# Local Validator for Offline Config Checking

## Module
Cli

## Status
IMPLEMENTED

## Description
Offline local validator that checks stella.yaml configuration files without requiring server connectivity, enabling developers to validate configs before committing.

## Implementation Details
- **Validation Module**: `src/Cli/StellaOps.Cli/Validation/` -- offline validation infrastructure
- **Command Group**: `src/Cli/StellaOps.Cli/Commands/ConfigCommandGroup.cs` -- config validation under config commands
- **Commands**:
  - `stella config validate` / `stella config validate-yaml <path>` -- validate stella.yaml configuration offline
- **Validation checks**: schema compliance, required fields, value ranges, cross-field consistency

## E2E Test Plan
- [ ] Run `stella config validate ./stella.yaml` and verify validation passes for valid config
- [ ] Run with invalid config and verify validation errors reported with line numbers
- [ ] Verify validation works without network connectivity (offline)
- [ ] Verify schema compliance checks for all required fields
- [ ] Verify value range validation (e.g., port numbers, timeout values)
- [ ] Verify cross-field consistency checks