feat(spec58): 模块注册表后端与模块硬编码收敛（#60）

- 新增 gxmu/module 包：ModuleRegistry 实体/Mapper/Service，listEnabled 按 sort_number 升序，titleOf 未注册回退 module 原串
- 新增 GET /api/gxmu/module-registry/list（需登录），返回启用模块元数据
- ReviewFlowConfigServiceImpl / ReviewListServiceImpl 的模块名映射改读注册表，查不到回退原串
- DeclareGuardServiceImpl 的模块集合改为注册表驱动，含 enabled=0（停用模块存量仍可撤回/作废）
- 启动期一致性校验：table_name≠module 或业务表缺失即启动失败，gxmu.module-registry.strict=false 可关闭
- 单测 13 例：注册表加载与排序、titleOf 回退、启动校验、module 名回退

src/test/java/com/gxwebsoft/gxmu/module/ModuleRegistryServiceImplTest.java

@@ -0,0 +1,113 @@
+package com.gxwebsoft.gxmu.module;
+
+import com.gxwebsoft.gxmu.module.entity.ModuleRegistry;
+import com.gxwebsoft.gxmu.module.mapper.ModuleRegistryMapper;
+import com.gxwebsoft.gxmu.module.service.impl.ModuleRegistryServiceImpl;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.mockito.junit.jupiter.MockitoSettings;
+import org.mockito.quality.Strictness;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
+
+/**
+ * 模块注册表服务的单元测试（mock 掉 Mapper，不启 Spring、不连库）。
+ *
+ * <p>注册表是模块元数据的唯一来源，这里锁住三件对外可观察的事：
+ * 启用清单按 sort_number 升序、标题查询在未注册时回退 module 原串、
+ * 模块集合包含已停用模块（停用模块的历史数据仍要能撤回/作废）。
+ *
+ * @author Codex
+ * @since 2026-11-10
+ */
+@ExtendWith(MockitoExtension.class)
+@MockitoSettings(strictness = Strictness.LENIENT)
+class ModuleRegistryServiceImplTest {
+
+    @Mock
+    private ModuleRegistryMapper moduleRegistryMapper;
+
+    @InjectMocks
+    private ModuleRegistryServiceImpl moduleRegistryService;
+
+    @Test
+    void listEnabledReturnsOnlyEnabledModulesOrderedBySortNumber() {
+        when(moduleRegistryMapper.selectList(any())).thenReturn(Arrays.asList(
+                module("gxmu_qmgc_form", "青马工程", 1, 8),
+                module("gxmu_sjtbzbsj", "十佳团支部书记", 0, 2),
+                module("gxmu_sjqn", "十佳青年岗位能手", 1, 1)));
+
+        List<ModuleRegistry> enabled = moduleRegistryService.listEnabled();
+
+        assertEquals(Arrays.asList("gxmu_sjqn", "gxmu_qmgc_form"),
+                enabled.stream().map(ModuleRegistry::getModule).collect(Collectors.toList()));
+    }
+
+    @Test
+    void titleOfReturnsRegisteredTitle() {
+        when(moduleRegistryMapper.selectOne(any())).thenReturn(module("gxmu_tzbcy_form", "挑战杯", 1, 7));
+
+        assertEquals("挑战杯", moduleRegistryService.titleOf("gxmu_tzbcy_form"));
+    }
+
+    @Test
+    void titleOfFallsBackToModuleStringWhenNotRegistered() {
+        when(moduleRegistryMapper.selectOne(any())).thenReturn(null);
+
+        assertEquals("cms_legacy_module", moduleRegistryService.titleOf("cms_legacy_module"));
+    }
+
+    @Test
+    void titleOfKeepsNullModuleNull() {
+        assertNull(moduleRegistryService.titleOf(null));
+    }
+
+    @Test
+    void titleMapCoversDisabledModulesSoHistoricalRowsKeepTitles() {
+        when(moduleRegistryMapper.selectList(any())).thenReturn(Arrays.asList(
+                module("gxmu_sjqn", "十佳青年岗位能手", 1, 1),
+                module("gxmu_yxgqty", "优秀共青团员", 0, 6)));
+
+        Map<String, String> titles = moduleRegistryService.titleMap();
+
+        assertEquals("十佳青年岗位能手", titles.get("gxmu_sjqn"));
+        assertEquals("优秀共青团员", titles.get("gxmu_yxgqty"));
+        assertEquals(2, titles.size());
+    }
+
+    @Test
+    void moduleSetContainsDisabledModules() {
+        when(moduleRegistryMapper.selectList(any())).thenReturn(Arrays.asList(
+                module("gxmu_sjqn", "十佳青年岗位能手", 1, 1),
+                module("gxmu_yxgqty", "优秀共青团员", 0, 6)));
+
+        assertTrue(moduleRegistryService.containsModule("gxmu_yxgqty"));
+        assertFalse(moduleRegistryService.containsModule("gxmu_unknown"));
+        assertFalse(moduleRegistryService.containsModule(null));
+    }
+
+    private ModuleRegistry module(String name, String title, int enabled, int sortNumber) {
+        ModuleRegistry item = new ModuleRegistry();
+        item.setModule(name);
+        item.setTableName(name);
+        item.setTitle(title);
+        item.setDetailKey(name);
+        item.setEnabled(enabled);
+        item.setSortNumber(sortNumber);
+        item.setDeleted(0);
+        return item;
+    }
+}