Generate Postman API collection from Rails

Define and validate skill structure for agent framework integration

When onboarding a new skill into a framework or verifying structure.

• · skill metadata YAML
• · handler implementation

• · validated manifest
• · integration errors or warnings

• · skill schema validator
• · framework SDK

• · metadata follows spec
• · handler returns correct type

• · manifest malformed YAML
• · missing required fields
• · handler signature mismatch

• · Schema reference included
• · validation rule list provided