feat: CLI 入口和 init 命令

src/commands/init.ts

@@ -0,0 +1,39 @@
+import { existsSync } from "node:fs";
+import { mkdir, writeFile } from "node:fs/promises";
+import { join } from "node:path";
+import { stringify as stringifyYaml } from "yaml";
+import { defaultConfig } from "../defaults/config.ts";
+import { CHANGES_DIR, ARCHIVE_DIR, RUNE_DIR, CONFIG_FILE } from "../types.ts";
+import { injectOpenCode } from "../adapters/opencode.ts";
+import { injectClaudeCode } from "../adapters/claude-code.ts";
+
+const SUPPORTED_TOOLS: Record<string, (root: string) => Promise<void>> = {
+  opencode: injectOpenCode,
+  "claude-code": injectClaudeCode,
+};
+
+export async function runInit(
+  projectRoot: string,
+  tools: string[],
+): Promise<void> {
+  for (const tool of tools) {
+    if (!SUPPORTED_TOOLS[tool]) {
+      throw new Error(`不支持的工具: ${tool}`);
+    }
+  }
+
+  const runeDir = join(projectRoot, RUNE_DIR);
+  await mkdir(runeDir, { recursive: true });
+  await mkdir(join(runeDir, CHANGES_DIR), { recursive: true });
+  await mkdir(join(runeDir, ARCHIVE_DIR), { recursive: true });
+
+  const configPath = join(runeDir, CONFIG_FILE);
+  if (!existsSync(configPath)) {
+    const yaml = stringifyYaml(defaultConfig);
+    await writeFile(configPath, yaml, "utf-8");
+  }
+
+  for (const tool of tools) {
+    await SUPPORTED_TOOLS[tool](projectRoot);
+  }
+}