diff --git a/AGENTS.md b/AGENTS.md
index 95b1082..e85e8cf 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -2,4 +2,4 @@
 
 ## 工作习惯
 
-- **文件清理规则**：每次完成任务后，确认所有子任务都完成，再统一删除要清理的文件（如测试脚本、验证脚本），不要边做边删，留到最后一次性处理。
+- **文件清理规则（铁律）**：绝对不要在任务执行过程中删除文件。所有删除操作必须等到所有任务都确认完成后，最后统一一次性删除。即使中途生成了测试脚本、验证脚本、调试文件，也留着别动，最后一起清理。
diff --git a/app/templates/base.html b/app/templates/base.html
index a2b91ad..5d09319 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -3,13 +3,13 @@
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>{% block title %}明信片管理器{% endblock %}</title>
+    <title>{% block title %}星笺{% endblock %}</title>
     <link rel="stylesheet" href="/static/style.css">
 </head>
 <body>
     {% block nav %}
     <nav class="navbar">
-        <a href="/dashboard" class="nav-brand">📮 明信片管理器</a>
+        <a href="/dashboard" class="nav-brand">📮 星笺</a>
         <div class="nav-links">
             {% if user is defined and user %}
             <a href="/profiles">Profile</a>
diff --git a/app/templates/dashboard.html b/app/templates/dashboard.html
index 6f77d82..91c93d8 100644
--- a/app/templates/dashboard.html
+++ b/app/templates/dashboard.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}总览 - 明信片管理器{% endblock %}
+{% block title %}总览 - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <h1>👋 欢迎，{{ user.username }}</h1>
@@ -125,7 +125,7 @@
 {% else %}
 <div class="empty-state">
     <div class="empty-icon">📮</div>
-    <p>欢迎使用明信片管理器！</p>
+    <p>欢迎使用星笺！</p>
     <p class="empty-sub">创建一个 <a href="/profiles">Profile</a> 开始管理你的明信片</p>
 </div>
 {% endif %}
diff --git a/app/templates/login.html b/app/templates/login.html
index 9ef7b43..c4c40eb 100644
--- a/app/templates/login.html
+++ b/app/templates/login.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}登录 - 明信片管理器{% endblock %}
+{% block title %}登录 - 星笺{% endblock %}
 {% block content %}
 <div class="auth-form">
     <h2>登录</h2>
diff --git a/app/templates/postcard_detail.html b/app/templates/postcard_detail.html
index 7541ce3..522f47f 100644
--- a/app/templates/postcard_detail.html
+++ b/app/templates/postcard_detail.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}明信片详情 - 明信片管理器{% endblock %}
+{% block title %}明信片详情 - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <div class="detail-title-row">
diff --git a/app/templates/postcard_form.html b/app/templates/postcard_form.html
index e08eb10..0afe287 100644
--- a/app/templates/postcard_form.html
+++ b/app/templates/postcard_form.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}{{ '编辑' if postcard else '新建' }}明信片 - 明信片管理器{% endblock %}
+{% block title %}{{ '编辑' if postcard else '新建' }}明信片 - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <h1>{{ '编辑' if postcard else '新建' }}明信片</h1>
diff --git a/app/templates/postcards.html b/app/templates/postcards.html
index 3f49613..63b6b15 100644
--- a/app/templates/postcards.html
+++ b/app/templates/postcards.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}{{ profile.nickname }} - 明信片管理器{% endblock %}
+{% block title %}{{ profile.nickname }} - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <h1>{{ profile.nickname }} 的明信片</h1>
diff --git a/app/templates/profile_showcase.html b/app/templates/profile_showcase.html
index e402375..5463d3d 100644
--- a/app/templates/profile_showcase.html
+++ b/app/templates/profile_showcase.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}{{ profile.nickname }} 展示设置 - 明信片管理器{% endblock %}
+{% block title %}{{ profile.nickname }} 展示设置 - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <div class="detail-title-row">
diff --git a/app/templates/profiles.html b/app/templates/profiles.html
index 43abb3f..142e6b3 100644
--- a/app/templates/profiles.html
+++ b/app/templates/profiles.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}Profile - 明信片管理器{% endblock %}
+{% block title %}Profile - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <h1>Profile</h1>
diff --git a/app/templates/settings.html b/app/templates/settings.html
index 8bca5f4..e3462d8 100644
--- a/app/templates/settings.html
+++ b/app/templates/settings.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}用户设置 - 明信片管理器{% endblock %}
+{% block title %}用户设置 - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <h1>用户设置</h1>
diff --git a/app/templates/showcase_manage.html b/app/templates/showcase_manage.html
index d078dad..9eef529 100644
--- a/app/templates/showcase_manage.html
+++ b/app/templates/showcase_manage.html
@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% block title %}展示管理 - 明信片管理器{% endblock %}
+{% block title %}展示管理 - 星笺{% endblock %}
 {% block content %}
 <div class="section-header">
     <div class="detail-title-row">
