From 335a426982a276024512ba7ce2fd7fd94f4983bc Mon Sep 17 00:00:00 2001
From: Wes <wesbillman@users.noreply.github.com>
Date: Mon, 6 Apr 2026 15:43:51 -0700
Subject: [PATCH] Polish members sidebar UX and clean up orphaned agents (#252)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 .../src-tauri/src/managed_agents/runtime.rs   |  54 ++-
 .../features/channels/cleanupChannelAgents.ts |  88 ++--
 desktop/src/features/channels/hooks.ts        |  86 +---
 .../src/features/channels/lib/channelCache.ts |  66 +++
 .../src/features/channels/lib/memberUtils.ts  |  42 ++
 .../channels/lib/useClassifiedMembers.ts      |  72 +++
 .../channels/ui/ChannelManagementSheet.tsx    | 417 ++++++------------
 .../channels/ui/ChannelMemberInviteCard.tsx   | 180 +++++---
 .../channels/ui/ChannelMembersBar.tsx         |  78 +---
 .../features/channels/ui/ChannelScreen.tsx    |  10 +
 .../features/channels/ui/MembersSidebar.tsx   | 226 ++++++++++
 .../channels/useLiveChannelUpdates.ts         |   6 +-
 desktop/src/features/messages/hooks.ts        |   2 +-
 desktop/tests/e2e/channels.spec.ts            | 155 ++++++-
 14 files changed, 934 insertions(+), 548 deletions(-)
 create mode 100644 desktop/src/features/channels/lib/channelCache.ts
 create mode 100644 desktop/src/features/channels/lib/memberUtils.ts
 create mode 100644 desktop/src/features/channels/lib/useClassifiedMembers.ts
 create mode 100644 desktop/src/features/channels/ui/MembersSidebar.tsx

diff --git a/desktop/src-tauri/src/managed_agents/runtime.rs b/desktop/src-tauri/src/managed_agents/runtime.rs
index 0fe5e7125..37ad92772 100644
--- a/desktop/src-tauri/src/managed_agents/runtime.rs
+++ b/desktop/src-tauri/src/managed_agents/runtime.rs
@@ -110,22 +110,47 @@ pub(crate) fn process_belongs_to_us(_pid: u32) -> bool {
 }
 
 #[cfg(unix)]
-pub(crate) fn terminate_process(pid: u32) -> Result<(), String> {
-    // The child was spawned with process_group(0), so pid == pgid.
-    // Kill the entire process group to avoid orphaning MCP servers
-    // and agent subprocesses.
+fn signal_process_group_or_leader(pid: u32, signal: i32, action: &str) -> Result<(), String> {
     let pgid = -(pid as i32);
 
-    // Try graceful shutdown first (SIGTERM to the group).
-    if unsafe { libc::kill(pgid, libc::SIGTERM) } != 0 {
-        // ESRCH means the process is already gone — that's fine.
-        let err = std::io::Error::last_os_error();
-        if err.raw_os_error() != Some(libc::ESRCH) && process_is_running(pid) {
-            return Err(format!("failed to terminate process group {pid}: {err}"));
-        }
+    if unsafe { libc::kill(pgid, signal) } == 0 {
         return Ok(());
     }
 
+    let group_err = std::io::Error::last_os_error();
+    if !process_is_running(pid) {
+        return Ok(());
+    }
+
+    // Some local agent trees can no longer be signalled as a process group
+    // (for example if the leader changed groups, or macOS returns EPERM for one
+    // descendant). Fall back to the leader PID so stop/delete can still recover.
+    if matches!(
+        group_err.raw_os_error(),
+        Some(libc::EPERM) | Some(libc::ESRCH)
+    ) {
+        if unsafe { libc::kill(pid as i32, signal) } == 0 {
+            return Ok(());
+        }
+
+        let leader_err = std::io::Error::last_os_error();
+        if leader_err.raw_os_error() == Some(libc::ESRCH) || !process_is_running(pid) {
+            return Ok(());
+        }
+
+        return Err(format!("failed to {action} process {pid}: {leader_err}"));
+    }
+
+    Err(format!(
+        "failed to {action} process group {pid}: {group_err}"
+    ))
+}
+
+#[cfg(unix)]
+pub(crate) fn terminate_process(pid: u32) -> Result<(), String> {
+    // Try graceful shutdown first (SIGTERM to the group).
+    signal_process_group_or_leader(pid, libc::SIGTERM, "terminate")?;
+
     // Wait up to 1s for graceful exit.
     for _ in 0..10 {
         if !process_is_running(pid) {
@@ -135,12 +160,7 @@ pub(crate) fn terminate_process(pid: u32) -> Result<(), String> {
     }
 
     // Escalate to SIGKILL on the entire group.
-    if unsafe { libc::kill(pgid, libc::SIGKILL) } != 0 {
-        let err = std::io::Error::last_os_error();
-        if err.raw_os_error() != Some(libc::ESRCH) && process_is_running(pid) {
-            return Err(format!("failed to kill process group {pid}: {err}"));
-        }
-    }
+    signal_process_group_or_leader(pid, libc::SIGKILL, "kill")?;
 
     Ok(())
 }
diff --git a/desktop/src/features/channels/cleanupChannelAgents.ts b/desktop/src/features/channels/cleanupChannelAgents.ts
index 9fce5ba8f..3c01d6b2e 100644
--- a/desktop/src/features/channels/cleanupChannelAgents.ts
+++ b/desktop/src/features/channels/cleanupChannelAgents.ts
@@ -1,9 +1,9 @@
 /**
- * Best-effort cleanup of managed agents when a channel is deleted.
+ * Best-effort cleanup of channel-scoped managed agents.
  *
- * Each agent added via the "Add agents" dialog is a unique process scoped to
- * the channel. When the channel is deleted these orphaned agents should be
- * removed — but only if they are not members of any other channel.
+ * Each agent added via the "Add agents" dialog is a dedicated managed-agent
+ * record. If that agent is no longer present in any channel, the managed-agent
+ * record should be removed as well.
  */
 import {
   deleteManagedAgent,
@@ -12,40 +12,66 @@ import {
   listRelayAgents,
 } from "@/shared/api/tauri";
 
-export async function cleanupChannelAgents(channelId: string): Promise<void> {
-  const [members, managedAgents, relayAgents] = await Promise.all([
-    getChannelMembers(channelId),
+async function cleanupManagedAgentsByPubkey(
+  pubkeys: readonly string[],
+  options?: { ignoreChannelId?: string },
+): Promise<void> {
+  const normalizedPubkeys = new Set(
+    pubkeys
+      .map((pubkey) => pubkey.trim().toLowerCase())
+      .filter((pubkey) => pubkey.length > 0),
+  );
+
+  if (normalizedPubkeys.size === 0) {
+    return;
+  }
+
+  const [managedAgents, relayAgents] = await Promise.all([
     listManagedAgents(),
     listRelayAgents(),
   ]);
 
-  const memberPubkeys = new Set(
-    members.map((member) => member.pubkey.toLowerCase()),
+  const agentsToDelete = managedAgents.filter((agent) =>
+    normalizedPubkeys.has(agent.pubkey.toLowerCase()),
   );
 
-  // Find managed agents that are members of this channel.
-  const agentsInChannel = managedAgents.filter((agent) =>
-    memberPubkeys.has(agent.pubkey.toLowerCase()),
-  );
-
-  // Only delete agents that are NOT members of any other channel.
-  const agentsToDelete = agentsInChannel.filter((agent) => {
-    const relayAgent = relayAgents.find(
-      (ra) => ra.pubkey.toLowerCase() === agent.pubkey.toLowerCase(),
-    );
-    if (!relayAgent) {
-      // Not found in relay — safe to delete.
-      return true;
-    }
-    // Only delete if this is the agent's only channel.
-    const otherChannels = relayAgent.channelIds.filter(
-      (id) => id !== channelId,
-    );
-    return otherChannels.length === 0;
-  });
-
   // Delete orphaned agents (best-effort — don't block channel deletion).
   await Promise.allSettled(
-    agentsToDelete.map((agent) => deleteManagedAgent(agent.pubkey)),
+    agentsToDelete
+      .filter((agent) => {
+        const relayAgent = relayAgents.find(
+          (candidate) =>
+            candidate.pubkey.toLowerCase() === agent.pubkey.toLowerCase(),
+        );
+        if (!relayAgent) {
+          // Not found in relay — safe to delete.
+          return true;
+        }
+
+        const activeChannelIds = relayAgent.channelIds.filter(
+          (channelId) => channelId !== options?.ignoreChannelId,
+        );
+        return activeChannelIds.length === 0;
+      })
+      .map((agent) => deleteManagedAgent(agent.pubkey)),
+  );
+}
+
+export async function cleanupManagedAgentIfOrphaned(
+  pubkey: string,
+  channelId?: string,
+): Promise<void> {
+  await cleanupManagedAgentsByPubkey([pubkey], {
+    ignoreChannelId: channelId,
+  });
+}
+
+export async function cleanupChannelAgents(channelId: string): Promise<void> {
+  const members = await getChannelMembers(channelId);
+  await cleanupManagedAgentsByPubkey(
+    members.map((member) => member.pubkey),
+    {
+      ignoreChannelId: channelId,
+    },
   );
 }
diff --git a/desktop/src/features/channels/hooks.ts b/desktop/src/features/channels/hooks.ts
index 89e4bad3d..12aea3d87 100644
--- a/desktop/src/features/channels/hooks.ts
+++ b/desktop/src/features/channels/hooks.ts
@@ -1,10 +1,5 @@
 import * as React from "react";
-import {
-  useMutation,
-  useQuery,
-  useQueryClient,
-  type QueryClient,
-} from "@tanstack/react-query";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 
 import {
   addChannelMembers,
@@ -26,7 +21,10 @@ import {
   unarchiveChannel,
   updateChannel,
 } from "@/shared/api/tauri";
-import { cleanupChannelAgents } from "@/features/channels/cleanupChannelAgents";
+import {
+  cleanupChannelAgents,
+  cleanupManagedAgentIfOrphaned,
+} from "@/features/channels/cleanupChannelAgents";
 import type {
   AddChannelMembersInput,
   Channel,
@@ -68,68 +66,6 @@ function sortChannels(channels: Channel[]) {
   });
 }
 
-function parseTimestamp(value: string | null | undefined) {
-  if (!value) {
-    return null;
-  }
-
-  const timestamp = Date.parse(value);
-  return Number.isNaN(timestamp) ? null : timestamp;
-}
-
-function isNewerTimestamp(
-  candidate: string | null | undefined,
-  current: string | null | undefined,
-) {
-  const candidateTimestamp = parseTimestamp(candidate);
-  if (candidateTimestamp === null) {
-    return false;
-  }
-
-  const currentTimestamp = parseTimestamp(current);
-  return currentTimestamp === null || candidateTimestamp > currentTimestamp;
-}
-
-export function updateChannelLastMessageAt(
-  queryClient: QueryClient,
-  channelId: string,
-  lastMessageAt: string | null | undefined,
-) {
-  const lastMessageTimestamp = parseTimestamp(lastMessageAt);
-  const normalizedLastMessageAt =
-    lastMessageTimestamp === null
-      ? null
-      : new Date(lastMessageTimestamp).toISOString();
-
-  if (!normalizedLastMessageAt) {
-    return;
-  }
-
-  queryClient.setQueryData<Channel[]>(channelsQueryKey, (current) => {
-    if (!current) {
-      return current;
-    }
-
-    let didUpdate = false;
-    const nextChannels = current.map((channel) => {
-      if (
-        channel.id !== channelId ||
-        !isNewerTimestamp(normalizedLastMessageAt, channel.lastMessageAt)
-      ) {
-        return channel;
-      }
-
-      didUpdate = true;
-      return {
-        ...channel,
-        lastMessageAt: normalizedLastMessageAt,
-      };
-    });
-
-    return didUpdate ? nextChannels : current;
-  });
-}
-
 async function invalidateChannelState(
   queryClient: ReturnType<typeof useQueryClient>,
   channelId: string | null | undefined,
@@ -430,9 +366,19 @@ export function useRemoveChannelMemberMutation(channelId: string | null) {
       }
 
       await removeChannelMember(channelId, pubkey);
+
+      try {
+        await cleanupManagedAgentIfOrphaned(pubkey, channelId);
+      } catch (error) {
+        console.warn("Failed to clean up managed agent:", error);
+      }
     },
     onSettled: async () => {
-      await invalidateChannelState(queryClient, channelId);
+      await Promise.all([
+        invalidateChannelState(queryClient, channelId),
+        queryClient.invalidateQueries({ queryKey: ["managed-agents"] }),
+        queryClient.invalidateQueries({ queryKey: ["relay-agents"] }),
+      ]);
     },
   });
 }
diff --git a/desktop/src/features/channels/lib/channelCache.ts b/desktop/src/features/channels/lib/channelCache.ts
new file mode 100644
index 000000000..340854953
--- /dev/null
+++ b/desktop/src/features/channels/lib/channelCache.ts
@@ -0,0 +1,66 @@
+import type { QueryClient } from "@tanstack/react-query";
+
+import type { Channel } from "@/shared/api/types";
+import { channelsQueryKey } from "@/features/channels/hooks";
+
+function parseTimestamp(value: string | null | undefined) {
+  if (!value) {
+    return null;
+  }
+
+  const timestamp = Date.parse(value);
+  return Number.isNaN(timestamp) ? null : timestamp;
+}
+
+function isNewerTimestamp(
+  candidate: string | null | undefined,
+  current: string | null | undefined,
+) {
+  const candidateTimestamp = parseTimestamp(candidate);
+  if (candidateTimestamp === null) {
+    return false;
+  }
+
+  const currentTimestamp = parseTimestamp(current);
+  return currentTimestamp === null || candidateTimestamp > currentTimestamp;
+}
+
+export function updateChannelLastMessageAt(
+  queryClient: QueryClient,
+  channelId: string,
+  lastMessageAt: string | null | undefined,
+) {
+  const lastMessageTimestamp = parseTimestamp(lastMessageAt);
+  const normalizedLastMessageAt =
+    lastMessageTimestamp === null
+      ? null
+      : new Date(lastMessageTimestamp).toISOString();
+
+  if (!normalizedLastMessageAt) {
+    return;
+  }
+
+  queryClient.setQueryData<Channel[]>(channelsQueryKey, (current) => {
+    if (!current) {
+      return current;
+    }
+
+    let didUpdate = false;
+    const nextChannels = current.map((channel) => {
+      if (
+        channel.id !== channelId ||
+        !isNewerTimestamp(normalizedLastMessageAt, channel.lastMessageAt)
+      ) {
+        return channel;
+      }
+
+      didUpdate = true;
+      return {
+        ...channel,
+        lastMessageAt: normalizedLastMessageAt,
+      };
+    });
+
+    return didUpdate ? nextChannels : current;
+  });
+}
diff --git a/desktop/src/features/channels/lib/memberUtils.ts b/desktop/src/features/channels/lib/memberUtils.ts
new file mode 100644
index 000000000..1834f46d7
--- /dev/null
+++ b/desktop/src/features/channels/lib/memberUtils.ts
@@ -0,0 +1,42 @@
+import type { ChannelMember } from "@/shared/api/types";
+
+export const roleOrder: Record<ChannelMember["role"], number> = {
+  owner: 0,
+  admin: 1,
+  member: 2,
+  guest: 3,
+  bot: 4,
+};
+
+export function formatPubkey(pubkey: string) {
+  return `${pubkey.slice(0, 8)}\u2026${pubkey.slice(-4)}`;
+}
+
+export function formatMemberName(
+  member: ChannelMember,
+  currentPubkey?: string,
+) {
+  if (currentPubkey && member.pubkey === currentPubkey) {
+    return "You";
+  }
+
+  return member.displayName ?? formatPubkey(member.pubkey);
+}
+
+export function compareMembersByRole(
+  left: ChannelMember,
+  right: ChannelMember,
+  currentPubkey?: string,
+): number {
+  if (currentPubkey && left.pubkey === currentPubkey) {
+    return -1;
+  }
+  if (currentPubkey && right.pubkey === currentPubkey) {
+    return 1;
+  }
+  const roleDelta = roleOrder[left.role] - roleOrder[right.role];
+  if (roleDelta !== 0) {
+    return roleDelta;
+  }
+  return formatMemberName(left).localeCompare(formatMemberName(right));
+}
diff --git a/desktop/src/features/channels/lib/useClassifiedMembers.ts b/desktop/src/features/channels/lib/useClassifiedMembers.ts
new file mode 100644
index 000000000..00a3af09a
--- /dev/null
+++ b/desktop/src/features/channels/lib/useClassifiedMembers.ts
@@ -0,0 +1,72 @@
+import * as React from "react";
+
+import {
+  useManagedAgentsQuery,
+  useRelayAgentsQuery,
+} from "@/features/agents/hooks";
+import type { ChannelMember } from "@/shared/api/types";
+import { normalizePubkey } from "@/shared/lib/pubkey";
+
+import { compareMembersByRole } from "./memberUtils";
+
+export function useClassifiedMembers(
+  members: ChannelMember[],
+  currentPubkey?: string,
+) {
+  const managedAgentsQuery = useManagedAgentsQuery();
+  const relayAgentsQuery = useRelayAgentsQuery();
+
+  const managedAgents = managedAgentsQuery.data ?? [];
+  const relayAgents = relayAgentsQuery.data ?? [];
+
+  const managedAgentPubkeys = React.useMemo(
+    () => new Set(managedAgents.map((agent) => normalizePubkey(agent.pubkey))),
+    [managedAgents],
+  );
+  const relayAgentPubkeys = React.useMemo(
+    () => new Set(relayAgents.map((agent) => normalizePubkey(agent.pubkey))),
+    [relayAgents],
+  );
+
+  const isBot = React.useCallback(
+    (member: ChannelMember) => {
+      const normalized = normalizePubkey(member.pubkey);
+      return (
+        member.role === "bot" ||
+        managedAgentPubkeys.has(normalized) ||
+        relayAgentPubkeys.has(normalized)
+      );
+    },
+    [managedAgentPubkeys, relayAgentPubkeys],
+  );
+
+  const { people, bots } = React.useMemo(() => {
+    const peopleList: ChannelMember[] = [];
+    const botList: ChannelMember[] = [];
+
+    for (const member of members) {
+      if (isBot(member)) {
+        botList.push(member);
+      } else {
+        peopleList.push(member);
+      }
+    }
+
+    const sort = (list: ChannelMember[]) =>
+      [...list].sort((left, right) =>
+        compareMembersByRole(left, right, currentPubkey),
+      );
+
+    return { people: sort(peopleList), bots: sort(botList) };
+  }, [currentPubkey, isBot, members]);
+
+  return {
+    people,
+    bots,
+    peopleCount: people.length,
+    botCount: bots.length,
+    isBot,
+    managedAgentsQuery,
+    relayAgentsQuery,
+  };
+}
diff --git a/desktop/src/features/channels/ui/ChannelManagementSheet.tsx b/desktop/src/features/channels/ui/ChannelManagementSheet.tsx
index ac25fea0a..8ec47403f 100644
--- a/desktop/src/features/channels/ui/ChannelManagementSheet.tsx
+++ b/desktop/src/features/channels/ui/ChannelManagementSheet.tsx
@@ -1,36 +1,30 @@
 import {
   Archive,
   ArchiveRestore,
-  Crown,
   DoorClosed,
   DoorOpen,
   FileText,
   Hash,
   Lock,
   MessageSquare,
-  Shield,
-  User,
   Users,
 } from "lucide-react";
 import * as React from "react";
 
 import {
-  useAddChannelMembersMutation,
   useArchiveChannelMutation,
   useChannelDetailsQuery,
   useChannelMembersQuery,
   useDeleteChannelMutation,
   useJoinChannelMutation,
   useLeaveChannelMutation,
-  useRemoveChannelMemberMutation,
   useSetChannelPurposeMutation,
   useSetChannelTopicMutation,
   useUnarchiveChannelMutation,
   useUpdateChannelMutation,
 } from "@/features/channels/hooks";
-import { usePresenceQuery } from "@/features/presence/hooks";
-import { PresenceBadge } from "@/features/presence/ui/PresenceBadge";
-import type { Channel, ChannelMember } from "@/shared/api/types";
+import { compareMembersByRole } from "@/features/channels/lib/memberUtils";
+import type { Channel } from "@/shared/api/types";
 import {
   AlertDialog,
   AlertDialogAction,
@@ -54,7 +48,6 @@ import {
 } from "@/shared/ui/sheet";
 import { Textarea } from "@/shared/ui/textarea";
 import { ChannelCanvas } from "./ChannelCanvas";
-import { ChannelMemberInviteCard } from "./ChannelMemberInviteCard";
 
 type ChannelManagementSheetProps = {
   channel: Channel | null;
@@ -64,26 +57,6 @@ type ChannelManagementSheetProps = {
   open: boolean;
 };
 
-const roleOrder: Record<ChannelMember["role"], number> = {
-  owner: 0,
-  admin: 1,
-  member: 2,
-  guest: 3,
-  bot: 4,
-};
-
-function formatPubkey(pubkey: string) {
-  return `${pubkey.slice(0, 8)}…${pubkey.slice(-4)}`;
-}
-
-function formatMemberName(member: ChannelMember, currentPubkey?: string) {
-  if (currentPubkey && member.pubkey === currentPubkey) {
-    return "You";
-  }
-
-  return member.displayName ?? formatPubkey(member.pubkey);
-}
-
 function Section({
   title,
   description,
@@ -120,17 +93,6 @@ function MetadataPill({
   );
 }
 
-function roleIcon(role: ChannelMember["role"]) {
-  switch (role) {
-    case "owner":
-      return Crown;
-    case "admin":
-      return Shield;
-    default:
-      return User;
-  }
-}
-
 export function ChannelManagementSheet({
   channel,
   currentPubkey,
@@ -147,36 +109,16 @@ export function ChannelManagementSheet({
   const archiveChannelMutation = useArchiveChannelMutation(channelId);
   const unarchiveChannelMutation = useUnarchiveChannelMutation(channelId);
   const deleteChannelMutation = useDeleteChannelMutation(channelId);
-  const addMembersMutation = useAddChannelMembersMutation(channelId);
-  const removeMemberMutation = useRemoveChannelMemberMutation(channelId);
   const joinChannelMutation = useJoinChannelMutation(channelId);
   const leaveChannelMutation = useLeaveChannelMutation(channelId);
 
   const detail = detailsQuery.data ?? channel;
   const members = React.useMemo(() => {
     const currentMembers = membersQuery.data ?? [];
-    return [...currentMembers].sort((left, right) => {
-      if (currentPubkey && left.pubkey === currentPubkey) {
-        return -1;
-      }
-
-      if (currentPubkey && right.pubkey === currentPubkey) {
-        return 1;
-      }
-
-      const roleDelta = roleOrder[left.role] - roleOrder[right.role];
-      if (roleDelta !== 0) {
-        return roleDelta;
-      }
-
-      return formatMemberName(left).localeCompare(formatMemberName(right));
-    });
+    return [...currentMembers].sort((left, right) =>
+      compareMembersByRole(left, right, currentPubkey),
+    );
   }, [currentPubkey, membersQuery.data]);
-  const memberPresenceQuery = usePresenceQuery(
-    members.map((member) => member.pubkey),
-    { enabled: open && members.length > 0 },
-  );
-
   const selfMember =
     members.find((member) => member.pubkey === currentPubkey) ?? null;
   const hasResolvedMembership = membersQuery.data !== undefined;
@@ -197,6 +139,11 @@ export function ChannelManagementSheet({
     detail?.channelType !== "dm" &&
     !isArchived &&
     selfMember !== null;
+  const showAccessSection =
+    canJoin ||
+    canLeave ||
+    joinChannelMutation.error instanceof Error ||
+    leaveChannelMutation.error instanceof Error;
 
   const [nameDraft, setNameDraft] = React.useState("");
   const [descriptionDraft, setDescriptionDraft] = React.useState("");
@@ -312,122 +259,75 @@ export function ChannelManagementSheet({
             </p>
           ) : null}
 
-          <Section
-            description="Open channels stay visible to everyone. Private channels require an invite."
-            title="Access"
-          >
-            <div className="flex flex-wrap gap-2">
-              {canJoin ? (
-                <Button
-                  data-testid="channel-management-join"
-                  disabled={joinChannelMutation.isPending}
-                  onClick={() => {
-                    void joinChannelMutation.mutateAsync();
-                  }}
-                  size="sm"
-                  type="button"
-                >
-                  <DoorOpen className="h-4 w-4" />
-                  {joinChannelMutation.isPending
-                    ? "Joining..."
-                    : "Join channel"}
-                </Button>
-              ) : null}
-
-              {canLeave ? (
-                <Button
-                  data-testid="channel-management-leave"
-                  disabled={leaveChannelMutation.isPending}
-                  onClick={() => {
-                    void leaveChannelMutation.mutateAsync().then(() => {
-                      onOpenChange(false);
-                    });
-                  }}
-                  size="sm"
-                  type="button"
-                  variant="outline"
-                >
-                  <DoorClosed className="h-4 w-4" />
-                  {leaveChannelMutation.isPending
-                    ? "Leaving..."
-                    : "Leave channel"}
-                </Button>
-              ) : null}
-            </div>
-            {joinChannelMutation.error instanceof Error ? (
-              <p className="text-sm text-destructive">
-                {joinChannelMutation.error.message}
-              </p>
-            ) : null}
-            {leaveChannelMutation.error instanceof Error ? (
-              <p className="text-sm text-destructive">
-                {leaveChannelMutation.error.message}
-              </p>
-            ) : null}
-          </Section>
-
-          <Separator />
-
-          <Section
-            description="Name and description are owner/admin actions."
-            title="Details"
-          >
-            <form
-              className="space-y-3"
-              onSubmit={(event) => {
-                event.preventDefault();
-                void updateChannelMutation.mutateAsync({
-                  description: descriptionDraft.trim() || undefined,
-                  name: nameDraft.trim() || undefined,
-                });
-              }}
-            >
-              <div className="space-y-1.5">
-                <label className="text-sm font-medium" htmlFor="channel-name">
-                  Name
-                </label>
-                <Input
-                  data-testid="channel-management-name"
-                  disabled={
-                    !canManageChannel || updateChannelMutation.isPending
-                  }
-                  id="channel-name"
-                  onChange={(event) => setNameDraft(event.target.value)}
-                  value={nameDraft}
-                />
-              </div>
-              <div className="space-y-1.5">
-                <label
-                  className="text-sm font-medium"
-                  htmlFor="channel-description"
-                >
-                  Description
-                </label>
-                <Textarea
-                  className="min-h-24"
-                  data-testid="channel-management-description"
-                  disabled={
-                    !canManageChannel || updateChannelMutation.isPending
-                  }
-                  id="channel-description"
-                  onChange={(event) => setDescriptionDraft(event.target.value)}
-                  value={descriptionDraft}
-                />
-              </div>
-              <Button
-                data-testid="channel-management-save-details"
-                disabled={!canManageChannel || updateChannelMutation.isPending}
-                size="sm"
-                type="submit"
+          {showAccessSection ? (
+            <>
+              <Section
+                description="Open channels stay visible to everyone. Private channels require an invite."
+                title="Access"
               >
-                {updateChannelMutation.isPending ? "Saving..." : "Save details"}
-              </Button>
-              {updateChannelMutation.error instanceof Error ? (
-                <p className="text-sm text-destructive">
-                  {updateChannelMutation.error.message}
-                </p>
-              ) : null}
-            </form>
+                <div className="flex flex-wrap gap-2">
+                  {canJoin ? (
+                    <Button
+                      data-testid="channel-management-join"
+                      disabled={joinChannelMutation.isPending}
+                      onClick={() => {
+                        void joinChannelMutation.mutateAsync();
+                      }}
+                      size="sm"
+                      type="button"
+                    >
+                      <DoorOpen className="h-4 w-4" />
+                      {joinChannelMutation.isPending
+                        ? "Joining..."
+                        : "Join channel"}
+                    </Button>
+                  ) : null}
+
+                  {canLeave ? (
+                    <Button
+                      data-testid="channel-management-leave"
+                      disabled={leaveChannelMutation.isPending}
+                      onClick={() => {
+                        void leaveChannelMutation.mutateAsync().then(() => {
+                          onOpenChange(false);
+                        });
+                      }}
+                      size="sm"
+                      type="button"
+                      variant="outline"
+                    >
+                      <DoorClosed className="h-4 w-4" />
+                      {leaveChannelMutation.isPending
+                        ? "Leaving..."
+                        : "Leave channel"}
+                    </Button>
+                  ) : null}
+                </div>
+                {joinChannelMutation.error instanceof Error ? (
+                  <p className="text-sm text-destructive">
+                    {joinChannelMutation.error.message}
+                  </p>
+                ) : null}
+                {leaveChannelMutation.error instanceof Error ? (
+                  <p className="text-sm text-destructive">
+                    {leaveChannelMutation.error.message}
+                  </p>
+                ) : null}
+              </Section>
+
+              <Separator />
+            </>
+          ) : null}
+
+          <Section
+            description="A shared Markdown document for the channel."
+            title="Canvas"
+          >
+            <ChannelCanvas
+              canEdit={canEditNarrative}
+              channelId={channelId}
+              isArchived={isArchived}
+            />
           </Section>
 
           <Separator />
@@ -518,112 +418,65 @@ export function ChannelManagementSheet({
           <Separator />
 
           <Section
-            description="A shared Markdown document for the channel."
-            title="Canvas"
+            description="Name and description are owner/admin actions."
+            title="Details"
           >
-            <ChannelCanvas
-              canEdit={canEditNarrative}
-              channelId={channelId}
-              isArchived={isArchived}
-            />
-          </Section>
-
-          <Separator />
-
-          <Section
-            description="Owners and admins can invite members or remove them."
-            title="Members"
-          >
-            {canManageChannel && resolvedChannel.channelType !== "dm" ? (
-              <ChannelMemberInviteCard
-                existingMembers={members}
-                isPending={addMembersMutation.isPending}
-                onSubmit={(input) => addMembersMutation.mutateAsync(input)}
-                open={open}
-                requestErrorMessage={
-                  addMembersMutation.error instanceof Error
-                    ? addMembersMutation.error.message
-                    : null
-                }
-              />
-            ) : null}
-
-            <div className="space-y-2" data-testid="channel-members-list">
-              {members.length > 0 ? (
-                members.map((member) => {
-                  const Icon = roleIcon(member.role);
-
-                  return (
-                    <div
-                      className="flex items-start justify-between gap-3 rounded-2xl border border-border/80 bg-background px-4 py-3"
-                      data-testid={`channel-member-${member.pubkey}`}
-                      key={member.pubkey}
-                    >
-                      <div className="min-w-0 space-y-1">
-                        <div className="flex items-center gap-2">
-                          <Icon className="h-4 w-4 text-muted-foreground" />
-                          <p className="truncate text-sm font-medium">
-                            {formatMemberName(member, currentPubkey)}
-                          </p>
-                          {memberPresenceQuery.data ? (
-                            <PresenceBadge
-                              className="border-border/70 bg-muted/50 px-2 py-0.5 text-[10px] uppercase tracking-[0.14em]"
-                              data-testid={`member-presence-${member.pubkey}`}
-                              status={
-                                memberPresenceQuery.data[
-                                  member.pubkey.toLowerCase()
-                                ] ?? "offline"
-                              }
-                            />
-                          ) : null}
-                          <span className="rounded-full bg-muted px-2 py-0.5 text-[10px] font-semibold uppercase tracking-[0.14em] text-muted-foreground">
-                            {member.role}
-                          </span>
-                        </div>
-                        <p className="text-xs text-muted-foreground">
-                          {member.pubkey}
-                        </p>
-                      </div>
-                      {canManageChannel ||
-                      (currentPubkey && member.pubkey === currentPubkey) ? (
-                        <Button
-                          data-testid={`remove-member-${member.pubkey}`}
-                          disabled={
-                            removeMemberMutation.isPending || isArchived
-                          }
-                          onClick={() => {
-                            void removeMemberMutation
-                              .mutateAsync(member.pubkey)
-                              .then(() => {
-                                if (member.pubkey === currentPubkey) {
-                                  onOpenChange(false);
-                                }
-                              });
-                          }}
-                          size="sm"
-                          type="button"
-                          variant="ghost"
-                        >
-                          Remove
-                        </Button>
-                      ) : null}
-                    </div>
-                  );
-                })
-              ) : (
-                <p className="text-sm text-muted-foreground">
-                  {membersQuery.isLoading
-                    ? "Loading members..."
-                    : "No active members found."}
+            <form
+              className="space-y-3"
+              onSubmit={(event) => {
+                event.preventDefault();
+                void updateChannelMutation.mutateAsync({
+                  description: descriptionDraft.trim() || undefined,
+                  name: nameDraft.trim() || undefined,
+                });
+              }}
+            >
+              <div className="space-y-1.5">
+                <label className="text-sm font-medium" htmlFor="channel-name">
+                  Name
+                </label>
+                <Input
+                  data-testid="channel-management-name"
+                  disabled={
+                    !canManageChannel || updateChannelMutation.isPending
+                  }
+                  id="channel-name"
+                  onChange={(event) => setNameDraft(event.target.value)}
+                  value={nameDraft}
+                />
+              </div>
+              <div className="space-y-1.5">
+                <label
+                  className="text-sm font-medium"
+                  htmlFor="channel-description"
+                >
+                  Description
+                </label>
+                <Textarea
+                  className="min-h-24"
+                  data-testid="channel-management-description"
+                  disabled={
+                    !canManageChannel || updateChannelMutation.isPending
+                  }
+                  id="channel-description"
+                  onChange={(event) => setDescriptionDraft(event.target.value)}
+                  value={descriptionDraft}
+                />
+              </div>
+              <Button
+                data-testid="channel-management-save-details"
+                disabled={!canManageChannel || updateChannelMutation.isPending}
+                size="sm"
+                type="submit"
+              >
+                {updateChannelMutation.isPending ? "Saving..." : "Save details"}
+              </Button>
+              {updateChannelMutation.error instanceof Error ? (
+                <p className="text-sm text-destructive">
+                  {updateChannelMutation.error.message}
                 </p>
-              )}
-            </div>
-
-            {removeMemberMutation.error instanceof Error ? (
-              <p className="text-sm text-destructive">
-                {removeMemberMutation.error.message}
-              </p>
-            ) : null}
+              ) : null}
+            </form>
           </Section>
 
           {resolvedChannel.channelType !== "dm" ? (
diff --git a/desktop/src/features/channels/ui/ChannelMemberInviteCard.tsx b/desktop/src/features/channels/ui/ChannelMemberInviteCard.tsx
index 1f7e691b8..5c5d7dde7 100644
--- a/desktop/src/features/channels/ui/ChannelMemberInviteCard.tsx
+++ b/desktop/src/features/channels/ui/ChannelMemberInviteCard.tsx
@@ -1,20 +1,18 @@
-import { Search, UserPlus, X } from "lucide-react";
+import { ChevronDown, Search, UserPlus, X } from "lucide-react";
 import * as React from "react";
 
+import { formatPubkey } from "@/features/channels/lib/memberUtils";
 import { useUserSearchQuery } from "@/features/profile/hooks";
 import type {
   AddChannelMembersResult,
   ChannelMember,
   UserSearchResult,
 } from "@/shared/api/types";
+import { cn } from "@/shared/lib/cn";
 import { Button } from "@/shared/ui/button";
 import { Input } from "@/shared/ui/input";
 import { Textarea } from "@/shared/ui/textarea";
 
-function formatPubkey(pubkey: string) {
-  return `${pubkey.slice(0, 8)}…${pubkey.slice(-4)}`;
-}
-
 function formatSearchUserName(user: UserSearchResult) {
   return (
     user.displayName?.trim() ||
@@ -52,6 +50,8 @@ export function ChannelMemberInviteCard({
 }) {
   const [invitePubkeys, setInvitePubkeys] = React.useState("");
   const [inviteQuery, setInviteQuery] = React.useState("");
+  const [isDirectPubkeyEntryOpen, setIsDirectPubkeyEntryOpen] =
+    React.useState(false);
   const [selectedInvitees, setSelectedInvitees] = React.useState<
     UserSearchResult[]
   >([]);
@@ -89,25 +89,34 @@ export function ChannelMemberInviteCard({
     if (!open) {
       setInvitePubkeys("");
       setInviteQuery("");
+      setIsDirectPubkeyEntryOpen(false);
       setSelectedInvitees([]);
       setSubmissionErrors([]);
     }
   }, [open]);
 
-  const parsedInvitePubkeys = invitePubkeys
-    .split(/[\s,]+/)
-    .map((value) => value.trim())
-    .filter((value) => value.length > 0);
+  const parsedInvitePubkeys = React.useMemo(
+    () =>
+      invitePubkeys
+        .split(/[\s,]+/)
+        .map((value) => value.trim())
+        .filter((value) => value.length > 0),
+    [invitePubkeys],
+  );
   const inviteTargets = [
     ...new Set([
       ...selectedInvitees.map((invitee) => invitee.pubkey),
       ...parsedInvitePubkeys,
     ]),
   ];
+  const directEntryLabel =
+    parsedInvitePubkeys.length > 0 && !isDirectPubkeyEntryOpen
+      ? `Direct pubkey entry (${parsedInvitePubkeys.length} ready)`
+      : "Direct pubkey entry";
 
   return (
     <form
-      className="space-y-3 rounded-2xl border border-border/80 bg-muted/20 p-4"
+      className="space-y-2.5 rounded-xl border border-border/80 bg-muted/15 p-3"
       onSubmit={(event) => {
         event.preventDefault();
         void onSubmit({
@@ -122,29 +131,35 @@ export function ChannelMemberInviteCard({
               (invitee) => !addedPubkeys.has(invitee.pubkey.toLowerCase()),
             ),
           );
-          setInvitePubkeys(
-            parsedInvitePubkeys
-              .filter((pubkey) => !addedPubkeys.has(pubkey.toLowerCase()))
-              .join("\n"),
-          );
+          const remainingPubkeys = parsedInvitePubkeys
+            .filter((pubkey) => !addedPubkeys.has(pubkey.toLowerCase()))
+            .join("\n");
+          setInvitePubkeys(remainingPubkeys);
+          if (remainingPubkeys.length > 0) {
+            setIsDirectPubkeyEntryOpen(true);
+          }
           setInviteQuery("");
           setSubmissionErrors(result.errors);
         });
       }}
     >
-      <div className="flex items-center gap-2 text-sm font-medium">
-        <UserPlus className="h-4 w-4" />
-        Add members
+      <div className="flex items-center justify-between gap-2">
+        <div className="flex items-center gap-2 text-sm font-medium">
+          <UserPlus className="h-4 w-4" />
+          <span>Add members</span>
+        </div>
+        {inviteTargets.length > 0 ? (
+          <span className="rounded-full bg-background px-2 py-1 text-[11px] font-medium leading-none text-muted-foreground">
+            {inviteTargets.length} selected
+          </span>
+        ) : null}
       </div>
       <div className="space-y-2">
-        <label
-          className="text-sm font-medium"
-          htmlFor="channel-management-search-users"
-        >
+        <label className="sr-only" htmlFor="channel-management-search-users">
           Search people
         </label>
-        <div className="rounded-xl border border-border/80 bg-background">
-          <div className="flex items-center gap-2 px-3 py-2">
+        <div className="rounded-lg border border-border/80 bg-background">
+          <div className="flex items-center gap-2 px-2.5 py-2">
             <Search className="h-4 w-4 text-muted-foreground" />
             <Input
               className="h-auto border-0 px-0 py-0 shadow-none focus-visible:ring-0"
@@ -152,15 +167,15 @@ export function ChannelMemberInviteCard({
               disabled={isPending}
               id="channel-management-search-users"
               onChange={(event) => setInviteQuery(event.target.value)}
-              placeholder="Search by name, NIP-05, or pubkey."
+              placeholder="Search by name or NIP-05."
               value={inviteQuery}
             />
           </div>
           {selectedInvitees.length > 0 ? (
-            <div className="flex flex-wrap gap-2 border-t border-border/70 px-3 py-2">
+            <div className="flex flex-wrap gap-1.5 border-t border-border/70 px-2.5 py-2">
               {selectedInvitees.map((invitee) => (
                 <div
-                  className="inline-flex items-center gap-2 rounded-full border border-border/80 bg-muted/60 px-3 py-1 text-xs"
+                  className="inline-flex items-center gap-1.5 rounded-full border border-border/80 bg-muted/60 px-2.5 py-1 text-[11px] leading-none"
                   data-testid={`selected-invitee-${invitee.pubkey}`}
                   key={invitee.pubkey}
                 >
@@ -179,7 +194,7 @@ export function ChannelMemberInviteCard({
                     }}
                     type="button"
                   >
-                    <X className="h-3.5 w-3.5" />
+                    <X className="h-3 w-3" />
                   </button>
                 </div>
               ))}
@@ -192,10 +207,10 @@ export function ChannelMemberInviteCard({
                   Searching…
                 </p>
               ) : inviteSearchResults.length > 0 ? (
-                <div className="space-y-1">
+                <div className="max-h-44 space-y-1 overflow-y-auto">
                   {inviteSearchResults.map((result) => (
                     <button
-                      className="flex w-full items-center justify-between rounded-lg px-3 py-2 text-left transition-colors hover:bg-accent hover:text-accent-foreground"
+                      className="flex w-full items-center justify-between rounded-md px-2.5 py-1.5 text-left transition-colors hover:bg-accent hover:text-accent-foreground"
                       data-testid={`channel-user-search-result-${result.pubkey}`}
                       key={result.pubkey}
                       onClick={() => {
@@ -205,7 +220,7 @@ export function ChannelMemberInviteCard({
                       type="button"
                     >
                       <div className="min-w-0">
-                        <p className="truncate text-sm font-medium">
+                        <p className="truncate text-sm font-medium leading-5">
                           {formatSearchUserName(result)}
                         </p>
                         <p className="truncate text-xs text-muted-foreground">
@@ -230,49 +245,76 @@ export function ChannelMemberInviteCard({
           </p>
         ) : null}
       </div>
-      <div className="space-y-1.5">
-        <label
-          className="text-sm font-medium"
-          htmlFor="channel-management-add-pubkeys"
+      <div className="space-y-2">
+        <button
+          aria-controls="channel-management-direct-pubkeys-panel"
+          aria-expanded={isDirectPubkeyEntryOpen}
+          className="inline-flex items-center gap-1.5 text-xs font-medium text-muted-foreground transition-colors hover:text-foreground"
+          data-testid="channel-management-toggle-direct-pubkeys"
+          onClick={() => {
+            setIsDirectPubkeyEntryOpen((current) => !current);
+          }}
+          type="button"
         >
-          Paste pubkeys
-        </label>
-        <Textarea
-          className="min-h-24"
-          data-testid="channel-management-add-pubkeys"
-          disabled={isPending}
-          id="channel-management-add-pubkeys"
-          onChange={(event) => setInvitePubkeys(event.target.value)}
-          placeholder="Optional: paste one or more pubkeys, separated by spaces, commas, or new lines."
-          value={invitePubkeys}
-        />
+          <ChevronDown
+            className={cn(
+              "h-4 w-4 transition-transform",
+              isDirectPubkeyEntryOpen && "rotate-180",
+            )}
+          />
+          <span>{directEntryLabel}</span>
+        </button>
+
+        {isDirectPubkeyEntryOpen ? (
+          <div
+            className="space-y-1.5 rounded-lg border border-dashed border-border/80 bg-background/70 p-2.5"
+            id="channel-management-direct-pubkeys-panel"
+          >
+            <label className="sr-only" htmlFor="channel-management-add-pubkeys">
+              Paste pubkeys
+            </label>
+            <p className="text-xs text-muted-foreground">
+              For exact pubkeys when search is not the right fit.
+            </p>
+            <Textarea
+              className="min-h-24"
+              data-testid="channel-management-add-pubkeys"
+              disabled={isPending}
+              id="channel-management-add-pubkeys"
+              onChange={(event) => setInvitePubkeys(event.target.value)}
+              placeholder="Paste one or more pubkeys, separated by spaces, commas, or new lines."
+              value={invitePubkeys}
+            />
+          </div>
+        ) : null}
       </div>
-      <div className="flex flex-wrap items-center gap-3">
-        <label
-          className="flex items-center gap-2 text-sm text-muted-foreground"
-          htmlFor="channel-member-role"
-        >
+      <div className="flex flex-wrap items-center justify-between gap-2">
+        <label className="sr-only" htmlFor="channel-member-role">
           Role
         </label>
-        <select
-          className="h-9 rounded-md border border-input bg-background px-3 text-sm"
-          data-testid="channel-management-add-role"
-          disabled={isPending}
-          id="channel-member-role"
-          onChange={(event) =>
-            setInviteRole(
-              event.target.value as Exclude<ChannelMember["role"], "owner">,
-            )
-          }
-          value={inviteRole}
-        >
-          {["member", "admin", "guest", "bot"].map((role) => (
-            <option key={role} value={role}>
-              {role}
-            </option>
-          ))}
-        </select>
+        <div className="flex items-center gap-2">
+          <span className="text-xs text-muted-foreground">Role</span>
+          <select
+            className="h-8 rounded-md border border-input bg-background px-2.5 text-sm"
+            data-testid="channel-management-add-role"
+            disabled={isPending}
+            id="channel-member-role"
+            onChange={(event) =>
+              setInviteRole(
+                event.target.value as Exclude<ChannelMember["role"], "owner">,
+              )
+            }
+            value={inviteRole}
+          >
+            {["member", "admin", "guest", "bot"].map((role) => (
+              <option key={role} value={role}>
+                {role}
+              </option>
+            ))}
+          </select>
+        </div>
         <Button
+          className="min-w-24"
           data-testid="channel-management-add-members"
           disabled={isPending || inviteTargets.length === 0}
           size="sm"
diff --git a/desktop/src/features/channels/ui/ChannelMembersBar.tsx b/desktop/src/features/channels/ui/ChannelMembersBar.tsx
index 7a797ac03..f14b1722c 100644
--- a/desktop/src/features/channels/ui/ChannelMembersBar.tsx
+++ b/desktop/src/features/channels/ui/ChannelMembersBar.tsx
@@ -1,4 +1,4 @@
-import { Bot, Plus, Settings2, UserRound, Zap } from "lucide-react";
+import { Plus, Settings2, Users, Zap } from "lucide-react";
 import * as React from "react";
 
 import {
@@ -18,34 +18,14 @@ type ChannelMembersBarProps = {
   channel: Channel;
   currentPubkey?: string;
   onManageChannel: () => void;
+  onToggleMembers: () => void;
 };
 
-function CountStat({
-  count,
-  icon: Icon,
-  label,
-  loading,
-}: {
-  count: number;
-  icon: React.ComponentType<{ className?: string }>;
-  label: string;
-  loading?: boolean;
-}) {
-  return (
-    <div className="inline-flex h-8 items-center justify-center gap-1.5 rounded-full bg-muted/55 px-2.5 text-muted-foreground">
-      <Icon className="h-3.5 w-3.5 shrink-0 text-muted-foreground/70" />
-      <span className="relative top-px min-w-[1ch] text-[13px] font-medium leading-none text-muted-foreground/80 tabular-nums">
-        {loading ? "..." : count}
-      </span>
-      <span className="sr-only">{loading ? `Loading ${label}` : label}</span>
-    </div>
-  );
-}
-
 export function ChannelMembersBar({
   channel,
   currentPubkey,
   onManageChannel,
+  onToggleMembers,
 }: ChannelMembersBarProps) {
   const [isAddBotOpen, setIsAddBotOpen] = React.useState(false);
   const [isCreateWorkflowOpen, setIsCreateWorkflowOpen] = React.useState(false);
@@ -55,6 +35,7 @@ export function ChannelMembersBar({
   const managedAgentsQuery = useManagedAgentsQuery();
   const relayAgentsQuery = useRelayAgentsQuery();
   const members = membersQuery.data ?? [];
+  const memberCount = membersQuery.data?.length ?? channel.memberCount;
   const providers = React.useMemo(
     () =>
       [...(providersQuery.data ?? [])].sort((left, right) => {
@@ -68,8 +49,6 @@ export function ChannelMembersBar({
       }),
     [providersQuery.data],
   );
-  const managedAgents = managedAgentsQuery.data ?? [];
-  const relayAgents = relayAgentsQuery.data ?? [];
   const normalizedCurrentPubkey = currentPubkey
     ? normalizePubkey(currentPubkey)
     : null;
@@ -83,27 +62,6 @@ export function ChannelMembersBar({
     channel.channelType !== "dm" &&
     channel.archivedAt === null &&
     (channel.visibility === "open" || canManageMembers);
-  const managedAgentPubkeys = React.useMemo(
-    () => new Set(managedAgents.map((agent) => normalizePubkey(agent.pubkey))),
-    [managedAgents],
-  );
-  const relayAgentPubkeys = React.useMemo(
-    () => new Set(relayAgents.map((agent) => normalizePubkey(agent.pubkey))),
-    [relayAgents],
-  );
-  const peopleCount = React.useMemo(
-    () =>
-      members.filter((member) => {
-        const normalizedPubkey = normalizePubkey(member.pubkey);
-        return (
-          member.role !== "bot" &&
-          !managedAgentPubkeys.has(normalizedPubkey) &&
-          !relayAgentPubkeys.has(normalizedPubkey)
-        );
-      }).length,
-    [managedAgentPubkeys, members, relayAgentPubkeys],
-  );
-  const botCount = members.length - peopleCount;
   const previousChannelIdRef = React.useRef(channel.id);
 
   React.useEffect(() => {
@@ -128,20 +86,6 @@ export function ChannelMembersBar({
   return (
     <React.Fragment>
       <div className="flex items-center gap-2">
-        <CountStat
-          count={peopleCount}
-          icon={UserRound}
-          label="people"
-          loading={membersQuery.isLoading}
-        />
-
-        <CountStat
-          count={botCount}
-          icon={Bot}
-          label="bots"
-          loading={membersQuery.isLoading}
-        />
-
         <Button
           aria-label="Add agent"
           className="h-9 w-9 rounded-full"
@@ -172,6 +116,20 @@ export function ChannelMembersBar({
           <Zap className="h-4 w-4" />
         </Button>
 
+        <Button
+          aria-label={`View channel members (${memberCount})`}
+          className="h-9 gap-1.5 rounded-full px-3"
+          data-testid="channel-members-trigger"
+          onClick={onToggleMembers}
+          type="button"
+          variant="outline"
+        >
+          <Users className="h-4 w-4" />
+          <span className="min-w-[1ch] text-sm font-medium tabular-nums">
+            {memberCount}
+          </span>
+        </Button>
+
         <Button
           aria-label="Manage channel"
           className="h-9 w-9 rounded-full"
diff --git a/desktop/src/features/channels/ui/ChannelScreen.tsx b/desktop/src/features/channels/ui/ChannelScreen.tsx
index 3a66168dd..678822c6d 100644
--- a/desktop/src/features/channels/ui/ChannelScreen.tsx
+++ b/desktop/src/features/channels/ui/ChannelScreen.tsx
@@ -5,6 +5,7 @@ import { ChatHeader } from "@/features/chat/ui/ChatHeader";
 import { useActiveChannelHeader } from "@/features/channels/useActiveChannelHeader";
 import { useChannelPaneHandlers } from "@/features/channels/useChannelPaneHandlers";
 import { ChannelMembersBar } from "@/features/channels/ui/ChannelMembersBar";
+import { MembersSidebar } from "@/features/channels/ui/MembersSidebar";
 import {
   mergeMessages,
   useChannelMessagesQuery,
@@ -75,6 +76,7 @@ export function ChannelScreen({
   searchAnchorEvent,
 }: ChannelScreenProps) {
   const queryClient = useQueryClient();
+  const [isMembersSidebarOpen, setIsMembersSidebarOpen] = React.useState(false);
   const [replyTargetId, setReplyTargetId] = React.useState<string | null>(null);
   const [editTargetId, setEditTargetId] = React.useState<string | null>(null);
   const currentPubkey = currentIdentity?.pubkey;
@@ -348,6 +350,7 @@ export function ChannelScreen({
               channel={activeChannel}
               currentPubkey={currentPubkey}
               onManageChannel={onManageChannel}
+              onToggleMembers={() => setIsMembersSidebarOpen((prev) => !prev)}
             />
           ) : null
         }
@@ -427,6 +430,13 @@ export function ChannelScreen({
           </div>
         )}
       </div>
+
+      <MembersSidebar
+        channel={activeChannel}
+        currentPubkey={currentPubkey}
+        open={isMembersSidebarOpen}
+        onOpenChange={setIsMembersSidebarOpen}
+      />
     </>
   );
 }
diff --git a/desktop/src/features/channels/ui/MembersSidebar.tsx b/desktop/src/features/channels/ui/MembersSidebar.tsx
new file mode 100644
index 000000000..678ad9233
--- /dev/null
+++ b/desktop/src/features/channels/ui/MembersSidebar.tsx
@@ -0,0 +1,226 @@
+import * as React from "react";
+
+import {
+  useAddChannelMembersMutation,
+  useChannelMembersQuery,
+  useRemoveChannelMemberMutation,
+} from "@/features/channels/hooks";
+import { useClassifiedMembers } from "@/features/channels/lib/useClassifiedMembers";
+import { formatMemberName } from "@/features/channels/lib/memberUtils";
+import { useUsersBatchQuery } from "@/features/profile/hooks";
+import { ProfileAvatar } from "@/features/profile/ui/ProfileAvatar";
+import { getPresenceLabel } from "@/features/presence/lib/presence";
+import { usePresenceQuery } from "@/features/presence/hooks";
+import { PresenceDot } from "@/features/presence/ui/PresenceBadge";
+import type { Channel, ChannelMember } from "@/shared/api/types";
+import { Button } from "@/shared/ui/button";
+import {
+  Sheet,
+  SheetContent,
+  SheetDescription,
+  SheetHeader,
+  SheetTitle,
+} from "@/shared/ui/sheet";
+import { ChannelMemberInviteCard } from "./ChannelMemberInviteCard";
+
+type MembersSidebarProps = {
+  channel: Channel | null;
+  currentPubkey?: string;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+};
+
+function formatRoleLabel(member: ChannelMember, memberIsBot: boolean) {
+  if (memberIsBot) {
+    return "Bot";
+  }
+
+  return `${member.role[0]?.toUpperCase() ?? ""}${member.role.slice(1)}`;
+}
+
+export function MembersSidebar({
+  channel,
+  currentPubkey,
+  open,
+  onOpenChange,
+}: MembersSidebarProps) {
+  const channelId = channel?.id ?? null;
+  const membersQuery = useChannelMembersQuery(channelId, open);
+  const addMembersMutation = useAddChannelMembersMutation(channelId);
+  const removeMemberMutation = useRemoveChannelMemberMutation(channelId);
+
+  const rawMembers = membersQuery.data ?? [];
+  const { people, bots, isBot } = useClassifiedMembers(
+    rawMembers,
+    currentPubkey,
+  );
+
+  const allMemberPubkeys = React.useMemo(
+    () => rawMembers.map((member) => member.pubkey),
+    [rawMembers],
+  );
+  const memberPresenceQuery = usePresenceQuery(allMemberPubkeys, {
+    enabled: open && rawMembers.length > 0,
+  });
+  const memberProfilesQuery = useUsersBatchQuery(allMemberPubkeys, {
+    enabled: open && rawMembers.length > 0,
+  });
+
+  const selfMember =
+    rawMembers.find((member) => member.pubkey === currentPubkey) ?? null;
+  const canManageMembers =
+    selfMember?.role === "owner" || selfMember?.role === "admin";
+  const isArchived =
+    channel?.archivedAt !== null && channel?.archivedAt !== undefined;
+
+  if (!channel) {
+    return null;
+  }
+
+  function renderMemberCard(member: ChannelMember, memberIsBot: boolean) {
+    const canRemoveMember =
+      (selfMember?.role === "admin" && member.pubkey !== currentPubkey) ||
+      (selfMember?.role === "owner" && isBot(member)) ||
+      (currentPubkey && member.pubkey === currentPubkey);
+    const memberLabel = formatMemberName(member, currentPubkey);
+    const profile =
+      memberProfilesQuery.data?.profiles[member.pubkey.toLowerCase()] ?? null;
+    const presenceStatus =
+      memberPresenceQuery.data?.[member.pubkey.toLowerCase()] ?? null;
+    const roleLabel = formatRoleLabel(member, memberIsBot);
+
+    return (
+      <div
+        className="flex items-center justify-between gap-3 rounded-xl border border-border/80 bg-background px-3 py-2.5"
+        data-testid={`sidebar-member-${member.pubkey}`}
+        key={member.pubkey}
+      >
+        <div className="flex min-w-0 items-center gap-3">
+          <ProfileAvatar
+            avatarUrl={profile?.avatarUrl ?? null}
+            className="h-9 w-9 rounded-full text-[11px] shadow-none"
+            iconClassName="h-4 w-4"
+            label={memberLabel}
+          />
+          <div className="min-w-0 space-y-0.5">
+            <p className="truncate text-sm font-medium leading-5">
+              {memberLabel}
+            </p>
+            <div
+              className="flex flex-wrap items-center gap-1.5 text-xs text-muted-foreground"
+              data-testid={`sidebar-member-presence-${member.pubkey}`}
+            >
+              {presenceStatus ? (
+                <>
+                  <PresenceDot className="h-2 w-2" status={presenceStatus} />
+                  <span>{getPresenceLabel(presenceStatus)}</span>
+                  <span aria-hidden="true">&middot;</span>
+                </>
+              ) : null}
+              <span>{roleLabel}</span>
+            </div>
+          </div>
+        </div>
+        {canRemoveMember ? (
+          <Button
+            className="h-8 shrink-0 rounded-full px-2.5 text-xs text-muted-foreground hover:text-foreground"
+            data-testid={`sidebar-remove-member-${member.pubkey}`}
+            disabled={removeMemberMutation.isPending || isArchived}
+            onClick={() => {
+              void removeMemberMutation.mutateAsync(member.pubkey).then(() => {
+                if (member.pubkey === currentPubkey) {
+                  onOpenChange(false);
+                }
+              });
+            }}
+            size="sm"
+            type="button"
+            variant="ghost"
+          >
+            Remove
+          </Button>
+        ) : null}
+      </div>
+    );
+  }
+
+  return (
+    <Sheet onOpenChange={onOpenChange} open={open}>
+      <SheetContent
+        className="flex w-full flex-col gap-0 overflow-hidden border-l border-border/80 bg-background p-0 sm:max-w-md"
+        data-testid="members-sidebar"
+        side="right"
+      >
+        <SheetHeader className="space-y-2 border-b border-border/80 bg-muted/20 px-6 py-6 text-left">
+          <SheetTitle>Members</SheetTitle>
+          <SheetDescription>
+            People and bots in {channel.name}.
+          </SheetDescription>
+        </SheetHeader>
+
+        <div className="flex-1 space-y-6 overflow-y-auto px-6 py-6">
+          {(canManageMembers || channel.visibility === "open") &&
+          channel.channelType !== "dm" ? (
+            <ChannelMemberInviteCard
+              existingMembers={rawMembers}
+              isPending={addMembersMutation.isPending}
+              onSubmit={(input) => addMembersMutation.mutateAsync(input)}
+              open={open}
+              requestErrorMessage={
+                addMembersMutation.error instanceof Error
+                  ? addMembersMutation.error.message
+                  : null
+              }
+            />
+          ) : null}
+
+          <section className="space-y-2.5">
+            <div className="flex items-center justify-between gap-2">
+              <h2 className="text-sm font-semibold tracking-tight">People</h2>
+              <span className="rounded-full bg-muted px-2 py-0.5 text-[11px] font-medium text-muted-foreground">
+                {people.length}
+              </span>
+            </div>
+            <div className="space-y-2" data-testid="members-sidebar-people">
+              {people.length > 0 ? (
+                people.map((member) => renderMemberCard(member, false))
+              ) : (
+                <p className="text-sm text-muted-foreground">
+                  {membersQuery.isLoading
+                    ? "Loading members..."
+                    : "No people found."}
+                </p>
+              )}
+            </div>
+          </section>
+
+          <section className="space-y-2.5">
+            <div className="flex items-center justify-between gap-2">
+              <h2 className="text-sm font-semibold tracking-tight">Bots</h2>
+              <span className="rounded-full bg-muted px-2 py-0.5 text-[11px] font-medium text-muted-foreground">
+                {bots.length}
+              </span>
+            </div>
+            <div className="space-y-2" data-testid="members-sidebar-bots">
+              {bots.length > 0 ? (
+                bots.map((member) => renderMemberCard(member, true))
+              ) : (
+                <p className="text-sm text-muted-foreground">
+                  {membersQuery.isLoading
+                    ? "Loading members..."
+                    : "No bots found."}
+                </p>
+              )}
+            </div>
+          </section>
+
+          {removeMemberMutation.error instanceof Error ? (
+            <p className="text-sm text-destructive">
+              {removeMemberMutation.error.message}
+            </p>
+          ) : null}
+        </div>
+      </SheetContent>
+    </Sheet>
+  );
+}
diff --git a/desktop/src/features/channels/useLiveChannelUpdates.ts b/desktop/src/features/channels/useLiveChannelUpdates.ts
index 1538b72ad..c04efac2e 100644
--- a/desktop/src/features/channels/useLiveChannelUpdates.ts
+++ b/desktop/src/features/channels/useLiveChannelUpdates.ts
@@ -1,10 +1,8 @@
 import * as React from "react";
 import { useQueryClient } from "@tanstack/react-query";
 
-import {
-  channelsQueryKey,
-  updateChannelLastMessageAt,
-} from "@/features/channels/hooks";
+import { updateChannelLastMessageAt } from "@/features/channels/lib/channelCache";
+import { channelsQueryKey } from "@/features/channels/hooks";
 import { mergeTimelineCacheMessages } from "@/features/messages/hooks";
 import { channelMessagesKey } from "@/features/messages/lib/messageQueryKeys";
 import { getChannelIdFromTags } from "@/features/messages/lib/threading";
diff --git a/desktop/src/features/messages/hooks.ts b/desktop/src/features/messages/hooks.ts
index acd2c8c0a..9286fc359 100644
--- a/desktop/src/features/messages/hooks.ts
+++ b/desktop/src/features/messages/hooks.ts
@@ -1,7 +1,7 @@
 import { useEffect, useEffectEvent } from "react";
 import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
 
-import { updateChannelLastMessageAt } from "@/features/channels/hooks";
+import { updateChannelLastMessageAt } from "@/features/channels/lib/channelCache";
 import {
   channelMessagesKey,
   dedupeMessagesById,
diff --git a/desktop/tests/e2e/channels.spec.ts b/desktop/tests/e2e/channels.spec.ts
index cbe5072bb..728187f9b 100644
--- a/desktop/tests/e2e/channels.spec.ts
+++ b/desktop/tests/e2e/channels.spec.ts
@@ -19,6 +19,16 @@ async function closeChannelManagement(page: import("@playwright/test").Page) {
   await expect(page.getByTestId("channel-management-sheet")).not.toBeVisible();
 }
 
+async function openMembersSidebar(
+  page: import("@playwright/test").Page,
+  channelName: string,
+) {
+  await page.getByTestId(`channel-${channelName}`).click();
+  await expect(page.getByTestId("chat-title")).toHaveText(channelName);
+  await page.getByTestId("channel-members-trigger").click();
+  await expect(page.getByTestId("members-sidebar")).toBeVisible();
+}
+
 test.beforeEach(async ({ page }) => {
   await installMockBridge(page);
 });
@@ -63,14 +73,15 @@ test("shows presence in sidebar, DM header, and member list", async ({
   await expect(page.getByTestId("chat-title")).toHaveText("alice-tyler");
   await expect(page.getByTestId("chat-presence-badge")).toContainText("Online");
 
-  await openChannelManagement(page, "general");
+  await openMembersSidebar(page, "general");
   await expect(
-    page.getByTestId(`member-presence-${TEST_IDENTITIES.alice.pubkey}`),
+    page.getByTestId(`sidebar-member-presence-${TEST_IDENTITIES.alice.pubkey}`),
   ).toContainText("Online");
   await expect(
-    page.getByTestId(`member-presence-${TEST_IDENTITIES.bob.pubkey}`),
+    page.getByTestId(`sidebar-member-presence-${TEST_IDENTITIES.bob.pubkey}`),
   ).toContainText("Away");
-  await closeChannelManagement(page);
+  await page.keyboard.press("Escape");
+  await expect(page.getByTestId("members-sidebar")).not.toBeVisible();
 });
 
 test("start a new direct message from the sidebar", async ({ page }) => {
@@ -342,10 +353,35 @@ test("manage channel updates details and context", async ({ page }) => {
   );
 });
 
-test("manage channel can invite and remove members", async ({ page }) => {
+test("manage channel keeps canvas near the top of the sheet", async ({
+  page,
+}) => {
   await page.goto("/");
   await openChannelManagement(page, "general");
 
+  const sectionHeadings = await page
+    .getByTestId("channel-management-sheet")
+    .locator("section h2")
+    .allTextContents();
+
+  expect(sectionHeadings).toEqual([
+    "Access",
+    "Canvas",
+    "Context",
+    "Details",
+    "Channel state",
+    "Danger zone",
+  ]);
+});
+
+test("members sidebar can invite and remove members", async ({ page }) => {
+  await page.goto("/");
+  await openMembersSidebar(page, "general");
+  await expect(page.getByTestId("channel-members-trigger")).toContainText("3");
+  await expect(page.getByTestId("channel-management-add-pubkeys")).toHaveCount(
+    0,
+  );
+
   await page.getByTestId("channel-management-search-users").fill("char");
   await expect(
     page.getByTestId(
@@ -369,19 +405,44 @@ test("manage channel can invite and remove members", async ({ page }) => {
     "",
   );
   await expect(
-    page.getByTestId(`channel-member-${TEST_IDENTITIES.charlie.pubkey}`),
+    page.getByTestId(`sidebar-member-${TEST_IDENTITIES.charlie.pubkey}`),
   ).toContainText("charlie");
-  await expect(
-    page.getByTestId(`channel-member-${TEST_IDENTITIES.charlie.pubkey}`),
-  ).toContainText("admin");
+  await expect(page.getByTestId("channel-members-trigger")).toContainText("4");
 
   await page
-    .getByTestId(`remove-member-${TEST_IDENTITIES.charlie.pubkey}`)
+    .getByTestId(`sidebar-remove-member-${TEST_IDENTITIES.charlie.pubkey}`)
     .click();
 
   await expect(
-    page.getByTestId(`channel-member-${TEST_IDENTITIES.charlie.pubkey}`),
+    page.getByTestId(`sidebar-member-${TEST_IDENTITIES.charlie.pubkey}`),
   ).toHaveCount(0);
+  await expect(page.getByTestId("channel-members-trigger")).toContainText("3");
+});
+
+test("members sidebar keeps direct pubkey entry behind a toggle", async ({
+  page,
+}) => {
+  await page.goto("/");
+  await openMembersSidebar(page, "general");
+
+  await expect(page.getByTestId("channel-management-add-pubkeys")).toHaveCount(
+    0,
+  );
+
+  await page.getByTestId("channel-management-toggle-direct-pubkeys").click();
+  await expect(
+    page.getByTestId("channel-management-add-pubkeys"),
+  ).toBeVisible();
+
+  await page
+    .getByTestId("channel-management-add-pubkeys")
+    .fill(TEST_IDENTITIES.outsider.pubkey);
+  await page.getByTestId("channel-management-add-members").click();
+
+  await expect(
+    page.getByTestId(`sidebar-member-${TEST_IDENTITIES.outsider.pubkey}`),
+  ).toContainText("outsider");
+  await expect(page.getByTestId("channel-members-trigger")).toContainText("4");
 });
 
 test("open-channel members can add agents from the header", async ({
@@ -399,6 +460,67 @@ test("open-channel members can add agents from the header", async ({
   await expect(page.getByRole("heading", { name: "Add agents" })).toBeVisible();
 });
 
+test("removing a channel-scoped agent also cleans up the managed agent record", async ({
+  page,
+}) => {
+  const agentName = `cleanup-agent-${Date.now()}`;
+
+  await page.goto("/");
+  await page.getByTestId("channel-general").click();
+  await expect(page.getByTestId("chat-title")).toHaveText("general");
+
+  await page.getByTestId("channel-add-bot-trigger").click();
+  await expect(page.getByRole("heading", { name: "Add agents" })).toBeVisible();
+
+  await page.getByRole("button", { name: "Generic" }).click();
+  await page.locator("#channel-generic-name").fill(agentName);
+  await page
+    .locator("#channel-generic-prompt")
+    .fill("Watch the channel and help when asked.");
+  await page.getByRole("button", { name: "Add agent" }).click();
+  await expect(page.getByRole("heading", { name: "Add agents" })).toHaveCount(
+    0,
+  );
+
+  await page.getByTestId("open-agents-view").click();
+  const managedAgentRow = page
+    .locator('[data-testid^="managed-agent-"]')
+    .filter({ hasText: agentName });
+  await expect(managedAgentRow).toHaveCount(1);
+
+  const managedAgentTestId = await managedAgentRow
+    .first()
+    .getAttribute("data-testid");
+  if (!managedAgentTestId) {
+    throw new Error("Managed agent row test id missing.");
+  }
+  const agentPubkey = managedAgentTestId.replace("managed-agent-", "");
+
+  await page.getByTestId("channel-general").click();
+  await openMembersSidebar(page, "general");
+
+  const removeButton = page.getByTestId(`sidebar-remove-member-${agentPubkey}`);
+  await expect(removeButton).toBeVisible();
+  await removeButton.click();
+  await expect(removeButton).toHaveCount(0);
+  await page.keyboard.press("Escape");
+  await expect(page.getByTestId("members-sidebar")).not.toBeVisible();
+
+  await page.getByTestId("open-agents-view").click();
+  await expect(page.getByTestId(`managed-agent-${agentPubkey}`)).toHaveCount(0);
+
+  const commands = await page.evaluate(() => {
+    return (
+      (
+        window as Window & {
+          __SPROUT_E2E_COMMANDS__?: string[];
+        }
+      ).__SPROUT_E2E_COMMANDS__ ?? []
+    );
+  });
+  expect(commands).toContain("delete_managed_agent");
+});
+
 test("open channel management supports join and leave", async ({ page }) => {
   await page.goto("/");
 
@@ -411,14 +533,19 @@ test("open channel management supports join and leave", async ({ page }) => {
     .click();
   await expect(page.getByTestId("chat-title")).toHaveText("design");
 
+  // Open members sidebar — should show current user after joining
+  await page.getByTestId("channel-members-trigger").click();
+  await expect(page.getByTestId("members-sidebar")).toBeVisible();
+  await expect(
+    page.getByTestId(`sidebar-member-${MOCK_IDENTITY_PUBKEY}`),
+  ).toContainText("You");
+  await page.keyboard.press("Escape");
+
   // Open channel management — should show Leave since we just joined
   await page.getByTestId("channel-management-trigger").click();
   await expect(page.getByTestId("channel-management-sheet")).toBeVisible();
   await expect(page.getByTestId("channel-management-join")).toHaveCount(0);
   await expect(page.getByTestId("channel-management-leave")).toBeVisible();
-  await expect(
-    page.getByTestId(`channel-member-${MOCK_IDENTITY_PUBKEY}`),
-  ).toContainText("You");
 
   // Leave the channel
   await page.getByTestId("channel-management-leave").click();