feat(conversation): side conversation fork API#383
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June 8, 2026 17:03
Expose POST /api/conversations/:id/side to fork ephemeral side threads with hidden guardrail context, optional initial prompt, and cascade delete of ephemeral children when the parent is removed.
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Summary
Adds the backend side-conversation fork API used by AionUi's side dock.
This PR provides the backend primitive for creating and restoring side child conversations from a parent conversation, with server-selected fork strategy.
API
POST /api/conversations/{id}/sideCreates a new side child conversation.
Request body:
guardrail?initial_prompt?forked_at_msg_id?Response:
conversation_idcreated: truefork_mode:agent_forkortext_snapshotGET /api/conversations/{id}/sideLists existing side children for a parent conversation so the frontend can restore side tabs after reload.
Fork Policy
claude/opencode/vibeACP backends ->agent_forkcodex,aionrs, and ACP backends without declaredsession/fork->text_snapshotgeminiparent types are rejected by the backend and hidden by the frontendCompatibility
fork_modekeep the previous per-turn enrich path.Related Frontend PR
iOfficeAI/AionUi#3196
Testing
cargo fmt --allcargo check --workspacecargo test -p aionui-ai-agent --libcargo test -p aionui-conversation -p aionui-dbcodex->text_snapshotaionrs->text_snapshotclaude->agent_forkopenclawskipped locally because the copied dev DB had no OpenClaw parent conversation