feat(games): add cloud-empress game package

Transcribe the six core-rulebook chapters into rules/, with every
rollable table extracted into tables/ so the CSVs are the single
source of truth: 21 tables plus the four starting kits under
characters/. Chapters keep only non-dice reference charts and the
age table.

Add eight commands: background, loadout, character, sigil, spell,
mishap, panic, and test (d100 under-roll with advantage and
disadvantage, including the doubles-as-extremes rule).

weather and encounters are package-authored stand-ins for the
setting-book tables; sparks and complication-themes are original.

games/cloud-empress/tables/encounters.csv

@@ -0,0 +1,11 @@
+min,max,text,tags
+1,1,"云裔士兵小队（2d10 人；战斗开始 60 分钟后另有 2d10 人增援）。本能 35，护甲值 2，创伤上限 3。",human;patrol
+2,2,"云裔军官率领的巡逻队（小队超过 5 人时必有一名军官；1d10：1-5 经验丰富 本能 60，6-10 缺乏经验 本能 20；护甲值 5，创伤上限 3）。",human;officer
+3,3,"农裔民兵——他们不想打，但被逼无奈。本能 42，护甲值 2，创伤上限 3。",human;militia
+4,4,"幼体巨蝉，正在啃食一具新尸。本能 45，护甲值 3，创伤上限 3；每次受创时投 1d10，掷出 7 或更高则召来一只成年巨蝉。",creature;broodling
+5,5,"成年巨蝉，搜寻白垩。本能 44，护甲值 7，创伤上限 5；角撞 2d10 近处，心灵传动 1d10 远距离。",creature;adult
+6,6,"驮鸽群——可能是野生的，也可能有主人。",beast;dove
+7,7,"水熊虫，从滑界漂来。创伤上限 2。",slip;beast
+8,8,"徘徊灵，被你携带的某件遗物吸引。只有 1 点创伤，只受白垩、纹章、法术与古物的伤害。",slip;ghost
+9,9,"换躯者，正在为下一具躯体物色人选。",human;shifter
+10,10,"远古巨蝉。本能 64，护甲值 15，创伤上限 12；遭遇时附近所有人类必须进行一次恐慌检定。",creature;ancient