Add Xuzhou breakout chapter

docs/roadmap.md

@@ -29,12 +29,13 @@ Build a small complete tactical RPG loop that can grow into a longer Romance of
 - Xu Province camp recruitment for Jian Yong and Mi Zhu, including new strategist/quartermaster roles, bond dialogue, and selectable sortie participation
 - Eighth battle Xiaopei supply-road defense, where the expanded Xu Province roster can be selected into battle and Lu Bu's refuge arc is foreshadowed
 - Ninth battle Xuzhou gate night raid, opening Lu Bu's refuge and the internal instability that leads toward the loss of Xu Province
+- Tenth battle Xuzhou breakout, covering Zhang Fei's mistake, the loss of Xu Province to Lu Bu, and the retreat toward Cao Cao's shadow
 - Tactical sortie preparation panel with class role, named equipment, core stats, bond partner, and next-map terrain suitability for each deployable officer
-- Flow verification script from title through the ninth battle victory, recruit sortie selection, and camp save state
+- Flow verification script from title through the tenth battle victory, recruit sortie selection, and camp save state
 
 ## Next Steps
 
-1. Continue into Zhang Fei's mistake and the full loss of Xu Province to Lu Bu
+1. Continue into Liu Bei's temporary service under Cao Cao and the tension of surviving in Xu/Hu Du politics
 2. Add a chapter/progress view so long campaign arcs are easier to read between battles
 3. Apply treasure equipment effects to damage, defense, recovery, and command rules
 4. Add more recruitable officers as the campaign moves toward Cao Cao, Yuan Shao, Liu Biao, and Zhuge Liang