Rename ErrCampaignNoScopeSources to ErrCampaignNoSourcesSelected

Align the sentinel name with the validation it represents.

Signed-off-by: Cursor Agent <cursoragent@cursor.com>

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>

pkg/accessreview/campaign_service.go

@@ -428,7 +428,7 @@ func (s *Service) StartCampaign(
 			}
 
 			if len(campaignSources) == 0 {
-				return ErrCampaignNoScopeSources
+				return ErrCampaignNoSourcesSelected
 			}
 
 			now := time.Now()

pkg/accessreview/errors.go

@@ -23,7 +23,7 @@ package accessreview
 import "errors"
 
 var (
-	ErrCampaignNoScopeSources             = errors.New("cannot start campaign: no scope sources configured")
+	ErrCampaignNoSourcesSelected          = errors.New("cannot start campaign: no scope sources configured")
 	ErrCampaignNotDraft                   = errors.New("campaign must be in draft status")
 	ErrCampaignSourceOrganizationMismatch = errors.New("access source does not belong to the same organization")
 )