feat: 接入 gpui-kit 全部 38 个官方主题预设 + 按语言拆分 locales + 0.7.3 升级

主题预设（"我全都要"）：
- gpui-app/themes/ 内嵌官方捆绑 21 个文件 36 变体 + Default Light/Dark
- theme.rs：register_bundled_themes（bootstrap 注册）/ apply_theme_preset
  （Theme::update + apply_config 整包应用）/ theme_preset_names
- settings.theme_preset 字段（serde 默认 linear）；保存/启动按预设分派，
  外观模式与跟随系统监听仅对 Linear 生效（预设自带明暗不被冲掉）
- 设置页「主题预设」下拉（Linear + 38 注册名），切换即时生效

语言包按语言分文件（用户要求）：
- locales/ui.yml → locales/en.yml + locales/zh-CN.yml
  （rust-i18n 文件名 stem 即 locale，扁平 "ns.key": "value"）
- i18n.rs 测试改为双文件键集合一致性 + 占位符强制

修复：设置对话框打开即栈溢出
- gpui-kit 0.7.0→0.7.3 无法解决；根因是 Windows 主线程 8MB 栈对
  Dialog 覆盖层内 Select 渲染的深调用链不足，注册多主题后越过阈值
  （64MB 试验栈下不复现，证实深调用链而非无限递归）
- .cargo/config.toml：Windows 主线程栈 8MB→64MB
- 注册时机移到 bootstrap（main 的 init_themes，gpui_kit::init 后、
  窗口创建前），对齐官方 story 示例的注册姿势
- 误伤修复：gpui-app/Cargo.toml 被批量编辑误删 bin.name 与
  build-dependencies 段；examples/flood.rs 误删已恢复

官方 skill 同步：npx skills add 被墙，gh-proxy 镜像克隆后手动覆盖
~/.agents/skills 与 ~/.zcode/skills 的 gpui-kit + gpui-kit-design-guides。

gpui-app/themes/alduin.json

@@ -0,0 +1,148 @@
+{
+  "$schema": "https://github.com/longbridge/gpui-kit/raw/refs/heads/main/.theme-schema.json",
+  "name": "Alduin",
+  "author": "AlessandroYorba",
+  "url": "https://github.com/AlessandroYorba/Alduin",
+  "themes": [
+    {
+      "name": "Alduin",
+      "mode": "dark",
+      "colors": {
+        "accent.background": "#2e2b29",
+        "accent.foreground": "#ebdbb2",
+        "background": "#1C1C1C",
+        "border": "#3a3a3a",
+        "danger.background": "#cc241d",
+        "danger.active.background": "#cc241d",
+        "danger.hover.background": "#fb4934",
+        "foreground": "#9E9E9E",
+        "input.border": "#504945",
+        "link.active.foreground": "#83a598",
+        "link.foreground": "#83a598",
+        "link.hover.foreground": "#83a598",
+        "list.active.background": "#262626",
+        "list.active.border": "#9E9E9E",
+        "list.even.background": "#262626",
+        "list.head.background": "#1C1C1C",
+        "muted.background": "#262626",
+        "muted.foreground": "#878787",
+        "panel.background": "#282828",
+        "primary.active.background": "#45858899",
+        "primary.background": "#458588",
+        "primary.foreground": "#F0F0F0",
+        "primary.hover.background": "#458588AA",
+        "scrollbar.background": "#28282800",
+        "scrollbar.thumb.background": "#504945",
+        "secondary.background": "#282828",
+        "secondary.active.background": "#35322f",
+        "secondary.foreground": "#9E9E9E",
+        "secondary.hover.background": "#36323099",
+        "tab.active.background": "#1C1C1C",
+        "tab.active.foreground": "#ebdbb2",
+        "tab.background": "#14141400",
+        "tab.foreground": "#848382",
+        "table.row.border": "#50494570",
+        "title_bar.background": "#262626",
+        "title_bar.border": "#3a3a3a",
+        "ring": "#9E9E9E",
+        "base.blue": "#87afaf",
+        "base.cyan": "#878787",
+        "base.green": "#7a875f",
+        "base.magenta": "#af8787",
+        "base.magenta.light": "#af878788",
+        "base.red": "#8b5f61",
+        "base.yellow": "#9d906c"
+      },
+      "highlight": {
+        "editor.foreground": "#DDDDDD",
+        "editor.background": "#000000",
+        "editor.active_line.background": "#131313",
+        "editor.line_number": "#8F8F8F",
+        "editor.active_line_number": "#DDDDDD",
+        "editor.invisible": "#9E9E9E66",
+        "conflict": "#8b5f61",
+        "created": "#87afaf",
+        "error": "#8b5f61",
+        "hidden": "#9E9E9E",
+        "hint": "#af8787",
+        "info": "#878787",
+        "modified": "#B0A878",
+        "predictive": "#5D5945",
+        "syntax": {
+          "attribute": {
+            "color": "#be9a52"
+          },
+          "boolean": {
+            "color": "#E1D797"
+          },
+          "comment": {
+            "color": "#9E9E9E"
+          },
+          "comment.doc": {
+            "color": "#9E9E9E"
+          },
+          "constant": {
+            "color": "#E1D797"
+          },
+          "constructor": {
+            "color": "#b5af9a"
+          },
+          "embedded": {
+            "color": "#CACCCA"
+          },
+          "function": {
+            "color": "#E1D797"
+          },
+          "keyword": {
+            "color": "#E19773"
+          },
+          "link_text": {
+            "color": "#A86D3B",
+            "font_style": "normal"
+          },
+          "link_uri": {
+            "color": "#6F6D66",
+            "font_style": "italic"
+          },
+          "number": {
+            "color": "#E19773"
+          },
+          "string": {
+            "color": "#76BA53"
+          },
+          "string.escape": {
+            "color": "#76BA53"
+          },
+          "string.regex": {
+            "color": "#76BA53"
+          },
+          "string.special": {
+            "color": "#E1D797"
+          },
+          "string.special.symbol": {
+            "color": "#E1D797"
+          },
+          "tag": {
+            "color": "#b5af9a"
+          },
+          "text.literal": {
+            "color": "#E1D797"
+          },
+          "title": {
+            "color": "#A76D3B",
+            "font_weight": 600
+          },
+          "type": {
+            "color": "#A86D3B"
+          },
+          "property": {
+            "color": "#CACCCA"
+          },
+          "variable.special": {
+            "color": "#E19773"
+          }
+        }
+      }
+    }
+  ]
+}