Make English the repository working language (#5)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

packages/cli/test/chat.test.ts

@@ -2,40 +2,40 @@ import { describe, expect, it } from "vitest";
 import { decideSigint } from "../src/commands/chat.js";
 import { parseApprovalAnswer } from "../src/approval.js";
 
-describe("decideSigint (Ctrl-C 行为状态机)", () => {
-  it("approving → deny（无论缓冲区是否有内容）", () => {
+describe("decideSigint (Ctrl-C behavior state machine)", () => {
+  it("approving -> deny (whether or not the buffer has content)", () => {
     expect(decideSigint("approving", false)).toBe("deny");
     expect(decideSigint("approving", true)).toBe("deny");
   });
 
-  it("running → abort（中断当前 Task，不退出）", () => {
+  it("running -> abort (interrupts the current Task, does not exit)", () => {
     expect(decideSigint("running", false)).toBe("abort");
     expect(decideSigint("running", true)).toBe("abort");
   });
 
-  it("idle + 有输入 → clear（清空缓冲区）", () => {
+  it("idle + input -> clear (empties the buffer)", () => {
     expect(decideSigint("idle", true)).toBe("clear");
   });
 
-  it("idle + 无输入 → confirm-exit（弹出 y/N 退出确认）", () => {
+  it("idle + no input -> confirm-exit (shows the y/N exit confirmation)", () => {
     expect(decideSigint("idle", false)).toBe("confirm-exit");
   });
 
-  it("confirming-exit → exit（确认中再次 Ctrl-C 直接退出）", () => {
+  it("confirming-exit -> exit (a second Ctrl-C during confirmation exits immediately)", () => {
     expect(decideSigint("confirming-exit", false)).toBe("exit");
     expect(decideSigint("confirming-exit", true)).toBe("exit");
   });
 });
 
 describe("parseApprovalAnswer", () => {
-  it("y / yes（trim、不区分大小写）→ allow；n / no → deny", () => {
+  it("y / yes (trimmed, case-insensitive) -> allow; n / no -> deny", () => {
     expect(parseApprovalAnswer("y")).toBe("allow");
     expect(parseApprovalAnswer("  YES \n")).toBe("allow");
     expect(parseApprovalAnswer("Y")).toBe("allow");
     expect(parseApprovalAnswer("n")).toBe("deny");
     expect(parseApprovalAnswer("NO")).toBe("deny");
   });
-  it("空/无关输入用 fallback（缺省 deny；工具审批传 allow）", () => {
+  it("empty/unrelated input uses the fallback (default deny; tool approval passes allow)", () => {
     expect(parseApprovalAnswer("")).toBe("deny"); // default fallback
     expect(parseApprovalAnswer("nope")).toBe("deny");
     expect(parseApprovalAnswer("", "allow")).toBe("allow"); // tool approval defaults to allow