feat: display symlink, junction, and hardlink targets in directory listings

[relmer]

Summary

Display the target path for junctions, symlinks, and hardlinks in all display modes (normal, wide, bare, tree). Currently, reparse points are detected in tree mode and shown as [→ target], but this should be extended to all modes.

Details

Junctions & Symlinks

• Show → target_path after the filename in normal/tree modes
• Use DeviceIoControl with FSCTL_GET_REPARSE_POINT to resolve targets (already partially implemented for tree mode reparse guard)
• Distinguish junction vs symlink via reparse tag (IO_REPARSE_TAG_MOUNT_POINT vs IO_REPARSE_TAG_SYMLINK)

Hardlinks

• Show hardlink count when > 1 (e.g., [2 links])
• Use GetFileInformationByHandle for nNumberOfLinks
• Optionally: FindFirstFileNameW/FindNextFileNameW to enumerate all paths

Scope

• Extend to all display modes: normal, wide, bare, tree
• Add configurable color for link target text (new Attribute variant)
• Consider a /Links switch to opt-in to hardlink enumeration (performance: requires opening each file)

Prior Art

• eza and lsd both display symlink targets inline
• Current TCDir tree mode already detects reparse points (FILE_ATTRIBUTE_REPARSE_POINT) and prevents cycle traversal

Notes

• This feature should be implemented in TCDir first, then ported to RCDir per the standard workflow