[codex][mcp] Add resource uri meta to tool call item. (#17831)

- [x] Add resource uri meta to tool call item so that the app-server
client can start prefetching resources immediately without loading mcp
server status.

codex-rs/protocol/src/protocol.rs

@@ -2362,6 +2362,9 @@ pub struct McpToolCallBeginEvent {
     /// Identifier so this can be paired with the McpToolCallEnd event.
     pub call_id: String,
     pub invocation: McpInvocation,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    #[ts(optional)]
+    pub mcp_app_resource_uri: Option<String>,
 }
 
 #[derive(Debug, Clone, Deserialize, Serialize, JsonSchema, TS, PartialEq)]
@@ -2369,6 +2372,9 @@ pub struct McpToolCallEndEvent {
     /// Identifier for the corresponding McpToolCallBegin that finished.
     pub call_id: String,
     pub invocation: McpInvocation,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    #[ts(optional)]
+    pub mcp_app_resource_uri: Option<String>,
     #[ts(type = "string")]
     pub duration: Duration,
     /// Result of the tool call. Note this could be an error.