Important

Adds support chat session simulation and trace detail peek view with layout improvements in session pages.

• Behavior:
  • Adds createSupportChatSession in seed-postgres.ts to simulate a realistic support chat scenario.
  • Implements generateSupportChatSessionData in data-generators.ts for generating traces, observations, and scores for support chat sessions.
  • Introduces createSupportChatSessionTraces in seeder-orchestrator.ts to insert generated support chat data.
• UI Components:
  • Enhances SessionPage in index.tsx with a TablePeekView for trace detail navigation.
  • Adds usePreserveRelativeScroll hook in usePreserveRelativeScroll.ts to maintain scroll position during layout changes.
  • Updates IOPreview in IOPreview.tsx to use the new scroll preservation hook.
• Misc:
  • Adjusts layout and styling in SessionPage for better user experience.
  • Adds NewDatasetItemFromTraceId component in index.tsx for creating dataset items from traces.

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