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feat: LWW timestamps for bidirectional federation profile & layout sync

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Profile and space layout changes on remote instances were being
overwritten by stale data on reconnect. Adds Last-Writer-Wins
timestamps so the client-relay mesh rejects stale writes:

- profile_updated_at column on users table with migration + backfill
- Server LWW guards on PATCH /users/@me and PUT /space-layout
- Bidirectional profileSync: pulls newer remote profiles to home
- LWW layout sync replaces home-authoritative _layoutFromTrueHome flag
- Layout pushes to ALL connected instances in parallel
This commit is contained in:
Jannis Braun
2026-03-12 18:28:37 +01:00
parent acbcf4d4e8
commit 83699d7e91
10 changed files with 294 additions and 115 deletions
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packages/shared/src/types.ts
+4 -2
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@@ -16,6 +16,7 @@ export interface User {
customStatus: string | null;
isAdmin: boolean;
isDeleted?: boolean;
profileUpdatedAt?: number;
createdAt: number;
homeInstance: string | null;
homeUserId: string | null;
@@ -271,7 +272,7 @@ export type ClientEvent =
// Server → Client Events
export type ServerEvent =
| { type: 'ready'; user: User; spaces: SpaceWithChannelsAndMembers[]; dmChannels: DmChannel[]; folders?: SpaceFolder[]; spaceLayout?: SpaceLayoutItem[] | null; voiceStates?: Record<string, string[]>; voiceUserStates?: Record<string, { isMuted: boolean; isDeafened: boolean; isCameraOn: boolean; isScreenSharing: boolean }>; readStates?: ReadState[]; activeCalls?: ActiveCallInfo[]; spaceVoiceStates?: Record<string, { spaceMuted: boolean; spaceDeafened: boolean }> }
| { type: 'ready'; user: User; spaces: SpaceWithChannelsAndMembers[]; dmChannels: DmChannel[]; folders?: SpaceFolder[]; spaceLayout?: SpaceLayoutItem[] | null; layoutUpdatedAt?: number; voiceStates?: Record<string, string[]>; voiceUserStates?: Record<string, { isMuted: boolean; isDeafened: boolean; isCameraOn: boolean; isScreenSharing: boolean }>; readStates?: ReadState[]; activeCalls?: ActiveCallInfo[]; spaceVoiceStates?: Record<string, { spaceMuted: boolean; spaceDeafened: boolean }> }
| { type: 'message_created'; message: MessageWithUser }
| { type: 'message_updated'; message: MessageWithUser }
| { type: 'message_deleted'; messageId: string; channelId: string }
@@ -317,7 +318,7 @@ export type ServerEvent =
| { type: 'category_updated'; category: ChannelCategory; spaceId: string }
| { type: 'category_deleted'; categoryId: string; spaceId: string }
| { type: 'channel_layout_updated'; spaceId: string; channels: Channel[]; categories: ChannelCategory[] }
| { type: 'space_layout_updated'; layout: SpaceLayoutItem[]; folders: SpaceFolder[] }
| { type: 'space_layout_updated'; layout: SpaceLayoutItem[]; folders: SpaceFolder[]; updatedAt?: number }
| { type: 'pong' }
| { type: 'error'; message: string };
@@ -385,6 +386,7 @@ export interface UpdateUserRequest {
status?: UserStatus;
replicatedInstances?: ReplicatedInstance[];
homeUserId?: string;
profileUpdatedAt?: number;
}
export interface UpdateMemberRequest {