test: 测试矩阵扩至 161 项（深度审计 + 5 处缺陷修复）

新增测试矩阵（12 文件 / 161 cases）：
- rng 12 / data 18 / pcgen+cultivation 20 / economy 12 / combat+missions 24
- marriage+diplomacy 13 / events 12 / world+lifecycle 8（含镜像一致）/ save 4+5 / audit 8

审计带出并修复的真实缺陷：
1. Rng.pick 空数组未报错（防空白数组进而崩溃难查）
2. combatPowerOf 未应用功法悟道品阶战力加成（0.1.2 设计缺口）
3. 重伤者即使不代表伤状态仍按满速修炼（health 进修炼公式）
4. 寡妇/鳏夫无法再婚：候选列表放着人执行层却拒婚（spouseId 死旧契约）
5. isWidowed 参数契约陷阱：传 id 静默 false（升级接受 Character|Id 双签名）

src/renderer/game/core/rng.ts

@@ -52,6 +52,7 @@ export class Rng {
   }
 
   pick<T>(arr: T[]): T {
+    if (arr.length === 0) throw new Error('Rng.pick: 空数组无可选项')
     return arr[this.int(0, arr.length - 1)]
   }
 
@@ -61,6 +62,7 @@ export class Rng {
 
   shuffle<T>(arr: T[]): T[] {
     const a = [...arr]
+    if (a.length <= 1) return a
     for (let i = a.length - 1; i > 0; i--) {
       const j = this.int(0, i)
       const t = a[i]

src/renderer/game/engine/systems/combat.ts

@@ -13,7 +13,8 @@ export function combatPowerOf(w: World, c: Character): number {
   const base = basePower(c.realm)
   const stat = 1 + (c.perception + c.physique) / 32
   const tech = techniqueById(c.techniqueId)
-  const techBonus = tech ? 1 + tech.powerBonus : 1
+  const wuRank = (c.techniqueRank ?? 0) > 1 ? 0.2 : (c.techniqueRank ?? 0) === 1 ? 0.08 : 0
+  const techBonus = tech ? 1 + tech.powerBonus + wuRank : 1
   const equip = c.equipment ? 1 + (ARTIFACT_POWER[c.equipment] ?? 0) : 1
   const trait = 1 + traitBonuses(c).windBonus
   const health = 0.5 + 0.5 * (c.health / 100)

src/renderer/game/engine/systems/cultivation.ts

@@ -36,6 +36,11 @@ export function monthlyRate(w: World, c: Character): number {
   } else if (c.state === 'wounded') {
     rate *= c.health > 40 ? 0.5 : 0.15
   }
+  // 带伤不愈者难以静修（与状态无关的直观削率）
+  if (c.alive && c.state !== 'wounded') {
+    if (c.health <= 40) rate *= 0.45
+    else if (c.health <= 70) rate *= 0.8
+  }
   if (w.ageOf(c) < 8) rate *= 0.4
   if (w.ageOf(c) > 55) rate *= 0.7
   rate *= masteryRateOfMajor(c.realm.major)

src/renderer/game/engine/systems/diplomacy.ts

@@ -62,7 +62,7 @@ export function marryNpcFamily(w: World, npcId: string): boolean {
   const eligible = w
     .aliveMembers()
     .filter((c) => w.ageOf(c) >= 16 && w.ageOf(c) <= 46 && c.state !== 'expedition')
-    .filter((c) => !c.spouseId)
+    .filter((c) => !c.spouseId || w.isWidowed(c))
   if (eligible.length === 0) return false
   const npcDef = npcById(npcId)
   const candidate = w.rng.pick(eligible)
@@ -79,7 +79,9 @@ export function marryNpcFamily(w: World, npcId: string): boolean {
 export function arrangeWedding(w: World, aId: string, bId: string): boolean {
   const a = w.memberById(aId)
   const b = w.memberById(bId)
-  if (!a.alive || !b.alive || a.spouseId || b.spouseId) return false
+  if (!a.alive || !b.alive) return false
+  if (a.spouseId && !w.isWidowed(a)) return false
+  if (b.spouseId && !w.isWidowed(b)) return false
   if (a.gender === b.gender) return false
   if (a.fatherId === b.fatherId && a.fatherId) return false
   if (a.motherId === b.motherId && a.motherId) return false

src/renderer/game/engine/world.ts

@@ -414,9 +414,10 @@ export class World {
     return true
   }
 
-  isWidowed(member: Character): boolean {
-    if (!member.spouseId) return false
-    const sp = this.state.members[member.spouseId]
+  isWidowed(member: Character | Id): boolean {
+    const m = typeof member === 'string' ? this.state.members[member] : member
+    if (!m || !m.spouseId) return false
+    const sp = this.state.members[m.spouseId]
     return !!sp && !sp.alive
   }
 
@@ -461,10 +462,18 @@ function w2age(w: World, c: Character): number {
   return w.ageOf(c)
 }
 
+function widowedOf(w: World, m: Character): boolean {
+  if (!m.spouseId) return false
+  const sp = w.state.members[m.spouseId]
+  return !!sp && !sp.alive
+}
+
 function arrangeWeddingPublic(w: World, aId: Id, bId: Id): boolean {
   const a = w.memberById(aId)
   const b = w.memberById(bId)
-  if (!a.alive || !b.alive || a.spouseId || b.spouseId) return false
+  if (!a.alive || !b.alive) return false
+  if (a.spouseId && !widowedOf(w, a)) return false
+  if (b.spouseId && !widowedOf(w, b)) return false
   if (a.gender === b.gender) return false
   if (a.fatherId && a.fatherId === b.fatherId) return false
   if (a.motherId && a.motherId === b.motherId) return false