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>

src/commands/buddy/BuddyPanel.tsx

@@ -21,6 +21,7 @@ import { getXpProgress } from '@claude-code-best/pokemon';
 
 import { getGenderSymbol } from '@claude-code-best/pokemon';
 import { StatBar, SpriteAnimator, getFallbackSprite, loadSprite } from '@claude-code-best/pokemon';
+import { BattleFlow, loadBuddyData } from '@claude-code-best/pokemon';
 import type { LocalJSXCommandOnDone } from '../../types/command.js';
 
 const CYAN: Color = 'ansi:cyan';
@@ -91,6 +92,13 @@ export function BuddyPanel({ buddyData, spriteLines, onClose }: BuddyPanelProps)
         onClose={() => onClose('buddy panel closed')}
       />
     </Tab>,
+    <Tab key="battle" title="Battle">
+      <BattleTab
+        buddyData={data}
+        isActive={selectedTab === 'Battle'}
+        onUpdate={updateData}
+      />
+    </Tab>,
     <Tab key="egg" title="Egg">
       <EggTab buddyData={data} />
     </Tab>,
@@ -613,6 +621,35 @@ function DexTab({
   );
 }
 
+// ─── Battle Tab ──────────────────────────────────────────
+
+function BattleTab({
+  buddyData,
+  isActive,
+  onUpdate,
+}: {
+  buddyData: BuddyData;
+  isActive: boolean;
+  onUpdate: (data: BuddyData) => void;
+}) {
+  const [battleKey, setBattleKey] = useState(0);
+
+  const handleClose = async () => {
+    const updated = await loadBuddyData();
+    onUpdate(updated);
+    setBattleKey(k => k + 1);
+  };
+
+  return (
+    <BattleFlow
+      key={battleKey}
+      buddyData={buddyData}
+      onClose={handleClose}
+      isActive={isActive}
+    />
+  );
+}
+
 // ─── Egg Tab ──────────────────────────────────────────
 
 function EggTab({ buddyData }: { buddyData: BuddyData }) {