## Summary
- add a public `defineStackConfig` helper and `StackConfig` type for
nested config authoring
- emit helper-based nested config files from the CLI and local emulator
- update type coverage and e2e expectations for the new `stack.config`
format
## Testing
- pnpm --filter ./packages/stack-shared typecheck
- pnpm --filter ./packages/stack-cli typecheck
- pnpm --filter ./apps/backend typecheck
- pnpm --filter ./apps/e2e typecheck
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **New Features**
* Type-safe configuration API with compile-time validation
* New config rendering utility for producing typed config files
* Public local-emulator settings and a public helper to detect emulator
mode
* Added --overwrite flag for config pull
* **Improvements**
* Stronger validation and clearer errors for invalid or conflicting
config shapes
* Config output now includes explicit TypeScript typing
* **Tests**
* Added and strengthened tests for config authoring, rendering, CLI
behavior, and emulator flows
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!--
Make sure you've read the CONTRIBUTING.md guidelines:
https://github.com/stack-auth/stack-auth/blob/dev/CONTRIBUTING.md
-->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Fixed authentication errors in the Claude agent.
* **Refactor**
* Simplified the CLI initialization process to default to cloud project
linking, removing interactive prompts.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!--
Make sure you've read the CONTRIBUTING.md guidelines:
https://github.com/stack-auth/stack-auth/blob/dev/CONTRIBUTING.md
-->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Interactive init workflow (create, link-config, link-cloud) with safe
non-interactive behavior; writes/updates project config and .env, and
prints STACK AUTH setup instructions.
* CLI assistant/agent with a progress UI for long-running tasks.
* Backend AI proxy endpoint that validates and forwards AI requests to
an external provider.
* **Tests**
* End-to-end tests covering all init modes, outputs, env linking, and
error cases.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
## Release Notes
* **New Features**
* Added Stack CLI with authentication (login/logout) commands.
* Added project management commands to list and create projects.
* Added configuration management to pull and push project settings.
* Added code execution capability to run JavaScript expressions.
* Added initialization command for Stack Auth setup.
* **Tests**
* Added comprehensive end-to-end test suite for CLI functionality.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
