feat: multiple improvements, additions, vibin'

functions/nvm_notify.fish

@@ -0,0 +1,32 @@
+function nvm_notify -a message -d "Send notification for Node.js version changes"
+    if test -z "$message"
+        return 1
+    end
+
+    # Check if notifications are enabled
+    if set -q _nvm_auto_use_no_notifications
+        return
+    end
+
+    # Try different notification methods
+    if command -q osascript # macOS
+        osascript -e "display notification \"$message\" with title \"nvm-auto-use\""
+    else if command -q notify-send # Linux
+        notify-send nvm-auto-use "$message"
+    else if command -q terminal-notifier # macOS alternative
+        terminal-notifier -title nvm-auto-use -message "$message"
+    end
+end
+
+function nvm_project_detect -d "Check if current directory is a Node.js project"
+    set -l dir (pwd)
+
+    while test "$dir" != /
+        if test -f "$dir/package.json"
+            return 0
+        end
+        set dir (dirname "$dir")
+    end
+
+    return 1
+end