fix: harden multi-pod delivery and load verification

loadtest/im-pressure/main.go

@@ -7,6 +7,7 @@ import (
 	"log"
 	"os"
 	"os/signal"
+	"strings"
 	"syscall"
 	"time"
 )
@@ -33,6 +34,8 @@ func main() {
 		err = mergeCommand(os.Args[2:])
 	case "collect":
 		err = collectCommand(ctx, os.Args[2:])
+	case "verify-db":
+		err = verifyDBCommand(ctx, os.Args[2:])
 	default:
 		usage()
 		os.Exit(2)
@@ -42,6 +45,22 @@ func main() {
 	}
 }
 
+func verifyDBCommand(ctx context.Context, args []string) error {
+	fs := flag.NewFlagSet("verify-db", flag.ContinueOnError)
+	coordinator := fs.String("coordinator", "loadtest/im-pressure/results/coordinator.json", "coordinator ledger path")
+	output := fs.String("output", "-", "verification JSON output path, or - for stdout")
+	tenant := fs.String("tenant", "", "tenant code")
+	dsnEnv := fs.String("dsn-env", "MYSQL_DSN", "environment variable containing the business database DSN")
+	registryDB := fs.String("registry-db", "", "tenant registry database; defaults to TENANT_REGISTRY_DB")
+	if err := fs.Parse(args); err != nil {
+		return err
+	}
+	if strings.TrimSpace(*tenant) == "" {
+		return fmt.Errorf("--tenant is required")
+	}
+	return runDBVerify(ctx, *coordinator, *output, *tenant, *dsnEnv, *registryDB)
+}
+
 func prepareCommand(ctx context.Context, args []string) error {
 	fs := flag.NewFlagSet("prepare", flag.ContinueOnError)
 	configPath := fs.String("config", "loadtest/im-pressure/config.example.json", "JSON configuration path")
@@ -135,12 +154,14 @@ func collectCommand(ctx context.Context, args []string) error {
 	output := fs.String("output", "loadtest/im-pressure/results/metrics.jsonl", "snapshot output")
 	interval := fs.Duration("interval", 5*time.Second, "collection interval")
 	duration := fs.Duration("duration", 10*time.Minute, "collection duration")
+	coordinatorURL := fs.String("coordinator", "", "optional coordinator base URL used to label before/during phases")
+	coordinatorOutput := fs.String("coordinator-output", "", "coordinator JSON path used to detect the after phase")
 	if err := fs.Parse(args); err != nil {
 		return err
 	}
-	return runCollector(ctx, urls, *output, *interval, *duration)
+	return runCollector(ctx, urls, *output, *interval, *duration, *coordinatorURL, *coordinatorOutput)
 }
 
 func usage() {
-	fmt.Fprintln(os.Stderr, "usage: im-pressure <prepare|verify|coordinator|agent|merge|collect> [flags]")
+	fmt.Fprintln(os.Stderr, "usage: im-pressure <prepare|verify|coordinator|agent|merge|collect|verify-db> [flags]")
 }