feat: let a channel attach File RAG attachments to the answer #675 - #678
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New `attachmentsTarget` option on the File RAG tool details: `stage` (default, today's behavior) keeps the attachments on the tool-result stage, `choice` moves them to the assistant message. The answer itself always stays on the stage, and `attachmentUrlOverride` applies either way. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Fedir-Yatsenko
added
enhancement
Fedir-Yatsenko
enabled auto-merge (squash)
September 16, 2026 11:28
kryachkow
approved these changes
Sep 16, 2026
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Description of changes
Adds an
attachmentsTargetoption to the File RAG tool details, so a channel can decide where the documents the RAG cites are attached:stage(default) — the tool-result stage, exactly as today.choice— the assistant message, next to the answer the user is reading.The destination is exclusive:
choicemoves the attachments rather than duplicating them. The RAG answer itself always goes to the stage whichever value is set,attachmentUrlOverridekeeps applying either way, and the attachments are still emitted once after the RAG stream finishes, so the emit timing is unchanged. Both RAG versions pick this up, sinceGENERICreuses theDIALstreaming flow._append_attachmentsnow takes the sink instead of hardcoding aStage, and a small_attachments_sinkhelper resolves it from the config at the single call site.Channels that do not set the field behave identically to today, and channel config is stored as JSON, so no migration is needed.
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