From 1a5b5ea02909e6c176ebd85d395e47fe15fcdba0 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Sat, 7 Nov 2026 22:35:21 +0100
Subject: remake: replays keep their writers

A remake's replay writes each value as the user who wrote it,
splitting where several users wrote under a path, so replays are
judged as the original writes.

Auth plan M6 (remakes, 2.4).
---
 src/remake/switch.rs | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

(limited to 'src/remake/switch.rs')

diff --git a/src/remake/switch.rs b/src/remake/switch.rs
index 4c72b39..dd08b38 100644
--- a/src/remake/switch.rs
+++ b/src/remake/switch.rs
@@ -216,6 +216,7 @@ async fn switch<H: Host>(
     let actor = ActorId::random();
     host.remake().add_own_actor(actor.clone());
     let new_actor = actor.clone();
+    let node = host.node_id();
 
     // 2. Build (or reuse), verify and replay without holding any lock.
     let (new_doc, copy_heads, mut stats) = tokio::task::spawn_blocking(
@@ -233,8 +234,9 @@ async fn switch<H: Host>(
                 ));
             }
 
-            // A fresh actor: this node's writes in the new epoch.
+            // A fresh actor: this node's writes in the new epoch, made by it.
             let mut doc = snapshot.doc.with_actor(actor);
+            crate::document::replica::authored(&mut doc, &node);
 
             let heads = copy.get_heads();
 
@@ -248,8 +250,15 @@ async fn switch<H: Host>(
             }
 
             // Each write at the time it was made, so later replays judge by it.
-            let stats =
-                delta::replay_newest(&copy, &base, &heads, &mut doc, &translator, superseded);
+            let stats = delta::replay_newest(
+                &copy,
+                &base,
+                &heads,
+                &mut doc,
+                &node,
+                &translator,
+                superseded,
+            );
             Ok((doc, heads, stats))
         },
     )
@@ -302,6 +311,7 @@ pub(super) async fn swap_in<H: Host>(
     translator: Translator,
 ) -> Result<(Document, ReplayStats), String> {
     let superseded = host.superseded();
+    let node = host.node_id();
     // The closure runs on the blocking pool; its replay numbers come back through this.
     let late_stats = std::sync::Arc::new(std::sync::Mutex::new(ReplayStats::default()));
     let late_out = std::sync::Arc::clone(&late_stats);
@@ -318,6 +328,7 @@ pub(super) async fn swap_in<H: Host>(
                 &copy_heads,
                 &live_heads,
                 &mut new_doc,
+                &node,
                 &translator,
                 superseded,
             );
-- 
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