chore: bootstrap agent-notify Go project

Co-authored-by: Cursor <cursoragent@cursor.com>

cmd/agent-notify/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"fmt"
+	"os"
+)
+
+func main() {
+	if len(os.Args) < 2 {
+		printUsage()
+		os.Exit(1)
+	}
+	switch os.Args[1] {
+	case "send", "hook", "install", "test", "doctor", "help", "-h", "--help":
+		fmt.Fprintf(os.Stderr, "agent-notify: %s not implemented yet\n", os.Args[1])
+		os.Exit(1)
+	default:
+		printUsage()
+		os.Exit(1)
+	}
+}
+
+func printUsage() {
+	fmt.Fprint(os.Stderr, `Usage: agent-notify <command>
+Commands:
+  send     Send a notification
+  hook     Agent hook entrypoint
+  install  Install hook configs
+  test     Send test notification
+  doctor   Check environment
+`)
+}