability.reasonLabel}</div>
+            {storedClawOverrideUnavailable ? (
+              <div className="mt-1 text-[#912018]">
+                当前对话之前保存过 Claw Runtime，运行时会自动回退到默认后端。
+              </div>
+            ) : null}
+          </div>
+        ) : null}
         <TextArea
           label="当前对话附加提示词"
           value={promptOverride}