Apply selected server maps automatically without config overlays

src/lib/server/fleet/map-aliases.ts

@@ -32,6 +32,11 @@ export const T5_ZOMBIE_MAPS: readonly T5MapEntry[] = Object.freeze([
 const BY_SLUG: ReadonlyMap<string, T5MapEntry> = new Map(
     T5_ZOMBIE_MAPS.map((m) => [m.slug, m])
 );
+// Older folder names used friendly names (shi_no_numa) instead of engine
+// slugs (sumpf). Keep deriving their canonical map from the same catalog.
+const BY_FRIENDLY_SLUG: ReadonlyMap<string, T5MapEntry> = new Map(
+    T5_ZOMBIE_MAPS.map((m) => [m.friendly.toLowerCase().replace(/[^a-z0-9]/g, ''), m])
+);
 
 export function t5ZombieMapBySlug(slug: string): T5MapEntry | undefined {
     return BY_SLUG.get(slug.toLowerCase());
@@ -81,6 +86,6 @@ export function parseServerName(name: string): ParsedServerName | null {
     if (slugParts.length === 0) return null;
 
     const mapSlug = slugParts.join('').toLowerCase();
-    const mapCanonical = BY_SLUG.get(mapSlug)?.canonical ?? null;
+    const mapCanonical = (BY_SLUG.get(mapSlug) ?? BY_FRIENDLY_SLUG.get(mapSlug))?.canonical ?? null;
     return { game, gameMode, mapSlug, mapCanonical, lobby };
 }