feat(mining): migrate the Windows Defender antivirus-help dialog to reference design

Bring renderAntivirusHelpDialog onto the reference design and remove its hardcoded
English (the last Wave-1 modal):
- struct-form BeginOverlayDialog(OverlayDialogSpec{BlurFloat, cardWidth 560,
  idSuffix antivirus}) replacing the legacy positional overload
- the hardcoded "Windows Defender Blocked Miner" title and all 10 step/intro/bullet
  strings -> TR() (11 new av_* keys + reuse `close`; 8-lang translations, Windows
  env vars / xmrig.exe kept literal, menu names localized)
- 2 StyledButton -> TactileButton, drop the footer divider, dp-scale the button widths
- CJK subset rebuilt (glyphs 1741->1751; kept — new glyphs are used)

NOTE: this dialog is inside #ifdef _WIN32, so the Linux build compiles it out and
cannot verify it — needs a Windows build to compile-check. The edits mirror the
already-verified daemon-update-prompt / migrate-to-seed struct-overlay pattern and
leave the ShellExecuteA call untouched. i18n.cpp + the daemon prompt (cross-platform)
build + ctest + hygiene clean on Linux.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

res/lang/zh.json

@@ -55,6 +55,17 @@
     "amount_label": "金额：",
     "appearance": "外观",
     "auto_shield": "自动屏蔽挖矿",
+    "av_intro": "挖矿软件经常被标记为潜在有害程序。请按照以下步骤启用矿池挖矿：",
+    "av_open_security": "打开 Windows 安全中心",
+    "av_step1": "第 1 步：添加排除项",
+    "av_step1_b1": "打开 Windows 安全中心 > 病毒和威胁防护",
+    "av_step1_b2": "单击 管理设置 > 排除项 > 添加或删除",
+    "av_step1_b3": "添加文件夹：%APPDATA%\\ObsidianDragon\\",
+    "av_step2": "第 2 步：从隔离区还原（如果需要）",
+    "av_step2_b1": "Windows 安全中心 > 保护历史记录",
+    "av_step2_b2": "找到 xmrig.exe 并单击“还原”",
+    "av_step3": "第 3 步：重启钱包并重试",
+    "av_title": "Windows Defender 已阻止矿工程序",
     "available": "可用",
     "backup_backing_up": "正在备份...",
     "backup_create": "创建备份",