fix(agent): Agent 模型选择 - 复用创造页选择器并只展示文本模型

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/components/canvas/canvas-cloud-agent-panel.tsx

@@ -21,7 +21,7 @@ import type { AgentMediaSettings } from "@/services/api/agent";
 import { CanvasAgentImageApprovalSettings } from "./canvas-agent-image-approval-settings";
 import { addSkill, listAddedSkills, listSkills, type Skill, type SkillCategory } from "@/services/api/skills";
 import { clearCloudAgentPendingSubmission, cloudAgentConversationTitle, loadCloudAgentConversations, loadCloudAgentPendingSubmission, saveCloudAgentConversations, saveCloudAgentPendingSubmission, type CloudAgentConversation, type CloudAgentPendingSubmission } from "@/services/cloud-agent-conversations";
-import { logicalModelIDForConfig, modelOptionName, resolveModelRequestConfig, useConfigStore, useEffectiveConfig } from "@/stores/use-config-store";
+import { logicalModelIDForConfig, modelOptionName, resolveModelRequestConfig, selectableModelsByCapability, useConfigStore, useEffectiveConfig } from "@/stores/use-config-store";
 import { useActiveTheme } from "@/stores/canvas/use-canvas-theme-store";
 import { applyAgentCanvasPatches, refreshCanvasAfterAgent, saveRemoteUserDataNow } from "@/services/user-data-sync";
 import { createAgentCanvasSync } from "@/services/agent-canvas-sync";
@@ -99,7 +99,11 @@ export function CanvasCloudAgentPanel({ canvasId, domainProjectId, nodeCount, re
     const currentScope = useRef(conversationScope);
     currentScope.current = conversationScope;
     const running = Boolean(run?.cleanupPending) || run?.status === "running" || run?.status === "queued" || run?.status === "waiting_approval";
-    const selectedModel = config.textModel || config.model || "";
+    const selectedModel = useMemo(() => {
+        const textModels = selectableModelsByCapability(config, "text");
+        const preferred = config.textModel || config.model || "";
+        return textModels.includes(preferred) ? preferred : (textModels[0] || "");
+    }, [config]);
     const reasoningSupported = Boolean(modelCapabilityConfigFor(config, selectedModel).text?.thinking);
     useEffect(() => { if (!reasoningSupported && reasoningMode !== "off") setReasoningMode("off"); }, [reasoningSupported, reasoningMode]);
     const installedSkills = useMemo(() => skills.filter((skill) => skill.isAdded), [skills]);
@@ -946,11 +950,12 @@ function ComposerControls({
                 value={selectedModel}
                 capability="text"
                 onChange={onModelChange}
+                variant="creation"
                 className="!h-8 !min-w-0 !w-36 !max-w-full !border-0 !bg-transparent !px-1.5 !shadow-none"
                 popoverClassName="agent-model-picker-popover"
                 showSelectedPrice={false}
                 showOptionPrices
-                placeholder="选择模型"
+                placeholder="选择文本模型"
             />
             {reasoningSupported ? <Dropdown trigger={["click"]} placement="topLeft" menu={{ items: reasoningMenuItems(reasoningMode, onReasoningModeChange) }}>
                 <button type="button" aria-label="选择 Agent 推理模式" title="推理模式：只用于规划和工具选择" className="flex h-8 shrink-0 items-center gap-1 rounded-md px-2 text-[11px] focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-current/25" style={{ color: reasoningMode === "off" ? theme.node.muted : theme.accent.primary, background: reasoningMode === "off" ? "transparent" : theme.node.fill }}>

web/src/components/canvas/canvas-cloud-agent-settings.tsx

@@ -102,7 +102,7 @@ function SettingsHome({ props, theme, onOpen }: { props: AgentSettingsProps; the
             <section>
                 <SettingLabel label="对话模型" hint="新运行生效" />
                 <div className="min-w-0 rounded-xl px-2 py-1.5" style={{ background: theme.node.fill }}>
-                    <ModelPicker config={props.config} value={props.selectedModel} capability="text" onChange={props.onModelChange} fullWidth showSelectedPrice showOptionPrices placeholder="选择 Agent 模型" className="!border-0 !bg-transparent !shadow-none" />
+                    <ModelPicker config={props.config} value={props.selectedModel} capability="text" onChange={props.onModelChange} variant="creation" fullWidth showSelectedPrice showOptionPrices placeholder="选择文本模型" className="!border-0 !bg-transparent !shadow-none" popoverClassName="agent-model-picker-popover" />
                 </div>
             </section>
             <section>

web/src/components/canvas/canvas-cloud-agent.css

@@ -3,6 +3,11 @@
     overscroll-behavior: contain;
 }
 
+/* Agent 浮窗高于普通画布层，模型菜单必须叠在对话窗之上。 */
+.agent-model-picker-popover {
+    z-index: calc(var(--z-modal-overlay) + 1000) !important;
+}
+
 /* Flex 子页必须允许收缩，长模型名和 Skill 文案不能决定窗口宽度。 */
 .canvas-agent-panel > div,
 .canvas-agent-settings,