Add GSP project manifest and design layout

language/README.md

@@ -12,6 +12,7 @@ README 面向准备使用 GSP 语言的人类和 AI。它说明 GSP 的用途、
 |---|---|
 | `README.md` | GSP 语言使用前说明。给人类和 AI 阅读。 |
 | `gsp.schema.json` | GSP 第一版核心字段规范。使用 JSON Schema 表达，便于 AI、工具、编译器和实现模块识别。 |
+| `gsp.manifest.schema.json` | GSP 工程 manifest 字段规范。 |
 
 ## GSP 是什么
 
@@ -57,6 +58,8 @@ id: feedback.positive
 
 只有 `id` 的 GSP 是占位声明。它表示该设计对象存在，但尚未被细化。
 
+默认情况下，`.gsp` 文件放在 GSP 工程根目录的 `design/` 目录下。
+
 ## 基础 GSP
 
 `context` 用于写入核心设计内容。

language/gsp.manifest.schema.json

@@ -0,0 +1,62 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://gsp.local/schema/gsp.manifest.schema.json",
+  "title": "GSP Manifest",
+  "description": "Game Specification Protocol project manifest schema.",
+  "type": "object",
+  "additionalProperties": true,
+  "properties": {
+    "gspVersion": {
+      "type": "string",
+      "description": "GSP language version used by this project."
+    },
+    "toolkitVersion": {
+      "type": "string",
+      "description": "Expected GSP Toolkit version."
+    },
+    "project": {
+      "type": "string",
+      "description": "Project id or name."
+    },
+    "entry": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "minLength": 1
+      },
+      "description": "Entry GSP ids."
+    },
+    "scan": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "minLength": 1
+      },
+      "description": "Directories or files scanned by the Toolkit. Defaults to design."
+    },
+    "stageRules": {
+      "type": "object",
+      "additionalProperties": {
+        "type": "object",
+        "additionalProperties": true,
+        "properties": {
+          "minResolution": {
+            "type": "string",
+            "enum": ["L0", "L1", "L2", "L3", "L4", "L5"]
+          }
+        }
+      }
+    },
+    "types": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "minLength": 1
+      }
+    },
+    "output": {
+      "type": "string",
+      "description": "Default Toolkit output directory."
+    }
+  }
+}