put the monitor scope in the url

/system-monitor/:scope, the same shape as /photos: route pair, one Navigate guard after the
hooks, scope list as react-router NavLinks, and both panels reading useParams instead of
agreeing over a `monitor:scope` channel. The Dock's isActive is a startsWith, so its
highlight survives the redirect off the bare route.

docs/navigation-audit.md

@@ -79,7 +79,7 @@ are good building blocks. The **Workspace/Panel framework** contains **zero** ro
 | M7 | `workspaces/components/Combobox.tsx:53` | caller-supplied route | (existing) | shared widget: `href`-bearing options do `navigate(option.href)`; render them as `<Link>`. Every caller inherits the opaque click. |
 | ~~M8~~ | `Layout/Header/UserMenu.tsx` | — | — | **Done.** Removed rather than routed: nothing had ever been built behind `/settings/resources`, so the item was a bounce to `/` dressed as navigation. Its `header.userMenu.resources` locale keys went with it. |
 | M9 | `Screens/Dashboard/Plans/index.tsx:36` | a plan document | `/plans/:name` | native `<select>` → local state; a plan is a real addressable doc. Have the select `navigate()` or use a link list. |
-| M10 | `SystemMonitor/ScopeList.tsx:14` | monitor scope (btop/pm2/docker) | `/system-monitor/:scope` | small fixed set; low urgency but genuinely addressable. |
+| ~~M10~~ | `SystemMonitor/ScopeList.tsx` | monitor scope (btop/pm2/docker) | `/system-monitor/:scope` | **Done.** Route pair + `Navigate` guard; the scope buttons are `NavLink`s and `useMonitorScope` reads `useParams` instead of the channel. The Dock's hand-rolled `isActive` is a `startsWith`, so its highlight survives the redirect. |
 
 **Music** (M-music) and **Soulseek** (M-slsk) are whole-workspace channel apps — pulled out below because each
 is **one design decision** that cascades across many files:
@@ -122,7 +122,6 @@ This is the primary surface to convert to URL-driven selection.
 | `music:cwd` | library location (album/artist/folder) | `/music?path=` | `MusicBrowser/MusicDetail/FavoritesView` |
 | `soulseek:section` | active Soulseek section | `/soulseek/:section` | `SoulseekNav/View/Dashboard/UserMenu` |
 | `soulseek:user` | selected peer | `/soulseek/users/:name` | `UserMenu.tsx:28`, `SoulseekUsers.tsx:34` |
-| `monitor:scope` | monitor scope | `/system-monitor/:scope` | `ScopeList.tsx` (via `shared.ts:15`) |
 | local `useState` selections | search / room / conversation / peer / open file / preview slug | respective nested routes | `SearchView`, `SoulseekRooms`, `SoulseekChat`, `SoulseekUsers`, `CodeEditor/useEditorState`, `PreviewProvider` |
 
 **Excluded — event-bus / refresh signals, NOT selection:** `files:refresh-signal`,
@@ -203,7 +202,7 @@ publishers means changing the chat panel, which is another agent's, so it is wri
 ### Phase 3 — Whole-workspace routing decisions (needs a design call first)
 - [ ] **Music** — decide `/music?path=` (or nested); back `music:cwd` with the URL; rows → `<Link>` (M-music).
 - [ ] **Soulseek** — decide the nested tree `/soulseek/:section` + `/soulseek/{users,search,rooms,chat}/:x`; **S1 decides S2–S7** (M-slsk).
-- [ ] **M10** SystemMonitor scope → `/system-monitor/:scope` (`ScopeList.tsx:14`).
+- [x] **M10** SystemMonitor scope → `/system-monitor/:scope`; `monitor:scope` channel deleted. **Needs runtime test.**
 - [ ] **M9** Plans → `/plans/:name` (`Plans/index.tsx:36`).
 
 ### Phase 4 — Polish + borderline decisions

docs/workspace-panel-todo.md

@@ -644,8 +644,10 @@ All the same bug: an app guessing "am I being closed?" from an unmount, or payin
       could never have worked: the link set the section, the tab stayed on Enterprise, and the content
       pane rendered "Select a section" for a section that existed. The tab is derived from the section
       key now, so there is nothing left to disagree with.
-      Remaining here: Music, Soulseek, SystemMonitor, Email, Browser. **Chat detail
-      (`chat:selected-session`) is chat-owned — leave it; it is written up in `COMMS/`.**
+      **SystemMonitor is done too** (audit M10) — `/system-monitor/:scope`, scope list as `NavLink`s,
+      `monitor:scope` deleted. Smallest of the seven and the same shape as `/photos`.
+      Remaining here: Music, Soulseek, Email, Browser. **Chat detail (`chat:selected-session`) is
+      chat-owned — leave it; it is written up in `COMMS/`.**
 
 ### 5.9 The context has grown an app-config section — _(found 2026-08-07)_
 

src/apps/officer-web/App.tsx

@@ -77,6 +77,7 @@ export function App() {
             <Route path="/wallet" element={<Dashboard.WalletScreen />} />
             <Route path="/wallet/:section" element={<Dashboard.WalletScreen />} />
             <Route path="/system-monitor" element={<Dashboard.SystemMonitorScreen />} />
+            <Route path="/system-monitor/:scope" element={<Dashboard.SystemMonitorScreen />} />
             {/* TEMPORARY / EXPERIMENTAL — offline file transfer over animated QR codes */}
             <Route path="/qr-transfer" element={<Dashboard.QrTransferScreen />} />
             <Route path="/activity" element={<Dashboard.ActivityScreen />} />

src/apps/officer-web/Screens/Dashboard/SystemMonitor/SystemMonitorScreen.tsx

@@ -1,14 +1,20 @@
+import { Navigate, useParams } from 'react-router';
 import type { LayoutNode } from 'officerdev';
-import { WorkspaceView } from 'officerdev';
+import { WorkspaceView, DEFAULT_MONITOR_SCOPE, monitorScopePath, isMonitorScope } from 'officerdev';
 import { useDashboardState } from 'state/useDashboardState';
 import { defaultLayout } from './defaultLayout';
 
-// /system-monitor uses the Workspace/Panel system (like /music): a horizontal split with an (empty for
-// now) left panel and the system snapshot on the right.
+// /system-monitor uses the Workspace/Panel system (like /photos): the scope list on the left, the scope
+// itself on the right. Which scope is open is `:scope` in the URL, not a panel channel.
 
 export const SystemMonitorScreen = () => {
+  const { scope } = useParams();
   const workspace = useDashboardState<LayoutNode>('screens/system-monitor', defaultLayout);
 
+  // After the hooks — it returns early. Bare /system-monitor and a scope that doesn't exist both
+  // canonicalise, so the list's router-driven highlight can never disagree with the pane.
+  if (!isMonitorScope(scope)) return <Navigate to={monitorScopePath(DEFAULT_MONITOR_SCOPE)} replace />;
+
   return (
     <div className="h-full w-full pt-2">
       <WorkspaceView

src/workspaces/officerdev/src/apps/SystemMonitor/MonitorMain.tsx

@@ -3,9 +3,10 @@ import { BtopView } from './BtopView';
 import { Pm2View } from './Pm2View';
 import { DockerView } from './DockerView';
 
-// Right panel — renders whichever scope the left ScopeList selected (default: bTop).
+// Right panel — renders whichever scope the URL names. It does not hear from the ScopeList; both read
+// `/system-monitor/:scope`.
 export const MonitorMain = ({ panelId: _panelId }: { panelId: string }) => {
-  const [scope] = useMonitorScope();
+  const scope = useMonitorScope();
   if (scope === 'pm2') return <Pm2View />;
   if (scope === 'docker') return <DockerView />;
   return <BtopView />;

src/workspaces/officerdev/src/apps/SystemMonitor/ScopeList.tsx

@@ -1,29 +1,29 @@
+import { NavLink } from 'react-router';
 import { Cpu, Server, Boxes } from 'lucide-react';
-import { useMonitorScope, SCOPES, type MonitorScope } from './shared';
+import { SCOPES, monitorScopePath, type MonitorScope } from './shared';
 
-// Left panel — a single-column list of scopes; selecting one drives the right panel via the channel.
+// Left panel — a single-column list of scopes. Each is a react-router NavLink to /system-monitor/<scope>,
+// so active state comes from the router and a scope can be linked, bookmarked and cmd-clicked.
 const ICONS: Record<MonitorScope, typeof Cpu> = { btop: Cpu, pm2: Server, docker: Boxes };
 
-export const ScopeList = ({ panelId: _panelId }: { panelId: string }) => {
-  const [scope, setScope] = useMonitorScope();
-  return (
-    <div className="flex h-full flex-col overflow-y-auto p-3">
-      {SCOPES.map((s) => {
-        const Icon = ICONS[s.id];
-        return (
-          <button
-            key={s.id}
-            type="button"
-            onClick={() => setScope(s.id)}
-            className={`flex items-center gap-2 rounded-md px-2 py-1.5 text-left text-sm ${
-              scope === s.id ? 'bg-muted text-foreground' : 'text-muted-foreground hover:bg-muted/60 hover:text-foreground'
-            }`}
-          >
-            <Icon size={15} className="shrink-0" />
-            <span className="truncate">{s.label}</span>
-          </button>
-        );
-      })}
-    </div>
-  );
-};
+export const ScopeList = ({ panelId: _panelId }: { panelId: string }) => (
+  <div className="flex h-full flex-col overflow-y-auto p-3">
+    {SCOPES.map((s) => {
+      const Icon = ICONS[s.id];
+      return (
+        <NavLink
+          key={s.id}
+          to={monitorScopePath(s.id)}
+          className={({ isActive }) =>
+            `flex items-center gap-2 rounded-md px-2 py-1.5 text-left text-sm ${
+              isActive ? 'bg-muted text-foreground' : 'text-muted-foreground hover:bg-muted/60 hover:text-foreground'
+            }`
+          }
+        >
+          <Icon size={15} className="shrink-0" />
+          <span className="truncate">{s.label}</span>
+        </NavLink>
+      );
+    })}
+  </div>
+);

src/workspaces/officerdev/src/apps/SystemMonitor/shared.ts

@@ -1,18 +1,30 @@
-import { usePanelChannel } from 'hooks/usePanelChannel';
+import { useParams } from 'react-router';
 
-// The left panel picks a scope; the right panel renders it. Coordinated over a panel channel, like the
-// /music browser → detail split.
+// The left panel picks a scope and the right panel renders it, and neither tells the other: the scope is
+// `/system-monitor/:scope`. It used to be a `monitor:scope` panel channel, which meant the URL said
+// `/system-monitor` however deep you were — nothing to link, nothing to bookmark, and the list came back
+// on whatever you last clicked in some other tab.
 export type MonitorScope = 'btop' | 'pm2' | 'docker';
 
-export const MONITOR_SCOPE_CHANNEL = 'monitor:scope';
-
 export const SCOPES: { id: MonitorScope; label: string }[] = [
   { id: 'btop', label: 'bTop' },
   { id: 'pm2', label: 'pm2 processes' },
   { id: 'docker', label: 'dockers' },
 ];
 
-export const useMonitorScope = () => usePanelChannel<MonitorScope>(MONITOR_SCOPE_CHANNEL, 'btop');
+/** Where /system-monitor lands, and where an unrecognised scope redirects to. */
+export const DEFAULT_MONITOR_SCOPE: MonitorScope = 'btop';
+
+export const isMonitorScope = (value: string | undefined): value is MonitorScope => SCOPES.some((s) => s.id === value);
+
+export const monitorScopePath = (scope: MonitorScope) => `/system-monitor/${scope}`;
+
+// SystemMonitorScreen redirects anything unrecognised, so the fallback here only covers the instant before
+// that lands.
+export const useMonitorScope = (): MonitorScope => {
+  const { scope } = useParams();
+  return isMonitorScope(scope) ? scope : DEFAULT_MONITOR_SCOPE;
+};
 
 export function fmtBytes(n: number): string {
   if (!n) return '0 B';

src/workspaces/officerdev/src/index.ts

@@ -43,6 +43,10 @@ export type { PhotosSectionId } from './apps/Photos/shared';
 export { DEFAULT_JELLYFIN_SECTION, jellyfinSectionPath, isJellyfinSection } from './apps/Jellyfin/shared';
 export type { JellyfinSectionId } from './apps/Jellyfin/shared';
 
+// Same for /system-monitor, where the param is the scope rather than a section.
+export { DEFAULT_MONITOR_SCOPE, monitorScopePath, isMonitorScope } from './apps/SystemMonitor/shared';
+export type { MonitorScope } from './apps/SystemMonitor/shared';
+
 // Same for /transmission.
 export {
   DEFAULT_TRANSMISSION_SECTION,