* fix(sap): resolve JSON serialization error and update documentation
- Fix 'Object of type cached_property is not JSON serializable' error
- Replace @cached_property with manual caching in deployment_url
- Update documentation examples to match sap_proxy_config.yaml
- Add Anthropic model naming clarification (anthropic-- prefix)
- Improve authentication documentation with tabbed interface
Fixes critical bug preventing SAP Gen AI Hub integration from working.
Fully tested with both chat and embedding endpoints.
* docs: update SAP provider documentation
* Update SAP provider documentation with better setup instructions
Rewrote the SAP docs to make it easier for users to get started. Added a quick start section, clarified the authentication options, explained model naming differences between SDK and proxy usage, and included some troubleshooting tips.
* Revert transformation files - keep only documentation changes
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