diff --git a/assets/inject/renderer-inject.js b/assets/inject/renderer-inject.js
index 2cfec7715..5d5af207e 100644
--- a/assets/inject/renderer-inject.js
+++ b/assets/inject/renderer-inject.js
@@ -406,6 +406,7 @@
   const projectMoveRefreshDelaysMs = [50, 250, 750, 1500];
   const chatsSortRefreshIntervalMs = 1500;
   const chatsSortDbRefreshIntervalMs = 5000;
+  const provisionalThreadSortMs = new Map();
   const styleId = "codex-delete-style";
   const codexDeleteStyleVersion = "14";
   const codexPlusMenuId = "codex-plus-menu";
@@ -6758,7 +6759,14 @@
   }
 
   function sortMsForSession(sessionId, preferredValue) {
-    return numericTimestamp(preferredValue) || uuidV7TimestampMs(sessionId);
+    const preferredTimestamp = numericTimestamp(preferredValue);
+    if (preferredTimestamp) return preferredTimestamp;
+    const uuidTimestamp = uuidV7TimestampMs(sessionId);
+    if (uuidTimestamp) return uuidTimestamp;
+    const key = projectMoveSessionKey(sessionId);
+    if (!key.startsWith("client-new-thread:")) return 0;
+    if (!provisionalThreadSortMs.has(key)) provisionalThreadSortMs.set(key, Date.now());
+    return provisionalThreadSortMs.get(key) || 0;
   }
 
   function timestampMsFromPayload(payload) {
@@ -6990,6 +6998,27 @@
     return chatsSection()?.querySelector?.('[role="list"][aria-label="对话"], [role="list"]') || null;
   }
 
+  function threadListForRow(row) {
+    return row?.closest?.('[data-app-action-sidebar-project-list-id], [data-codex-project-move-injected-list="true"], [role="list"]') || null;
+  }
+
+  function visibleSidebarRows() {
+    return sessionRows(true).filter((row) => rowIsInChats(row) || !!closestProjectListItem(row));
+  }
+
+  function sidebarRowsByList(rows = visibleSidebarRows()) {
+    const groups = new Map();
+    rows.forEach((row) => {
+      const list = threadListForRow(row);
+      if (!list) return;
+      const item = rowListItem(row);
+      const group = groups.get(list) || [];
+      if (!group.some((entry) => rowListItem(entry) === item)) group.push(row);
+      groups.set(list, group);
+    });
+    return groups;
+  }
+
   function rowIsUnderTargetProject(row, target) {
     const item = closestProjectListItem(row);
     return !!item && projectItemMatchesTarget(item, target);
@@ -7385,7 +7414,7 @@
     return Array.from(list.children).map(threadRowFromListItem).filter(Boolean).filter((row) => rowIsInChats(row));
   }
 
-  function chatsSortNeedsCorrection(rows) {
+  function threadRowsNeedCorrection(rows) {
     let previousPinned = true;
     let previousSortMs = Infinity;
     let previousKey = "\uffff";
@@ -7408,12 +7437,8 @@
     return false;
   }
 
-  function reorderChatsRows(rows) {
-    const list = chatsThreadList();
-    if (!list || rows.length < 2) return;
-    const rowItems = new Set(rows.map(rowListItem));
-    const firstNonThreadItem = Array.from(list.children).find((child) => !rowItems.has(child) && !threadRowFromListItem(child));
-    const orderedRows = [...rows].sort((left, right) => {
+  function orderedThreadRows(rows) {
+    return [...rows].sort((left, right) => {
       const leftPinned = rowPinned(left);
       const rightPinned = rowPinned(right);
       if (leftPinned !== rightPinned) return leftPinned ? -1 : 1;
@@ -7424,31 +7449,48 @@
       if (leftSortMs !== rightSortMs) return rightSortMs - leftSortMs;
       return projectMoveSessionKey(rightRef.session_id).localeCompare(projectMoveSessionKey(leftRef.session_id));
     });
+  }
+
+  function reorderThreadRows(list, rows) {
+    if (!list || rows.length < 2) return;
+    const rowItems = new Set(rows.map(rowListItem));
+    const firstNonThreadItem = Array.from(list.children).find((child) => !rowItems.has(child) && !threadRowFromListItem(child));
+    const orderedRows = orderedThreadRows(rows);
     orderedRows.forEach((row) => list.insertBefore(rowListItem(row), firstNonThreadItem || null));
     cachedSessionRowsAt = 0;
   }
 
+  function sidebarSortSignature(groups = sidebarRowsByList()) {
+    return Array.from(groups.values())
+      .map((rows) => rows.map((row) => projectMoveSessionKey(sessionRefFromRow(row).session_id)).join("|"))
+      .join("||");
+  }
+
   async function applyChatsSortCorrection() {
     if (!codexPlusSettings().projectMove || chatsSortInFlight) return;
-    const rows = visibleChatsRows();
+    const rows = visibleSidebarRows();
     if (rows.length < 2) return;
+    const groups = sidebarRowsByList(rows);
     const refs = rows.map(sessionRefFromRow).filter((ref) => ref.session_id);
-    const signature = refs.map((ref) => projectMoveSessionKey(ref.session_id)).join("|");
+    const signature = sidebarSortSignature(groups);
     const allRowsHaveSortMs = rows.every((row) => numericTimestamp(row.dataset.codexProjectMoveSortMs || rowListItem(row).dataset.codexProjectMoveSortMs));
+    const needsCorrection = Array.from(groups.values()).some((group) => threadRowsNeedCorrection(group));
     const shouldRefreshSortKeys = signature !== chatsSortSignature || !allRowsHaveSortMs || Date.now() - chatsSortLastFetchAt > chatsSortDbRefreshIntervalMs;
-    if (!shouldRefreshSortKeys && !chatsSortNeedsCorrection(rows)) return;
+    if (!shouldRefreshSortKeys && !needsCorrection) return;
     chatsSortInFlight = true;
     try {
       if (shouldRefreshSortKeys) {
-        const result = await postJson("/thread-sort-keys", { sessions: refs }).catch(() => ({ status: "failed", sort_keys: [] }));
-        chatsSortLastFetchAt = Date.now();
         const byId = new Map();
-        if (result?.status === "ok" && Array.isArray(result?.sort_keys)) {
-          result.sort_keys.forEach((item) => {
-            const key = projectMoveSessionKey(String(item?.session_id || ""));
-            if (key) byId.set(key, item);
-          });
+        for (let start = 0; start < refs.length; start += 200) {
+          const result = await postJson("/thread-sort-keys", { sessions: refs.slice(start, start + 200) }).catch(() => ({ status: "failed", sort_keys: [] }));
+          if (result?.status === "ok" && Array.isArray(result?.sort_keys)) {
+            result.sort_keys.forEach((item) => {
+              const key = projectMoveSessionKey(String(item?.session_id || ""));
+              if (key) byId.set(key, item);
+            });
+          }
         }
+        chatsSortLastFetchAt = Date.now();
         rows.forEach((row) => {
           const ref = sessionRefFromRow(row);
           const payload = byId.get(projectMoveSessionKey(ref.session_id));
@@ -7459,8 +7501,10 @@
           if (trustedSortMs) updateRowTimeLabel(row, trustedSortMs);
         });
       }
-      if (chatsSortNeedsCorrection(rows)) reorderChatsRows(rows);
-      chatsSortSignature = visibleChatsRows().map((row) => projectMoveSessionKey(sessionRefFromRow(row).session_id)).join("|");
+      sidebarRowsByList(visibleSidebarRows()).forEach((group, list) => {
+        if (threadRowsNeedCorrection(group)) reorderThreadRows(list, group);
+      });
+      chatsSortSignature = sidebarSortSignature();
     } finally {
       chatsSortInFlight = false;
     }
@@ -10326,6 +10370,7 @@
   window.__codexProjectMoveReadProjection = readProjectMoveProjection;
   window.__codexProjectMoveTargets = projectMoveTargets;
   window.__codexProjectMoveSortChats = applyChatsSortCorrection;
+  window.__codexProjectMoveSortSidebar = applyChatsSortCorrection;
   window.removeEventListener("resize", window.__codexPlusResizeHandler);
   let codexPlusResizeRafId = 0;
   window.__codexPlusResizeHandler = () => {
diff --git a/crates/codex-plus-core/tests/cdp_bridge.rs b/crates/codex-plus-core/tests/cdp_bridge.rs
index 03025f736..c89dbc0ba 100644
--- a/crates/codex-plus-core/tests/cdp_bridge.rs
+++ b/crates/codex-plus-core/tests/cdp_bridge.rs
@@ -1514,6 +1514,23 @@ fn injection_script_moves_export_and_project_move_into_more_menu() {
     assert!(!script.contains("group.appendChild(moveButton)"));
 }
 
+#[test]
+fn injection_script_sorts_threads_within_each_sidebar_list() {
+    let script = assets::injection_script(57321);
+
+    assert!(script.contains("const provisionalThreadSortMs = new Map()"));
+    assert!(script.contains("client-new-thread:"));
+    assert!(script.contains("function threadListForRow"));
+    assert!(script.contains("function visibleSidebarRows"));
+    assert!(script.contains("function sidebarRowsByList"));
+    assert!(script.contains("function threadRowsNeedCorrection"));
+    assert!(script.contains("function orderedThreadRows"));
+    assert!(script.contains("function reorderThreadRows"));
+    assert!(script.contains("function sidebarSortSignature"));
+    assert!(script.contains("refs.slice(start, start + 200)"));
+    assert!(script.contains("window.__codexProjectMoveSortSidebar"));
+}
+
 #[test]
 fn injection_script_does_not_add_delete_controls_on_archived_page() {
     let script = assets::injection_script(57321);