submodules support

dot-add

@@ -45,6 +45,21 @@ add_one() {
   local REL="${FILE#$HOME/}"
   local DEST="$DOTFILES_DIR/$PACKAGE/$REL"
 
+  # If the path is a git repo, add it as a submodule instead of moving files
+  if [[ -d "$FILE/.git" ]]; then
+    local REMOTE
+    REMOTE="$(git -C "$FILE" remote get-url origin 2>/dev/null || true)"
+    if [[ -z "$REMOTE" ]]; then
+      echo "Error: '$FILE' is a git repo but has no remote origin — can't add as submodule" >&2
+      return 1
+    fi
+    mkdir -p "$(dirname "$DEST")"
+    rm -rf "$FILE"
+    git -C "$DOTFILES_DIR" submodule add "$REMOTE" "$PACKAGE/$REL"
+    echo "Added submodule: $REMOTE -> $DEST"
+    return 0
+  fi
+
   mkdir -p "$(dirname "$DEST")"
   mv "$FILE" "$DEST"
   echo "Moved: $FILE -> $DEST"