Fix multi-circuit events not showing all matching circuit tags

BCP's leagueId query only matches an event's primary league, not
every league in its own `leagues` array, so an event belonging to a
second watched circuit (e.g. Show Me Showdown under both LMC 2027 and
Warhammer Global Rankings 2026) never got tagged with the circuit
whose query never returned it. Cross-reference ev.leagues against
CONFIG.circuits to pick up those additional memberships.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

sites/events/src/main.js

@@ -325,6 +325,23 @@ function mergeEvents(results) {
       byId.get(ev.id).circuits.push(circuit);
     }
   }
+  // BCP's leagueId query only matches an event's single primary/owning
+  // league, not every league in the event's own `leagues` array — so an
+  // event can belong to a second watched circuit whose dedicated fetch
+  // never returns it. Cross-reference ev.leagues against CONFIG.circuits
+  // to pick up those additional memberships (still honoring `near`, since
+  // this bypasses the radius filter applied in load()).
+  for (const { event: ev, circuits } of byId.values()) {
+    const already = new Set(circuits.map(c => c.id));
+    for (const league of ev.leagues || []) {
+      if (already.has(league.id)) continue;
+      const circuit = CONFIG.circuits.find(c => c.id === league.id);
+      if (circuit && withinRadius(ev, circuit.near)) {
+        circuits.push(circuit);
+        already.add(circuit.id);
+      }
+    }
+  }
   return [...byId.values()].sort((a, b) => Date.parse(a.event.eventDate) - Date.parse(b.event.eventDate));
 }