feat: Phase1 核心——模型/状态机 + SQLite Store(守卫+审批闸) + REST/WS API + daemon

- src/model: 复杂度分级、16 状态状态机、实体类型
- src/store: better-sqlite3 接 schema，transition 受 canTransition 守卫，
  decide 审批闸(reject 必带改进意见)，事件订阅广播，nextExecutable
- src/api: Fastify REST + ws 事件广播(/ws)
- src/daemon: maestrod 入口(env 配置，默认 ~/.maestro :4517)
- test: 9 个生命周期单测全过；typecheck/build 干净；REST+WS 端到端实跑验证

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/daemon/config.ts

@@ -0,0 +1,22 @@
+import { homedir } from 'node:os';
+import { join } from 'node:path';
+import { mkdirSync } from 'node:fs';
+
+export interface DaemonConfig {
+  dataDir: string;     // 数据库 + run 转录日志所在目录
+  dbFile: string;
+  host: string;
+  port: number;
+}
+
+/** 解析配置：环境变量覆盖默认值。首次访问时确保数据目录存在。 */
+export function loadConfig(): DaemonConfig {
+  const dataDir = process.env.MAESTRO_DATA_DIR ?? join(homedir(), '.maestro');
+  mkdirSync(dataDir, { recursive: true });
+  return {
+    dataDir,
+    dbFile: join(dataDir, 'maestro.sqlite'),
+    host: process.env.MAESTRO_HOST ?? '127.0.0.1',
+    port: Number(process.env.MAESTRO_PORT ?? 4517),
+  };
+}

src/daemon/index.ts

@@ -0,0 +1,29 @@
+import { Store } from '../store/index.js';
+import { buildServer, attachWebSocket } from '../api/server.js';
+import { loadConfig } from './config.js';
+
+/** maestrod：核心 daemon。Phase 1 = Store + REST/WS API（手动驱动；编排器在 Phase 2 接入）。 */
+async function main(): Promise<void> {
+  const cfg = loadConfig();
+  const store = new Store(cfg.dbFile);
+  const app = buildServer({ store, logger: true });
+
+  attachWebSocket(app, store);
+
+  await app.listen({ host: cfg.host, port: cfg.port });
+  app.log.info(`maestrod 就绪 · db=${cfg.dbFile} · http://${cfg.host}:${cfg.port} · ws ${cfg.host}:${cfg.port}/ws`);
+
+  const shutdown = async (): Promise<void> => {
+    app.log.info('收到退出信号，关闭中…');
+    await app.close();
+    store.close();
+    process.exit(0);
+  };
+  process.on('SIGINT', shutdown);
+  process.on('SIGTERM', shutdown);
+}
+
+main().catch((err) => {
+  console.error('maestrod 启动失败:', err);
+  process.exit(1);
+});