Add condition badges for boss Pokemon mechanics

Show colored pill badges (Mega, G-Max, D-Max, Tera) on boss Pokemon
in BossDefeatModal and BossTeamPreview. Starter-dependent condition
labels are ignored. Follows EncounterMethodBadge pattern.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/components/BossDefeatModal.tsx

@@ -1,5 +1,6 @@
 import { type FormEvent, useState, useMemo } from 'react'
 import type { BossBattle, CreateBossResultInput } from '../types/game'
+import { ConditionBadge } from './ConditionBadge'
 
 interface BossDefeatModalProps {
   boss: BossBattle
@@ -108,6 +109,7 @@ export function BossDefeatModal({
                     <span className="text-xs font-medium text-gray-700 dark:text-gray-300">
                       Lv.{bp.level}
                     </span>
+                    <ConditionBadge condition={bp.conditionLabel} size="xs" />
                   </div>
                 ))}
             </div>