feat: add GEWU installer and service contracts

contracts/schemas/Scope.schema.json

@@ -0,0 +1,58 @@
+{
+  "additionalProperties": false,
+  "description": "Project context plus optional project includes; all-project access is deliberate.",
+  "properties": {
+    "all_projects": {
+      "default": false,
+      "title": "All Projects",
+      "type": "boolean"
+    },
+    "include_projects": {
+      "anyOf": [
+        {
+          "items": {
+            "maxLength": 128,
+            "minLength": 1,
+            "pattern": "^[a-zA-Z0-9][a-zA-Z0-9._:-]*$",
+            "type": "string"
+          },
+          "maxItems": 50,
+          "type": "array"
+        },
+        {
+          "type": "null"
+        }
+      ],
+      "default": null,
+      "title": "Include Projects"
+    },
+    "include_shared": {
+      "default": true,
+      "title": "Include Shared",
+      "type": "boolean"
+    },
+    "projects": {
+      "items": {
+        "maxLength": 128,
+        "minLength": 1,
+        "pattern": "^[a-zA-Z0-9][a-zA-Z0-9._:-]*$",
+        "type": "string"
+      },
+      "maxItems": 50,
+      "minItems": 1,
+      "title": "Projects",
+      "type": "array"
+    },
+    "schema_version": {
+      "const": 1,
+      "default": 1,
+      "title": "Schema Version",
+      "type": "integer"
+    }
+  },
+  "required": [
+    "projects"
+  ],
+  "title": "Scope",
+  "type": "object"
+}