diff --git a/src/api/server.ts b/src/api/server.ts
index 11fcc71..75d41ac 100644
--- a/src/api/server.ts
+++ b/src/api/server.ts
@@ -101,6 +101,7 @@ export function buildServer(opts: ApiOptions): FastifyInstance {
     if (b.autoApprovePlan !== undefined) patch.autoApprovePlan = Boolean(b.autoApprovePlan);
     if (b.autoApproveExec !== undefined) patch.autoApproveExec = Boolean(b.autoApproveExec);
     if (b.checks !== undefined) patch.checks = b.checks === null || b.checks === '' ? null : String(b.checks);
+    if (b.agentRules !== undefined) patch.agentRules = b.agentRules === null || b.agentRules === '' ? null : String(b.agentRules);
     return projectOut(store.patchProject(id, patch));
   });
 
diff --git a/src/executor/protocol.ts b/src/executor/protocol.ts
index 89f606a..010923b 100644
--- a/src/executor/protocol.ts
+++ b/src/executor/protocol.ts
@@ -21,6 +21,19 @@ function dataDir(): string {
   return process.env.MAESTRO_DATA_DIR ?? join(homedir(), '.maestro');
 }
 
+/**
+ * L4 全局 agent 规范：maestro 自维护的 <data>/agent-global.md（不读用户 ~/.claude/CLAUDE.md，
+ * 避免个人交互习惯与受控执行冲突）。worker 直接读盘注入 prompt（非 DB，不破坏进程模型）。
+ * 文件不存在/空 → null。
+ */
+export function readGlobalAgentRules(): string | null {
+  const p = join(dataDir(), 'agent-global.md');
+  try {
+    const txt = readFileSync(p, 'utf8').trim();
+    return txt || null;
+  } catch { return null; }
+}
+
 /** 全部 run 工作目录根：<data>/runs */
 export function runsBase(): string {
   return join(dataDir(), 'runs');
diff --git a/src/executor/reviewer.ts b/src/executor/reviewer.ts
index 5f09c58..0e515bd 100644
--- a/src/executor/reviewer.ts
+++ b/src/executor/reviewer.ts
@@ -2,6 +2,8 @@ import type { Project, Task, ReviewVerdict, UsageTokens } from '../model/types.j
 import type { WorktreeInfo } from './worktree.js';
 import { runClaude } from './cc.js';
 import { pickModel } from './models.js';
+import { rulesHeaderLines } from './runner.js';
+import { readGlobalAgentRules } from './protocol.js';
 
 /** 复审角色：code（code review）/ security（安全审计）。两者共用 models.ts 的 reviewer 模型映射。 */
 export type ReviewRole = 'code' | 'security';
@@ -73,6 +75,8 @@ export function buildReviewPrompt(
     `# ${rt.title}：${task.title}`,
     `任务 ID：${task.id}`,
     '',
+    // L4+L2：注入全局/项目规范，让复审据此核对执行者是否守规
+    ...rulesHeaderLines(project, readGlobalAgentRules()),
     rt.intro,
     '',
     '## 任务原始要求',
diff --git a/src/executor/runner.ts b/src/executor/runner.ts
index 4310e4d..18feb62 100644
--- a/src/executor/runner.ts
+++ b/src/executor/runner.ts
@@ -2,6 +2,7 @@ import type { Project, Task, UsageTokens } from '../model/types.js';
 import { git, type WorktreeInfo } from './worktree.js';
 import { runClaude } from './cc.js';
 import { pickModel } from './models.js';
+import { readGlobalAgentRules } from './protocol.js';
 
 export { transcriptDir } from './cc.js';
 
@@ -25,6 +26,19 @@ const DEFAULT_MAX_TURNS = 100;
 /** 若项目未配置 timeoutMs 时的全局兜底超时（30min） */
 const DEFAULT_TIMEOUT_MS = 30 * 60_000;
 
+/**
+ * L4+L2 记忆注入：prompt 头部规范段。全局规范（L4，maestro 自维护 agent-global.md）在前，
+ * 项目规范（L2，project.agentRules）在后。两者皆空 → 空数组。
+ */
+export function rulesHeaderLines(project?: Project, globalRules?: string | null): string[] {
+  const out: string[] = [];
+  const g = globalRules?.trim();
+  if (g) out.push('## 全局执行规范（所有任务通用，必须遵守）', g, '');
+  const pr = project?.agentRules?.trim();
+  if (pr) out.push('## 项目规范（本项目专属，必须遵守）', pr, '');
+  return out;
+}
+
 /**
  * L1 记忆注入：若任务带「上次失败原因」（重试任务），生成一段提醒；否则空数组。
  * 由 daemon 在 claimOne 时把 store.lastRunErrorOf 填进 task.lastRunError 下发（见 orchestrator）。
@@ -42,13 +56,14 @@ function lastErrorLines(task: Task): string[] {
   ];
 }
 
-/** 组装任务提示词：标题 + operations/spec 全文 + 上次失败(L1) + 执行约束 */
-export function buildPrompt(task: Task): string {
+/** 组装任务提示词：标题 + 全局/项目规范(L4/L2) + operations/spec 全文 + 上次失败(L1) + 执行约束 */
+export function buildPrompt(task: Task, project?: Project, globalRules?: string | null): string {
   const body = task.operations ?? task.spec ?? task.plan ?? '';
   return [
     `# 任务：${task.title}`,
     `任务 ID：${task.id}`,
     '',
+    ...rulesHeaderLines(project, globalRules),
     '## 任务内容',
     body || '（无详细说明，按标题完成）',
     '',
@@ -81,7 +96,7 @@ export async function runTask(task: Task, project: Project, worktree: WorktreeIn
   const model = pickModel(task, project, 'executor');
   const timeoutMs = project.timeoutMs ?? DEFAULT_TIMEOUT_MS;
   const cc = await runClaude({
-    prompt: buildPrompt(task),
+    prompt: buildPrompt(task, project, readGlobalAgentRules()),
     cwd: worktree.dir,
     model,
     runId,
@@ -133,13 +148,13 @@ export interface PlannerResult {
 export type PlannerFn = (task: Task, project: Project, kind: PlanKind, runId: string) => Promise<PlannerResult>;
 
 /** planner 提示词：只读代码库，spec=写改动方案；decompose=拆子任务并在末尾输出 fenced JSON。 */
-export function buildPlannerPrompt(task: Task, kind: PlanKind): string {
-  const head = [`# 任务：${task.title}`, `任务 ID：${task.id}`];
+export function buildPlannerPrompt(task: Task, kind: PlanKind, project?: Project, globalRules?: string | null): string {
+  const head = [`# 任务：${task.title}`, `任务 ID：${task.id}`, '', ...rulesHeaderLines(project, globalRules)];
   const errLines = lastErrorLines(task);
   if (kind === 'spec') {
-    if (task.spec) head.push('', '## 现有方案草稿（可改进/替换）', task.spec);
+    if (task.spec) head.push('## 现有方案草稿（可改进/替换）', task.spec, '');
     return [
-      ...head, '',
+      ...head,
       ...errLines,
       '## 你的角色：方案作者（只读，不改任何文件）',
       '只读这个代码库，为上述任务写一份「具体改动方案」。不要编辑文件、不要执行有副作用的命令。',
@@ -186,7 +201,7 @@ export async function runPlanner(task: Task, project: Project, kind: PlanKind, r
   const model = pickModel(task, project, 'planner');
   const timeoutMs = project.timeoutMs ?? DEFAULT_TIMEOUT_MS;
   const cc = await runClaude({
-    prompt: buildPlannerPrompt(task, kind),
+    prompt: buildPlannerPrompt(task, kind, project, readGlobalAgentRules()),
     cwd: project.repoPath,                  // 只读跑在主仓（planner 不改文件，无需 worktree）
     model,
     runId,
@@ -199,11 +214,12 @@ export async function runPlanner(task: Task, project: Project, kind: PlanKind, r
 }
 
 /** 解冲突任务的提示词：worker 已在 worktree 内触发 git merge 制造冲突态，CC 负责逐个解决。 */
-export function buildConflictPrompt(task: Task, conflictFiles: string[]): string {
+export function buildConflictPrompt(task: Task, conflictFiles: string[], project?: Project, globalRules?: string | null): string {
   return [
     `# 合并冲突解决：${task.title}`,
     `任务 ID：${task.id}`,
     '',
+    ...rulesHeaderLines(project, globalRules),
     '## 背景',
     '你的工作目录（git worktree）已执行 `git merge` 并产生合并冲突。你的任务是解决全部冲突，保留双方改动的意图，然后提交。',
     '',
@@ -237,7 +253,7 @@ export async function runConflict(
   const model = pickModel(task, project, 'conflict' as import('./models.js').ModelRole);
   const timeoutMs = project.timeoutMs ?? DEFAULT_TIMEOUT_MS;
   const cc = await runClaude({
-    prompt: buildConflictPrompt(task, conflictFiles),
+    prompt: buildConflictPrompt(task, conflictFiles, project, readGlobalAgentRules()),
     cwd: worktree.dir,
     model,
     runId,
diff --git a/src/model/types.ts b/src/model/types.ts
index 4ff077c..a286e27 100644
--- a/src/model/types.ts
+++ b/src/model/types.ts
@@ -37,6 +37,8 @@ export interface Project {
   /** 项目级成本预算（按模型×token 折算累计；超额自动暂停）*/
   budgetUsd?: number | null;      // 当期预算上限 USD（null=不限）
   budgetPeriod?: 'day' | 'month'; // 预算周期（默认 month）
+  /** L2 项目级 agent 执行规范（注入 executor/planner/reviewer/conflict 的 prompt 头部）*/
+  agentRules?: string | null;
 }
 
 export interface ApprovalRecord {
diff --git a/src/store/db.ts b/src/store/db.ts
index abbb341..76a004c 100644
--- a/src/store/db.ts
+++ b/src/store/db.ts
@@ -37,6 +37,7 @@ export function openDb(file: string): Database.Database {
   ensureColumn(db, 'projects', 'budget_usd', 'budget_usd REAL');                               // 项目当期预算上限 USD（null=不限）
   ensureColumn(db, 'projects', 'budget_period', "budget_period TEXT NOT NULL DEFAULT 'month'"); // 预算周期 day|month
   ensureColumn(db, 'tasks', 'attachments', 'attachments TEXT');                                // 附件 JSON [{name,type,path}]（图片/文件随任务提交）
+  ensureColumn(db, 'projects', 'agent_rules', 'agent_rules TEXT');                              // L2 项目级 agent 执行规范（注入 worker prompt）
   const schema = readFileSync(join(HERE, 'schema.sql'), 'utf8');
   db.exec(schema);
   return db;
diff --git a/src/store/mappers.ts b/src/store/mappers.ts
index 144cb9a..a63e5c8 100644
--- a/src/store/mappers.ts
+++ b/src/store/mappers.ts
@@ -12,6 +12,7 @@ export interface ProjectRow {
   last_sync_at: string | null; logo: string | null; sort_order: number;
   checks: string | null; auto_approve_plan: number; auto_approve_exec: number;
   budget_usd: number | null; budget_period: string | null;
+  agent_rules: string | null;
 }
 export interface TaskRow {
   id: string; project_id: string; parent_id: string | null; depth: number;
@@ -51,6 +52,7 @@ export function rowToProject(r: ProjectRow): Project {
     autoApproveExec: Boolean(r.auto_approve_exec),
     budgetUsd: r.budget_usd ?? null,
     budgetPeriod: (r.budget_period === 'day' ? 'day' : 'month'),
+    agentRules: r.agent_rules ?? null,
   };
 }
 
diff --git a/src/store/schema.sql b/src/store/schema.sql
index 33e30a7..8bd7307 100644
--- a/src/store/schema.sql
+++ b/src/store/schema.sql
@@ -22,7 +22,8 @@ CREATE TABLE IF NOT EXISTS projects (
   auto_approve_plan  INTEGER NOT NULL DEFAULT 0,         -- 全 easy 子任务时跳过 plan_review（0=关）
   auto_approve_exec  INTEGER NOT NULL DEFAULT 0,         -- 双复审 approve 后跳过 exec_review（0=关）
   budget_usd         REAL,                                -- 项目当期预算上限 USD（null=不限）
-  budget_period      TEXT NOT NULL DEFAULT 'month'        -- 预算周期 day | month
+  budget_period      TEXT NOT NULL DEFAULT 'month',       -- 预算周期 day | month
+  agent_rules        TEXT                                 -- L2 项目级 agent 执行规范（注入 worker prompt）
 );
 
 CREATE TABLE IF NOT EXISTS tasks (
diff --git a/src/store/store.ts b/src/store/store.ts
index c274e2f..483bdf4 100644
--- a/src/store/store.ts
+++ b/src/store/store.ts
@@ -46,6 +46,7 @@ export interface PatchProjectInput {
   maxRetries?: number; timeoutMs?: number;
   budgetUsd?: number | null; budgetPeriod?: 'day' | 'month';
   autoApprovePlan?: boolean; autoApproveExec?: boolean; checks?: string | null;
+  agentRules?: string | null;
 }
 export interface PatchTaskInput {
   title?: string; priority?: number; complexity?: Complexity; deps?: string[];
@@ -131,7 +132,7 @@ export class Store {
       status: 'active', created_at: now(),
       last_sync_at: null, logo: null, sort_order: maxOrder + 1,
       checks: null, auto_approve_plan: 0, auto_approve_exec: 0,
-      budget_usd: null, budget_period: 'month',
+      budget_usd: null, budget_period: 'month', agent_rules: null,
     };
     this.db.prepare(
       `INSERT INTO projects (id,name,repo_path,default_branch,verify_cmd,autonomy,model,concurrency,max_retries,timeout_ms,status,created_at,last_sync_at,logo,sort_order,checks,auto_approve_plan,auto_approve_exec)
@@ -238,6 +239,7 @@ export class Store {
       sets.push('auto_approve_exec = @auto_approve_exec'); args.auto_approve_exec = patch.autoApproveExec ? 1 : 0;
     }
     if (patch.checks !== undefined) { sets.push('checks = @checks'); args.checks = patch.checks; }
+    if (patch.agentRules !== undefined) { sets.push('agent_rules = @agent_rules'); args.agent_rules = patch.agentRules; }
 
     if (sets.length > 0) {
       this.db.prepare(`UPDATE projects SET ${sets.join(', ')} WHERE id = @id`).run(args);
diff --git a/test/memory-l1.test.ts b/test/memory-inject.test.ts
similarity index 62%
rename from test/memory-l1.test.ts
rename to test/memory-inject.test.ts
index c2d4f5d..656b6b2 100644
--- a/test/memory-l1.test.ts
+++ b/test/memory-inject.test.ts
@@ -2,7 +2,11 @@ import { test } from 'node:test';
 import assert from 'node:assert/strict';
 import { buildPrompt, buildPlannerPrompt, buildConflictPrompt } from '../src/executor/runner.js';
 import { Store } from '../src/store/index.js';
-import type { Task } from '../src/model/types.js';
+import type { Task, Project } from '../src/model/types.js';
+
+function fakeProject(over: Partial<Project> = {}): Project {
+  return { defaultBranch: 'main', agentRules: null, ...over } as Project;
+}
 
 function fakeTask(over: Partial<Task> = {}): Task {
   return {
@@ -43,6 +47,28 @@ test('L1: 超长错误被截断到 2000 字符', () => {
   assert.ok(!p.includes('X'.repeat(2100)));
 });
 
+test('L2: project.agentRules 注入 executor/planner/conflict/，未设则不注入', () => {
+  const t = fakeTask();
+  const withRules = fakeProject({ agentRules: '本项目禁止改 schema.sql' });
+  assert.ok(buildPrompt(t, withRules).includes('项目规范'));
+  assert.ok(buildPrompt(t, withRules).includes('禁止改 schema.sql'));
+  assert.ok(buildPlannerPrompt(fakeTask({ complexity: 'hard' }), 'decompose', withRules).includes('禁止改 schema.sql'));
+  assert.ok(buildConflictPrompt(t, ['a.ts'], withRules).includes('禁止改 schema.sql'));
+  // 未设规范 → 不出现「项目规范」标题
+  assert.ok(!buildPrompt(t, fakeProject()).includes('项目规范'));
+  assert.ok(!buildPrompt(t).includes('项目规范'));  // 连 project 都没传
+});
+
+test('L4: globalRules 注入且排在项目规范之前', () => {
+  const t = fakeTask();
+  const p = buildPrompt(t, fakeProject({ agentRules: 'PROJ_RULE' }), 'GLOBAL_RULE');
+  assert.ok(p.includes('全局执行规范'));
+  assert.ok(p.includes('GLOBAL_RULE'));
+  assert.ok(p.indexOf('GLOBAL_RULE') < p.indexOf('PROJ_RULE'), '全局规范在项目规范之前');
+  // 全局规范在任务内容之前（注入顺序：L4→L2→任务内容）
+  assert.ok(p.indexOf('GLOBAL_RULE') < p.indexOf('任务内容'));
+});
+
 test('lastRunErrorOf 取最近一次失败 run 的错误（任意 kind）', () => {
   const s = new Store(':memory:');
   const p = s.createProject({ name: 'l1', repoPath: '/tmp/l1-' + Math.random() });