onboarding: lookup profile after accounts are added

To reduce the side effects of this change, we introduce a new UnknownId
action type:

  - SingleUnkIdAction

This can be returned from functions to signal that we need to do some
work to look for things. We add a `must_use` directive to this type
to ensure callers handle it.

Changelog-Fixed: Fix missing profiles when new accounts are added
Fixes: https://github.com/damus-io/notedeck/issues/356

src/test_data.rs

@@ -1,7 +1,7 @@
 use std::path::Path;
 
 use enostr::{FullKeypair, Pubkey, RelayPool};
-use nostrdb::ProfileRecord;
+use nostrdb::{ProfileRecord, Transaction};
 
 use crate::{user_account::UserAccount, Damus};
 
@@ -100,8 +100,11 @@ pub fn test_app() -> Damus {
     let mut app = Damus::mock(path);
 
     let accounts = get_test_accounts();
+    let txn = Transaction::new(&app.ndb).expect("txn");
     for account in accounts {
-        app.accounts_mut().add_account(account);
+        app.accounts_mut()
+            .add_account(account)
+            .process_action(&mut app.unknown_ids, &app.ndb, &txn)
     }
 
     app