A post on a wall says whose, and the persona takes posts off its own

PrivaPub hosts what a persona's followers write on its wall (Smithereen's, FEP-400e) and shows posts written on walls
elsewhere to their owners' followers. A card names the wall (privapub.wall, data-wall, linking the profile), and one
written on the persona's own wall is taken off from the card's menu, which PrivaPub tells as a Remove and Smithereen
applies as a deletion. WallTests checks it against Smithereen.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

CLAUDE.md

@@ -239,6 +239,9 @@ supplies:
   persona pins and unpins its own public and unlisted posts from the card's menu.
   An account that moved says where to (`Account.Moved`, which PrivaPub fills once the new account names the old one),
   linking the new account's profile.
+- **Walls** (Smithereen's, FEP-400e): a post written on someone's wall says whose (`privapub.wall`, `data-wall`, linking
+  that profile); one written on the persona's own wall is taken off from the card's menu (`DELETE` on the status, which
+  PrivaPub turns into a `Remove` that Smithereen takes for a deletion). Only the persona's followers may write there.
   A card in a fixed-height flex column with `overflow-hidden` needs `flex-none`, or it collapses to nothing.
 - **Groups** (`Pages/Groups.razor` at `/groups`): the persona's communities and circles (`GroupService`, `/clientapi/group`):
   made (a circle unless it is a community, with an invitation code and an optional password), joined by invitation and