Use player names in two-player briscola

Classic briscola has no partnerships: its "teams" are just the two
players, but the UI labelled them Team A/Team B.

- add is_individual_game() and GameView::player_name_for_team() to the
  model;
- the briscola table HUD reads "Alice 0 — 0 Bob (target 61)" and the
  seat panels drop the Team badge for two-player games;
- the deal summary and game-over screen name the sides and the winner;
- the waiting room and join preview hide the Team badge.

briscola a quattro and scopone keep their team labels, and the match
history table is unchanged.

web/src/pages/briscola.rs

@@ -7,7 +7,9 @@ use sycamore::prelude::*;
 
 use crate::components::card::{card_back, card_img};
 use crate::components::copy::CopyButton;
-use crate::model::{hand_sort_key, suit_name, GameView, PlayerView, Scores};
+use crate::model::{
+    hand_sort_key, is_individual_game, suit_name, GameView, PlayerView, Scores,
+};
 use crate::pages::game::watch_link;
 
 fn player_for_seat(game: &GameView, seat: usize) -> Option<PlayerView> {
@@ -25,7 +27,10 @@ fn seat_panel(game: GameView, seat: usize, position: &'static str) -> View {
         if active { " active" } else { "" }
     );
     let name = player.name.clone();
-    let team = player.team.clone();
+    let team_badge = (!is_individual_game(&game.game_type)).then(|| {
+        let team = player.team.clone();
+        view! { span(class="team-badge") { "Team " (team) } }
+    });
     let points = player.points;
     let captured = player.captured_count;
     let backs = (0..player.cards_left)
@@ -35,7 +40,7 @@ fn seat_panel(game: GameView, seat: usize, position: &'static str) -> View {
         div(class=cls) {
             div(class="seat-name") {
                 (name)
-                span(class="team-badge") { "Team " (team) }
+                (team_badge)
             }
             div(class="seat-cards") { (backs) }
             div(class="seat-stats") {
@@ -160,6 +165,19 @@ pub fn briscola_table(
     let scores = game.scores.unwrap_or(Scores { a: 0, b: 0 });
     let target = game.target_score;
     let deal = game.hand_number;
+    // Two-player briscola has no partnerships: show the players' names.
+    let score_line = if is_individual_game(&game.game_type) {
+        format!(
+            "{} {} — {} {} (target {})",
+            game.player_name_for_team("A"),
+            scores.a,
+            scores.b,
+            game.player_name_for_team("B"),
+            target
+        )
+    } else {
+        format!("Team A {} — {} Team B (target {})", scores.a, scores.b, target)
+    };
 
     let (grid_cls, top, left, right) = if player_count == 2 {
         (
@@ -234,10 +252,7 @@ pub fn briscola_table(
                 span { "Deal " (deal) }
                 (trump_badge)
                 (spectator_badge)
-                span(class="hud-scores") {
-                    "Team A " (scores.a) " — " (scores.b) " Team B (target "
-                    (target) ")"
-                }
+                span(class="hud-scores") { (score_line) }
                 span(class=turn_cls) { (turn_note) }
                 (countdown)
                 CopyButton(text=watch_link, label="Copy watch link".to_string())