feat: implement monthly disaster event

packages/infra/prisma/game.prisma

@@ -131,7 +131,7 @@ model City {
   commerceMax    Int    @map("comm_max")
   security       Int    @map("secu")
   securityMax    Int    @map("secu_max")
-  trust          Int    @default(0)
+  trust          Float  @default(0) @db.Real
   trade          Int?   @default(100)
   defence        Int    @map("def")
   defenceMax     Int    @map("def_max")

packages/infra/prisma/migrations/20260725005000_make_city_trust_real/migration.sql

@@ -0,0 +1,3 @@
+ALTER TABLE "city"
+    ALTER COLUMN "trust" TYPE REAL
+    USING "trust"::REAL;

packages/logic/src/triggers/types.ts

@@ -36,6 +36,7 @@ export type GeneralStatName =
     | 'dedication'
     | 'sabotageDefence'
     | 'sabotageAttack'
+    | 'injuryProb'
     | 'addDex';
 
 export type WarStatName =