update path handling

[ryardley]

          _:warning: Potential issue_

Implement proper tilde expansion in file paths

Using file.to_string_lossy().starts_with("~") assumes that paths starting with ~ are absolute, but Rust does not automatically expand ~ to the user's home directory. This may lead to incorrect path handling.

Consider implementing tilde (~) expansion explicitly:

 if file.is_absolute() || file.to_string_lossy().starts_with("~") {
     return file.clone();
 }

+// Add tilde expansion
+let expanded_file = if file.to_string_lossy().starts_with("~") {
+    let home_dir = dirs::home_dir().unwrap_or_else(|| PathBuf::from("/"));
+    home_dir.join(file.strip_prefix("~").unwrap_or(file))
+} else {
+    file.clone()
+};
+
+return expanded_file;

This ensures that paths starting with ~ are correctly expanded to the user's home directory.

Committable suggestion was skipped due to low confidence.

Originally posted by @coderabbitai[bot] in #156 (comment)

[ryardley]

resolved