feat(cli-tools): add Grok Build setup

Add Grok Build to Dashboard → CLI Tools. Apply writes a [model.9router]
custom model to ~/.grok/config.toml and sets [models].default, routing
the xAI Grok TUI through 9Router. Reset removes the slot and restores
the previous default.

src/app/(dashboard)/dashboard/cli-tools/components/index.js

@@ -12,6 +12,7 @@ export { default as ClineToolCard } from "./ClineToolCard";
 export { default as KiloToolCard } from "./KiloToolCard";
 export { default as DeepSeekTuiToolCard } from "./DeepSeekTuiToolCard";
 export { default as JcodeToolCard } from "./JcodeToolCard";
+export { default as GrokBuildToolCard } from "./GrokBuildToolCard";
 export { default as MitmServerCard } from "./MitmServerCard";
 export { default as MitmToolCard } from "./MitmToolCard";
 export { default as MitmLinkCard } from "./MitmLinkCard";