锁定移动壳原生分享失败响应

移动壳原生分享面板失败返回稳定错误

移动壳分享测试覆盖原生失败不外泄

移动壳配置检查补充分享失败边界反查

apps/mobile-shell/scripts/check-config.mjs

@@ -1646,6 +1646,7 @@ for (const snippet of [
   "throw invalidRequest('target is required')",
   'const normalizedTarget = normalizeHostBridgeShareOpenPayload(target);',
   "'share target is invalid'",
+  "message: 'share unavailable'",
   'ok(request, true)',
   'resetMobileHostBridgeShareTargetForTest',
 ]) {
@@ -1669,8 +1670,10 @@ for (const snippet of [
   'resetMobileHostBridgeShareTargetForTest()',
   'uses cached work target when share.open has no explicit payload',
   'keeps the previous cached target when a new target is missing or invalid',
+  'maps native share sheet failures to stable host errors',
   'does not fall back to cached target when explicit payload is unsafe',
   'rejects empty share requests before opening native share sheet',
+  "message: 'share unavailable'",
   'https://app.genarrative.world/works/detail?work=PZ-00000001',
   'javascript:alert(1)',
   'expect(Share.share).not.toHaveBeenCalled()',