refactor: replace opencode/glm-4.7-free with opencode/big-pickle model

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/cli/tui-install-prompts.ts

@@ -32,7 +32,7 @@ export async function promptInstallConfig(detected: DetectedConfig): Promise<Ins
   const claude = await selectOrCancel<ClaudeSubscription>({
     message: "Do you have a Claude Pro/Max subscription?",
     options: [
-      { value: "no", label: "No", hint: "Will use opencode/glm-4.7-free as fallback" },
+      { value: "no", label: "No", hint: "Will use opencode/big-pickle as fallback" },
       { value: "yes", label: "Yes (standard)", hint: "Claude Opus 4.5 for orchestration" },
       { value: "max20", label: "Yes (max20 mode)", hint: "Full power with Claude Sonnet 4.6 for Librarian" },
     ],