style: 设计规范新增 cursor-pointer 规则 + 代码同步

- docs: tlyq-design-system.md 新增「光标系统」章节
- dashboard: 服务卡片添加 cursor-pointer
- settings: checkbox label 添加 cursor-pointer
- roles: 权限 checkbox label 添加 cursor-pointer

src/app/admin/roles/page.tsx

@@ -107,7 +107,7 @@ export default function RolesPage() {
                   <span className="text-sm text-slate-400">admin 角色拥有全部 {allPermissions.length} 个权限</span>
                 ) : editing === role.role ? (
                   allPermissions.map(p => (
-                    <label key={p} className="flex items-center gap-2 text-sm py-1">
+                    <label key={p} className="flex items-center gap-2 text-sm py-1 cursor-pointer">
                       <input type="checkbox" checked={perms.includes(p)} onChange={() => togglePerm(p)}
                         className="rounded border-slate-300 text-indigo-600" />
                       {permLabels[p] || p}

src/app/dashboard/page.tsx

@@ -70,7 +70,7 @@ export default function DashboardPage() {
         {services.map((s) => {
           const isAbnormal = s.current_status === 'abnormal'
           return (
-            <div key={String(s.id)} className={`rounded-xl p-5 border transition-all ${isAbnormal ? 'bg-red-50 dark:bg-red-500/10 border-red-600 dark:border-red-400' : 'bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-800 hover:shadow-sm'}`}>
+            <div key={String(s.id)} className={`rounded-xl p-5 border transition-all cursor-pointer ${isAbnormal ? 'bg-red-50 dark:bg-red-500/10 border-red-600 dark:border-red-400' : 'bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-800 hover:shadow-sm'}`}>
               <div className="flex items-center justify-between mb-2">
                 <span className="flex items-center gap-2 text-sm font-semibold">
                   <span className={`w-2.5 h-2.5 rounded-full ${isAbnormal ? 'bg-red-600 shadow-[0_0_8px_var(--danger)]' : 'bg-emerald-600'}`} />

src/app/settings/page.tsx

@@ -173,7 +173,7 @@ export default function SettingsPage() {
                     { key: 'level_warning', label: 'Warning' },
                     { key: 'level_info', label: 'Info' },
                   ].map(l => (
-                    <label key={l.key} className="flex items-center gap-2 text-sm">
+                    <label key={l.key} className="flex items-center gap-2 text-sm cursor-pointer">
                       <input type="checkbox" checked={!!(editing as Record<string, unknown>)[l.key]} onChange={e => updateField(l.key, e.target.checked ? 1 : 0)}
                         className="rounded border-slate-300 text-indigo-600 focus:ring-indigo-500" />
                       {l.label}
@@ -182,7 +182,7 @@ export default function SettingsPage() {
                 </div>
               </div>
               <div>
-                <label className="flex items-center gap-2 text-sm text-slate-700 dark:text-slate-300">
+                <label className="flex items-center gap-2 text-sm text-slate-700 dark:text-slate-300 cursor-pointer">
                   <input type="checkbox" checked={!!editing.quiet_start} onChange={e => {
                     if (e.target.checked) {
                       updateField('quiet_start', '23:00')
@@ -210,7 +210,7 @@ export default function SettingsPage() {
                   </div>
                 </div>
               )}
-              <label className="flex items-center gap-2 text-sm text-slate-700 dark:text-slate-300">
+              <label className="flex items-center gap-2 text-sm text-slate-700 dark:text-slate-300 cursor-pointer">
                 <input type="checkbox" checked={editing.enabled === 1} onChange={e => updateField('enabled', e.target.checked ? 1 : 0)}
                   className="rounded border-slate-300 text-indigo-600 focus:ring-indigo-500" />
                 启用渠道