feat(小组件管理改版): 卡片网格管理台 + 校级覆盖层 + 退役系统设置/应用管理

后端
- widget_catalog 加 3 列：scope_type（三态可见范围）/ role_types（可见角色）/ role_alias（角色专属命名 JSON）
- 新增两表：widget_catalog_school（点名表，uk_widget_school）、widget_school_setting（校级覆盖层，uk_widget_sch）
- WidgetController 新增 GetWidgetCatalogList / SaveWidgetCatalog / DeleteWidgetCatalog /
  GetWidgetSchoolSetting / SaveWidgetSchoolSetting；权限拆 checkSuperAdmin（仅超管）与
  checkSchAdmin（超管或 roleId∈{2,5,7}）
- SaveWidgetSchoolSetting 强制 schId 取当前登录校，前端传参不采信（防越权）
- 显示名三级链：校级别名 > 角色专属命名 > 组件名；role_alias 坏 JSON 降级不抛
- 启动期幂等 seeding（空库才写 3 条内置目录行）
- 手工 DDL 脚本 resources/sql/widget_catalog_v2.sql（含回滚）

前端
- WidgetManage 重写为卡片网格：超管/校管双视角、类型页签 + 搜索、拖拽排序、启停、
  删除、登记内置组件、空态引导
- 新增 WidgetCard / WidgetEditModal / WidgetRegisterModal
- UserSettingApi 加 6 个方法；types 加 WidgetCatalog 接口
- 管理端列表整行回传（SaveWidgetCatalog 为整行 merge）

退役
- 删除 SysSetting.vue / SysTempManage.vue / AppSettingApi.ts 与后端 AppSettingController /
  AppCategory(SQL) 全链路，清理路由、Settings 导航与样式分支
- 保留 SysSettingApi.ts（壁纸/logo 池管理仍在使用）

src/views/widget/WidgetRegisterModal.vue

@@ -0,0 +1,342 @@
+<template>
+    <Teleport to="body">
+        <div v-if="visible" class="wm-reg-root">
+            <div class="modal-mask show" @click="close"></div>
+            <div class="modal show sm">
+                <div class="m-head">
+                    <div>
+                        <h4>登记内置组件 <span class="badge builtin">超管专属</span></h4>
+                        <div class="m-sub">键须与 front/src/components/widgets/index.ts 一致</div>
+                    </div>
+                    <button class="x" @click="close">×</button>
+                </div>
+                <div class="m-body">
+                    <p>
+                        <b>原理：</b>内置组件的<b>代码</b>打在前端工程里，并在注册表 <code>index.ts</code> 注册成一个<b>键</b>；
+                        <code>widget_catalog</code> 只存「目录行」（键 + 展示名 + 排序 + 启用 + 范围 + 角色 + 别名覆盖），<b>不存内容</b>。
+                        用户端拿到候选池后按 <code>code</code> 去注册表查，命中就渲染对应 Vue 组件。<br />
+                        所以「登记」= 往目录表插一条 <code>comp_type=1, code=注册表里的键</code> 的记录，<b>不会让代码里凭空多出一个组件</b>。
+                    </p>
+                    <ol>
+                        <li>前端新建 <code>components/widgets/XxxWidget.vue</code></li>
+                        <li>在 <code>components/widgets/index.ts</code> 注册 <code>{ code, name }</code>（键一旦发布就别改，改键 = 换身份）</li>
+                        <li>需要动态数据时，后端 <code>WidgetDataService</code> 加白名单分支</li>
+                        <li><b>发版部署</b>（内置组件必须发版才生效）</li>
+                        <li>回到本弹窗点「登记」，或跑 <code>resources/sql/widget_catalog.sql</code> 种子</li>
+                    </ol>
+                    <ul class="reg-list">
+                        <li v-for="row in rows" :key="row.code">
+                            <input v-model="row.name" class="inp name-inp" maxlength="30" placeholder="展示名" />
+                            <span class="rc">{{ row.code }}</span>
+                            <span class="grow"></span>
+                            <span v-if="row.registered" class="badge ok">已登记</span>
+                            <button v-else class="btn sm primary" :disabled="saving" @click="registerOne(row)">登记</button>
+                        </li>
+                        <li v-if="rows.length === 0" class="empty">前端注册表里没有可登记的键</li>
+                    </ul>
+                </div>
+                <div class="m-foot">
+                    <span class="save-tip">{{ tip }}</span>
+                    <button class="btn plain" @click="close">关闭</button>
+                    <button v-if="pendingCount > 1" class="btn primary" :disabled="saving" @click="registerAll">
+                        一键登记 {{ pendingCount }} 个未登记键
+                    </button>
+                </div>
+            </div>
+        </div>
+    </Teleport>
+</template>
+
+<script lang="ts" setup>
+import { computed, reactive, ref, watch } from "vue";
+import { Message } from "view-ui-plus";
+import UserSettingApi from "@/api/UserSettingApi";
+
+const props = defineProps<{
+    visible: boolean;
+    /** 前端注册表的键（来自 components/widgets/index.ts） */
+    registryCodes: string[];
+    /** 已登记进候选池的内置键 */
+    registeredCodes: string[];
+    /** 登记时的起始排序基数 */
+    nextSort: number;
+}>();
+
+const emit = defineEmits<{ (e: "close"): void; (e: "saved"): void }>();
+
+const saving = ref(false);
+const tip = ref("");
+const rows = reactive<{ code: string; name: string; registered: boolean }[]>([]);
+
+const pendingCount = computed(() => rows.filter(x => !x.registered).length);
+
+watch(
+    () => props.visible,
+    show => {
+        if (!show) return;
+        rows.splice(0, rows.length);
+        props.registryCodes.forEach(code => {
+            rows.push({ code, name: code, registered: props.registeredCodes.includes(code) });
+        });
+        tip.value = "";
+    },
+    { immediate: true }
+);
+
+function close() {
+    emit("close");
+}
+
+async function registerOne(row: { code: string; name: string }) {
+    await registerBatch([{ code: row.code, name: row.name }]);
+}
+
+async function registerAll() {
+    const payload = rows.filter(x => !x.registered).map(x => ({ code: x.code, name: x.name }));
+    await registerBatch(payload);
+}
+
+async function registerBatch(payload: { code: string; name: string }[]) {
+    if (payload.length === 0) return;
+    saving.value = true;
+    let done = 0;
+    let baseSort = props.nextSort;
+    for (const one of payload) {
+        try {
+            await UserSettingApi.saveWidgetCatalog({
+                id: null,
+                code: one.code,
+                name: (one.name || one.code).trim(),
+                compType: 1,
+                content: null,
+                dataCode: one.code,
+                scopeType: 0,
+                scopeSchIds: [],
+                roleTypes: null,
+                roleAlias: null,
+                sort: baseSort,
+                enabled: 1,
+            });
+            done++;
+            baseSort += 10;
+        } catch (e) {
+            console.warn("[widget] 登记失败", one.code, e);
+            Message.error(typeof e === "string" ? e : `登记失败：${one.code}`);
+        }
+    }
+    saving.value = false;
+    if (done > 0) {
+        Message.success(`已登记 ${done} 个内置组件`);
+        tip.value = "登记后进入候选池，可回主界面继续配范围 / 角色";
+        emit("saved");
+    }
+}
+</script>
+
+<style lang="scss" scoped>
+@use "sass:color";
+@use "../../assets/styles/utils/varible" as *;
+
+$wm-brand: $color-primary;
+$wm-brand-weak: color.mix(#ffffff, $wm-brand, 90%);
+
+.wm-reg-root {
+    --wm-t1: #2c3138;
+    --wm-t2: #4a4f55;
+    --wm-t3: #7a8088;
+    --wm-t4: #9aa0a8;
+    --wm-line: #eef0f3;
+    --wm-ok-bg: #e8f7ee;
+    --wm-ok: #12a150;
+}
+.modal-mask {
+    position: fixed;
+    inset: 0;
+    background: rgba(16, 24, 40, 0.3);
+    z-index: 110;
+}
+.modal {
+    position: fixed;
+    left: 50%;
+    top: 50%;
+    transform: translate(-50%, -50%);
+    width: 780px;
+    max-width: 94vw;
+    max-height: 88vh;
+    background: #fff;
+    border-radius: 12px;
+    z-index: 111;
+    box-shadow: 0 20px 60px rgba(16, 24, 40, 0.24);
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+    &.sm {
+        width: 560px;
+    }
+}
+.m-head {
+    display: flex;
+    align-items: flex-start;
+    justify-content: space-between;
+    gap: 12px;
+    padding: 18px 22px 12px;
+    border-bottom: 1px solid var(--wm-line);
+    h4 {
+        font-size: 15px;
+        font-weight: 600;
+        color: var(--wm-t1);
+        display: flex;
+        align-items: center;
+        gap: 8px;
+    }
+    .m-sub {
+        font-size: 12px;
+        color: var(--wm-t4);
+        margin-top: 4px;
+        font-family: Consolas, Menlo, monospace;
+    }
+    .x {
+        border: none;
+        background: transparent;
+        font-size: 20px;
+        line-height: 1;
+        color: var(--wm-t4);
+        cursor: pointer;
+        padding: 2px 6px;
+        border-radius: 6px;
+        &:hover {
+            background: #f2f4f8;
+            color: var(--wm-t2);
+        }
+    }
+}
+.m-body {
+    flex: 1;
+    min-height: 0;
+    overflow-y: auto;
+    padding: 14px 22px 18px;
+    > p {
+        font-size: 12.5px;
+        color: var(--wm-t3);
+        line-height: 1.75;
+        margin-bottom: 12px;
+    }
+    ol {
+        font-size: 12.5px;
+        color: var(--wm-t3);
+        line-height: 1.9;
+        padding-left: 20px;
+        margin-bottom: 12px;
+        b {
+            color: var(--wm-t2);
+        }
+    }
+}
+.m-foot {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    padding: 12px 22px 16px;
+    border-top: 1px solid var(--wm-line);
+    .save-tip {
+        flex: 1;
+        font-size: 12px;
+        color: var(--wm-ok);
+    }
+}
+.badge {
+    display: inline-flex;
+    align-items: center;
+    height: 20px;
+    padding: 0 8px;
+    border-radius: 6px;
+    font-size: 11.5px;
+    font-weight: 500;
+    white-space: nowrap;
+    &.builtin {
+        background: $wm-brand-weak;
+        color: $wm-brand;
+    }
+    &.ok {
+        background: var(--wm-ok-bg);
+        color: var(--wm-ok);
+    }
+}
+.reg-list {
+    list-style: none;
+    border: 1px solid var(--wm-line);
+    border-radius: 8px;
+    overflow: hidden;
+    li {
+        display: flex;
+        align-items: center;
+        gap: 10px;
+        padding: 11px 14px;
+        border-bottom: 1px solid var(--wm-line);
+        font-size: 13px;
+        &:last-child {
+            border-bottom: none;
+        }
+        &.empty {
+            color: var(--wm-t4);
+            font-size: 12.5px;
+        }
+        .grow {
+            flex: 1;
+        }
+        .rc {
+            font-size: 11.5px;
+            color: var(--wm-t4);
+            font-family: Consolas, Menlo, monospace;
+        }
+    }
+}
+.inp {
+    height: 30px;
+    border: 1px solid #dcdfe6;
+    border-radius: 6px;
+    padding: 0 10px;
+    font-size: 12.5px;
+    outline: none;
+    background: #fff;
+    &:focus {
+        border-color: $wm-brand;
+        box-shadow: 0 0 0 3px rgba($wm-brand, 0.12);
+    }
+    &.name-inp {
+        width: 150px;
+        flex-shrink: 0;
+    }
+}
+.btn {
+    border: 1px solid #d0d5dd;
+    background: #fff;
+    color: #344054;
+    height: 30px;
+    padding: 0 12px;
+    border-radius: 6px;
+    font-size: 12.5px;
+    cursor: pointer;
+    display: inline-flex;
+    align-items: center;
+    gap: 5px;
+    white-space: nowrap;
+    &:hover {
+        border-color: var(--wm-t4);
+    }
+    &.primary {
+        background: $wm-brand;
+        border-color: $wm-brand;
+        color: #fff;
+    }
+    &.sm {
+        height: 26px;
+        padding: 0 10px;
+        font-size: 12px;
+    }
+    &[disabled] {
+        opacity: 0.5;
+        cursor: default;
+    }
+}
+</style>