refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps

- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.

internal/model/analytics/node_access_log.go

@@ -0,0 +1,42 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package analytics
+
+import (
+	"fmt"
+	"time"
+)
+
+const (
+	nodeAccessLogTableName     = "of_node_access_logs"
+	nodeAccessLogInsertColumns = "id, node_id, logged_at, remote_addr, region, host, path, status_code, created_at"
+)
+
+// NodeAccessLog stores OpenFlare edge node access records in ClickHouse.
+type NodeAccessLog struct {
+	ID         uint64    `gorm:"column:id"`
+	NodeID     string    `gorm:"column:node_id"`
+	LoggedAt   time.Time `gorm:"column:logged_at"`
+	RemoteAddr string    `gorm:"column:remote_addr"`
+	Region     string    `gorm:"column:region"`
+	Host       string    `gorm:"column:host"`
+	Path       string    `gorm:"column:path"`
+	StatusCode int32     `gorm:"column:status_code"`
+	CreatedAt  time.Time `gorm:"column:created_at"`
+}
+
+// TableName returns the ClickHouse table name.
+func (NodeAccessLog) TableName() string {
+	return nodeAccessLogTableName
+}
+
+// InsertColumns returns comma-separated column names for batch insert.
+func (NodeAccessLog) InsertColumns() string {
+	return nodeAccessLogInsertColumns
+}
+
+// BatchInsertSQL returns the INSERT prefix used by native batch writers.
+func (NodeAccessLog) BatchInsertSQL() string {
+	return fmt.Sprintf("INSERT INTO %s (%s)", nodeAccessLogTableName, nodeAccessLogInsertColumns)
+}