feat: establish read-only DocForge MCP foundation

schemas/result.schema.json

@@ -0,0 +1,36 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://docforge.local/schema/result-v1.json",
+  "title": "DocForge result envelope",
+  "oneOf": [
+    {
+      "type": "object",
+      "required": ["status", "project_id", "source_hash"],
+      "properties": {
+        "status": { "const": "ok" },
+        "project_id": { "type": "string" },
+        "revision": { "type": "string" },
+        "source_hash": { "type": "string", "pattern": "^[0-9a-f]{64}$" },
+        "adapter": { "type": "string" }
+      }
+    },
+    {
+      "type": "object",
+      "required": ["status", "error"],
+      "properties": {
+        "status": { "const": "error" },
+        "error": {
+          "type": "object",
+          "required": ["code", "message", "details"],
+          "properties": {
+            "code": { "type": "string", "minLength": 1 },
+            "message": { "type": "string", "minLength": 1 },
+            "details": { "type": "object" }
+          },
+          "additionalProperties": false
+        }
+      },
+      "additionalProperties": false
+    }
+  ]
+}