收口前端平台组件能力

新增 PlatformAsyncStatePanel 统一 profile 异步状态骨架
扩展 PlatformSegmentedTabs 支持滚动 tab 并接入创作入口与发现页
统一 PixelCloseButton 复用 PlatformModalCloseButton 像素关闭能力
抽取平台入口泥点前置提示弹层并收紧阻断语义
补充组件收口文档与共享决策记录

src/components/platform-entry/PlatformDraftGenerationPointNoticeDialog.tsx

@@ -0,0 +1,79 @@
+import { PlatformAcknowledgeStatusDialog } from '../common/PlatformAcknowledgeStatusDialog';
+
+export type DraftGenerationPointNotice =
+  | {
+      kind: 'insufficient-points';
+      requiredPoints: number;
+      currentPoints: number;
+    }
+  | {
+      kind: 'balance-load-failed';
+    };
+
+type PlatformDraftGenerationPointNoticeDialogProps = {
+  notice: DraftGenerationPointNotice | null;
+  onClose: () => void;
+  overlayClassName?: string;
+  panelClassName?: string;
+  zIndexClassName?: string;
+};
+
+function resolveDraftGenerationPointNoticeTitle(
+  notice: DraftGenerationPointNotice,
+) {
+  return notice.kind === 'balance-load-failed' ? '读取泥点余额失败' : '泥点不足';
+}
+
+function resolveDraftGenerationPointNoticeDescription(
+  notice: DraftGenerationPointNotice,
+) {
+  return notice.kind === 'balance-load-failed'
+    ? '当前表单不会丢失，关闭后可继续编辑，稍后再试。'
+    : '当前表单不会丢失，关闭后可继续编辑或补足泥点再继续。';
+}
+
+function resolveDraftGenerationPointNoticeMessage(
+  notice: DraftGenerationPointNotice,
+) {
+  return notice.kind === 'balance-load-failed'
+    ? '请稍后重试。'
+    : `本次需要 ${notice.requiredPoints} 泥点，当前 ${notice.currentPoints} 泥点。`;
+}
+
+/**
+ * 创作前置泥点提示弹层。
+ * 只承接平台入口里“泥点不足 / 读取余额失败”这类阻断提示，避免 FlowShell 直接拼底层状态弹窗。
+ */
+export function PlatformDraftGenerationPointNoticeDialog({
+  notice,
+  onClose,
+  overlayClassName,
+  panelClassName,
+  zIndexClassName,
+}: PlatformDraftGenerationPointNoticeDialogProps) {
+  if (!notice) {
+    return null;
+  }
+
+  return (
+    <PlatformAcknowledgeStatusDialog
+      status="error"
+      title={resolveDraftGenerationPointNoticeTitle(notice)}
+      description={resolveDraftGenerationPointNoticeDescription(notice)}
+      onClose={onClose}
+      showHeader
+      showCloseButton
+      closeOnBackdrop
+      overlayClassName={overlayClassName}
+      panelClassName={panelClassName}
+      zIndexClassName={zIndexClassName}
+      iconClassName={
+        notice.kind === 'balance-load-failed'
+          ? undefined
+          : 'bg-amber-100/80 text-amber-600'
+      }
+    >
+      {resolveDraftGenerationPointNoticeMessage(notice)}
+    </PlatformAcknowledgeStatusDialog>
+  );
+}