fix(opencode): order replay rows by creation time

packages/opencode/src/cli/cmd/run/runtime.ts

@@ -365,7 +365,7 @@ async function runInteractiveRuntime(input: RunRuntimeInput, deps: RunRuntimeDep
   })
   const footer = shell.footer
   const rememberLocal = (commit: StreamCommit, after?: LocalReplayAnchor) => {
-    state.localRows = [...state.localRows, { commit, after }].slice(-LOCAL_REPLAY_ROW_LIMIT)
+    state.localRows = [...state.localRows, { commit, after, created: Date.now() }].slice(-LOCAL_REPLAY_ROW_LIMIT)
   }
 
   const loadCatalog = async (): Promise<void> => {

packages/opencode/src/cli/cmd/run/session-replay.ts

@@ -266,7 +266,7 @@ export function replayLocalRows(
   rows: LocalReplayRow[],
 ): StreamCommit[] {
   const persisted = new Set(messages.map((message) => message.info.id))
-  return rows.reduce((out, local) => {
+  return rows.reduce((out, local, index) => {
     const row = local.commit
     if (row.kind === "user" && row.messageID && persisted.has(row.messageID)) {
       return out
@@ -317,12 +317,35 @@ export function replayLocalRows(
       return [...out.slice(0, after + 1), row, ...out.slice(after + 1)]
     }
 
-    const before = out.findIndex((commit) => commit.messageID && row.messageID! < commit.messageID)
-    if (before === -1) {
-      return [...out, row]
+    const nextAnchor = rows
+      .slice(index + 1)
+      .find((next) => next.commit.messageID === row.messageID && next.after)?.after
+    if (nextAnchor) {
+      const before = out.findIndex((commit) =>
+        nextAnchor.partID
+          ? commit.partID === nextAnchor.partID
+          : commit.kind === nextAnchor.kind && commit.messageID === nextAnchor.messageID,
+      )
+      if (before !== -1) return [...out.slice(0, before), row, ...out.slice(before)]
     }
 
-    return [...out.slice(0, before), row, ...out.slice(before)]
+    if (local.created !== undefined) {
+      const created = local.created
+      const messageID = row.messageID
+      const later = new Set(
+        messages
+          .filter(
+            (message) =>
+              message.info.time.created > created ||
+              (message.info.time.created === created && message.info.id.localeCompare(messageID) > 0),
+          )
+          .map((message) => message.info.id),
+      )
+      const before = out.findIndex((commit) => commit.messageID && later.has(commit.messageID))
+      if (before !== -1) return [...out.slice(0, before), row, ...out.slice(before)]
+    }
+
+    return [...out, row]
   }, commits)
 }
 

packages/opencode/src/cli/cmd/run/types.ts

@@ -332,6 +332,7 @@ export type LocalReplayAnchor = {
 export type LocalReplayRow = {
   commit: StreamCommit
   after?: LocalReplayAnchor
+  created?: number
 }
 
 // The public contract between the stream transport / prompt queue and

packages/opencode/test/cli/run/session-replay.test.ts

@@ -416,7 +416,14 @@ describe("run session replay", () => {
     } as const
 
     expect(
-      replayLocalRows([userMessage("msg-user-2", "successful")], [persisted], [{ commit: failed }, { commit: error }]),
+      replayLocalRows(
+        [userMessage("msg-user-2", "successful")],
+        [persisted],
+        [
+          { commit: failed, created: 0 },
+          { commit: error, created: 0 },
+        ],
+      ),
     ).toEqual([failed, error, persisted])
   })
 
@@ -657,35 +664,35 @@ describe("run session replay", () => {
     ).toEqual([prompt, running, error, completed])
   })
 
-  test("retains an unpersisted local diagnostic before later persisted prompts", () => {
+  test("appends an unanchored local diagnostic without inferring chronology from message IDs", () => {
     const first = {
       kind: "user",
       text: "before",
       phase: "start",
       source: "system",
-      messageID: "msg-user-1",
+      messageID: "msg-user-z",
     } as const
     const error = {
       kind: "error",
       text: "failed to start new session",
       phase: "start",
       source: "system",
-      messageID: "msg-user-2",
+      messageID: "msg-user-m",
     } as const
     const second = {
       kind: "user",
       text: "after",
       phase: "start",
       source: "system",
-      messageID: "msg-user-3",
+      messageID: "msg-user-a",
     } as const
 
     expect(
       replayLocalRows(
-        [userMessage("msg-user-1", "before"), userMessage("msg-user-3", "after")],
+        [userMessage("msg-user-z", "before"), userMessage("msg-user-a", "after")],
         [first, second],
         [{ commit: error }],
       ),
-    ).toEqual([first, error, second])
+    ).toEqual([first, second, error])
   })
 })