Champions of the Order lead every fifth wave: four bosses with abilities, a health bar and loot

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

lang/en.lang

@@ -53,6 +53,12 @@ msg.creature_arrived = A {0} came through the portal.
 msg.payday_partial = Payday! {0} creatures paid ({1} gold), {2} got nothing and are angry!
 msg.payday = Payday! {0} creatures received {1} gold.
 msg.wave_boss = Wave {0}: a Paladin of Light leads {1} heroes into your realm!
+boss.aldric = Sir Aldric the Unbending
+boss.seraphine = Dame Seraphine of the Dawn
+boss.halvard = Brother Halvard the Pious
+boss.rothgar = Captain Rothgar Ironside
+msg.boss_comes = A champion of the Order leads the wave: {0}!
+msg.boss_slain = {0} has fallen! Loot: {1} gold and the plans of a rune forge tower.
 msg.wave = Wave {0}: {1} heroes break through the gate!
 msg.gate_boss = The gate is crumbling! The Gate Warden appears with {0} defenders!
 msg.gate_defenders = The gate summons {0} defenders!