fix: deduplicate message IDs in saveChat to prevent ON CONFLICT error

[ngoiyaeric]

Problem

When the AI state submit function builds messages, it uses a shared groupeId for multiple message types (response, resolution_search_result, related, followup), giving them all the same ID.

When onSetAIState calls saveChat, the batch insert hits:

ERROR: ON CONFLICT DO UPDATE command cannot affect row a second time (21000)

Fix

Before inserting, saveChat now scans for duplicate IDs within the batch and appends a unique suffix to any duplicates, ensuring every row in the INSERT has a distinct primary key.

Files Changed

• lib/actions/chat-db.ts — saveChat deduplication logic

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📥 Commits

Reviewing files that changed from the base of the PR and between de1c5c0 and b506e86.

📒 Files selected for processing (1)

• lib/actions/chat-db.ts

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