fix: replace undefined ptr.Ptr with new() in retry_test.go

The TestRetryable_IncrementNonRetryableAttempt test used ptr.Ptr()
which was never imported. Replace with the new() pattern already used
throughout the rest of the test file.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Matovidlo

internal/pkg/service/stream/storage/model/retry_test.go

@@ -250,29 +250,29 @@ func TestRetryable_IncrementNonRetryableAttempt(t *testing.T) {
 	assert.Equal(t, Retryable{
 		RetryAttempt:  1,
 		RetryReason:   "credential expired",
-		FirstFailedAt: ptr.Ptr(utctime.MustParse("2000-01-01T00:00:00.000Z")),
-		LastFailedAt:  ptr.Ptr(utctime.MustParse("2000-01-01T00:00:00.000Z")),
-		RetryAfter:    ptr.Ptr(utctime.MustParse("2000-01-01T02:00:00.000Z")), // +2 hours
+		FirstFailedAt: new(utctime.MustParse("2000-01-01T00:00:00.000Z")),
+		LastFailedAt:  new(utctime.MustParse("2000-01-01T00:00:00.000Z")),
+		RetryAfter:    new(utctime.MustParse("2000-01-01T02:00:00.000Z")), // +2 hours
 	}, v)
 
 	// Second attempt - FirstFailedAt should remain unchanged
 	v.IncrementNonRetryableAttempt(utctime.MustParse("2000-01-01T02:00:00.000Z").Time(), "credential expired", fixedInterval)
 	assert.Equal(t, Retryable{
 		RetryAttempt:  2,
 		RetryReason:   "credential expired",
-		FirstFailedAt: ptr.Ptr(utctime.MustParse("2000-01-01T00:00:00.000Z")), // unchanged
-		LastFailedAt:  ptr.Ptr(utctime.MustParse("2000-01-01T02:00:00.000Z")),
-		RetryAfter:    ptr.Ptr(utctime.MustParse("2000-01-01T04:00:00.000Z")), // +2 hours (fixed)
+		FirstFailedAt: new(utctime.MustParse("2000-01-01T00:00:00.000Z")), // unchanged
+		LastFailedAt:  new(utctime.MustParse("2000-01-01T02:00:00.000Z")),
+		RetryAfter:    new(utctime.MustParse("2000-01-01T04:00:00.000Z")), // +2 hours (fixed)
 	}, v)
 
 	// Third attempt - still fixed interval
 	v.IncrementNonRetryableAttempt(utctime.MustParse("2000-01-01T04:00:00.000Z").Time(), "credential expired", fixedInterval)
 	assert.Equal(t, Retryable{
 		RetryAttempt:  3,
 		RetryReason:   "credential expired",
-		FirstFailedAt: ptr.Ptr(utctime.MustParse("2000-01-01T00:00:00.000Z")), // unchanged
-		LastFailedAt:  ptr.Ptr(utctime.MustParse("2000-01-01T04:00:00.000Z")),
-		RetryAfter:    ptr.Ptr(utctime.MustParse("2000-01-01T06:00:00.000Z")), // +2 hours (fixed)
+		FirstFailedAt: new(utctime.MustParse("2000-01-01T00:00:00.000Z")), // unchanged
+		LastFailedAt:  new(utctime.MustParse("2000-01-01T04:00:00.000Z")),
+		RetryAfter:    new(utctime.MustParse("2000-01-01T06:00:00.000Z")), // +2 hours (fixed)
 	}, v)
 }