Add Maicheng pursuit scenario

README.md

@@ -4,7 +4,7 @@ Godot 4 tactical RPG prototype inspired by classic turn-based Romance of the Thr
 
 ## Current Slice
 
-- Forty-six campaign scenarios.
+- Forty-seven campaign scenarios.
 - Grid movement.
 - Unit selection.
 - Move, attack, wait, end turn.
@@ -67,6 +67,7 @@ Godot 4 tactical RPG prototype inspired by classic turn-based Romance of the Thr
 - Ruxu Crossing consumes the Ruxu River Line branch flags and turns Ruxu toward an eastern crossing base or Fancheng relief.
 - Fancheng Relief consumes the Ruxu Crossing branch flags and uses a protected Fancheng messenger defense objective.
 - Jingzhou Supply Line consumes the Fancheng Relief branch flags and cuts Guan Yu's supply road after the siege break.
+- Maicheng Pursuit consumes the Jingzhou Supply Line branch flags and seals Guan Yu's retreat road toward Maicheng.
 - Post-battle choices can save campaign flags that branch later briefing text, shop stock, and scenario events.
 - Scenario post-battle dialogue can play before the victory result panel.
 - Basic battle EXP, level-ups, and core first-tier class promotion routes.