Explicit target handling added
Introduced target_value to explicitly define the value sent via target_parameter. If either field is present, both are now required.

Support for relative target paths
target_value now supports absolute URIs as well as absolute-path references starting with /, optionally including query and fragment.

Improved validation of link map login URLs
In link_mapping, login URLs are now strictly required to be HTTPS, while IdP entityID keys may be any non-empty string (e.g. HTTPS URIs or URNs), due to legacy SAML entityID requirements.

IntroducedIdP Discovery Metadata feed. Refactored document structure for consistency and clarity.

Updating JSON schemas to version 2020-12 and examples