v0.5.4: 全面修复 — template literal URL, Cookie验证, 用户默认is_active, 默认账号路由, 空间信息, 密钥清理, promoForm修复

修复:
- quark-share.ts/storage.ts: 9处template literal ${}缺失导致fetch URL写死
- user/routes.ts: testCloudConnectionWithCookie缺await + 按cloudType分发驱动
- credential.service.ts: INSERT缺?参数 (9values/10cols)
- user/routes.ts: 用户新增网盘默认is_active=0
- admin.routes.ts: 新增PUT /admin/cloud-configs/:id/primary路由
- database.ts: is_primary列迁移
- UserDashboard.vue: 保存时传递storage_used/storage_total
- SystemConfig.vue: promoForm const重赋值bug
- config/index.ts: 移除泄露的默认密钥token

source_clean/frontend/assets/Cleanup-CqLXcLMT.css

@@ -0,0 +1 @@
+.cleanup-section[data-v-8b089041] .el-card__header{font-size:16px;font-weight:600;letter-spacing:.5px;border-bottom:1px solid var(--border)}.cleanup-grid[data-v-8b089041]{display:grid;grid-template-columns:1fr 1fr;gap:16px}.cleanup-group[data-v-8b089041]{border:1px solid var(--border);border-radius:var(--radius-md);padding:16px 18px;background:var(--bg-card);transition:box-shadow .2s}.cleanup-group[data-v-8b089041]:hover{box-shadow:var(--shadow-sm)}.cleanup-group-label[data-v-8b089041]{font-size:14px;font-weight:600;color:var(--primary);margin-bottom:12px;padding-bottom:8px;border-bottom:1px dashed var(--border-light)}.cleanup-hint[data-v-8b089041]{color:var(--text-tertiary);font-size:12px;line-height:1.5}.cleanup-actions[data-v-8b089041]{margin-top:20px;padding:16px 18px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}.cleanup-actions-buttons[data-v-8b089041]{display:flex;gap:10px;flex-wrap:wrap}.cleanup-info[data-v-8b089041]{font-size:13px;color:var(--text-tertiary);display:flex;flex-wrap:wrap;gap:4px}@media (max-width: 900px){.cleanup-grid[data-v-8b089041]{grid-template-columns:1fr}}