feat: initial scaffold with context adapters and litellm pkg

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/__PROJECT_NAME__/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"google.golang.org/adk/agent"
+	"google.golang.org/adk/agent/llmagent"
+	"google.golang.org/adk/runner"
+	"google.golang.org/adk/session"
+	"google.golang.org/genai"
+
+	"__MODULE_PATH__/pkg/litellm"
+)
+
+func main() {
+	ctx := context.Background()
+
+	shutdown, err := litellm.SetupTelemetry(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "telemetry: %v\n", err)
+		os.Exit(1)
+	}
+	defer shutdown(ctx)
+
+	llm := litellm.New(
+		env("LITELLM_MODEL", "berget/llama-3.3-70b"),
+		env("LITELLM_BASE_URL", "https://llm-api.d-ma.be/v1"),
+		mustEnv("LITELLM_API_KEY"),
+	)
+
+	ag, err := llmagent.New(llmagent.Config{
+		Name:        "__PROJECT_NAME__",
+		Description: "TODO: describe what this agent does",
+		Model:       llm,
+		Instruction: "You are a helpful assistant.",
+	})
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "agent: %v\n", err)
+		os.Exit(1)
+	}
+
+	r, err := runner.New(runner.Config{
+		AppName:           "__PROJECT_NAME__",
+		Agent:             ag,
+		SessionService:    session.InMemoryService(),
+		AutoCreateSession: true,
+	})
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "runner: %v\n", err)
+		os.Exit(1)
+	}
+
+	msg := genai.NewContentFromText("Hello!", "user")
+	events := r.Run(ctx, "user-1", "session-1", msg, agent.RunConfig{})
+
+	for ev, err := range events {
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "run: %v\n", err)
+			os.Exit(1)
+		}
+		if ev == nil || ev.Content == nil {
+			continue
+		}
+		for _, p := range ev.Content.Parts {
+			if p != nil && p.Text != "" {
+				fmt.Println(p.Text)
+			}
+		}
+	}
+}
+
+func env(key, fallback string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return fallback
+}
+
+func mustEnv(key string) string {
+	v := os.Getenv(key)
+	if v == "" {
+		fmt.Fprintf(os.Stderr, "required env var %s not set\n", key)
+		os.Exit(1)
+	}
+	return v
+}