Fix API compatibility and add user/role/permission and asset import/export

frontend/dist/assets/ChartsExample-D-xFjFkn.css

@@ -0,0 +1 @@
+@charset "UTF-8";.stat-card[data-v-85408420]{height:100%;transition:all .3s ease}.stat-card--clickable[data-v-85408420]{cursor:pointer}.stat-card--clickable[data-v-85408420]:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.stat-card--loading[data-v-85408420]{pointer-events:none}.stat-card__header[data-v-85408420]{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.stat-card__title[data-v-85408420]{font-size:14px;color:#64748b;font-weight:500}.stat-card__icon[data-v-85408420]{font-size:24px;opacity:.8}.stat-card__value[data-v-85408420]{display:flex;align-items:baseline;margin-bottom:12px;gap:4px}.stat-card__value-number[data-v-85408420]{font-size:28px;font-weight:600;line-height:1}.stat-card__value-unit[data-v-85408420]{font-size:14px;color:#64748b;margin-left:4px}.stat-card__trend[data-v-85408420]{display:flex;align-items:center;gap:8px}.stat-card__trend-label[data-v-85408420]{font-size:12px;color:#94a3b8}.stat-card-group[data-v-89795cfd]{width:100%}.stat-card-group[data-v-89795cfd] .el-col{margin-bottom:16px}.base-chart[data-v-3ce88dcc]{width:100%;min-height:200px}.asset-status-chart[data-v-57931136],.asset-distribution-chart[data-v-c66b9ac4],.asset-value-trend-chart[data-v-6c4f98e8],.asset-utilization-chart[data-v-db1e5c95]{width:100%;height:100%}.charts-example[data-v-6089c941]{padding:20px}.charts-example .mb-4[data-v-6089c941]{margin-bottom:16px}.charts-example .code-block[data-v-6089c941]{background:#f8fafc;border:1px solid #e2e8f0;border-radius:6px;padding:16px;overflow-x:auto;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:13px;line-height:1.6;color:#334155}