fix: integrate handleChatCompletion to save chat memories

[sweetmantech]

Summary

• Integrates handleChatCompletion into handleChatStream and handleChatGenerate to properly save chat memories
• The function was fully implemented but never called, causing memories to not be persisted to the database
• Fixes the bug where conversations appear empty when users return to them

Root Cause

The handleChatCompletion function at lib/chat/handleChatCompletion.ts was implemented with:

• Room creation for new conversations
• Memory storage for user and assistant messages via upsertMemory
• New conversation notifications

However, both handleChatStream.ts and handleChatGenerate.ts had TODO comments but never actually called the function:

// Note: Credit handling and chat completion handling will be added
// as part of the handleChatCredits and handleChatCompletion migrations

Changes

• Added handleChatCompletion call in handleChatStream.ts after streaming completes
• Added handleChatCompletion call in handleChatGenerate.ts after text generation
• Added comprehensive tests for the integration (following red-green-refactor)

Test plan

• All existing tests pass (215 tests)
• New tests verify handleChatCompletion is called with correct parameters
• Tests verify graceful error handling (completion failures don't break chat response)

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Review	Updated (UTC)
recoup-api	Ready	Preview	Jan 16, 2026 8:59pm

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}