chore: add fmt+clippy convention to CLAUDE.md and apply nightly fmt

CLAUDE.md

@@ -106,4 +106,5 @@ Platform-specific dependencies: SSH and FTP crates use different TLS backends on
 
 ## Other conventions
 
+- Always run `cargo +nightly fmt --all` and `cargo clippy --no-default-features -- -Dwarnings` after modifying Rust code
 - Always put plans to `./.claude/plans/`

src/filetransfer/remotefs_builder.rs

@@ -13,8 +13,10 @@ use remotefs_kube::KubeMultiPodFs as KubeFs;
 use remotefs_smb::SmbOptions;
 #[cfg(smb)]
 use remotefs_smb::{SmbCredentials, SmbFs};
-use remotefs_ssh::{NoCheckServerKey, RusshSession as SshSession};
-use remotefs_ssh::{ScpFs, SftpFs, SshAgentIdentity, SshConfigParseRule, SshOpts};
+use remotefs_ssh::{
+    NoCheckServerKey, RusshSession as SshSession, ScpFs, SftpFs, SshAgentIdentity,
+    SshConfigParseRule, SshOpts,
+};
 use remotefs_webdav::WebDAVFs;
 
 #[cfg(not(smb))]