fix: Correctly parse hidden files like .gitignore without extensions

Co-authored-by: aider (gemini/gemini-2.5-flash) <aider@aider.chat>

mvi.sh

@@ -38,14 +38,14 @@ indexed_path() {
   name=$(basename -- "$target")
 
   # Dela upp name i bas + ev. ext (sista punkten räknas som extension-separator)
-  if [[ "$name" = .* && "$name" != *.* ]]; then
-    # Dold fil utan extension (".env")
+  if [[ "$name" =~ ^\.[^.]*$ ]]; then
+    # Dold fil utan extension (".env", ".gitignore")
     base="$name"
     ext=""
-  elif [[ "$name" = *.* ]]; then
+  elif [[ "$name" = *.* ]]; then # Filer med punkt och extension (t.ex. "fil.txt", "arkiv.tar.gz", ".tar.gz")
     base="${name%.*}"
     ext=".${name##*.}"
-  else
+  else # Filer utan punkt eller extension (t.ex. "fil", "mapp")
     base="$name"
     ext=""
   fi