Add app-server goal clear API

codex-rs/app-server-protocol/schema/json/ClientRequest.json

@@ -2838,6 +2838,17 @@
       ],
       "type": "object"
     },
+    "ThreadGoalClearParams": {
+      "properties": {
+        "threadId": {
+          "type": "string"
+        }
+      },
+      "required": [
+        "threadId"
+      ],
+      "type": "object"
+    },
     "ThreadGoalGetParams": {
       "properties": {
         "threadId": {
@@ -4058,6 +4069,30 @@
       "title": "Thread/goal/getRequest",
       "type": "object"
     },
+    {
+      "properties": {
+        "id": {
+          "$ref": "#/definitions/RequestId"
+        },
+        "method": {
+          "enum": [
+            "thread/goal/clear"
+          ],
+          "title": "Thread/goal/clearRequestMethod",
+          "type": "string"
+        },
+        "params": {
+          "$ref": "#/definitions/ThreadGoalClearParams"
+        }
+      },
+      "required": [
+        "id",
+        "method",
+        "params"
+      ],
+      "title": "Thread/goal/clearRequest",
+      "type": "object"
+    },
     {
       "properties": {
         "id": {