fix: TypeScript build errors in RunEncounters.tsx

Use explicit BossResult type instead of indexing potentially undefined
typeof bossResults. Add BossResultTeamMember type to tm parameter.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/pages/RunEncounters.tsx

@@ -34,6 +34,8 @@ import type {
   CreateEncounterInput,
   BossBattle,
   BossPokemon,
+  BossResult,
+  BossResultTeamMember,
 } from '../types'
 
 type TeamSortKey = 'route' | 'level' | 'species' | 'dex'
@@ -690,7 +692,7 @@ export function RunEncounters() {
 
   // Map boss battle ID to result for team snapshot
   const bossResultByBattleId = useMemo(() => {
-    const map = new Map<number, (typeof bossResults)[number]>()
+    const map = new Map<number, BossResult>()
     if (bossResults) {
       for (const r of bossResults) {
         map.set(r.bossBattleId, r)
@@ -1598,7 +1600,7 @@ export function RunEncounters() {
                               <div className="mt-3 pt-3 border-t border-border-default">
                                 <p className="text-xs font-medium text-text-secondary mb-2">Your Team</p>
                                 <div className="flex gap-2 flex-wrap">
-                                  {result.team.map((tm) => {
+                                  {result.team.map((tm: BossResultTeamMember) => {
                                     const enc = encounterById.get(tm.encounterId)
                                     if (!enc) return null
                                     const dp = enc.currentPokemon ?? enc.pokemon