feat: help 新增 create 命令帮助，更新阶段顺序

tests/cli/help.test.ts

@@ -18,6 +18,7 @@ describe("showGlobalHelp", () => {
     const output = showGlobalHelp("rune");
     expect(output).toContain("init <工具...>");
     expect(output).toContain("discuss");
+    expect(output).toContain("create <变更>");
     expect(output).toContain("plan <变更> <文档>");
     expect(output).toContain("build <名称>");
     expect(output).toContain("archive <名称>");
@@ -48,6 +49,13 @@ describe("showCommandHelp", () => {
     expect(output).toContain("opencode");
   });
 
+  it("create 命令包含变更名参数", () => {
+    const output = showCommandHelp("create", "rune");
+    expect(output).toContain("rune create <change-name>");
+    expect(output).toContain("变更名称");
+    expect(output).toContain("rune create add-user-auth");
+  });
+
   it("不存在的命令返回 null", () => {
     const output = showCommandHelp("nonexistent", "rune");
     expect(output).toBeNull();