feat: add banner printing functionality to server startup

internal/bootstrap/banner.go

@@ -0,0 +1,43 @@
+package bootstrap
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"cs-agent/internal/pkg/config"
+)
+
+func printBanner() {
+	printBannerTo(os.Stdout, config.Current())
+}
+
+func printBannerTo(w io.Writer, cfg config.Config) {
+	_, _ = fmt.Fprint(w, renderBanner(cfg))
+}
+
+func renderBanner(cfg config.Config) string {
+	port := cfg.Server.Port
+	if port <= 0 {
+		port = 8080
+	}
+	dbType := cfg.DB.Type
+	if dbType == "" {
+		dbType = "unknown"
+	}
+
+	return fmt.Sprintf(`
+ ____  _          _ _        _    ___
+/ ___|| |__   ___| | |      / \  |_ _|
+\___ \| '_ \ / _ \ | |     / _ \  | |
+ ___) | | | |  __/ | |    / ___ \ | |
+|____/|_| |_|\___|_|_|   /_/   \_\___|
+
+:: Shell AI ::
+
+Port     : %d
+DB       : %s
+Address  : http://127.0.0.1:%d
+
+`, port, dbType, port)
+}

internal/bootstrap/banner_test.go

@@ -0,0 +1,42 @@
+package bootstrap
+
+import (
+	"strings"
+	"testing"
+
+	"cs-agent/internal/pkg/config"
+)
+
+func TestRenderBanner(t *testing.T) {
+	got := renderBanner(config.Config{
+		Server: config.ServerConfig{Port: 8083},
+		DB:     config.DBConfig{Type: "sqlite"},
+	})
+
+	expected := []string{
+		":: Shell AI ::",
+		"Port     : 8083",
+		"DB       : sqlite",
+		"Address  : http://127.0.0.1:8083",
+	}
+	for _, item := range expected {
+		if !strings.Contains(got, item) {
+			t.Fatalf("renderBanner() missing %q in:\n%s", item, got)
+		}
+	}
+}
+
+func TestRenderBannerDefaults(t *testing.T) {
+	got := renderBanner(config.Config{})
+
+	expected := []string{
+		"Port     : 8080",
+		"DB       : unknown",
+		"Address  : http://127.0.0.1:8080",
+	}
+	for _, item := range expected {
+		if !strings.Contains(got, item) {
+			t.Fatalf("renderBanner() missing %q in:\n%s", item, got)
+		}
+	}
+}

internal/bootstrap/server.go

@@ -25,6 +25,7 @@ func NewServer() (*gin.Engine, error) {
 	cfg := config.Current()
 
 	gin.SetMode(gin.ReleaseMode)
+	printBanner()
 
 	app := gin.New()
 	app.Use(corsMiddleware())