Function appendOptimisticMessage

web/src/lib/message-window-store.ts:1010–1022

(sessionId: string, message: DecryptedMessage)

}

export function appendOptimisticMessage(sessionId: string, message: DecryptedMessage): void {
    updateState(sessionId, (prev) => {
        const merged = mergeMessages(prev.messages, [message])
        const { kept, dropped } = trimVisibleWithDropped(merged, 'append')
        const pending = filterPendingAgainstVisible(prev.pending, kept)
        return buildState(prev, {
            messages: kept,
            pending,
            atBottom: true,
            ...cursorUpdatesAfterAppendTrim(kept, dropped)
        })
    }, true)
}

export function updateMessageStatus(sessionId: string, localId: string, status: MessageStatus): void {
    if (!localId) {