Fix variant-aware fleet card map labels (Refs #150)

src/lib/ui/components/ServerCard.svelte

@@ -5,7 +5,8 @@
     import type { RosterPlayer, Health } from '$ui/stores/servers.js';
     import { telemetryByServer, uiNow } from '$ui/stores/servers.js';
     import { elapsedSince } from '$ui/duration.js';
-    import { mapTitle, serverIdentity, serverTitle } from '$ui/server-labels.js';
+    import { serverIdentity, serverTitle } from '$ui/server-labels.js';
+    import { fleetIdentity } from '$lib/fleet-overview.js';
     import { decodeRconError, rconFixHint } from '$ui/rconError.js';
     import Card from './primitives/Card.svelte';
     import Badge from './primitives/Badge.svelte';
@@ -20,6 +21,9 @@
         name: string;
         players?: number | null;
         map?: string | null;
+        game?: string | null;
+        mapSlug?: string | null;
+        gameMode?: string | null;
         gametype?: string | null;
         roster?: RosterPlayer[] | null;
         health?: Health;
@@ -45,6 +49,9 @@
         name,
         players = null,
         map = null,
+        game: serverGame = null,
+        mapSlug = null,
+        gameMode = null,
         roster = null,
         health = 'offline',
         lastSeenAt = null,
@@ -76,8 +83,17 @@
     const compact = $derived(compactEmpty && health === 'online' && players === 0 && !restarting);
     const state = $derived(restarting ? 'restarting' : compact ? 'ready' : health);
     const error = $derived(decodeRconError(lastError));
-    const mapLabel = $derived(mapTitle(map));
-    const showMap = $derived(mapLabel !== '—' && mapLabel !== title);
+    const mapLabel = $derived(
+        fleetIdentity({
+            name,
+            game: serverGame,
+            map,
+            last_map: null,
+            map_slug: mapSlug,
+            game_mode: gameMode
+        }).map
+    );
+    const showMap = $derived(map !== null && mapLabel !== '—' && mapLabel !== title);
     const topRoster = $derived(
         (roster ?? [])
             .slice()

src/lib/ui/server-labels.ts

@@ -7,13 +7,12 @@ export function gameTitle(game: string | null | undefined, compact = false): str
 }
 
 export function mapTitle(map: string | null | undefined): string {
-    return (
-        [...T5_ZOMBIE_MAPS, ...T6_ZOMBIE_MAPS].find(
-            (entry) => entry.canonical === map?.toLowerCase()
-        )?.friendly ??
-        map ??
-        '—'
+    const matches = [...T5_ZOMBIE_MAPS, ...T6_ZOMBIE_MAPS].filter(
+        (entry) => entry.canonical === map?.toLowerCase()
     );
+    // Engine identifiers alone cannot distinguish selections such as Town and TranZit.
+    if (matches.length > 1) return `${map} (variant unknown)`;
+    return matches[0]?.friendly ?? map ?? '—';
 }
 
 export function serverTitle(name: string): string {