feat: make mode stage a full workspace

app/canvas/[id]/page.tsx

@@ -957,78 +957,99 @@ export default function CanvasEditorPage({ params }: PageProps) {
             </div>
           ) : (
             <div className="absolute inset-0 flex pt-[72px]">
-              <div className="min-w-0 flex-1 border-r bg-white dark:bg-zinc-950">
-                <div className="flex h-full flex-col">
-                  <div className="border-b p-4">
-                    <div className="flex items-start justify-between gap-3">
-                      <div>
-                        <div className="flex items-center gap-2 text-sm font-semibold">
-                          <Wand2 className="h-4 w-4 text-amber-500" />
-                          生图模式
-                        </div>
-                        <div className="mt-1 text-xs text-muted-foreground">
-                          先在本页选择生图模式，再使用上方 SKU / SPU 取图，右侧会自动进入对应图片槽位。
-                        </div>
-                        <div className="mt-2 inline-flex items-center rounded-full bg-muted px-2.5 py-1 text-[11px] text-muted-foreground">
-                          第 2 步 / 2 步
+              <div className="flex h-full w-full bg-[#f5f7fb] dark:bg-zinc-950">
+                <div className="w-[520px] shrink-0 border-r bg-white dark:bg-zinc-950">
+                  <div className="flex h-full flex-col">
+                    <div className="border-b p-4">
+                      <div className="flex items-start justify-between gap-3">
+                        <div>
+                          <div className="flex items-center gap-2 text-sm font-semibold">
+                            <Wand2 className="h-4 w-4 text-amber-500" />
+                            生图模式
+                          </div>
+                          <div className="mt-1 text-xs text-muted-foreground">
+                            先在本页选择生图模式，再使用上方 SKU / SPU 取图，右侧全屏工作区会自动进入对应图片槽位并展示结果。
+                          </div>
+                          <div className="mt-2 inline-flex items-center rounded-full bg-muted px-2.5 py-1 text-[11px] text-muted-foreground">
+                            第 2 步 / 2 步
+                          </div>
                         </div>
+                        <Button
+                          type="button"
+                          variant="outline"
+                          size="sm"
+                          onClick={() => setCurrentAgentStage("workflow")}
+                        >
+                          <ArrowLeft className="mr-1 h-4 w-4" />
+                          返回上一步
+                        </Button>
                       </div>
-                      <Button
-                        type="button"
-                        variant="outline"
-                        size="sm"
-                        onClick={() => setCurrentAgentStage("workflow")}
-                      >
-                        <ArrowLeft className="mr-1 h-4 w-4" />
-                        返回上一步
-                      </Button>
+                      {!workflowProgress.isComplete ? (
+                        <div className="mt-3 rounded-xl border border-amber-200 bg-amber-50 px-3 py-2 text-xs text-amber-800">
+                          第一步尚未完成，你也可以在当前直接继续生图模式选择。
+                        </div>
+                      ) : null}
                     </div>
-                    {!workflowProgress.isComplete ? (
-                      <div className="mt-3 rounded-xl border border-amber-200 bg-amber-50 px-3 py-2 text-xs text-amber-800">
-                        第一步尚未完成，你也可以在当前直接继续生图模式选择。
+                    <div className="min-h-0 flex-1 overflow-y-auto">
+                      <div className="space-y-4 p-4">
+                        <AgentWorkflowMaterialSelectionPanel
+                          inputs={workflowInputs}
+                          onInputsChange={setWorkflowInputs}
+                          materials={workflowMaterials}
+                          onMaterialsChange={setWorkflowMaterials}
+                          title="SKU / SPU 获取图片"
+                          description="第二步直接在这里搜索主 SKU / SPU 与搭配 SKU 图片，选中的图片会自动进入右侧对应产品槽位。"
+                          disabled={!selectedAgentPresetId}
+                          disabledHint="请先选择一个生图模式，系统才能把你选中的图片自动送入对应生图槽位。"
+                        />
+                        <AgentPresetPanel
+                          embedded
+                          layout="inline"
+                          selectedPresetId={selectedAgentPresetId}
+                          onSelectPreset={setSelectedAgentPresetId}
+                          title="生图模式"
+                          description="先选择生图模式，再在上方搜索 SKU / SPU 图片并自动进入对应槽位"
+                          searchPlaceholder="搜索生图模式"
+                          publicTitle="公共生图模式"
+                          privateTitle="我的生图模式"
+                        />
                       </div>
-                    ) : null}
-                  </div>
-                  <div className="min-h-0 flex-1 overflow-y-auto">
-                    <div className="space-y-4 p-4">
-                      <AgentWorkflowMaterialSelectionPanel
-                        inputs={workflowInputs}
-                        onInputsChange={setWorkflowInputs}
-                        materials={workflowMaterials}
-                        onMaterialsChange={setWorkflowMaterials}
-                        title="SKU / SPU 获取图片"
-                        description="第二步直接在这里搜索主 SKU / SPU 与搭配 SKU 图片，选中的图片会自动进入右侧对应产品槽位。"
-                        disabled={!selectedAgentPresetId}
-                        disabledHint="请先选择一个生图模式，系统才能把你选中的图片自动送入对应生图槽位。"
-                      />
-                      <AgentPresetPanel
-                        embedded
-                        layout="inline"
-                        selectedPresetId={selectedAgentPresetId}
-                        onSelectPreset={setSelectedAgentPresetId}
-                        title="生图模式"
-                        description="先选择生图模式，再在上方搜索 SKU / SPU 图片并自动进入对应槽位"
-                        searchPlaceholder="搜索生图模式"
-                        publicTitle="公共生图模式"
-                        privateTitle="我的生图模式"
-                      />
                     </div>
                   </div>
                 </div>
-              </div>
 
-              <div
-                className="shrink-0 border-l bg-white dark:bg-zinc-950"
-                style={{ width: FLOATING_PANEL_WIDTH }}
-              >
-                <div className="h-full overflow-hidden">
-                  <CanvasChatPanel
-                    chatId={`canvas-${id}`}
-                    onClose={() => {}}
-                    selectedAgentPresetId={isAgentFeatureEnabled ? selectedAgentPresetId : null}
-                    chatScope="agent"
-                    workflowContext={workflowContext}
-                  />
+                <div className="min-w-0 flex-1">
+                  <div className="flex h-full flex-col">
+                    <div className="flex items-start justify-between gap-3">
+                      <div>
+                        <div className="text-sm font-semibold">执行工作区</div>
+                        <div className="mt-1 text-xs text-muted-foreground">
+                          这里不再是侧边对话框，而是全屏生图工作台。生成结果、槽位操作和补充指令都在这里完成。
+                        </div>
+                      </div>
+                      <div className="flex items-center gap-2">
+                        {selectedAgentPresetId ? (
+                          <div className="inline-flex items-center rounded-full bg-white px-3 py-1 text-xs font-medium text-foreground shadow-sm dark:bg-zinc-900">
+                            当前模式已选
+                          </div>
+                        ) : (
+                          <div className="inline-flex items-center rounded-full bg-white px-3 py-1 text-xs text-muted-foreground shadow-sm dark:bg-zinc-900">
+                            请选择左侧生图模式
+                          </div>
+                        )}
+                      </div>
+                    </div>
+                    <div className="min-h-0 flex-1 overflow-hidden rounded-tl-[24px] border-t border-l bg-white shadow-[inset_0_1px_0_rgba(255,255,255,0.8)] dark:border-white/10 dark:bg-zinc-950">
+                      <CanvasChatPanel
+                        chatId={`canvas-${id}`}
+                        onClose={undefined}
+                        selectedAgentPresetId={isAgentFeatureEnabled ? selectedAgentPresetId : null}
+                        chatScope="agent"
+                        workflowContext={workflowContext}
+                        presentation="workspace"
+                      />
+                    </div>
+                  </div>
                 </div>
               </div>
             </div>

components/canvas/CanvasChatPanel.tsx

@@ -114,6 +114,7 @@ interface CanvasChatPanelProps {
   selectedAgentPresetId?: string | null;
   chatScope?: "canvas" | "agent";
   workflowContext?: AgentWorkflowComposerContext | null;
+  presentation?: "panel" | "workspace";
 }
 
 type VideoStoryboardStreamData =
@@ -1686,6 +1687,7 @@ export function CanvasChatPanel({
   selectedAgentPresetId,
   chatScope = "canvas",
   workflowContext = null,
+  presentation = "panel",
 }: CanvasChatPanelProps) {
   const { data: session } = useSession();
   const [input, setInput] = useState("");
@@ -7882,9 +7884,15 @@ export function CanvasChatPanel({
     const fallbackTitle = String(projectTitle || "").trim();
     return fallbackTitle || "未命名画布";
   }, [activeSessionTitle, projectTitle]);
+  const isWorkspacePresentation = presentation === "workspace";
 
   return (
-    <div className="relative flex h-full min-h-0 flex-col bg-white dark:bg-zinc-950">
+    <div
+      className={cn(
+        "relative flex h-full min-h-0 flex-col",
+        isWorkspacePresentation ? "bg-transparent" : "bg-white dark:bg-zinc-950"
+      )}
+    >
       {/* 全局遮罩提示 - 当处于画布选图模式时显示 */}
       {detailSlotPickerIndex !== null && (
         <div className="absolute inset-0 z-50 flex flex-col items-center justify-center bg-white dark:bg-zinc-950 animate-in fade-in duration-200">
@@ -7912,111 +7920,112 @@ export function CanvasChatPanel({
           </div>
         </div>
       )}
-      {/* Header - Minimal with Icons */}
-      <div className="z-20 flex items-center justify-between gap-3 p-4 pb-2">
-        <div className="min-w-0 flex flex-1 items-center gap-2 pr-2">
-          <span className="inline-flex h-5 w-5 items-center justify-center rounded-md bg-[#eef2f7] text-[#6b7280]">
-            <MessageCircle className="h-3.5 w-3.5" />
-          </span>
-          <h2
-            className="min-w-0 flex-1 truncate text-[14px] font-semibold leading-tight tracking-tight text-[#111827]"
-            title={displayCanvasName}
-          >
-            {displayCanvasName}
-          </h2>
-        </div>
-        <div className="flex shrink-0 items-center">
-        <div className="flex items-center gap-1">
-          <Button 
-            variant="ghost" 
-            size="icon" 
-            className="h-8 w-8 rounded-full hover:bg-muted"
-            onClick={createNewChatSession}
-            title="新建聊天窗口"
-          >
-            <Plus className="h-4 w-4" />
-          </Button>
-          <div className="relative" ref={sessionMenuRef}>
-            <Button
-              variant="ghost"
-              size="icon"
-              className={cn(
-                "h-8 w-8 rounded-full hover:bg-muted",
-                isSessionMenuOpen && "bg-muted"
-              )}
-              onClick={() => setIsSessionMenuOpen((open) => !open)}
-              title="聊天窗口记录"
+      {!isWorkspacePresentation ? (
+        <div className="z-20 flex items-center justify-between gap-3 p-4 pb-2">
+          <div className="min-w-0 flex flex-1 items-center gap-2 pr-2">
+            <span className="inline-flex h-5 w-5 items-center justify-center rounded-md bg-[#eef2f7] text-[#6b7280]">
+              <MessageCircle className="h-3.5 w-3.5" />
+            </span>
+            <h2
+              className="min-w-0 flex-1 truncate text-[14px] font-semibold leading-tight tracking-tight text-[#111827]"
+              title={displayCanvasName}
             >
-              <History className="h-4 w-4" />
-            </Button>
-            {isSessionMenuOpen && (
-              <div className="absolute right-0 top-10 w-64 rounded-xl border bg-white dark:bg-zinc-950 shadow-xl p-2">
-                <div className="px-2 py-1 text-xs text-muted-foreground">聊天窗口记录</div>
-                <div className="max-h-56 overflow-y-auto space-y-1">
-                  {chatSessions.length === 0 ? (
-                    <div className="px-2 py-2 text-xs text-muted-foreground">暂无记录</div>
-                  ) : (
-                    chatSessions.map((session, index) => {
-                      const isActive = session.id === activeChatId;
-                      const timeLabel = new Date(session.updatedAt).toLocaleTimeString([], {
-                        hour: "2-digit",
-                        minute: "2-digit",
-                      });
-                      return (
-                        <button
-                          key={session.id}
-                          type="button"
-                          className={cn(
-                            "w-full text-left rounded-lg px-2.5 py-2 transition-colors",
-                            isActive
-                              ? "bg-primary/10 text-primary"
-                              : "hover:bg-muted"
-                          )}
-                          onClick={() => switchToSession(session.id)}
-                        >
-                          <div className="text-sm font-medium truncate">
-                            {session.title || `对话 ${index + 1}`}
-                          </div>
-                          <div className="text-[11px] text-muted-foreground mt-0.5">
-                            最近更新 {timeLabel}
-                          </div>
-                        </button>
-                      );
-                    })
-                  )}
-                </div>
-              </div>
-            )}
+              {displayCanvasName}
+            </h2>
+          </div>
+          <div className="flex shrink-0 items-center">
+            <div className="flex items-center gap-1">
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-8 w-8 rounded-full hover:bg-muted"
+                onClick={createNewChatSession}
+                title="新建聊天窗口"
+              >
+                <Plus className="h-4 w-4" />
+              </Button>
+              <div className="relative" ref={sessionMenuRef}>
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  className={cn(
+                    "h-8 w-8 rounded-full hover:bg-muted",
+                    isSessionMenuOpen && "bg-muted"
+                  )}
+                  onClick={() => setIsSessionMenuOpen((open) => !open)}
+                  title="聊天窗口记录"
+                >
+                  <History className="h-4 w-4" />
+                </Button>
+                {isSessionMenuOpen && (
+                  <div className="absolute right-0 top-10 w-64 rounded-xl border bg-white dark:bg-zinc-950 shadow-xl p-2">
+                    <div className="px-2 py-1 text-xs text-muted-foreground">聊天窗口记录</div>
+                    <div className="max-h-56 overflow-y-auto space-y-1">
+                      {chatSessions.length === 0 ? (
+                        <div className="px-2 py-2 text-xs text-muted-foreground">暂无记录</div>
+                      ) : (
+                        chatSessions.map((session, index) => {
+                          const isActive = session.id === activeChatId;
+                          const timeLabel = new Date(session.updatedAt).toLocaleTimeString([], {
+                            hour: "2-digit",
+                            minute: "2-digit",
+                          });
+                          return (
+                            <button
+                              key={session.id}
+                              type="button"
+                              className={cn(
+                                "w-full text-left rounded-lg px-2.5 py-2 transition-colors",
+                                isActive
+                                  ? "bg-primary/10 text-primary"
+                                  : "hover:bg-muted"
+                              )}
+                              onClick={() => switchToSession(session.id)}
+                            >
+                              <div className="text-sm font-medium truncate">
+                                {session.title || `对话 ${index + 1}`}
+                              </div>
+                              <div className="text-[11px] text-muted-foreground mt-0.5">
+                                最近更新 {timeLabel}
+                              </div>
+                            </button>
+                          );
+                        })
+                      )}
+                    </div>
+                  </div>
+                )}
+              </div>
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-8 w-8 rounded-full hover:bg-muted"
+                onClick={(e) => {
+                  e.preventDefault();
+                  e.stopPropagation();
+                  console.log("[CanvasChatPanel] File list button clicked");
+                  if (onOpenFileList) {
+                    onOpenFileList();
+                  }
+                }}
+                title="已生成文件列表"
+              >
+                <LayoutGrid className="h-4 w-4" />
+              </Button>
+              <Button
+                variant="ghost"
+                size="icon"
+                className="h-8 w-8 rounded-full hover:bg-muted"
+                onClick={onClose}
+                disabled={!onClose}
+                title="收起聊天面板"
+              >
+                <ArrowRightToLine className="h-4 w-4" />
+              </Button>
+            </div>
           </div>
-          <Button 
-            variant="ghost" 
-            size="icon" 
-            className="h-8 w-8 rounded-full hover:bg-muted"
-            onClick={(e) => {
-              e.preventDefault();
-              e.stopPropagation();
-              console.log('[CanvasChatPanel] File list button clicked');
-              if (onOpenFileList) {
-                onOpenFileList();
-              }
-            }}
-            title="已生成文件列表"
-          >
-            <LayoutGrid className="h-4 w-4" />
-          </Button>
-          <Button
-            variant="ghost"
-            size="icon"
-            className="h-8 w-8 rounded-full hover:bg-muted"
-            onClick={onClose}
-            disabled={!onClose}
-            title="收起聊天面板"
-          >
-            <ArrowRightToLine className="h-4 w-4" />
-          </Button>
         </div>
-        </div>
-      </div>
+      ) : null}
       
       {/* 消息列表 */}
       {isDetailEmptyState ? (
@@ -8025,7 +8034,8 @@ export function CanvasChatPanel({
       <div
         key={`${activeChatId}-${messageViewportKey}`}
         className={cn(
-          "flex-1 min-h-0 overflow-y-auto overflow-x-hidden p-4",
+          "flex-1 min-h-0 overflow-y-auto overflow-x-hidden",
+          isWorkspacePresentation ? "p-6" : "p-4",
           isDetailGenerationMode && renderableVisibleMessages.length === 0
             ? "pt-10"
             : "pt-4"
@@ -8659,7 +8669,14 @@ export function CanvasChatPanel({
       ) : null}
       
       {/* 底部输入区域 - 混合输入（图片标签+文字可自由混合） */}
-      <div className="p-4 bg-white dark:bg-zinc-950 border-t">
+      <div
+        className={cn(
+          "border-t",
+          isWorkspacePresentation
+            ? "bg-white/92 p-5 backdrop-blur-sm dark:bg-zinc-950/92"
+            : "bg-white p-4 dark:bg-zinc-950"
+        )}
+      >
         <div
           className="relative flex flex-col bg-card rounded-3xl border transition-all duration-200 focus-within:border-primary/50 focus-within:bg-background"
           data-canvas-chat-input-anchor="true"