fix: always follow symlinks when pasting remote files

[sxyazi]

Follow-up to #3396

[Copilot]

Pull request overview

This PR fixes symlink handling when pasting files across different filesystems (e.g., from remote SFTP to local). The main change is to always follow symlinks when copying between different schemes, ensuring that the actual file content is copied rather than just creating a dangling symlink reference.

• Changed symlink function signatures from AsPath to AsStrand to support cross-filesystem paths
• Introduced follow1 field to automatically follow symlinks when pasting across filesystem boundaries
• Refactored timeout handling and buffer size constants for better maintainability

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
yazi-vfs/src/provider/sftp/sftp.rs	Updated symlink method signature to use AsStrand instead of AsPath
yazi-vfs/src/provider/providers.rs	Updated symlink method signatures to use AsStrand trait
yazi-vfs/src/provider/provider.rs	Updated public symlink function signatures to use AsStrand
yazi-vfs/src/provider/copier.rs	Extracted magic numbers to named constants (BUF_SIZE, PER_CHUNK) and refactored error handling
yazi-sftp/src/session.rs	Increased default timeout from 30s to 45s and extracted send_with_timeout method
yazi-sftp/src/fs/read_dir.rs	Added configurable timeout for directory reading operations
yazi-scheduler/src/scheduler.rs	Implemented follow1 logic to automatically follow symlinks when schemes differ, simplified error handling
yazi-scheduler/src/file/in.rs	Renamed follow field to follow1 with formatting alignment
yazi-scheduler/src/file/file.rs	Updated paste logic to check follow1 before attempting rename, removed filesystem check from link_do
yazi-fs/src/provider/traits.rs	Changed symlink trait method signatures to accept AsStrand
yazi-fs/src/provider/local/local.rs	Updated local provider's symlink methods to use AsStrand
yazi-fs/src/path/relative.rs	Fixed path kind selection to use source path instead of target path

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[Copilot]

Duration::from_mins does not exist in the standard library. Use Duration::from_secs(5 * 60) instead to create a 5-minute duration.

Suggested change

	.send_with_timeout(requests::ReadDir::new(&self.handle), Duration::from_mins(5))
	.send_with_timeout(requests::ReadDir::new(&self.handle), Duration::from_secs(5 * 60))