feat: initialize tenant workbench in shared database

internal/config/config_test.go

@@ -0,0 +1,26 @@
+package config
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestValidateRejectsDeprecatedTinodeDatabase(t *testing.T) {
+	cfg := defaultConfig()
+	cfg.MySQL.DSN = "root:root@tcp(127.0.0.1:3306)/tinode?parseTime=true"
+
+	err := cfg.validate()
+	if err == nil || !strings.Contains(err.Error(), "tinode is deprecated") {
+		t.Fatalf("validate() error = %v, want deprecated database error", err)
+	}
+}
+
+func TestDefaultConfigUsesMeetingIMDatabase(t *testing.T) {
+	cfg := defaultConfig()
+	if err := cfg.validate(); err != nil {
+		t.Fatalf("default config validation failed: %v", err)
+	}
+	if !strings.Contains(cfg.MySQL.DSN, "/meeting_im?") {
+		t.Fatalf("default mysql dsn = %q, want meeting_im database", cfg.MySQL.DSN)
+	}
+}