[REFACTOR] Config File: get rid of nodefilters in favor of node lists…

[ljluestc]

This PR introduces a new configuration file format (v1alpha6) that replaces the confusing nodeFilters syntax with explicit node definitions. The new format uses a nodes array where each node configuration is self-contained, making configurations more readable and easier to understand.

Key Changes:

• New v1alpha6 API version with explicit node definitions
• Replaced servers/agents counts with nodes array containing role, name, and replicas
• Moved per-node configurations (volumes, ports, env vars, labels, files) from global nodeFilters to individual node configs
• Added migration support from v1alpha5 to v1alpha6
• New transform logic for the v1alpha6 format
• JSON schema validation for the new format

Breaking Changes

• This is a new API version (v1alpha6), so existing v1alpha5 configs will continue to work
• Migration is handled automatically when v1alpha5 configs are loaded
• The old format will be deprecated in a future release

Migration Path

• Existing v1alpha5 configurations are automatically migrated to v1alpha6
• Migration converts servers/agents counts to explicit node definitions
• nodeFilters are resolved and applied to specific nodes during migration
• All existing functionality is preserved

Internal Changes (pkg/)

• pkg/config/v1alpha6/: New package containing v1alpha6 configuration types, migration logic, and JSON schema
• pkg/config/transform_v1alpha6.go: New transform logic for handling v1alpha6 configurations
• The changes are primarily internal to the configuration system and don't affect the CLI directly
• Existing CLI commands continue to work with both old and new configuration formats

Future Considerations

• This change paves the way for more advanced node configuration options
• The explicit node model makes it easier to add node-specific features in the future
• Consider deprecating v1alpha5 in a future major release

Files Added/Modified

• pkg/config/v1alpha6/types.go - New configuration types
• pkg/config/v1alpha6/migrations.go - Migration logic from v1alpha5
• pkg/config/v1alpha6/schema.json - JSON schema for validation
• pkg/config/transform_v1alpha6.go - Transform logic for new format
• example-v1alpha6.yaml - Example configuration demonstrating new syntax

Testing

• Migration logic tested with various v1alpha5 configuration patterns
• New transform logic handles all node configuration options
• JSON schema validates new configuration format correctly
• Backward compatibility maintained for existing configurations