Add player profiles and community settings

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/internal/adapter/postgres/store_integration_test.go

@@ -63,6 +63,24 @@ func TestMigrationsAndReadiness(t *testing.T) {
 			t.Fatalf("%s table is missing", table)
 		}
 	}
+	var identityColumns int
+	if err := store.pool.QueryRow(ctx, `SELECT count(*) FROM information_schema.columns
+		WHERE table_name='players' AND column_name IN ('display_name','battle_tag')`).Scan(&identityColumns); err != nil {
+		t.Fatal(err)
+	}
+	if identityColumns != 2 {
+		t.Fatalf("player identity migration is incomplete: found %d columns", identityColumns)
+	}
+	var settingsTable, nicknameIndex, seriesEventIndex bool
+	if err := store.pool.QueryRow(ctx, `SELECT
+		to_regclass('public.community_settings') IS NOT NULL,
+		to_regclass('public.players_display_name_lower_uidx') IS NOT NULL,
+		to_regclass('public.series_event_id_idx') IS NOT NULL`).Scan(&settingsTable, &nicknameIndex, &seriesEventIndex); err != nil {
+		t.Fatal(err)
+	}
+	if !settingsTable || !nicknameIndex || !seriesEventIndex {
+		t.Fatalf("profile/settings migrations missing: settings=%v nickname=%v series=%v", settingsTable, nicknameIndex, seriesEventIndex)
+	}
 }
 
 func TestDiscordRoleSyncPersistence(t *testing.T) {