Add initial_path option to remote rule-sets

docs/configuration/rule-set/index.md

@@ -2,7 +2,8 @@
 
     :material-plus: [http_client](#http_client)  
     :material-delete-clock: [download_detour](#download_detour)  
-    :material-alert: [tag](#tag)
+    :material-alert: [tag](#tag)  
+    :material-plus: [initial_path](#initial_path)
 
 !!! quote "Changes in sing-box 1.10.0"
 
@@ -49,6 +50,7 @@
       "tag": "", // or []
       "format": "source", // or binary
       "url": "",
+      "initial_path": "",
       "http_client": "", // or {}
       "update_interval": "",
 
@@ -76,7 +78,7 @@ Tag of rule-set.
 
     `tag` also accepts a list of tags to define multiple rule-sets sharing other options at once.
 
-    The `{tag}` placeholder in `path` or `url` is replaced by each tag,
+    The `{tag}` placeholder in `path`, `url` or `initial_path` is replaced by each tag,
     and is required when multiple tags are set.
 
     Multiple tags conflict with `type: inline`.
@@ -121,6 +123,16 @@ File path of rule-set.
 
 Download URL of rule-set.
 
+#### initial_path
+
+!!! question "Since sing-box 1.14.0"
+
+File path of the initial rule-set content.
+
+Read once at startup when no cached rule-set is available, so startup is not
+blocked by the initial download. The rule-set is still updated in the background
+immediately after startup.
+
 #### http_client
 
 !!! question "Since sing-box 1.14.0"

docs/configuration/rule-set/index.zh.md

@@ -2,7 +2,8 @@
 
     :material-plus: [http_client](#http_client)  
     :material-delete-clock: [download_detour](#download_detour)  
-    :material-alert: [tag](#tag)
+    :material-alert: [tag](#tag)  
+    :material-plus: [initial_path](#initial_path)
 
 !!! quote "sing-box 1.10.0 中的更改"
 
@@ -49,6 +50,7 @@
       "tag": "", // 或 []
       "format": "source", // or binary
       "url": "",
+      "initial_path": "",
       "http_client": "", // 或 {}
       "update_interval": "",
 
@@ -76,7 +78,7 @@
 
     `tag` 也接受一组标签，用于一次定义多个共享其他选项的规则集。
 
-    `path` 或 `url` 中的 `{tag}` 占位符将被替换为每个标签，设置多个标签时必填。
+    `path`、`url` 或 `initial_path` 中的 `{tag}` 占位符将被替换为每个标签，设置多个标签时必填。
 
     多个标签与 `type: inline` 冲突。
 
@@ -120,6 +122,15 @@
 
 规则集的下载 URL。
 
+#### initial_path
+
+!!! question "自 sing-box 1.14.0 起"
+
+规则集初始内容的文件路径。
+
+仅在启动时没有可用的规则集缓存时读取一次，使启动不被初始下载阻塞。
+启动后规则集仍会立即在后台更新。
+
 #### http_client
 
 !!! question "自 sing-box 1.14.0 起"