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Add single-writer ConversationStore core (additive)

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Per-conversation ObservableObjects with O(1) dedup via an incrementally
maintained message-ID index, binary-search timestamp insertion, folded
cap policies, a no-downgrade delivery rule, and a typed change subject.
All mutation flows through store intents (conversation mutators are
fileprivate). The previous store is renamed LegacyConversationStore
pending deletion in step 5. 16 behavioral tests including per-
conversation publish isolation; store.append benchmarks at ~144k
messages/sec.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
jack
2026-06-11 11:02:27 +02:00
co-authored by Claude Fable 5
parent 45650854e7
commit ac3a2f2d34
11 changed files with 919 additions and 37 deletions
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bitchat/App/ConversationUIModel.swift
+2 -2
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@@ -15,14 +15,14 @@ final class ConversationUIModel: ObservableObject {
private let chatViewModel: ChatViewModel
private let privateConversationModel: PrivateConversationModel
private let conversationStore: ConversationStore
private let conversationStore: LegacyConversationStore
private var activeChannel: ChannelID
private var cancellables = Set<AnyCancellable>()
init(
chatViewModel: ChatViewModel,
privateConversationModel: PrivateConversationModel,
conversationStore: ConversationStore
conversationStore: LegacyConversationStore
) {
self.chatViewModel = chatViewModel
self.privateConversationModel = privateConversationModel