Add approved dynamic tool arguments steering

codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json

@@ -1853,6 +1853,9 @@
     "DynamicToolCallResponse": {
       "$schema": "http://json-schema.org/draft-07/schema#",
       "properties": {
+        "approvedArguments": {
+          "description": "Optional client-approved replacement arguments. When present, this must fully match the existing registered schema for the same dynamic tool."
+        },
         "contentItems": {
           "items": {
             "$ref": "#/definitions/v2/DynamicToolCallOutputContentItem"
@@ -14491,4 +14494,4 @@
   },
   "title": "CodexAppServerProtocol",
   "type": "object"
-}
+}