fix(grok-cli): align Grok Build with current subscription protocol (#2590)

open-sse/config/grokCli.js

@@ -0,0 +1,10 @@
+export const GROK_CLI_VERSION = "0.2.99";
+export const GROK_CLI_MODEL = "grok-build";
+export const GROK_CLI_BASE_URL = "https://cli-chat-proxy.grok.com/v1";
+export const GROK_CLI_CLIENT_IDENTIFIER = "grok-shell";
+export const GROK_CLI_USER_AGENT = `grok-shell/${GROK_CLI_VERSION} (linux; x86_64)`;
+
+export function supportsGrokCliReasoningEffort(model) {
+  // ponytail: unknown models omit effort until live metadata reaches dispatch.
+  return /^grok-4\.5(?:$|-)/.test(String(model || ""));
+}