Add archive storage path configuration

internal/artifacts/run_id_test.go

@@ -0,0 +1,37 @@
+package artifacts
+
+import (
+	"bytes"
+	"regexp"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestNewRunIDWithFormat(t *testing.T) {
+	now := time.Date(2026, 5, 15, 3, 15, 22, 0, time.UTC)
+	random := bytes.NewReader([]byte{0xa1, 0xb2, 0xc3, 0xd4})
+
+	runID, err := NewRunIDWith(now, random)
+	if err != nil {
+		t.Fatalf("NewRunIDWith() error = %v", err)
+	}
+	if runID != "20260515T031522Z-a1b2c3d4" {
+		t.Fatalf("runID = %q, want %q", runID, "20260515T031522Z-a1b2c3d4")
+	}
+}
+
+func TestNewRunIDWithShape(t *testing.T) {
+	runID, err := NewRunIDWith(time.Now().UTC(), bytes.NewReader([]byte{0x01, 0x02, 0x03, 0x04}))
+	if err != nil {
+		t.Fatalf("NewRunIDWith() error = %v", err)
+	}
+	pattern := regexp.MustCompile(`^\d{8}T\d{6}Z-[0-9a-f]{8}$`)
+	if !pattern.MatchString(runID) {
+		t.Fatalf("runID = %q, want pattern %q", runID, pattern.String())
+	}
+	suffix := runID[len(runID)-8:]
+	if strings.ToLower(suffix) != suffix {
+		t.Fatalf("runID suffix = %q, want lowercase", suffix)
+	}
+}