diff --git a/docs/BRD_IMPLEMENTATION_AUDIT.md b/docs/BRD_IMPLEMENTATION_AUDIT.md
index e4351c34..ae3e1ed3 100644
--- a/docs/BRD_IMPLEMENTATION_AUDIT.md
+++ b/docs/BRD_IMPLEMENTATION_AUDIT.md
@@ -25,7 +25,7 @@
 
 | 缺口 | BRD依据 | 当前事实 | 下一步 |
 |---|---|---|---|
-| 正式主管身份、项目范围和数据权限 | 5.4、L1-B、G3 | 代码已有 `aihr_org_snapshot`、岗位/项目过滤和主管接口，但正式上游快照的手机号关联不足，线上视觉测试不能替代真实主管身份验证 | 用正式组织同步 dry-run 先核对项目、岗位、`ext_party_id`、手机号；只在上游数据合规后执行正式同步 |
+| 正式主管身份、项目范围和数据权限 | 5.4、L1-B、G3 | 代码已有 `aihr_org_snapshot`、岗位/项目过滤和主管接口；移动端角色查询失败已改为安全降级员工端，但正式上游快照的手机号关联仍不足，线上视觉测试不能替代真实主管身份验证 | 用正式组织同步 dry-run 先核对项目、岗位、`ext_party_id`、手机号；只在上游数据合规后执行正式同步 |
 | M5 正式试点证据 | L1-B/C/D、G1/G3/G4 | 本地严格门禁和导出能力已存在；本地样本不能代表正式窗口，不能用 seed/烟测数据替代 | 固定 1–2 个住宅项目和窗口，按唯一在职身份采集训练、人工校准、SOP 评审、完训率和满意度 |
 | AI 分数与人工复核边界 | 4.1、4.5、G1/G2 | 面试和对练已有人工复核/校准入口；仍需在正式试点报告中保留“AI 建议、人工可否决”的证据 | 导出中保留 AI 分、人工分、复核人、复核时间和最终采用值 |
 
diff --git a/mobile-uni/src/services/position.ts b/mobile-uni/src/services/position.ts
index 4128df64..320aabfd 100644
--- a/mobile-uni/src/services/position.ts
+++ b/mobile-uni/src/services/position.ts
@@ -39,7 +39,9 @@ export const hydrateMobileRole = async (): Promise<RoleKey> => {
     uni.setStorageSync(roleKey, role);
     return role;
   } catch {
-    return (uni.getStorageSync(roleKey) === 'supervisor' ? 'supervisor' : 'user') as RoleKey;
+    // ponytail: role lookup failure fails closed; never reuse a stale supervisor cache.
+    uni.removeStorageSync(roleKey);
+    return 'user';
   }
 };
 
diff --git a/mobile-uni/tests/mobile-user-pages.test.mjs b/mobile-uni/tests/mobile-user-pages.test.mjs
index 9a49ee0f..623f845e 100644
--- a/mobile-uni/tests/mobile-user-pages.test.mjs
+++ b/mobile-uni/tests/mobile-user-pages.test.mjs
@@ -90,6 +90,7 @@ test('登录后按组织身份切换主管首页', async () => {
   assert.match(source, /\/api\/aihr\/mobile\/me/);
   assert.match(source, /role === 'supervisor'/);
   assert.match(source, /pages\/supervisor\/index\/index/);
+  assert.match(source, /removeStorageSync\(roleKey\)/);
 });
 
 test('员工首页保留师傅区、语音条、今日安排、我的地图四段结构', async () => {
diff --git a/scripts/demo-check.sh b/scripts/demo-check.sh
index 6d69f23d..bd69e82a 100755
--- a/scripts/demo-check.sh
+++ b/scripts/demo-check.sh
@@ -305,6 +305,7 @@ contains mobile-uni/src/pages/user/sop/index.vue "有帮助"
 contains mobile-uni/src/pages/user/sop/index.vue "没解决"
 contains mobile-uni/src/services/knowledge.ts "/api/knowledge/summary-card"
 contains mobile-uni/src/services/knowledge.ts "/api/knowledge/position-sop"
+contains mobile-uni/src/services/position.ts "removeStorageSync(roleKey)"
 contains mobile-uni/src/services/case.ts "/api/knowledge/case/upload"
 contains mobile-uni/src/services/candidate.ts "/api/recruit/interview/start"
 contains mobile-uni/src/services/candidate.ts "/api/aihr/mobile/candidate/materials"