diff --git a/.gitignore b/.gitignore
index 3b2993c..ba1ffc2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ uploads/*
 *.db
 .env
 server.log
+scripts/
diff --git a/app/locales/en.json b/app/locales/en.json
index e93792a..8d9e088 100644
--- a/app/locales/en.json
+++ b/app/locales/en.json
@@ -17,6 +17,11 @@
   "admin.copyright_label": "Copyright Text",
   "admin.copyright_hint": "Displayed at the bottom of all pages. Leave empty to hide.",
   "admin.save_config": "Save",
+  "admin.invite_length_error": "Invite code must be 8 characters",
+  "admin.invite_exists_error": "Invite code already exists",
+  "admin.invite_created": "Invite code {code} created",
+  "admin.invite_updated": "Invite code {code} updated",
+  "admin.config_saved": "Settings saved",
   "login.title": "Login",
   "login.username": "Username",
   "login.password": "Password",
diff --git a/app/locales/zh.json b/app/locales/zh.json
index e19c233..40e515e 100644
--- a/app/locales/zh.json
+++ b/app/locales/zh.json
@@ -17,6 +17,11 @@
   "admin.copyright_label": "Copyright 文本",
   "admin.copyright_hint": "将显示在所有页面底部，留空则不显示。",
   "admin.save_config": "保存设置",
+  "admin.invite_length_error": "邀请码必须为8个字符",
+  "admin.invite_exists_error": "邀请码已存在",
+  "admin.invite_created": "邀请码 {code} 已创建",
+  "admin.invite_updated": "邀请码 {code} 已更新",
+  "admin.config_saved": "设置已保存",
   "login.title": "登录",
   "login.username": "用户名",
   "login.password": "密码",
diff --git a/app/routers/web.py b/app/routers/web.py
index 321b84c..2b3a355 100644
--- a/app/routers/web.py
+++ b/app/routers/web.py
@@ -102,7 +102,7 @@ def _get_copyright() -> str:
         return ""
 
 
-templates.env.globals["copyright_text"] = _get_copyright()
+templates.env.globals["get_copyright"] = _get_copyright
 
 
 def _redirect(url: str) -> RedirectResponse:
@@ -270,7 +270,7 @@ def admin_save_config(
         cfg = SystemConfig(key="copyright_text", value=copyright_text.strip())
         db.add(cfg)
     db.commit()
-    return _admin_render(request, user, db, "config", success="Saved")
+    return _admin_render(request, user, db, "config", success=_t("admin.config_saved", user.language))
 
 
 @router.post("/admin/invites/add")
@@ -291,9 +291,9 @@ def admin_add_invite(
     else:
         code = code.strip()
         if len(code) != 8:
-            return _admin_render(request, user, db, "invites", error="邀请码必须为8个字符")
+            return _admin_render(request, user, db, "invites", error=_t("admin.invite_length_error", user.language))
         if db.query(InviteCode).filter(InviteCode.code == code).first():
-            return _admin_render(request, user, db, "invites", error="邀请码已存在")
+            return _admin_render(request, user, db, "invites", error=_t("admin.invite_exists_error", user.language))
     # Parse limits
     m_uses = None
     exp_at = None
@@ -307,7 +307,7 @@ def admin_add_invite(
     )
     db.add(new_code)
     db.commit()
-    return _admin_render(request, user, db, "invites", success=f"邀请码 {code} 已创建")
+    return _admin_render(request, user, db, "invites", success=_t("admin.invite_created", user.language).format(code=code))
 
 
 @router.post("/admin/invites/{code_id}/edit")
@@ -335,7 +335,7 @@ def admin_edit_invite(
         code_obj.max_uses = None
         code_obj.expires_at = None
     db.commit()
-    return _admin_render(request, user, db, "invites", success=f"邀请码 {code_obj.code} 已更新")
+    return _admin_render(request, user, db, "invites", success=_t("admin.invite_updated", user.language).format(code=code_obj.code))
 
 
 @router.post("/admin/invites/{code_id}/delete")
diff --git a/app/templates/base.html b/app/templates/base.html
index b6fd998..4753d05 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -39,9 +39,10 @@
     <main class="container">
         {% block content %}{% endblock %}
     </main>
-    {% if copyright_text %}
+    {% set _c = get_copyright() %}
+    {% if _c %}
     <footer style="text-align:center;padding:2rem 1rem;color:var(--text-muted);font-size:.8rem;border-top:1px solid var(--border);margin-top:2rem">
-        {{ copyright_text }}
+        {{ _c }}
     </footer>
     {% endif %}
 </body>
diff --git a/scripts/migrate_apikey_permissions.py b/scripts/migrate_apikey_permissions.py
deleted file mode 100644
index 1ea8a02..0000000
--- a/scripts/migrate_apikey_permissions.py
+++ /dev/null
@@ -1,20 +0,0 @@
-"""Migrate: add permissions column to api_keys table."""
-import sqlite3
-from pathlib import Path
-
-DB_PATH = Path(__file__).parent.parent / "postcard.db"
-
-conn = sqlite3.connect(str(DB_PATH))
-cur = conn.cursor()
-
-cur.execute("PRAGMA table_info(api_keys)")
-cols = [r[1] for r in cur.fetchall()]
-
-if "permissions" not in cols:
-    cur.execute('ALTER TABLE api_keys ADD COLUMN permissions TEXT NOT NULL DEFAULT "[]"')
-    conn.commit()
-    print("OK: column 'permissions' added to api_keys")
-else:
-    print("SKIP: column 'permissions' already exists")
-
-conn.close()
diff --git a/scripts/migrate_system_config.py b/scripts/migrate_system_config.py
deleted file mode 100644
index fd5f026..0000000
--- a/scripts/migrate_system_config.py
+++ /dev/null
@@ -1,24 +0,0 @@
-"""Migrate: create system_config table."""
-import sqlite3
-from pathlib import Path
-
-DB_PATH = Path(__file__).parent.parent / "postcard.db"
-
-conn = sqlite3.connect(str(DB_PATH))
-cur = conn.cursor()
-
-cur.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='system_config'")
-if not cur.fetchone():
-    cur.execute(
-        "CREATE TABLE system_config ("
-        "key TEXT PRIMARY KEY, "
-        "value TEXT NOT NULL DEFAULT '', "
-        "updated_at TIMESTAMP"
-        ")"
-    )
-    conn.commit()
-    print("OK: system_config table created")
-else:
-    print("SKIP: system_config table exists")
-
-conn.close()