feat: bootstrap goaichat CLI and config system

cmd/goaichat/main.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"log/slog"
+	"os"
+
+	"github.com/stig/goaichat/internal/app"
+	"github.com/stig/goaichat/internal/config"
+)
+
+func main() {
+	var configPath string
+	flag.StringVar(&configPath, "config", "", "Path to configuration file")
+	flag.Parse()
+
+	logger := slog.New(slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: slog.LevelInfo}))
+
+	cfg, err := config.Load(configPath)
+	if err != nil {
+		logger.Error("failed to load configuration", "error", err)
+		os.Exit(1)
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	application := app.New(logger, cfg)
+	if err := application.Run(ctx); err != nil {
+		logger.Error("application terminated with error", "error", err)
+		os.Exit(1)
+	}
+}