refactor(project): Reorganize frontend and backend directories

backend/config/mysql/my-master.cnf

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+# MySQL 主节点配置 (Node-01)
+# GTID 主从复制
+
+[mysqld]
+# 基础配置
+user = mysql
+port = 3306
+bind-address = 0.0.0.0
+character-set-server = utf8mb4
+collation-server = utf8mb4_unicode_ci
+default-authentication-plugin = mysql_native_password
+
+# 连接配置
+max_connections = 500
+max_connect_errors = 100
+wait_timeout = 28800
+interactive_timeout = 28800
+connect_timeout = 10
+
+# 缓冲配置 (8GB内存建议)
+innodb_buffer_pool_size = 2G
+innodb_buffer_pool_instances = 4
+innodb_log_buffer_size = 64M
+innodb_log_file_size = 512M
+innodb_flush_log_at_trx_commit = 1
+innodb_flush_method = O_DIRECT
+
+# 日志配置
+log-error = /var/lib/mysql/mysql-error.log
+slow_query_log = 1
+slow_query_log_file = /var/lib/mysql/mysql-slow.log
+long_query_time = 2
+log_queries_not_using_indexes = 0
+
+# 临时目录
+tmpdir = /tmp
+
+# 二进制日志配置 (主节点)
+server-id = 1
+log-bin = mysql-bin
+binlog_format = ROW
+binlog_row_image = FULL
+binlog_cache_size = 1M
+max_binlog_size = 500M
+expire_logs_days = 7
+sync_binlog = 1
+
+# GTID 配置
+gtid-mode = ON
+enforce-gtid-consistency = ON
+log-slave-updates = ON
+
+# 复制配置
+binlog-do-db = video_auth
+binlog-do-db = video_user
+binlog-do-db = video_content
+binlog-do-db = video_comment
+binlog-do-db = video_recommend
+binlog-do-db = video_admin
+binlog-do-db = nacos_config
+
+# 安全配置
+skip-name-resolve
+sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION
+
+[mysql]
+default-character-set = utf8mb4
+prompt = '\u@\h [\d]> '
+
+[client]
+default-character-set = utf8mb4

backend/config/mysql/my-slave.cnf

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+# MySQL 高可用配置
+# 从节点配置 (Node-02, Node-03)
+# 注意: 每个从节点需要设置不同的 server-id
+
+[mysqld]
+# 基础配置
+user = mysql
+port = 3306
+bind-address = 0.0.0.0
+character-set-server = utf8mb4
+collation-server = utf8mb4_unicode_ci
+default-authentication-plugin = mysql_native_password
+
+# 连接配置
+max_connections = 500
+max_connect_errors = 100
+wait_timeout = 28800
+interactive_timeout = 28800
+
+# 缓冲配置
+innodb_buffer_pool_size = 1G
+innodb_buffer_pool_instances = 4
+innodb_log_buffer_size = 64M
+innodb_log_file_size = 512M
+
+# 日志配置
+log-error = /var/lib/mysql/mysql-error.log
+slow_query_log = 1
+slow_query_log_file = /var/lib/mysql/mysql-slow.log
+long_query_time = 2
+
+# 主从复制配置 - 从节点
+# server-id 在docker-compose中通过环境变量设置
+# server-id = 2  # Node-02
+# server-id = 3  # Node-03
+log-bin = mysql-bin
+binlog_format = ROW
+binlog_row_image = FULL
+relay-log = relay-bin
+relay-log-index = relay-bin.index
+# 注意: read_only 和 super_read_only 应在主从复制配置完成后手动启用
+# 避免阻止容器初始化脚本执行
+# read_only = ON
+# super_read_only = ON
+
+# GTID配置
+gtid-mode = ON
+enforce-gtid-consistency = ON
+
+# 从节点并行复制
+slave_parallel_type = LOGICAL_CLOCK
+slave_parallel_workers = 4
+slave_preserve_commit_order = ON
+
+# 半同步复制 (可选)
+# plugin-load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
+# rpl_semi_sync_slave_enabled = 1
+
+[mysql]
+default-character-set = utf8mb4
+
+[client]
+default-character-set = utf8mb4