diff --git a/src/main/java/com/yunhai/userbase/controller/api/AppSettingsController.java b/src/main/java/com/yunhai/userbase/controller/api/AppSettingsController.java
index fbd2e42..75bc3aa 100644
--- a/src/main/java/com/yunhai/userbase/controller/api/AppSettingsController.java
+++ b/src/main/java/com/yunhai/userbase/controller/api/AppSettingsController.java
@@ -30,7 +30,6 @@ import com.yunhai.userbase.service.resolve.AccessScopeService;
 import com.yunhai.userbase.utils.PageUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Sort;
-import org.springframework.data.web.SortDefault;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
@@ -195,8 +194,14 @@ public class AppSettingsController {
 
     @GetMapping("/AppList")
     public BasePageResult<ApplicationInfoVo> appList(ApplicationInfoQuery query, BasePageQuery pageQuery,
-                                                     @SortDefault(sort = "sortNo", direction = Sort.Direction.ASC) Sort sort,
                                                      @RequestParam(value = "schoolId", required = false) Integer schoolId) {
+        // 排序必须带唯一兜底键：同键行 MySQL 不保证稳定序，加删一行即整组洗牌（应用列表乱序的根因）。
+        // 全部（未选类别）= id 升序——sort_no 是「类型内」序号，跨类型打平无全局意义；
+        // 选中类别 = 未排序（NULL）沉底 + sortNo 升序 + id 兜底——由 Specification 内嵌 orderBy 实现
+        // （NULL 沉底须 case 表达式，Sort 只走属性解析表达不了；此处传 unsorted，否则 Pageable 排序会覆盖 spec 的 orderBy）
+        Sort sort = query.getCategoryId() == null
+                ? Sort.by(Sort.Direction.ASC, "id")
+                : Sort.unsorted();
         if (isSchoolLevel()) {
             // 学校：仅本校已开通应用，override 合并 名称/描述/图标/排序（多校默认并集，可指定单校）
             AccessScope scope = accessScopeService.resolveCurrentScope();
diff --git a/src/main/java/com/yunhai/userbase/service/impl/AppCategoryService.java b/src/main/java/com/yunhai/userbase/service/impl/AppCategoryService.java
index d931846..03041bf 100644
--- a/src/main/java/com/yunhai/userbase/service/impl/AppCategoryService.java
+++ b/src/main/java/com/yunhai/userbase/service/impl/AppCategoryService.java
@@ -7,6 +7,7 @@ import com.yunhai.platform.utils.model.BoaApp;
 import com.yunhai.platform.utils.model.BoaAppType;
 import com.yunhai.platform.utils.model.BoaRoleInfo;
 import com.yunhai.userbase.config.CacheNames;
+import com.yunhai.userbase.constant.AppNature;
 import com.yunhai.userbase.entity.AppCategory;
 import com.yunhai.userbase.entity.ApplicationInfo;
 import com.yunhai.userbase.entity.SysUserGroupRel;
@@ -220,6 +221,14 @@ public class AppCategoryService implements IAppCategoryService {
             type.setName(category.getName());
             List<BoaApp> boaApps = new ArrayList<>();
             for (ApplicationInfo app : appMap.getOrDefault(category.getId(), Collections.emptyList())) {
+                // 基石应用过滤（口径单点 = AppNature.isBaseApp，与管理端 ①②③⑤ 同侧）：
+                // UserBase 自身 / app_nature=BASE（UserHome、移动门户）不参与用户端应用列表，
+                // 否则超管（findUserAuthorizedAppIds 返回全量）会把基石带进门户 /apps。
+                // 与 manage 端列表（ApplicationInfoService.select，仅同步 isUserbaseSelf 语义、
+                // 保留基石供重置密钥）口径不同，勿合并。
+                if (AppNature.isBaseApp(app.getAppKey(), app.getAppNature())) {
+                    continue;
+                }
                 // 用户权限过滤
                 if (!authorizedAppIds.contains(app.getId())) {
                     continue;
diff --git a/src/main/java/com/yunhai/userbase/service/impl/ApplicationInfoService.java b/src/main/java/com/yunhai/userbase/service/impl/ApplicationInfoService.java
index dd71a6a..c5fab57 100644
--- a/src/main/java/com/yunhai/userbase/service/impl/ApplicationInfoService.java
+++ b/src/main/java/com/yunhai/userbase/service/impl/ApplicationInfoService.java
@@ -294,6 +294,15 @@ public class ApplicationInfoService implements IApplicationInfoService {
                         predicates.add(cb.equal(root.get("categoryId"), query.getCategoryId()));
                     }
                 }
+                // 类别视图的排序只能内嵌在 spec（NULL 沉底须 case 表达式，Pageable 的 Sort 表达不了）。
+                // 生效前提：控制器对该分支传 Sort.unsorted()，否则 Pageable 排序会在此之后 cq.orderBy 整体覆盖；
+                // count 查询不受影响（Spring Data 会剥掉 spec 带入的 orderBy）
+                if (query != null && query.getCategoryId() != null) {
+                    cq.orderBy(
+                            cb.asc(cb.selectCase().when(cb.isNull(root.get("sortNo")), 1).otherwise(0)),
+                            cb.asc(root.get("sortNo")),
+                            cb.asc(root.get("id")));
+                }
                 return cq.where(predicates.toArray(new Predicate[predicates.size()])).getRestriction();
             }
         };
diff --git a/src/main/java/com/yunhai/userbase/service/impl/SchoolAppOverrideService.java b/src/main/java/com/yunhai/userbase/service/impl/SchoolAppOverrideService.java
index e0df1d9..7bc70bf 100644
--- a/src/main/java/com/yunhai/userbase/service/impl/SchoolAppOverrideService.java
+++ b/src/main/java/com/yunhai/userbase/service/impl/SchoolAppOverrideService.java
@@ -194,6 +194,15 @@ public class SchoolAppOverrideService {
         return vo;
     }
 
+    /**
+     * 「全部」视图（未选应用类型）排序：按 id 正序 —— 创建顺序，最新创建的在最后。
+     * 与 SUPER 分支同口径（AppSettingsController：「全部」= Sort.by(ASC,"id")）：
+     * sort_no 是「类型内」序号，跨类型打平无全局意义，故「全部」不参与生效排序。
+     */
+    private Comparator<ApplicationInfoVo> appIdOrder() {
+        return Comparator.comparing(ApplicationInfoVo::getId, Comparator.nullsLast(Integer::compareTo));
+    }
+
     /** 生效排序：override sortNo 优先，空沿用主表（空视为999），并列按 id 升序 */
     private Comparator<ApplicationInfoVo> effectiveAppOrder(Map<Integer, SysSchoolAppOverride> overrides) {
         return (a, b) -> {
@@ -243,9 +252,12 @@ public class SchoolAppOverrideService {
             filtered.add(app);
         }
         Map<Integer, SysSchoolAppOverride> overrides = appOverridesFor(schools);
+        // 「全部」视图（未选应用类型）按 id 正序——与 SUPER 分支同口径（AppSettingsController：
+        // 全部 = Sort.by(ASC,"id")）。sort_no 是「类型内」序号，跨类型打平无全局意义，
+        // 故「全部」不参与生效排序；选中类型仍走 override/主表生效排序（拖拽结果可见）。
         List<ApplicationInfoVo> vos = filtered.stream()
                 .map(app -> mergeAppVo(app, overrides))
-                .sorted(effectiveAppOrder(overrides))
+                .sorted(categoryId == null ? appIdOrder() : effectiveAppOrder(overrides))
                 .collect(Collectors.toList());
         return pageInMemory(vos, pageable);
     }
diff --git a/src/test/java/com/yunhai/userbase/service/impl/AppCategoryServiceBaseAppFilterTest.java b/src/test/java/com/yunhai/userbase/service/impl/AppCategoryServiceBaseAppFilterTest.java
new file mode 100644
index 0000000..933cb1f
--- /dev/null
+++ b/src/test/java/com/yunhai/userbase/service/impl/AppCategoryServiceBaseAppFilterTest.java
@@ -0,0 +1,141 @@
+package com.yunhai.userbase.service.impl;
+
+import com.yunhai.platform.utils.model.BoaApp;
+import com.yunhai.platform.utils.model.BoaAppType;
+import com.yunhai.userbase.entity.AppCategory;
+import com.yunhai.userbase.entity.ApplicationInfo;
+import com.yunhai.userbase.repository.AppCategoryRepository;
+import com.yunhai.userbase.repository.ApplicationInfoRepository;
+import com.yunhai.userbase.repository.SysUserGroupRelRepository;
+import com.yunhai.userbase.service.IGroupAuthzService;
+import com.yunhai.userbase.service.ISysGroupService;
+import com.yunhai.userbase.service.resolve.MainGroupResolver;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyList;
+import static org.mockito.ArgumentMatchers.anyMap;
+import static org.mockito.Mockito.when;
+
+/**
+ * AppCategoryService.listBoaAppType 基石应用过滤单元测试（2026-10-08 修复）。<br>
+ * 契约：用户端应用列表（门户 /apps）不出现基石应用 ——
+ * <ul>
+ *   <li>UserBase 自身（appKey &le; 100000）被排除（超管分支 findUserAuthorizedAppIds 返回全量时的兜底）；</li>
+ *   <li>app_nature=BASE（UserHome / 移动门户）被排除；</li>
+ *   <li>BUSINESS 应用保留；</li>
+ *   <li>无基石行时输出与改动前逐项等价（不误伤）。</li>
+ * </ul>
+ */
+class AppCategoryServiceBaseAppFilterTest {
+
+    @InjectMocks
+    private AppCategoryService appCategoryService;
+
+    @Mock
+    private AppCategoryRepository appCategoryRepository;
+
+    @Mock
+    private ApplicationInfoRepository applicationInfoRepository;
+
+    @Mock
+    private IGroupAuthzService groupAuthzService;
+
+    @Mock
+    private SchoolAppOverrideService schoolAppOverrideService;
+
+    @Mock
+    private IdentityService identityService;
+
+    @Mock
+    private MainGroupResolver mainGroupResolver;
+
+    @Mock
+    private ISysGroupService sysGroupService;
+
+    @Mock
+    private SysUserGroupRelRepository sysUserGroupRelRepository;
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        AppCategory category = new AppCategory();
+        category.setId(10);
+        category.setName("办公管理");
+        category.setSortNo(1);
+        when(appCategoryRepository.findAllByOrderBySortNoAsc()).thenReturn(Collections.singletonList(category));
+        // 无学校语境（平台账号）：identity 无、主归属无 → applyAlias 不合并，直接看构建结果
+        when(identityService.getCurrent(1)).thenReturn(null);
+        when(mainGroupResolver.resolve(1)).thenReturn(Optional.empty());
+        // 合并口透传第一参数（本测试只断言过滤后的构建结果）
+        when(schoolAppOverrideService.applyAlias(anyList(), anyMap(), any()))
+                .thenAnswer(inv -> inv.getArgument(0));
+    }
+
+    /** 基石三类：UserBase 自身（appKey=100000）/ app_nature=BASE 均排除，BUSINESS 保留 */
+    @Test
+    void baseApps_excluded_businessKept() {
+        List<ApplicationInfo> apps = Arrays.asList(
+                app(1, 100000, null, "用户中心"),
+                app(2, 100001, "BASE", "用户之家"),
+                app(3, 100002, "BUSINESS", "通知公告"));
+        when(applicationInfoRepository.findAll()).thenReturn(apps);
+        // 超管分支：授权集合为全量（基石也在内）——正是 bug1 的触发条件
+        when(groupAuthzService.findUserAuthorizedAppIds(1)).thenReturn(Arrays.asList(1, 2, 3));
+
+        List<BoaAppType> result = appCategoryService.listBoaAppType(1, null, null);
+
+        assertEquals(1, result.size());
+        List<BoaApp> kept = result.get(0).getApps();
+        assertEquals(1, kept.size());
+        assertEquals(Integer.valueOf(3), kept.get(0).getId());
+        assertEquals("通知公告", kept.get(0).getName());
+    }
+
+    /** 无基石行时过滤逻辑零影响：全部 BUSINESS 应用按原顺序保留 */
+    @Test
+    void noBaseApps_allKeptUnchanged() {
+        when(applicationInfoRepository.findAll()).thenReturn(Arrays.asList(
+                app(3, 100002, "BUSINESS", "通知公告"),
+                app(4, null, null, "老应用")));
+        when(groupAuthzService.findUserAuthorizedAppIds(1)).thenReturn(Arrays.asList(3, 4));
+
+        List<BoaApp> kept = appCategoryService.listBoaAppType(1, null, null).get(0).getApps();
+
+        assertEquals(2, kept.size());
+        assertEquals(Integer.valueOf(3), kept.get(0).getId());
+        assertEquals(Integer.valueOf(4), kept.get(1).getId());
+    }
+
+    /** 无权限 / 无客户端命中的应用原本就被挡（回归：基石过滤不改变这两条既有口径） */
+    @Test
+    void unauthorizedBaseApp_stillNoneKept() {
+        when(applicationInfoRepository.findAll())
+                .thenReturn(new ArrayList<>(Collections.singletonList(app(2, 100001, "BASE", "用户之家"))));
+        when(groupAuthzService.findUserAuthorizedAppIds(1)).thenReturn(Collections.singletonList(2));
+
+        assertEquals(0, appCategoryService.listBoaAppType(1, null, null).get(0).getApps().size());
+    }
+
+    private static ApplicationInfo app(Integer id, Integer appKey, String appNature, String name) {
+        ApplicationInfo app = new ApplicationInfo();
+        app.setId(id);
+        app.setAppKey(appKey);
+        app.setAppNature(appNature);
+        app.setName(name);
+        app.setCategoryId(10);
+        app.setSortNo(id);
+        return app;
+    }
+}
diff --git a/src/test/java/com/yunhai/userbase/service/impl/SchoolAppOverrideServiceListSchoolAppsTest.java b/src/test/java/com/yunhai/userbase/service/impl/SchoolAppOverrideServiceListSchoolAppsTest.java
new file mode 100644
index 0000000..e6ea0b0
--- /dev/null
+++ b/src/test/java/com/yunhai/userbase/service/impl/SchoolAppOverrideServiceListSchoolAppsTest.java
@@ -0,0 +1,167 @@
+package com.yunhai.userbase.service.impl;
+
+import com.yunhai.userbase.entity.ApplicationInfo;
+import com.yunhai.userbase.entity.SysGroupAppRel;
+import com.yunhai.userbase.entity.SysSchoolAppOverride;
+import com.yunhai.userbase.model.application.ApplicationInfoQuery;
+import com.yunhai.userbase.model.application.ApplicationInfoVo;
+import com.yunhai.userbase.repository.AppCategoryRepository;
+import com.yunhai.userbase.repository.ApplicationInfoRepository;
+import com.yunhai.userbase.repository.SysGroupAppRelRepository;
+import com.yunhai.userbase.repository.SysGroupRepository;
+import com.yunhai.userbase.repository.SysSchoolAppOverrideRepository;
+import com.yunhai.userbase.repository.SysSchoolCategoryOverrideRepository;
+import com.yunhai.userbase.service.resolve.AccessScope;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Pageable;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.anyIterable;
+import static org.mockito.ArgumentMatchers.anyList;
+import static org.mockito.Mockito.when;
+
+/**
+ * SchoolAppOverrideService.listSchoolApps 视图分叉排序单元测试（2026-10-08 修复）。<br>
+ * 契约（学校管理员应用列表）：
+ * <ul>
+ *   <li>「全部」视图（categoryId=null）→ 按 id 正序（与 SUPER 分支 Sort.by(ASC,"id") 同口径），
+ *       最新创建的在最后，主表/覆盖 sort_no 均不影响；</li>
+ *   <li>选中应用类型 → 仍按生效排序（override sortNo 优先，空回落主表，并列 id 升序），拖拽结果不回归。</li>
+ * </ul>
+ */
+class SchoolAppOverrideServiceListSchoolAppsTest {
+
+    private static final Integer SCHOOL_ID = 7;
+    private static final Integer CAT_A = 10;
+
+    @InjectMocks
+    private SchoolAppOverrideService service;
+
+    @Mock
+    private SysSchoolAppOverrideRepository appOverrideRepository;
+
+    @Mock
+    private SysSchoolCategoryOverrideRepository categoryOverrideRepository;
+
+    @Mock
+    private SysGroupAppRelRepository sysGroupAppRelRepository;
+
+    @Mock
+    private ApplicationInfoRepository applicationInfoRepository;
+
+    @Mock
+    private AppCategoryRepository appCategoryRepository;
+
+    @Mock
+    private SysGroupRepository sysGroupRepository;
+
+    private final AccessScope scope = AccessScope.school(Collections.singletonList(SCHOOL_ID));
+
+    private final Pageable pageable = PageRequest.of(0, 20);
+
+    @BeforeEach
+    void setUp() {
+        MockitoAnnotations.openMocks(this);
+        when(appOverrideRepository.findBySchoolIdIn(anyList())).thenReturn(Collections.emptyList());
+        when(sysGroupAppRelRepository.findByGroupIdIn(anyList()))
+                .thenReturn(Arrays.asList(rel(1), rel(2), rel(3)));
+        // 主表 sortNo 与 id 反序（id 升序 = 3 的 sortNo 最小），两种视图结果必然不同，便于断言分叉生效
+        // 注意 findAllById 的入参是 openedAppIds 产出的 Set，须用 anyIterable 匹配（anyList 不匹配 Set）
+        when(applicationInfoRepository.findAllById(anyIterable())).thenReturn(Arrays.asList(
+                app(1, CAT_A, "应用一", 3),
+                app(2, CAT_A, "应用二", 2),
+                app(3, CAT_A, "应用三", 1)));
+    }
+
+    /** 「全部」视图：按 id 正序，主表 sortNo 不参与 */
+    @Test
+    void allView_orderedByIdAsc() {
+        List<Integer> ids = idsOf(service.listSchoolApps(new ApplicationInfoQuery(), pageable, scope, null));
+        assertEquals(Arrays.asList(1, 2, 3), ids);
+    }
+
+    /** 「全部」视图：有覆盖 sort_no 也不参与（sticky 排序不影响全部视图） */
+    @Test
+    void allView_ignoresOverrideSortNo() {
+        when(appOverrideRepository.findBySchoolIdIn(anyList()))
+                .thenReturn(new ArrayList<>(Collections.singletonList(override(2, 0))));
+
+        List<Integer> ids = idsOf(service.listSchoolApps(new ApplicationInfoQuery(), pageable, scope, null));
+        assertEquals(Arrays.asList(1, 2, 3), ids);
+    }
+
+    /** 选中应用类型：仍按主表生效排序（sortNo 升序） */
+    @Test
+    void categoryView_orderedByEffectiveSortNo() {
+        List<Integer> ids = idsOf(service.listSchoolApps(queryOfCategory(CAT_A), pageable, scope, null));
+        assertEquals(Arrays.asList(3, 2, 1), ids);
+    }
+
+    /** 选中应用类型：override sort_no 优先于主表（排序管理结果不回归） */
+    @Test
+    void categoryView_overrideSortNoWins() {
+        when(appOverrideRepository.findBySchoolIdIn(anyList()))
+                .thenReturn(new ArrayList<>(Collections.singletonList(override(2, 0))));
+
+        List<Integer> ids = idsOf(service.listSchoolApps(queryOfCategory(CAT_A), pageable, scope, null));
+        assertEquals(Arrays.asList(2, 3, 1), ids);
+    }
+
+    /** 关键词过滤仍生效，且「全部」视图内按 id 正序 */
+    @Test
+    void allView_keywordFilterKept() {
+        ApplicationInfoQuery query = new ApplicationInfoQuery();
+        query.setName("应用三");
+
+        List<Integer> ids = idsOf(service.listSchoolApps(query, pageable, scope, null));
+        assertEquals(Collections.singletonList(3), ids);
+    }
+
+    // ===================== 辅助 =====================
+
+    private static List<Integer> idsOf(Page<ApplicationInfoVo> page) {
+        return page.getContent().stream().map(ApplicationInfoVo::getId).collect(Collectors.toList());
+    }
+
+    private static ApplicationInfoQuery queryOfCategory(Integer categoryId) {
+        ApplicationInfoQuery query = new ApplicationInfoQuery();
+        query.setCategoryId(categoryId);
+        return query;
+    }
+
+    private static SysGroupAppRel rel(Integer appId) {
+        SysGroupAppRel rel = new SysGroupAppRel();
+        rel.setGroupId(SCHOOL_ID);
+        rel.setAppId(appId);
+        return rel;
+    }
+
+    private static SysSchoolAppOverride override(Integer appId, Integer sortNo) {
+        SysSchoolAppOverride o = new SysSchoolAppOverride();
+        o.setSchoolId(SCHOOL_ID);
+        o.setAppId(appId);
+        o.setSortNo(sortNo);
+        return o;
+    }
+
+    private static ApplicationInfo app(Integer id, Integer categoryId, String name, Integer sortNo) {
+        ApplicationInfo app = new ApplicationInfo();
+        app.setId(id);
+        app.setCategoryId(categoryId);
+        app.setName(name);
+        app.setSortNo(sortNo);
+        return app;
+    }
+}