chore: import upstream snapshot with attribution

examples/mcp/hello/main.go

@@ -0,0 +1,65 @@
+// Package main demonstrates a minimal MCP-enabled service.
+//
+// This is the simplest possible example showing:
+// - Automatic documentation extraction from Go comments
+// - MCP gateway setup
+// - Ready for use with Claude Code
+package main
+
+import (
+	"context"
+	"log"
+
+	"go-micro.dev/v6"
+	"go-micro.dev/v6/gateway/mcp"
+)
+
+// Greeter service handles greeting operations
+type Greeter struct{}
+
+// SayHello greets a person by name. Returns a friendly greeting message.
+//
+// @example {"name": "Alice"}
+func (g *Greeter) SayHello(ctx context.Context, req *HelloRequest, rsp *HelloResponse) error {
+	rsp.Message = "Hello " + req.Name + "!"
+	return nil
+}
+
+// HelloRequest contains the greeting parameters
+type HelloRequest struct {
+	Name string `json:"name" description:"Person's name to greet"`
+}
+
+// HelloResponse contains the greeting result
+type HelloResponse struct {
+	Message string `json:"message" description:"The greeting message"`
+}
+
+func main() {
+	// Create service
+	service := micro.NewService("greeter",
+		micro.Address(":9090"),
+		// Start MCP gateway alongside the service
+		mcp.WithMCP(":3000"),
+	)
+
+	service.Init()
+
+	// Register handler — docs extracted automatically from comments
+	if err := service.Handle(new(Greeter)); err != nil {
+		log.Fatal(err)
+	}
+
+	log.Println("Greeter service starting...")
+	log.Println("Service:     http://localhost:9090")
+	log.Println("MCP Gateway: http://localhost:3000")
+	log.Println("MCP Tools:   http://localhost:3000/mcp/tools")
+	log.Println()
+	log.Println("Use with Claude Code:")
+	log.Println("  micro mcp serve")
+
+	// Run service
+	if err := service.Run(); err != nil {
+		log.Fatal(err)
+	}
+}