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/openflare_apply_log.go

@@ -0,0 +1,132 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package model
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"github.com/Rain-kl/Wavelet/internal/db"
+	"gorm.io/gorm"
+)
+
+// OpenFlareApplyLogQuery filters apply logs for list queries.
+type OpenFlareApplyLogQuery struct {
+	NodeID   string
+	PageNo   int
+	PageSize int
+}
+
+// OpenFlareApplyLog stores node configuration apply results.
+type OpenFlareApplyLog struct {
+	ID                  uint      `json:"id" gorm:"primaryKey;autoIncrement"`
+	NodeID              string    `json:"node_id" gorm:"index;size:64;not null"`
+	Version             string    `json:"version" gorm:"size:32;not null"`
+	Result              string    `json:"result" gorm:"size:32;not null"`
+	Message             string    `json:"message" gorm:"type:text"`
+	Checksum            string    `json:"checksum" gorm:"size:64;not null;default:''"`
+	MainConfigChecksum  string    `json:"main_config_checksum" gorm:"size:64;not null;default:''"`
+	RouteConfigChecksum string    `json:"route_config_checksum" gorm:"size:64;not null;default:''"`
+	SupportFileCount    int       `json:"support_file_count" gorm:"not null;default:0"`
+	CreatedAt           time.Time `json:"created_at" gorm:"autoCreateTime;index"`
+}
+
+// TableName returns the GORM table name.
+func (OpenFlareApplyLog) TableName() string {
+	return "of_apply_logs"
+}
+
+// ListOpenFlareApplyLogs returns apply logs ordered by id desc with optional pagination.
+func ListOpenFlareApplyLogs(ctx context.Context, query OpenFlareApplyLogQuery) ([]*OpenFlareApplyLog, error) {
+	conn := db.DB(ctx)
+	if conn == nil {
+		return nil, errors.New(errDatabaseNotInitialized)
+	}
+
+	dbQuery := conn.Model(&OpenFlareApplyLog{}).Order("id desc")
+	if query.NodeID != "" {
+		dbQuery = dbQuery.Where("node_id = ?", query.NodeID)
+	}
+	if query.PageSize > 0 {
+		offset := 0
+		if query.PageNo > 1 {
+			offset = (query.PageNo - 1) * query.PageSize
+		}
+		dbQuery = dbQuery.Limit(query.PageSize).Offset(offset)
+	}
+
+	var logs []*OpenFlareApplyLog
+	if err := dbQuery.Find(&logs).Error; err != nil {
+		return nil, err
+	}
+	return logs, nil
+}
+
+// CountOpenFlareApplyLogs returns total apply logs, optionally filtered by node_id.
+func CountOpenFlareApplyLogs(ctx context.Context, nodeID string) (int64, error) {
+	conn := db.DB(ctx)
+	if conn == nil {
+		return 0, errors.New(errDatabaseNotInitialized)
+	}
+
+	query := conn.Model(&OpenFlareApplyLog{})
+	if nodeID != "" {
+		query = query.Where("node_id = ?", nodeID)
+	}
+
+	var total int64
+	if err := query.Count(&total).Error; err != nil {
+		return 0, err
+	}
+	return total, nil
+}
+
+// GetLatestOpenFlareApplyLogsByNodeIDs returns the latest apply log per node id.
+func GetLatestOpenFlareApplyLogsByNodeIDs(ctx context.Context, nodeIDs []string) (map[string]*OpenFlareApplyLog, error) {
+	result := make(map[string]*OpenFlareApplyLog)
+	if len(nodeIDs) == 0 {
+		return result, nil
+	}
+
+	conn := db.DB(ctx)
+	if conn == nil {
+		return nil, errors.New(errDatabaseNotInitialized)
+	}
+
+	var logs []*OpenFlareApplyLog
+	subQuery := conn.Model(&OpenFlareApplyLog{}).
+		Select("MAX(id) AS id").
+		Where("node_id IN ?", nodeIDs).
+		Group("node_id")
+	if err := conn.Where("id IN (?)", subQuery).Find(&logs).Error; err != nil {
+		return nil, err
+	}
+	for _, log := range logs {
+		result[log.NodeID] = log
+	}
+	return result, nil
+}
+
+// DeleteAllOpenFlareApplyLogs removes every apply log record.
+func DeleteAllOpenFlareApplyLogs(ctx context.Context) (int64, error) {
+	conn := db.DB(ctx)
+	if conn == nil {
+		return 0, errors.New(errDatabaseNotInitialized)
+	}
+
+	result := conn.Session(&gorm.Session{AllowGlobalUpdate: true}).Delete(&OpenFlareApplyLog{})
+	return result.RowsAffected, result.Error
+}
+
+// DeleteOpenFlareApplyLogsBefore removes apply logs created before the cutoff time.
+func DeleteOpenFlareApplyLogsBefore(ctx context.Context, before time.Time) (int64, error) {
+	conn := db.DB(ctx)
+	if conn == nil {
+		return 0, errors.New(errDatabaseNotInitialized)
+	}
+
+	result := conn.Where("created_at < ?", before).Delete(&OpenFlareApplyLog{})
+	return result.RowsAffected, result.Error
+}