diff --git a/ui/src/components/session/sidebar/SessionNodeItem.tsx b/ui/src/components/session/sidebar/SessionNodeItem.tsx
index 83f5f95..2cd9067 100644
--- a/ui/src/components/session/sidebar/SessionNodeItem.tsx
+++ b/ui/src/components/session/sidebar/SessionNodeItem.tsx
@@ -14,6 +14,7 @@ import { Tooltip, TooltipContent, TooltipTrigger } from '@/components/ui/tooltip
 import { GridLoader } from '@/components/ui/grid-loader';
 import {
   RiAddLine,
+  RiArchiveLine,
   RiArrowDownSLine,
   RiArrowRightSLine,
   RiChat4Line,
@@ -34,6 +35,8 @@ import {
   RiUnpinLine,
 } from '@remixicon/react';
 import { cn } from '@/lib/utils';
+import { useSessionStore } from '@/stores/useSessionStore';
+import { toast } from '@/components/ui';
 import { DraggableSessionRow } from './sessionFolderDnd';
 import type { SessionNode, SessionSummaryMeta } from './types';
 import { formatSessionDateLabel, normalizePath, renderHighlightedText, resolveSessionDiffStats } from './utils';
@@ -159,6 +162,99 @@ export function SessionNodeItem(props: Props): React.ReactNode {
   const sessionSummary = session.summary as SessionSummaryMeta | undefined;
   const sessionDiffStats = resolveSessionDiffStats(sessionSummary);
 
+  const archiveSessions = useSessionStore((state) => state.archiveSessions);
+  const sessionsByDirectory = useSessionStore((state) => state.sessionsByDirectory);
+  const deleteSessions = useSessionStore((state) => state.deleteSessions);
+  const archivedSessions = useSessionStore((state) => state.archivedSessions);
+
+  const handleArchiveOthers = React.useCallback(async () => {
+    if (!sessionDirectory) return;
+
+    const sessionsInDir = sessionsByDirectory.get(sessionDirectory) ?? [];
+    const otherSessions = sessionsInDir.filter(s => s.id !== session.id && !s.time?.archived);
+    const ids = otherSessions.map(s => s.id);
+
+    if (ids.length === 0) {
+      toast.message('No other sessions to archive in this directory');
+      return;
+    }
+
+    const result = await archiveSessions(ids, { silent: true });
+    if (result.archivedIds.length > 0) {
+      toast.success(`Archived ${result.archivedIds.length} session${result.archivedIds.length === 1 ? '' : 's'}`);
+    }
+    if (result.failedIds.length > 0) {
+      toast.error(`Failed to archive ${result.failedIds.length} session${result.failedIds.length === 1 ? '' : 's'}`);
+    }
+  }, [sessionDirectory, session.id, sessionsByDirectory, archiveSessions]);
+
+  const handleArchiveAll = React.useCallback(async () => {
+    if (!sessionDirectory) return;
+
+    const sessionsInDir = sessionsByDirectory.get(sessionDirectory) ?? [];
+    const allSessions = sessionsInDir.filter(s => !s.time?.archived);
+    const ids = allSessions.map(s => s.id);
+
+    if (ids.length === 0) {
+      toast.message('No sessions to archive in this directory');
+      return;
+    }
+
+    const result = await archiveSessions(ids, { silent: true });
+    if (result.archivedIds.length > 0) {
+      toast.success(`Archived ${result.archivedIds.length} session${result.archivedIds.length === 1 ? '' : 's'}`);
+    }
+    if (result.failedIds.length > 0) {
+      toast.error(`Failed to archive ${result.failedIds.length} session${result.failedIds.length === 1 ? '' : 's'}`);
+    }
+  }, [sessionDirectory, sessionsByDirectory, archiveSessions]);
+
+  const handleDeleteOthers = React.useCallback(async () => {
+    if (!sessionDirectory) return;
+
+    const otherSessions = archivedSessions.filter(s => {
+      const sessionDir = normalizePath((s as Session & { directory?: string | null }).directory ?? null);
+      return sessionDir === sessionDirectory && s.id !== session.id;
+    });
+    const ids = otherSessions.map(s => s.id);
+
+    if (ids.length === 0) {
+      toast.message('No other sessions to delete in this directory');
+      return;
+    }
+
+    const result = await deleteSessions(ids, { silent: true });
+    if (result.deletedIds.length > 0) {
+      toast.success(`Deleted ${result.deletedIds.length} session${result.deletedIds.length === 1 ? '' : 's'}`);
+    }
+    if (result.failedIds.length > 0) {
+      toast.error(`Failed to delete ${result.failedIds.length} session${result.failedIds.length === 1 ? '' : 's'}`);
+    }
+  }, [sessionDirectory, session.id, archivedSessions, deleteSessions]);
+
+  const handleDeleteAll = React.useCallback(async () => {
+    if (!sessionDirectory) return;
+
+    const allSessions = archivedSessions.filter(s => {
+      const sessionDir = normalizePath((s as Session & { directory?: string | null }).directory ?? null);
+      return sessionDir === sessionDirectory;
+    });
+    const ids = allSessions.map(s => s.id);
+
+    if (ids.length === 0) {
+      toast.message('No sessions to delete in this directory');
+      return;
+    }
+
+    const result = await deleteSessions(ids, { silent: true });
+    if (result.deletedIds.length > 0) {
+      toast.success(`Deleted ${result.deletedIds.length} session${result.deletedIds.length === 1 ? '' : 's'}`);
+    }
+    if (result.failedIds.length > 0) {
+      toast.error(`Failed to delete ${result.failedIds.length} session${result.failedIds.length === 1 ? '' : 's'}`);
+    }
+  }, [sessionDirectory, archivedSessions, deleteSessions]);
+
   if (editingId === session.id) {
     return (
       <div
@@ -481,6 +577,32 @@ export function SessionNodeItem(props: Props): React.ReactNode {
                   </DropdownMenuItem>
 
                   <DropdownMenuSeparator />
+                  {!archivedBucket && (
+                    <>
+                      <DropdownMenuItem onClick={handleArchiveOthers}>
+                        <RiArchiveLine className="mr-1 h-4 w-4" />
+                        Archive Others
+                      </DropdownMenuItem>
+                      <DropdownMenuItem onClick={handleArchiveAll}>
+                        <RiArchiveLine className="mr-1 h-4 w-4" />
+                        Archive All
+                      </DropdownMenuItem>
+                      <DropdownMenuSeparator />
+                    </>
+                  )}
+                  {archivedBucket && (
+                    <>
+                      <DropdownMenuItem onClick={handleDeleteOthers}>
+                        <RiDeleteBinLine className="mr-1 h-4 w-4" />
+                        Delete Others
+                      </DropdownMenuItem>
+                      <DropdownMenuItem onClick={handleDeleteAll}>
+                        <RiDeleteBinLine className="mr-1 h-4 w-4" />
+                        Delete All
+                      </DropdownMenuItem>
+                      <DropdownMenuSeparator />
+                    </>
+                  )}
                   <DropdownMenuItem className="text-destructive focus:text-destructive [&>svg]:mr-1" onClick={() => handleDeleteSession(session, { archivedBucket })}>
                     <RiDeleteBinLine className="mr-1 h-4 w-4" />
                     {archivedBucket ? 'Delete' : 'Archive'}