Five new rooms: prison, graveyard, guard post, arena, sacrifice altar; new creature: the revenant

- prison: captured heroes sit in cells apart from the torture chamber, do not defect and starve in time; the hand can move prisoners between cells and torture
- graveyard: the fallen are buried there; after a while some rise as revenants (undead: no food, no sleep, life drain from level 5)
- guard post: creatures hold the position and attack whatever comes into view
- arena: creatures spar in pairs for fast, free experience, at the cost of bruises
- sacrifice altar: creatures dropped on it are sacrificed; certain pairs bring a rare creature, otherwise a blessing (mood and mana)
- researched in the library, campaign unlocks, textures, furniture, texts EN/DE, bestiary

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

src/personality.rs

@@ -27,6 +27,7 @@ pub fn persona(k: EK) -> Persona {
         EK::Owl => p(Kind::Library, &[EK::Gargoyle], Some((5, "volley"))),
         EK::Wyrm => p(Kind::Treasury, &[EK::Bat], Some((7, "inferno"))),
         EK::Cogling => p(Kind::Forge, &[EK::Ogre], Some((4, "bomb"))),
+        EK::Revenant => p(Kind::Graveyard, &[EK::Priestess], Some((5, "drain"))),
         _ => p(Kind::Lair, &[], None),
     }
 }