Update member UI and related app changes

tests/test_repository.py

@@ -18,6 +18,7 @@ def test_repository_creates_transparent_member_record(tmp_path) -> None:
     member = repository.create_member(
         first_name="Ada",
         last_name="Lovelace",
+        nickname="Enchantress",
         email="ada@example.org",
         birth_date="1990-12-10",
         member_number="0042",
@@ -32,6 +33,7 @@ def test_repository_creates_transparent_member_record(tmp_path) -> None:
 
     raw = json.loads((member_dir / "member.json").read_text(encoding="utf-8"))
     assert raw["person"]["first_name"] == "Ada"
+    assert raw["person"]["nickname"] == "Enchantress"
     assert raw["schema_version"] == 1
 
 
@@ -41,12 +43,13 @@ def test_search_matches_name_email_number_and_german_birth_date(tmp_path) -> Non
     member = repository.create_member(
         first_name="Jörg",
         last_name="Müller",
+        nickname="Jogi",
         email="joerg.mueller@example.org",
         birth_date="1990-04-23",
         member_number="C3-007",
     )
 
-    for query in ("Jorg Muller", "mueller@example.org", "C3-007", "23.04.1990"):
+    for query in ("Jorg Muller", "Jogi", "mueller@example.org", "C3-007", "23.04.1990"):
         assert [result.member_id for result in repository.search(query)] == [member.member_id]
 
 
@@ -138,6 +141,7 @@ def test_automatic_member_numbers_are_sequential_and_preview_does_not_consume(tm
     first = repository.create_member(first_name="First", last_name="Member")
     second = repository.create_member(first_name="Second", last_name="Member")
 
+
     assert first.member_number == "CCMA-0001"
     assert second.member_number == "CCMA-0002"
     assert repository.preview_member_number() == "CCMA-0003"