Add Luo Castle main gate chapter

docs/roadmap.md

@@ -52,15 +52,16 @@ Build a small complete tactical RPG loop that can grow into a longer Romance of
 - Twenty-eighth battle Fu Pass entry route, putting Pang Tong into the sortie choice across a 56x38 fortified mountain pass and recruiting Fa Zheng after Gao Pei withdraws
 - Twenty-ninth battle Luo Castle outer wall route, putting Fa Zheng into the sortie choice across a 58x40 outer-wall battlefield and recruiting Wu Yi after Zhang Ren withdraws
 - Thirtieth battle Luofeng Slope ambush route, using Wu Yi's first sortie choice and Pang Tong survival pressure across a 60x42 ambush battlefield
+- Thirty-first battle Luo Castle main-gate route, turning the siege into a 62x44 castle assault with Zhang Ren's final defense and Yan Yan recruitment after the gate opens
 - Camp progress timeline tab that summarizes Liu Bei's long campaign arc, completed battles, current chapter, latest battle, and next major chapter
 - Tactical sortie preparation panel with battle-specific sortie limits, recommended officers with reasons, class role, named equipment, core stats, bond partner, next-map terrain suitability, deployment preview, formation roles, active bond count, recruited-officer count, reserve roster summary, and readiness advice for each deployable officer
 - Officer collection support in camp, including full roster status, selected/reserve/recommended markers, and post-battle reserve training growth for benched officers
 - Treasure equipment effects wired into battle previews and resolution, including named weapon damage bonuses, defensive treasure mitigation, support recovery bonuses, turn-start charm recovery, and equipment-specific growth bonuses
-- Flow verification script from title through the thirtieth battle victory, recruit sortie selection, Liu Biao visit rewards, Zhuge Liang recruitment, Bowang/Changban/Jiangdong/Red Cliffs/Jing Province/Guiyang/Wuling/Changsha/Yi Province/Fu Pass/Luo Castle/Luofeng camp states, campaign timeline state, and camp save state
+- Flow verification script from title through the thirty-first battle victory, recruit sortie selection, Liu Biao visit rewards, Zhuge Liang recruitment, Bowang/Changban/Jiangdong/Red Cliffs/Jing Province/Guiyang/Wuling/Changsha/Yi Province/Fu Pass/Luo Castle/Luofeng/Luo main gate camp states, campaign timeline state, and camp save state
 
 ## Next Steps
 
-1. Continue the Yi Province arc into Luo Castle proper, with Pang Tong/Fa Zheng/Wu Yi planning pressure and a stronger mix of siege, persuasion, and officer-selection tradeoffs
+1. Continue the Yi Province arc into Chengdu pressure and final Yi Province persuasion, using Yan Yan's veteran perspective plus Pang Tong/Fa Zheng/Wu Yi planning pressure
 2. Add more recruitable officers as the campaign moves deeper through Yi Province and toward Shu Han
 3. Expand reserve training into explicit drill choices, class practice, and bond-focused camp assignments
 4. Add a dedicated treasure/equipment management view so players can compare special effects and growth