Fix code quality: trailing whitespace, unused imports, clippy warnings

- Fix trailing whitespace in kex.rs and s3.rs
- Add missing KexProposal import in kex_complete.rs
- Auto-fix clippy warnings across all crates
- All 153 tests pass

markbase-core/src/ssh_server/mod.rs

@@ -1,28 +1,28 @@
 // SSH服务器模块（手动实现SSH协议）
 // 参考OpenSSH源码实现完整的SSH/SFTP/SCP/rsync协议
 
-pub mod server;
-pub mod packet;
-pub mod version;
-pub mod crypto;
-pub mod kex;
-pub mod kex_exchange;
-pub mod kex_complete;
-pub mod cipher;
 pub mod auth;
 pub mod channel;
-pub mod sftp_handler;
-pub mod scp_handler;
+pub mod cipher;
+pub mod crypto;
+pub mod data_forwarder; // Phase 13.5: 数据传输模块
+pub mod kex;
+pub mod kex_complete;
+pub mod kex_exchange;
+pub mod packet;
+pub mod port_forward; // Phase 13: 端口转发模块
+pub mod port_forward_listener; // Phase 13.4: 监听线程模块
 pub mod rsync_handler;
-pub mod sshbuf;                    // Phase 15: SSH Buffer 零拷贝管理（参考OpenSSH sshbuf.c）
-pub mod port_forward;           // Phase 13: 端口转发模块
-pub mod ssh_security_config;    // Phase 13.1: 企业级安全配置
-pub mod port_forward_listener;  // Phase 13.4: 监听线程模块
-pub mod data_forwarder;         // Phase 13.5: 数据传输模块
-pub mod window_manager;         // Phase 13.6-13.7: Window size + Channel生命周期
+pub mod scp_handler;
+pub mod server;
+pub mod sftp_handler;
+pub mod ssh_security_config; // Phase 13.1: 企业级安全配置
+pub mod sshbuf; // Phase 15: SSH Buffer 零拷贝管理（参考OpenSSH sshbuf.c）
+pub mod version;
+pub mod window_manager; // Phase 13.6-13.7: Window size + Channel生命周期
 
+pub use packet::{PacketType, SshPacket};
 pub use server::SshServer;
-pub use packet::{SshPacket, PacketType};
-pub use version::VersionExchange;
-pub use ssh_security_config::SshSecurityConfig;  // Phase 13.1: 导出安全配置
-pub use sshbuf::SshBuf;                            // Phase 15: 导出 SSH Buffer
+pub use ssh_security_config::SshSecurityConfig; // Phase 13.1: 导出安全配置
+pub use sshbuf::SshBuf;
+pub use version::VersionExchange; // Phase 15: 导出 SSH Buffer