fix(cli): respect dev.usePseudotranslator config to skip API validation

[ShashwatpSingh]

Summary

Fixes the issue where dev.usePseudotranslator: true in config was ignored during CLI setup, causing unnecessary API key validation.

Problem

When users set:

{
  "dev": {
    "usePseudotranslator": true
  }
}

The CLI still required API keys because it only checked the --pseudo CLI flag, not the config option.

Changes

• Check ctx.config?.dev?.usePseudotranslator when selecting the localization provider
• Also check config in authentication skip logic
• Ensures API keys are not required when using pseudotranslator via config

Testing

• Verified usePseudotranslator: true works without API keys
• Verified --pseudo flag still works
• Verified normal translation flow still requires API keys

Fixes #1983

Summary by CodeRabbit

• New Features
  • Pseudo-translator can now be enabled through development configuration settings, in addition to the command-line flag option.
  • Authentication step now properly respects the pseudo-translator configuration setting.

[coderabbitai]

📝 Walkthrough

Walkthrough

Modified the provider selection logic in the CLI setup to respect the dev.usePseudotranslator configuration option alongside the --pseudo flag, allowing pseudo-translation to work without API key validation when configured in i18n.json.

Changes

Cohort / File(s)	Summary
Provider Selection Logic packages/cli/src/cli/cmd/run/setup.ts	Combined condition to enable pseudo provider when either the --pseudo flag is set OR ctx.config.dev.usePseudotranslator is true; extended authentication check to disable when config-based pseudotranslator is enabled.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 A config flag that skipped its turn,
Now works in harmony, we learn!
No API keys when pseudo's on,
The CLI setup marches on! ✨

🚥 Pre-merge checks | ✅ 5 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately and concisely describes the main change: fixing the CLI to respect the dev.usePseudotranslator config option to skip API validation.
Description check	✅ Passed	The description covers the problem statement, changes made, testing steps, and issue reference, though testing checkboxes are not marked as completed.
Linked Issues check	✅ Passed	The code changes directly address all objectives from issue #1983: checking dev.usePseudotranslator in provider selection and authentication skip logic, enabling pseudotranslation without API keys.
Out of Scope Changes check	✅ Passed	All changes in setup.ts are scoped to fixing the pseudotranslator configuration handling; no unrelated modifications are present.
Merge Conflict Detection	✅ Passed	✅ No merge conflicts detected when merging into main

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

---

No actionable comments were generated in the recent review. 🎉

🧹 Recent nitpick comments

packages/cli/src/cli/cmd/run/setup.ts (1)

71-77: Defense-in-depth is reasonable here, though technically redundant.

When isPseudo is true, the provider on line 54 is set to "pseudo", so ctx.localizer?.id will never be "Lingo.dev" — meaning the first part of the enabled condition already short-circuits to false. The explicit !ctx.flags.pseudo && !ctx.config?.dev?.usePseudotranslator guards are redundant but make the intent clear and guard against future refactors that might change the localizer id logic. Fine as-is.

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