feat: W2 经济核心+数据管线+灰盒 — Balance Bible v1.0 八表逐值落地，EconomyState/sim 14 门/灰盒主场景/单测（GDScript 待本机引擎验证）

data/sheets/meta_upgrades.csv

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+id,name_cn,name_en,effect_type,target_id,effect_param,cost_suihui,max_rank,condition,desc_cn
+meta_01,枕旧梦,Pillow of Old Dreams,start_levels,gen_01_youhun,10,3,1,none,新轮回开局自带游魂 ×10 级
+meta_02,携阴兵,Bring Ghost Soldiers,start_levels,gen_02_yinbing,10,5,1,none,开局自带阴兵 ×10 级
+meta_03,宿慧通透,Perspicacious Wisdom,suihui_gain_pct,,0.15,8,3,none,宿慧获取 +15%（每阶）
+meta_04,天生熟练,Born Skilled,skip_interval,,4,12,1,none,跳过机制从每 5 级加快为每 4 级
+meta_05,阴司人脉,Netherworld Connections,offline_pct,,0.25,6,1,none,离线效率 +25%
+meta_06,斩鬼刃,Ghost-Slaying Blade,boss_click_pct,,0.3,10,1,none,殿王战点击伤害 +30%
+meta_07,心安理得,Easy Conscience,wrath_penalty_set,,0.15,15,1,none,冤气对宿慧的削减 30%→15%
+meta_08,敕封恩典,Grace of Enthronement,global_pct,,0.25,20,2,none,全局 +25%（每阶）
+meta_09,阴阳眼,Yin-Yang Eye,event_freq_pct,,0.2,10,1,none,事件触发频率 +20%
+meta_10,超度加速,Salvation Acceleration,souls_mult,,2,8,1,none,超度计数获取 ×2
+meta_11,老马识途,Old Horse Knows the Way,bulk_unlock,,0,5,1,none,开局即可用批量 ×10
+meta_12,幽冥权柄,Authority of the Netherworld,conditional_global_pct,gen_12_tianzi,0.1,25,1,gen12_unlocked,愿景档（gen12）解锁后全局再 +10%