Remove Chinese support and translate documentation to English

.clang-format

@@ -1,5 +1,6 @@
-# TetherKit 代码格式配置
-# 以 Google 风格为基线，放宽行宽到 100 列以容纳协议常量表与长类型名。
+# TetherKit code formatting configuration.
+# Google style as the baseline, with line width relaxed to 100 columns to fit
+# protocol constant tables and long type names.
 ---
 Language: Cpp
 BasedOnStyle: Google
@@ -11,25 +12,25 @@ TabWidth: 2
 UseTab: Never
 AccessModifierOffset: -1
 
-# 指针/引用贴类型：TetherKit 统一写 `Foo* p` 而非 `Foo *p`
+# Pointer/reference hugs the type: TetherKit writes `Foo* p`, not `Foo *p`
 DerivePointerAlignment: false
 PointerAlignment: Left
 ReferenceAlignment: Left
 
-# 大括号：函数与控制流的左括号不换行（Attach）
+# Braces: function and control-flow opening braces stay on the same line (Attach)
 BreakBeforeBraces: Attach
 AllowShortFunctionsOnASingleLine: Inline
 AllowShortIfStatementsOnASingleLine: Never
 AllowShortLoopsOnASingleLine: false
 AllowShortCaseLabelsOnASingleLine: false
 InsertBraces: true
 
-# 构造函数初始化列表每行一个，便于 diff
+# Constructor initializer lists: one base per line to keep diffs readable
 BreakConstructorInitializers: BeforeColon
 ConstructorInitializerAllOnOneLineOrOnePerLine: true
 PackConstructorInitializers: NextLine
 
-# 头文件分组：本项目头 > 第三方 > 系统/平台 > 标准库
+# Include-group order: project headers > third party > system/platform > stdlib
 SortIncludes: CaseSensitive
 IncludeBlocks: Regroup
 IncludeCategories:
@@ -46,7 +47,7 @@ IncludeCategories:
   - Regex: '.*'
     Priority: 5
 
-# 其它
+# Misc
 AlwaysBreakTemplateDeclarations: Yes
 EmptyLineBeforeAccessModifier: LogicalBlock
 FixNamespaceComments: true

.clang-tidy

@@ -1,12 +1,17 @@
-# TetherKit 静态检查配置
+# TetherKit static analysis configuration.
 #
-# 取舍说明：
-#  * 本项目是与内核 ABI / USB 线格式打交道的底层驱动，必然出现大量 reinterpret_cast、
-#    C 风格数组、位运算与魔数常量，因此关掉一批对系统编程不适用的检查。
-#  * 数据路径要求零分配、无虚函数开销，因此保留 performance-* 组，但关掉
-#    performance-enum-size —— 本项目的协议枚举底层类型**必须**精确等于线格式
-#    的字段宽度（RNDIS 全是 LE32），按检查建议缩小会直接写坏线格式。
-#  * 并发正确性是本项目的核心风险，因此保留 concurrency-* 与 bugprone-* 全组。
+# Trade-offs:
+#  * This project is a low-level driver dealing with kernel ABIs and USB wire
+#    formats, so reinterpret_cast, C-style arrays, bit manipulation and magic
+#    constants are inevitable; that rules out a batch of checks that do not
+#    suit systems programming.
+#  * The data paths demand zero allocation and no virtual-call overhead, so the
+#    performance-* group stays on -- except performance-enum-size: the
+#    underlying type of a protocol enum **must** exactly match the wire-format
+#    field width (RNDIS is all LE32), and shrinking it as the check suggests
+#    would corrupt the wire format outright.
+#  * Concurrency correctness is the project's core risk, so the concurrency-*
+#    and bugprone-* groups stay on in full.
 ---
 Checks: >
   bugprone-*,
@@ -52,7 +57,8 @@ HeaderFilterRegex: 'tetherkit/.*'
 FormatStyle: file
 
 CheckOptions:
-  # 命名约定（与 docs/DESIGN.md「代码规范」一节一致）
+  # Naming conventions (consistent with the "Code conventions" section of
+  # docs/DESIGN.md)
   - key: readability-identifier-naming.NamespaceCase
     value: lower_case
   - key: readability-identifier-naming.ClassCase
@@ -89,6 +95,7 @@ CheckOptions:
     value: CamelCase
   - key: readability-identifier-naming.MacroDefinitionCase
     value: UPPER_CASE
-  # 数据路径禁止隐式堆分配，放宽 else-after-return 便于早退风格
+  # The data path forbids implicit heap allocation; relaxing else-after-return
+  # keeps the early-return style usable
   - key: readability-else-after-return.WarnOnUnfixable
     value: 'false'

.gitignore

@@ -1,4 +1,4 @@
-# ---- 构建产物 ----
+# ---- build artifacts ----
 build/
 build-*/
 out/
@@ -15,7 +15,7 @@ Testing/
 compile_commands.json
 _deps/
 
-# ---- 编译中间产物 ----
+# ---- compiler intermediates ----
 *.o
 *.a
 *.so
@@ -33,21 +33,21 @@ _deps/
 .Spotlight-V100
 .Trashes
 
-# ---- 编辑器 / IDE ----
+# ---- editors / IDEs ----
 .vscode/
 .idea/
 *.swp
 *.swo
 .cache/
 .clangd/
 
-# ---- GUI 打包产物 ----
+# ---- GUI packaging artifacts ----
 #
-# dist/ 由 gui/Scripts/build-gui.sh 生成（TetherKit.app + helper），
-# 是纯派生物，不进版本库。
+# dist/ is produced by gui/Scripts/build-gui.sh (TetherKit.app + helper).
+# It is a pure derivative and does not belong in version control.
 dist/
 
-# ---- 运行期产物 ----
+# ---- runtime artifacts ----
 *.log
 *.pcap
 /benchmark-results/