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/store/mappers.ts

@@ -0,0 +1,71 @@
+import type { Project, Task, ApprovalRecord, Run, Event, TaskResult, Autonomy } from '../model/types.js';
+import type { Complexity } from '../model/complexity.js';
+import type { TaskStatus, GateKind } from '../model/status.js';
+import type { RunKind, RunStatus, EventType } from '../model/types.js';
+
+/** SQLite 行类型（snake_case，文本/数字原样） */
+export interface ProjectRow {
+  id: string; name: string; repo_path: string; default_branch: string;
+  verify_cmd: string | null; autonomy: string; model: string | null;
+  concurrency: number; status: string; created_at: string;
+}
+export interface TaskRow {
+  id: string; project_id: string; parent_id: string | null; depth: number;
+  title: string; complexity: string; status: string; priority: number;
+  deps: string; plan: string | null; spec: string | null; operations: string | null;
+  result: string | null; assignee: string | null; created_at: string; updated_at: string;
+}
+export interface ApprovalRow {
+  id: string; task_id: string; gate: string; action: string;
+  actor: string; reason: string | null; at: string;
+}
+export interface RunRow {
+  id: string; task_id: string; kind: string; worktree: string | null; branch: string | null;
+  status: string; started_at: string; ended_at: string | null;
+  transcript_ref: string | null; claude_session_id: string | null; error: string | null;
+}
+export interface EventRow {
+  id: string; project_id: string; task_id: string | null; type: string; payload: string; at: string;
+}
+
+export function rowToProject(r: ProjectRow): Project {
+  return {
+    id: r.id, name: r.name, repoPath: r.repo_path, defaultBranch: r.default_branch,
+    verifyCmd: r.verify_cmd, autonomy: r.autonomy as Autonomy, model: r.model,
+    concurrency: r.concurrency, status: r.status as Project['status'], createdAt: r.created_at,
+  };
+}
+
+export function rowToTask(r: TaskRow, approvals: ApprovalRecord[] = []): Task {
+  return {
+    id: r.id, projectId: r.project_id, parentId: r.parent_id, depth: r.depth,
+    title: r.title, complexity: r.complexity as Complexity, status: r.status as TaskStatus,
+    priority: r.priority, deps: JSON.parse(r.deps) as string[],
+    plan: r.plan, spec: r.spec, operations: r.operations,
+    approvals, result: r.result ? (JSON.parse(r.result) as TaskResult) : null,
+    assignee: r.assignee as Task['assignee'], createdAt: r.created_at, updatedAt: r.updated_at,
+  };
+}
+
+export function rowToApproval(r: ApprovalRow): ApprovalRecord {
+  return {
+    gate: r.gate as GateKind, action: r.action as ApprovalRecord['action'],
+    actor: r.actor, reason: r.reason, at: r.at,
+  };
+}
+
+export function rowToRun(r: RunRow): Run {
+  return {
+    id: r.id, taskId: r.task_id, kind: r.kind as RunKind,
+    worktree: r.worktree, branch: r.branch, status: r.status as RunStatus,
+    startedAt: r.started_at, endedAt: r.ended_at,
+    transcriptRef: r.transcript_ref, claudeSessionId: r.claude_session_id, error: r.error,
+  };
+}
+
+export function rowToEvent(r: EventRow): Event {
+  return {
+    id: r.id, projectId: r.project_id, taskId: r.task_id,
+    type: r.type as EventType, payload: JSON.parse(r.payload) as Record<string, unknown>, at: r.at,
+  };
+}