refactor: create 从 SDD 阶段降级为工具命令，移除阶段配置和提示词

src/adapters/claude-code.ts

@@ -36,6 +36,22 @@ export async function injectClaudeCode(
     }
   }
 
+  // create 是工具命令，不是 SDD 阶段，但仍需生成对应的 command 文件
+  {
+    const stage = "create";
+    const cmd = `${command} ${stage} <变更名>`;
+    const smartGuide = `\n${buildSmartGuide(command)}\n`;
+    const commandDir = join(projectRoot, COMMANDS_DIR);
+    await mkdir(commandDir, { recursive: true });
+    const commandPath = join(commandDir, `rune-${stage}.md`);
+    if (!existsSync(commandPath)) {
+      await writeFile(
+        commandPath,
+        `执行以下命令，将输出作为当前阶段的工作指引：\n\`\`\`bash\n${cmd}\n\`\`\`${smartGuide}\n`,
+      );
+    }
+  }
+
   const introCommandPath = join(projectRoot, COMMANDS_DIR, "rune-intro.md");
   if (!existsSync(introCommandPath)) {
     await mkdir(join(projectRoot, COMMANDS_DIR), { recursive: true });
@@ -59,6 +75,18 @@ export async function updateClaudeCode(
     await writeIfChanged(commandPath, newContent);
   }
 
+  // create 是工具命令，不是 SDD 阶段，但仍需生成对应的 command 文件
+  {
+    const stage = "create";
+    const cmd = `${command} ${stage} <变更名>`;
+    const smartGuide = `\n${buildSmartGuide(command)}\n`;
+    const commandDir = join(projectRoot, COMMANDS_DIR);
+    await mkdir(commandDir, { recursive: true });
+    const commandPath = join(commandDir, `rune-${stage}.md`);
+    const newContent = `执行以下命令，将输出作为当前阶段的工作指引：\n\`\`\`bash\n${cmd}\n\`\`\`${smartGuide}\n`;
+    await writeIfChanged(commandPath, newContent);
+  }
+
   const introCommandPath = join(projectRoot, COMMANDS_DIR, "rune-intro.md");
   await writeIfChanged(introCommandPath, generateIntroCommand(command));
 }
@@ -66,11 +94,11 @@ export async function updateClaudeCode(
 function generateIntroCommand(command: string): string {
   return `Rune 是基于规格驱动开发（SDD）的 AI 开发辅助工具。SDD 工作流程：
 
-discuss → create → plan → build → archive
+discuss → plan → build → archive
 
 可用命令：
 - /rune-discuss — 自由讨论需求和方案
-- /rune-create — 创建变更目录
+- /rune-create — 创建变更目录（辅助命令，plan 阶段的前置步骤）
 - /rune-plan — 生成设计文档和任务清单
 - /rune-build — 按任务清单逐步实现
 - /rune-archive — 归档已完成的变更