refactor(commands): split CLI commands

src/commands/auth-choice.preferred-provider.ts

@@ -0,0 +1,31 @@
+import type { AuthChoice } from "./onboard-types.js";
+
+const PREFERRED_PROVIDER_BY_AUTH_CHOICE: Partial<Record<AuthChoice, string>> = {
+  oauth: "anthropic",
+  "setup-token": "anthropic",
+  "claude-cli": "anthropic",
+  token: "anthropic",
+  apiKey: "anthropic",
+  "openai-codex": "openai-codex",
+  "codex-cli": "openai-codex",
+  chutes: "chutes",
+  "openai-api-key": "openai",
+  "openrouter-api-key": "openrouter",
+  "moonshot-api-key": "moonshot",
+  "gemini-api-key": "google",
+  "zai-api-key": "zai",
+  antigravity: "google-antigravity",
+  "synthetic-api-key": "synthetic",
+  "github-copilot": "github-copilot",
+  "minimax-cloud": "minimax",
+  "minimax-api": "minimax",
+  "minimax-api-lightning": "minimax",
+  minimax: "lmstudio",
+  "opencode-zen": "opencode",
+};
+
+export function resolvePreferredProviderForAuthChoice(
+  choice: AuthChoice,
+): string | undefined {
+  return PREFERRED_PROVIDER_BY_AUTH_CHOICE[choice];
+}