Handle symbolic links pointing to files

[SakolB]

Description

Currently, when a symbolic link points to a directory, bcd correctly cd's into it. However, when a symbolic link points to a file, the behavior is unclear or may not work as expected.

Expected Behavior

When selecting a symbolic link that points to a file, bcd should cd into the parent directory of the symlink itself (not the target file's directory).

Example:

/home/user/projects/mylink -> /etc/config/file.conf

When selecting mylink, should cd to /home/user/projects/

Current Behavior

Unknown - needs testing to confirm current behavior with file symlinks.

Proposed Solution

1. Detect if the selected path is a symbolic link
2. If it points to a file, resolve to the symlink's parent directory
3. If it points to a directory, keep current behavior (cd into it)

Implementation Location

• Shell integration functions (scripts/bcd.bash, scripts/bcd.zsh, scripts/bcd.fish)
• The logic in the if [[ -f "$selected_path" ]] branch may need to check for symlinks

Acceptance Criteria

• Selecting a symlink pointing to a file cd's to the symlink's parent directory
• Selecting a symlink pointing to a directory cd's into that directory
• Selecting a regular file cd's to its parent directory (existing behavior)
• Selecting a regular directory cd's into it (existing behavior)