docs(整合): 补充最近5条练习模式相关更新记录

- 2026-03-09: 添加 Ctrl+H 快捷键显示答案
- 2026-03-08: 修正底部固定区域偏移方式
- 2026-03-08: 优化辅助信息显示和布局
- 2026-03-07: 答对后显示ITTO明细信息
- 2026-03-02: 修复练习模式输入框完全无法输入的问题

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src/data/changelog.json

@@ -1,5 +1,40 @@
 {
   "changelogEntries": [
+    {
+      "id": "2026-03-09-practice-keyboard-shortcut",
+      "date": "2026-03-09",
+      "type": "feat",
+      "title": "添加 Ctrl+H 快捷键显示答案",
+      "scope": "练习"
+    },
+    {
+      "id": "2026-03-08-practice-bottom-offset",
+      "date": "2026-03-08",
+      "type": "fix",
+      "title": "修正底部固定区域偏移方式",
+      "scope": "练习"
+    },
+    {
+      "id": "2026-03-08-practice-hint-layout",
+      "date": "2026-03-08",
+      "type": "feat",
+      "title": "优化辅助信息显示和布局",
+      "scope": "练习"
+    },
+    {
+      "id": "2026-03-07-practice-show-detail",
+      "date": "2026-03-07",
+      "type": "feat",
+      "title": "答对后显示ITTO明细信息",
+      "scope": "练习"
+    },
+    {
+      "id": "2026-03-02-fix-practice-input",
+      "date": "2026-03-02",
+      "type": "fix",
+      "title": "修复练习模式输入框完全无法输入的问题",
+      "scope": "过程详情"
+    },
     {
       "id": "2026-03-08-changelog-unified-card",
       "date": "2026-03-08",