Node Versioning + Stability Fixes

Node Versioning

Track changes to individual node configurations over time with full version history and restore capability.

• Manual save versions during experimentation with "Save Version" button

• View and restore previous node versions with timestamps and publisher info

• Draft mode indicator with notification for unpublished agents

Improvements

• LLM-based retry on integration nodes - describe retry conditions in natural language

• SharePoint Excel write actions added (update cells, append rows)

• Agent chat container optimized for minimal re-renders

Bug Fixes

• GitHub trigger connection error on creation resolved

• OpenAPI spec import via URL no longer stalls for 5+ minutes

• Task list API response time improved for first call