feat: 集成 Battle tab 到 BuddyPanel，重命名 data/ 为 dex/ 规避 gitignore

- BuddyPanel 新增 Battle tab，BattleFlow 加 isActive 控制
- BattleFlow configSelect 阶段支持 ↑↓ 选择物种
- packages/pokemon/src/data/ → dex/，解决根 .gitignore 匹配问题
- 全量 Tab→2空格 缩进转换

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/pokemon/src/core/gender.ts

@@ -5,22 +5,22 @@ import type { Gender, SpeciesData } from '../types'
  * genderRate: -1 = genderless, 0 = always male, 1-7 = female chance = genderRate/8, 8 = always female
  */
 export function determineGender(speciesData: SpeciesData, seed: number): Gender {
-	if (speciesData.genderRate === -1) return 'genderless'
-	if (speciesData.genderRate === 0) return 'male'
-	if (speciesData.genderRate === 8) return 'female'
-	// Use seed value (0-255) to determine gender
-	const threshold = (speciesData.genderRate / 8) * 256
-	return (seed % 256) < threshold ? 'female' : 'male'
+  if (speciesData.genderRate === -1) return 'genderless'
+  if (speciesData.genderRate === 0) return 'male'
+  if (speciesData.genderRate === 8) return 'female'
+  // Use seed value (0-255) to determine gender
+  const threshold = (speciesData.genderRate / 8) * 256
+  return (seed % 256) < threshold ? 'female' : 'male'
 }
 
 /** Get gender symbol for display */
 export function getGenderSymbol(gender: Gender): string {
-	switch (gender) {
-		case 'male':
-			return '♂'
-		case 'female':
-			return '♀'
-		case 'genderless':
-			return ''
-	}
+  switch (gender) {
+    case 'male':
+      return '♂'
+    case 'female':
+      return '♀'
+    case 'genderless':
+      return ''
+  }
 }