#####User stories
As a user with permission to view private contributions, I want to see all participant activity —including those who registered privately—, so I can understand the full impact of the event without making their information public.
As a private participant, I want to know that my privacy will not be compromised through public tables or summarized data, so I feel safe participating.
As a public participant, I want to understand that some contributions might be hidden due to privacy settings, so I’m not confused by incomplete totals.
#####Background
This task supports private registrant support as part of the broader Collaborative Contributions MVP, enabling more nuanced control over visibility of contribution data within events. The Contributions tab offers a full activity feed of event contributions, but we should limit showing certain data based on public/private participation. We should aim to establish how private registrant data should be handled in the UI, whether organizers see specific messages, and what data remains hidden.
####Acceptance criteria
* Given a user is viewing the Contributions tab of an event that includes private participants,
** And the user does not have permission to view private participant data,
*** Then the aggregate statistics must exclude data from private participants,
**** And the contributions table must also exclude rows representing private participant activity.
* Given there is at least one private participant whose data is not visible to the current viewer,
** And the current viewer is not a private participant,
*** Then a notice message must appear at the top of the Contributions tab with the copy: "`The statistics and contributions listed on this page do not include data from private participants.`"
* Given the current viewer is a private participant,
** And there are other private participants whose data is hidden from them,
*** Then a notice message must appear at the top of the Contributions tab with the copy: "`The statistics and contributions listed on this page do not include data from other private participants.`"
* Given the current viewer has permission to see private participant data (e.g., the event organizer, the private participant viewing their own data, or a wiki admin),
** Then no notice message should appear at the top of the Contributions tab,
*** And all private contributions and stats must be visible and included normally in the aggregate and granular data.
* If possible, there should be a way to indicate that an edit is from a private participant (if the user can access it), such as a private icon next to the username.
####Designs
{F65916663}
{F65916659}