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docs(systems): document federation call state machine hardening

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Jannis Braun
2026-04-23 23:23:06 +02:00
parent 6a5b02b1a0
commit 1719e6d580
4 changed files with 25 additions and 8 deletions
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docs/systems/dm-system.md
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@@ -283,7 +283,7 @@ If a `member_add` federation event arrives for a soft-deleted channel (non-null
**Request:** `{ content?: string, attachments?: string[], replyToId?: string }`
**Cross-instance access:** Federated users (those with `homeInstance` set) can send messages on any DM channel where they are a member, regardless of which instance serves the request. The `requireLocalUser` gate that previously blocked federated users from DM write endpoints has been removed. DM calls work across federated instances. The caller's instance hosts the LiveKit room; remote clients connect directly. Call signaling is relayed to all active federation peers via synchronous HTTP POST (not the outbox worker). See `docs/systems/voice.md` for the full federated call architecture.
**Cross-instance access:** Federated users (those with `homeInstance` set) can send messages on any DM channel where they are a member, regardless of which instance serves the request. The `requireLocalUser` gate that previously blocked federated users from DM write endpoints has been removed. DM calls work across federated instances. The caller's instance hosts the LiveKit room; remote clients connect directly. Call signaling is relayed to all active federation peers via synchronous HTTP POST (not the outbox worker). Relay failures at any call state transition emit `dm_call_undeliverable { phase, terminal, failures }` to the originator — see `docs/systems/voice.md` for the full call state machine and failure surface.
**Validation:**
- Caller must be a member (`isDmMember`)