Tracker: Filesystem v2.2.0 #5263

Summary

Tracks the filesystem server work that ships in v2.2.0.

Sub-issues

• filesystem: document hard-link behavior and report the link count in get_file_info #5226 filesystem: document hard-link behavior and report the link count in get_file_info
• filesystem: move_file fails across filesystems (EXDEV) #5188 filesystem: move_file fails across filesystems (EXDEV)
• filesystem: read_text_file head/tail mishandle line endings (tail drops a line after a final newline; head keeps \r on CRLF) #5187 filesystem: read_text_file head/tail mishandle line endings (tail drops a line after a final newline; head keeps \r on CRLF)
• filesystem: realpath ENOENT on Windows SUBST/mapped drives drops roots and refuses valid paths (needs a Windows repro) #5185 filesystem: realpath ENOENT on Windows SUBST/mapped drives drops roots and refuses valid paths (needs a Windows repro)
• filesystem: a client Root is allowed only in its realpath form, unlike command-line directories #5183 filesystem: a client Root is allowed only in its realpath form, unlike command-line directories
• filesystem 1.0.0: write_file/edit_file refuse every overwrite on Windows ("was replaced while it was being opened") because lstat reports dev 0n while fstat reports the volume serial #5154 filesystem 1.0.0: write_file/edit_file refuse every overwrite on Windows ("was replaced while it was being opened") because lstat reports dev 0n while fstat reports the volume serial
• filesystem: recursive search can hang on macOS CloudStorage / lazy provider paths #4162 filesystem: recursive search can hang on macOS CloudStorage / lazy provider paths
• filesystem: Windows path rejected when request casing matches neither the configured nor on-disk spelling #470 filesystem: Windows path rejected when request casing matches neither the configured nor on-disk spelling
• filesystem: bounded-walk 100000-entry test times out on slow Windows runners (vitest's 5 s default) #5328 filesystem: bounded-walk 100000-entry test times out on slow Windows runners (vitest's 5 s default)