Function resolve_paths_for_get 

pub fn resolve_paths_for_get(
    paths: Vec<PathBuf>,
    glob_pattern: Option<&str>,
    dvs_paths: &DvsPaths,
) -> Result<HashSet<PathBuf>>

Resolve paths for get command by scanning tracked metadata:

• Explicit files or directories: filtered to tracked files under them
• Glob: applied to cwd-relative paths within matched files
• No paths + no glob: returns all tracked files under cwd