feat: add support for displaying legacy pre-parts array messages #103
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Summary
Added backward compatibility for displaying messages that use the deprecated/legacy format (pre-parts array).
Problem
After the merge, legacy messages stored with deprecated fields (like
body,thinkingContent,streamChunks) were not displaying in the UI because the conversion function only handled the newpartsarray format.Solution
Updated
convertDbMessagesToUIMessagesto handle both formats:partsarray (current standard)Legacy field mappings:
body→ text partthinkingContent→ reasoning partstreamChunks→ combined into text/reasoning parts based onisThinkingflagmessageType→ role (fallback for missingrolefield)timestamp→ createdAt (fallback for_creationTime)Testing
Impact
This ensures all historical chat messages are displayed correctly in the UI, regardless of which format they were stored in.
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