feat: 品牌统一 LokiStack + 全站中英 i18n + 用户批量删除 + 主题定时切换与浅色侧栏

- 品牌: Go 模块/数据文件/二进制/构建部署资产全部 opsx→lokistack;前端 localStorage 命名空间迁移(读旧写新,含按用户 id 前缀迁移);修复 nginx upstream 与 Makefile 引用已改名服务的断裂
- i18n: react-i18next 落地,common + 11 个页面域命名空间全站中英(菜单/顶栏/登录/列表页/表单/确认弹窗/状态徽章);设置页语言即时切换;修复词典自注册导致的循环导入白屏
- 用户管理: 批量删除(POST /users/batch-delete,不删自己/最后管理员,部分失败不阻断)+ 行复选/全选/批量工具条
- 主题: 浅色侧栏(中性灰激活态)、四态模式(浅色/深色/跟随系统/定时切换,按时区判定)、顶栏太阳月亮二态、设置页紧凑分段选择器
- UI: 登录记住用户名、CardActionButton 统一五页卡片操作钮、shadcn Badge 替换手写徽章、语义色修正
- 清理: 移除主机 Web 终端(前后端)、k8s-helm/Helm 遗留代码与字段、README 重写精简
- 修复: 侧栏与日志告警 order 重复、路由标题 i18n key 未翻译、词典双逗号等

Makefile

@@ -1,5 +1,5 @@
 # ============================================================
-# opsx-loki - Makefile
+# lokistack - Makefile
 # Convenient shortcuts for common operations
 # ============================================================
 
@@ -7,7 +7,7 @@
 
 # Default target
 help:
-	@echo "opsx-loki v2 - Available Commands:"
+	@echo "lokistack - Available Commands:"
 	@echo ""
 	@echo "  make build       - Build Docker image"
 	@echo "  make start       - Start with docker-compose (dev)"
@@ -24,12 +24,12 @@ help:
 
 # Build Docker image
 build:
-	@echo "Building opsx-loki v2 image..."
+	@echo "Building lokistack image..."
 	@docker compose build --no-cache
 
 # Development
 start:
-	@echo "Starting opsx-loki (dev mode)..."
+	@echo "Starting lokistack (dev mode)..."
 	@echo ""
 	@if [ -z "$${JWT_SECRET:-}" ]; then \
 		echo "WARNING: JWT_SECRET not set!"; \
@@ -41,12 +41,12 @@ start:
 	fi
 	@docker compose up -d
 	@echo ""
-	@echo "opsx-loki started!"
+	@echo "lokistack started!"
 	@echo "  URL: http://localhost:$${SERVER_PORT:-8080}"
 	@echo "  Check status: make status"
 
 stop:
-	@echo "Stopping opsx-loki..."
+	@echo "Stopping lokistack..."
 	@docker compose down --timeout 15
 
 status:
@@ -54,10 +54,10 @@ status:
 	@docker compose ps
 	@echo ""
 	@echo "=== Health Checks ==="
-	@docker inspect --format='{{.Name}}: {{.State.Health.Status}}' opsxloki 2>/dev/null || echo "opsxloki: container not found"
+	@docker inspect --format='{{.Name}}: {{.State.Health.Status}}' lokistack 2>/dev/null || echo "lokistack: container not found"
 	@echo ""
 	@echo "=== Resource Usage ==="
-	@docker stats --no-stream --format "table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}\t{{.NetIO}}\t{{.BlockIO}}" opsxloki 2>/dev/null || true
+	@docker stats --no-stream --format "table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}\t{{.NetIO}}\t{{.BlockIO}}" lokistack 2>/dev/null || true
 
 logs:
 	@docker compose logs -f --tail=50
@@ -69,7 +69,7 @@ prod-setup: secrets
 	@echo "Production secrets created in ./secrets/"
 
 prod:
-	@echo "Starting opsx-loki (production mode)..."
+	@echo "Starting lokistack (production mode)..."
 	@if [ ! -f secrets/jwt_secret.txt ] || [ ! -f secrets/encryption_key.txt ]; then \
 		echo "ERROR: Secrets not found. Run 'make secrets' first."; \
 		exit 1; \
@@ -99,7 +99,7 @@ secrets:
 
 # Maintenance
 shell:
-	@docker compose exec opsxloki /bin/sh
+	@docker compose exec lokistack /bin/sh
 
 clean:
 	@echo "Cleaning up..."