修复作品架已发布卡片分享入口

为作品架分享按钮补充可见底色与回归测试
将已发布作品卡分享动作接入统一发布分享弹窗
同步玩法链路文档中的作品架分享口径

src/components/custom-world-home/CustomWorldCreationHub.tsx

@@ -12,8 +12,10 @@ import type { WoodenFishWorkSummaryResponse } from '../../../packages/shared/src
 import type { CustomWorldLibraryEntry } from '../../../packages/shared/src/contracts/runtime';
 import type { SquareHoleWorkSummary } from '../../../packages/shared/src/contracts/squareHoleWorks';
 import type { VisualNovelWorkSummary } from '../../../packages/shared/src/contracts/visualNovel';
+import { resolveSelectionStageFromPath } from '../../routing/appPageRoutes';
 import type { CreationEntryConfig } from '../../services/creationEntryConfigService';
 import type { CustomWorldProfile } from '../../types';
+import type { PublishShareModalPayload } from '../common/publishShareModalModel';
 import type {
   PlatformCreationTypeCard,
   PlatformCreationTypeId,
@@ -99,6 +101,7 @@ type CustomWorldCreationHubProps = {
     item: CreationWorkShelfItem,
   ) => CreationWorkShelfRuntimeState | null;
   onOpenShelfItem?: (item: CreationWorkShelfItem) => void;
+  onShareWork?: ((payload: PublishShareModalPayload) => void) | null;
   // 中文注释：底部加号入口可传入后端作品架摘要，用于推导最近使用过的模板。
   recentWorkItems?: CreationWorkShelfItem[];
   mode?: 'full' | 'start-only' | 'works-only';
@@ -167,6 +170,41 @@ function writeWorkMetricSnapshot(items: CreationWorkShelfItem[]) {
   }
 }
 
+function resolveShelfShareStage(
+  sharePath: string,
+): PublishShareModalPayload['stage'] | null {
+  let pathname = '';
+  try {
+    pathname = new URL(sharePath, 'https://genarrative.local').pathname;
+  } catch {
+    pathname = sharePath.split(/[?#]/u)[0] ?? '';
+  }
+
+  const stage = resolveSelectionStageFromPath(pathname);
+  return stage === 'platform' ? null : stage;
+}
+
+function buildCreationWorkShelfSharePayload(
+  item: CreationWorkShelfItem,
+): PublishShareModalPayload | null {
+  const publicWorkCode = item.publicWorkCode?.trim();
+  const sharePath = item.sharePath?.trim();
+  if (!publicWorkCode || !sharePath) {
+    return null;
+  }
+
+  const stage = resolveShelfShareStage(sharePath);
+  if (!stage) {
+    return null;
+  }
+
+  return {
+    title: item.title,
+    publicWorkCode,
+    stage,
+  };
+}
+
 /** 渲染底部加号创作入口页与草稿作品架，最近创作复用最近使用过的模板入口。 */
 export function CustomWorldCreationHub({
   items,
@@ -216,6 +254,7 @@ export function CustomWorldCreationHub({
   onDeleteVisualNovel = null,
   getWorkState,
   onOpenShelfItem,
+  onShareWork = null,
   recentWorkItems: recentWorkSourceItems,
   mode = 'full',
 }: CustomWorldCreationHubProps) {
@@ -406,6 +445,17 @@ export function CustomWorldCreationHub({
     return item.actions.delete ?? null;
   }
 
+  function buildShareAction(item: CreationWorkShelfItem) {
+    const payload = buildCreationWorkShelfSharePayload(item);
+    if (!payload) {
+      return null;
+    }
+
+    return () => {
+      onShareWork?.(payload);
+    };
+  }
+
   function buildPointIncentiveAction(item: CreationWorkShelfItem) {
     return item.actions.claimPointIncentive ?? null;
   }
@@ -481,6 +531,7 @@ export function CustomWorldCreationHub({
                   }}
                   onDelete={buildDeleteAction(item)}
                   deleteBusy={deletingWorkId === item.id}
+                  onShare={buildShareAction(item)}
                   onClaimPointIncentive={buildPointIncentiveAction(item)}
                   pointIncentiveBusy={
                     item.source.kind === 'puzzle' &&