fix: simplify sidebar to Applications + Starred + Admin footer

Remove Agents and Routes sections from sidebar. Layout is now:
Header (camel logo + Cameleer) → Search → Applications section →
Starred section (when items exist) → Footer (Admin + API Docs).

Admin accordion: clicking Admin navigates to /admin/rbac and
expands Admin section at top while collapsing Applications and
Starred. Clicking Applications exits admin mode.

Removed buildAgentTreeNodes and buildRouteTreeNodes from
sidebar-utils (no longer needed).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/components/LayoutShell.tsx

@@ -15,26 +15,26 @@ import {
   useStarred,
 } from '@cameleer/design-system';
 import type { SearchResult, SidebarTreeNode } from '@cameleer/design-system';
-import { Box, Cpu, GitBranch, Settings, FileText, ChevronRight, Square, Pause } from 'lucide-react';
+import { Box, Settings, FileText, ChevronRight, Square, Pause, Star, X } from 'lucide-react';
 import { useRouteCatalog } from '../api/queries/catalog';
 import { useAgents } from '../api/queries/agents';
 import { useSearchExecutions, useAttributeKeys } from '../api/queries/executions';
 import { useAuthStore } from '../auth/auth-store';
 import { useState, useMemo, useCallback, useEffect, useRef, createElement } from 'react';
+import type { ReactNode } from 'react';
 import { ContentTabs } from './ContentTabs';
 import { useScope } from '../hooks/useScope';
 import {
   buildAppTreeNodes,
-  buildAgentTreeNodes,
-  buildRouteTreeNodes,
   buildAdminTreeNodes,
+  formatCount,
   readCollapsed,
   writeCollapsed,
 } from './sidebar-utils';
 import type { SidebarApp } from './sidebar-utils';
 
 /* ------------------------------------------------------------------ */
-/*  Search data builder (unchanged)                                   */
+/*  Search data builder                                               */
 /* ------------------------------------------------------------------ */
 
 function buildSearchData(
@@ -129,7 +129,7 @@ function useDebouncedValue<T>(value: T, delayMs: number): T {
 }
 
 /* ------------------------------------------------------------------ */
-/*  Icon factories for tree builders                                  */
+/*  Icon factories                                                    */
 /* ------------------------------------------------------------------ */
 
 function makeStatusDot(health: string) {
@@ -149,12 +149,69 @@ function makePauseIcon() {
 }
 
 /* ------------------------------------------------------------------ */
-/*  Section open-state keys                                           */
+/*  Starred items                                                     */
+/* ------------------------------------------------------------------ */
+
+interface StarredItem {
+  starKey: string;
+  label: string;
+  icon?: ReactNode;
+  path: string;
+  parentApp?: string;
+}
+
+function collectStarredItems(apps: SidebarApp[], starredIds: Set<string>): StarredItem[] {
+  const items: StarredItem[] = [];
+  for (const app of apps) {
+    if (starredIds.has(`app:${app.id}`)) {
+      items.push({ starKey: `app:${app.id}`, label: app.name, icon: makeStatusDot(app.health), path: `/apps/${app.id}` });
+    }
+    for (const route of app.routes) {
+      const key = `app:${app.id}/${route.id}`;
+      if (starredIds.has(key)) {
+        items.push({ starKey: key, label: route.name, path: `/apps/${app.id}/${route.id}`, parentApp: app.name });
+      }
+    }
+  }
+  return items;
+}
+
+function StarredList({ items, onNavigate, onRemove }: { items: StarredItem[]; onNavigate: (path: string) => void; onRemove: (key: string) => void }) {
+  if (items.length === 0) return null;
+  return (
+    <div style={{ padding: '4px 0' }}>
+      {items.map((item) => (
+        <div
+          key={item.starKey}
+          style={{ display: 'flex', alignItems: 'center', gap: 8, padding: '4px 12px', cursor: 'pointer', fontSize: 12, color: 'var(--sidebar-text)', borderRadius: 4 }}
+          onClick={() => onNavigate(item.path)}
+          role="button"
+          tabIndex={0}
+          onKeyDown={(e) => { if (e.key === 'Enter' || e.key === ' ') onNavigate(item.path); }}
+        >
+          {item.icon && <span style={{ display: 'flex', alignItems: 'center', color: 'var(--sidebar-muted)' }}>{item.icon}</span>}
+          <span style={{ flex: 1, overflow: 'hidden', textOverflow: 'ellipsis', whiteSpace: 'nowrap' }}>
+            {item.label}
+            {item.parentApp && <span style={{ color: 'var(--sidebar-muted)', marginLeft: 4, fontSize: 10 }}>{item.parentApp}</span>}
+          </span>
+          <button
+            style={{ background: 'none', border: 'none', padding: 2, cursor: 'pointer', color: 'var(--sidebar-muted)', display: 'flex', alignItems: 'center', opacity: 0.6 }}
+            onClick={(e) => { e.stopPropagation(); onRemove(item.starKey); }}
+            aria-label={`Remove ${item.label} from starred`}
+          >
+            <X size={10} />
+          </button>
+        </div>
+      ))}
+    </div>
+  );
+}
+
+/* ------------------------------------------------------------------ */
+/*  Section state keys                                                */
 /* ------------------------------------------------------------------ */
 
 const SK_APPS = 'sidebar:section:apps';
-const SK_AGENTS = 'sidebar:section:agents';
-const SK_ROUTES = 'sidebar:section:routes';
 const SK_ADMIN = 'sidebar:section:admin';
 const SK_COLLAPSED = 'sidebar:collapsed';
 
@@ -174,7 +231,7 @@ function LayoutContent() {
   const { scope, setTab } = useScope();
 
   // --- Starred items ------------------------------------------------
-  const { isStarred, toggleStar } = useStarred();
+  const { starredIds, isStarred, toggleStar } = useStarred();
 
   // --- Sidebar collapse ---------------------------------------------
   const [sidebarCollapsed, setSidebarCollapsed] = useState(() => readCollapsed(SK_COLLAPSED, false));
@@ -191,43 +248,28 @@ function LayoutContent() {
   // --- Section open states ------------------------------------------
   const isAdminPage = location.pathname.startsWith('/admin');
   const [appsOpen, setAppsOpen] = useState(() => isAdminPage ? false : readCollapsed(SK_APPS, true));
-  const [agentsOpen, setAgentsOpen] = useState(() => isAdminPage ? false : readCollapsed(SK_AGENTS, false));
-  const [routesOpen, setRoutesOpen] = useState(() => isAdminPage ? false : readCollapsed(SK_ROUTES, false));
   const [adminOpen, setAdminOpen] = useState(() => isAdminPage ? true : readCollapsed(SK_ADMIN, false));
+  const [starredOpen, setStarredOpen] = useState(true);
 
-  // Ref to remember operational section states when switching to admin
-  const opsStateRef = useRef({ apps: appsOpen, agents: agentsOpen, routes: routesOpen });
-
-  // Accordion effect: when entering admin, collapse operational sections; when leaving, restore
+  // Accordion: entering admin collapses apps + starred; leaving restores
+  const opsStateRef = useRef({ apps: appsOpen, starred: starredOpen });
   const prevAdminRef = useRef(isAdminPage);
   useEffect(() => {
     if (isAdminPage && !prevAdminRef.current) {
-      // Entering admin — save operational states and collapse them
-      opsStateRef.current = { apps: appsOpen, agents: agentsOpen, routes: routesOpen };
+      opsStateRef.current = { apps: appsOpen, starred: starredOpen };
       setAppsOpen(false);
-      setAgentsOpen(false);
-      setRoutesOpen(false);
+      setStarredOpen(false);
       setAdminOpen(true);
-      writeCollapsed(SK_APPS, false);
-      writeCollapsed(SK_AGENTS, false);
-      writeCollapsed(SK_ADMIN, true);
     } else if (!isAdminPage && prevAdminRef.current) {
-      // Leaving admin — restore operational states
       setAppsOpen(opsStateRef.current.apps);
-      setAgentsOpen(opsStateRef.current.agents);
-      setRoutesOpen(opsStateRef.current.routes);
+      setStarredOpen(opsStateRef.current.starred);
       setAdminOpen(false);
-      writeCollapsed(SK_APPS, opsStateRef.current.apps);
-      writeCollapsed(SK_AGENTS, opsStateRef.current.agents);
-      writeCollapsed(SK_ROUTES, opsStateRef.current.routes);
-      writeCollapsed(SK_ADMIN, false);
     }
     prevAdminRef.current = isAdminPage;
   }, [isAdminPage]); // eslint-disable-line react-hooks/exhaustive-deps
 
   const toggleApps = useCallback(() => {
     if (isAdminPage) {
-      // Clicking operational section while in admin navigates away
       navigate('/exchanges');
       return;
     }
@@ -237,34 +279,16 @@ function LayoutContent() {
     });
   }, [isAdminPage, navigate]);
 
-  const toggleAgents = useCallback(() => {
-    if (isAdminPage) {
-      navigate('/exchanges');
-      return;
-    }
-    setAgentsOpen((prev) => {
-      writeCollapsed(SK_AGENTS, !prev);
-      return !prev;
-    });
-  }, [isAdminPage, navigate]);
-
-  const toggleRoutes = useCallback(() => {
-    if (isAdminPage) {
-      navigate('/exchanges');
-      return;
-    }
-    setRoutesOpen((prev) => {
-      writeCollapsed(SK_ROUTES, !prev);
-      return !prev;
-    });
-  }, [isAdminPage, navigate]);
-
   const toggleAdmin = useCallback(() => {
+    if (!isAdminPage) {
+      navigate('/admin/rbac');
+      return;
+    }
     setAdminOpen((prev) => {
       writeCollapsed(SK_ADMIN, !prev);
       return !prev;
     });
-  }, []);
+  }, [isAdminPage, navigate]);
 
   // --- Build SidebarApp[] from catalog ------------------------------
   const sidebarApps: SidebarApp[] = useMemo(() => {
@@ -285,14 +309,7 @@ function LayoutContent() {
             exchangeCount: r.exchangeCount,
             routeState: r.routeState ?? undefined,
           })),
-        agents: [...(app.agents || [])]
-          .sort((a: any, b: any) => cmp(a.name, b.name))
-          .map((a: any) => ({
-            id: a.id,
-            name: a.name,
-            status: a.status as 'live' | 'stale' | 'dead',
-            tps: a.tps,
-          })),
+        agents: [],
       }));
   }, [catalog]);
 
@@ -302,24 +319,28 @@ function LayoutContent() {
     [sidebarApps],
   );
 
-  const agentTreeNodes: SidebarTreeNode[] = useMemo(
-    () => buildAgentTreeNodes(sidebarApps, makeStatusDot),
-    [sidebarApps],
-  );
-
-  const routeTreeNodes: SidebarTreeNode[] = useMemo(
-    () => buildRouteTreeNodes(sidebarApps, makeStatusDot, makeChevron, makeStopIcon, makePauseIcon),
-    [sidebarApps],
-  );
-
   const adminTreeNodes: SidebarTreeNode[] = useMemo(
     () => buildAdminTreeNodes(),
     [],
   );
 
+  // --- Starred items ------------------------------------------------
+  const starredItems = useMemo(
+    () => collectStarredItems(sidebarApps, starredIds),
+    [sidebarApps, starredIds],
+  );
+
   // --- Reveal path for SidebarTree auto-expand ----------------------
   const sidebarRevealPath = (location.state as any)?.sidebarReveal ?? null;
 
+  useEffect(() => {
+    if (!sidebarRevealPath) return;
+    if (sidebarRevealPath.startsWith('/apps') && !appsOpen) setAppsOpen(true);
+    if (sidebarRevealPath.startsWith('/admin') && !adminOpen) setAdminOpen(true);
+  }, [sidebarRevealPath]); // eslint-disable-line react-hooks/exhaustive-deps
+
+  const effectiveSelectedPath = sidebarRevealPath ?? location.pathname;
+
   // --- Exchange full-text search via command palette -----------------
   const [paletteQuery, setPaletteQuery] = useState('');
   const debouncedQuery = useDebouncedValue(paletteQuery, 300);
@@ -339,7 +360,6 @@ function LayoutContent() {
     [catalog, agents, attributeKeys],
   );
 
-  // Stable reference for catalog data
   const catalogRef = useRef(catalogData);
   if (catalogData !== catalogRef.current && JSON.stringify(catalogData) !== JSON.stringify(catalogRef.current)) {
     catalogRef.current = catalogData;
@@ -423,7 +443,6 @@ function LayoutContent() {
   const handlePaletteSelect = useCallback((result: any) => {
     if (result.path) {
       const state: Record<string, unknown> = { sidebarReveal: result.path };
-
       if (result.category === 'exchange' || result.category === 'attribute') {
         const parts = result.path.split('/').filter(Boolean);
         if (parts.length === 4 && parts[0] === 'exchanges') {
@@ -434,7 +453,6 @@ function LayoutContent() {
           };
         }
       }
-
       navigate(result.path, { state });
     }
     setPaletteOpen(false);
@@ -447,11 +465,9 @@ function LayoutContent() {
     navigate(`${baseParts.join('/')}?text=${encodeURIComponent(query)}`);
   }, [navigate, scope.appId, scope.routeId]);
 
-  // Translate Sidebar's internal paths to our URL structure.
   const handleSidebarNavigate = useCallback((path: string) => {
     const state = { sidebarReveal: path };
 
-    // /apps/:appId and /apps/:appId/:routeId -> current tab
     const appMatch = path.match(/^\/apps\/([^/]+)(?:\/(.+))?$/);
     if (appMatch) {
       const [, sAppId, sRouteId] = appMatch;
@@ -459,7 +475,6 @@ function LayoutContent() {
       return;
     }
 
-    // /agents/:appId/:instanceId -> runtime tab
     const agentMatch = path.match(/^\/agents\/([^/]+)(?:\/(.+))?$/);
     if (agentMatch) {
       const [, sAppId, sInstanceId] = agentMatch;
@@ -471,6 +486,10 @@ function LayoutContent() {
   }, [navigate, scope.tab]);
 
   // --- Render -------------------------------------------------------
+  const camelLogo = (
+    <img src="/favicon.svg" alt="" style={{ width: 28, height: 24 }} />
+  );
+
   const sidebarElement = (
     <Sidebar
       collapsed={sidebarCollapsed}
@@ -479,11 +498,11 @@ function LayoutContent() {
       onSearchChange={setFilterQuery}
     >
       <Sidebar.Header
-        logo={createElement(Box, { size: 20 })}
+        logo={camelLogo}
         title="Cameleer"
       />
 
-      {/* When on admin pages, show Admin section first (expanded) */}
+      {/* Admin section — shown at top when on admin pages */}
       {isAdminPage && (
         <Sidebar.Section
           icon={createElement(Settings, { size: 16 })}
@@ -505,6 +524,7 @@ function LayoutContent() {
         </Sidebar.Section>
       )}
 
+      {/* Applications section */}
       <Sidebar.Section
         icon={createElement(Box, { size: 16 })}
         label="Applications"
@@ -513,7 +533,7 @@ function LayoutContent() {
       >
         <SidebarTree
           nodes={appTreeNodes}
-          selectedPath={sidebarRevealPath ?? location.pathname}
+          selectedPath={effectiveSelectedPath}
           isStarred={isStarred}
           onToggleStar={toggleStar}
           filterQuery={filterQuery}
@@ -523,64 +543,32 @@ function LayoutContent() {
         />
       </Sidebar.Section>
 
-      <Sidebar.Section
-        icon={createElement(Cpu, { size: 16 })}
-        label="Agents"
-        open={agentsOpen}
-        onToggle={toggleAgents}
-      >
-        <SidebarTree
-          nodes={agentTreeNodes}
-          selectedPath={sidebarRevealPath ?? location.pathname}
-          isStarred={isStarred}
-          onToggleStar={toggleStar}
-          filterQuery={filterQuery}
-          persistKey="agents"
-          autoRevealPath={sidebarRevealPath}
-          onNavigate={handleSidebarNavigate}
-        />
-      </Sidebar.Section>
-
-      <Sidebar.Section
-        icon={createElement(GitBranch, { size: 16 })}
-        label="Routes"
-        open={routesOpen}
-        onToggle={toggleRoutes}
-      >
-        <SidebarTree
-          nodes={routeTreeNodes}
-          selectedPath={sidebarRevealPath ?? location.pathname}
-          isStarred={isStarred}
-          onToggleStar={toggleStar}
-          filterQuery={filterQuery}
-          persistKey="routes"
-          autoRevealPath={sidebarRevealPath}
-          onNavigate={handleSidebarNavigate}
-        />
-      </Sidebar.Section>
-
-      {/* When NOT on admin pages, show Admin section at bottom */}
-      {!isAdminPage && (
+      {/* Starred section — only when there are starred items */}
+      {starredItems.length > 0 && (
         <Sidebar.Section
-          icon={createElement(Settings, { size: 16 })}
-          label="Admin"
-          open={adminOpen}
-          onToggle={toggleAdmin}
+          icon={createElement(Star, { size: 16 })}
+          label="Starred"
+          open={starredOpen}
+          onToggle={() => setStarredOpen((v) => !v)}
         >
-          <SidebarTree
-            nodes={adminTreeNodes}
-            selectedPath={location.pathname}
-            isStarred={isStarred}
-            onToggleStar={toggleStar}
-            filterQuery={filterQuery}
-            persistKey="admin"
-            autoRevealPath={sidebarRevealPath}
+          <StarredList
+            items={starredItems}
             onNavigate={handleSidebarNavigate}
+            onRemove={toggleStar}
           />
         </Sidebar.Section>
       )}
 
+      {/* Footer — Admin + API Docs */}
       <Sidebar.Footer>
+        {!isAdminPage && (
+          <Sidebar.FooterLink
+            icon={createElement(Settings, { size: 16 })}
+            label="Admin"
+            active={false}
+            onClick={() => navigate('/admin/rbac')}
+          />
+        )}
         <Sidebar.FooterLink
           icon={createElement(FileText, { size: 16 })}
           label="API Docs"

ui/src/components/sidebar-utils.ts

@@ -12,20 +12,12 @@ export interface SidebarRoute {
   routeState?: 'stopped' | 'suspended';
 }
 
-export interface SidebarAgent {
-  id: string;
-  name: string;
-  status: 'live' | 'stale' | 'dead';
-  tps?: number;
-}
-
 export interface SidebarApp {
   id: string;
   name: string;
   health: 'live' | 'stale' | 'dead';
   exchangeCount: number;
   routes: SidebarRoute[];
-  agents: SidebarAgent[];
 }
 
 /* ------------------------------------------------------------------ */
@@ -101,67 +93,6 @@ export function buildAppTreeNodes(
   }));
 }
 
-/**
- * Agents tree — one node per app, agents as children.
- * Paths: /agents/{appId}, /agents/{appId}/{agentId}
- * Badge shows "N/M live".
- */
-export function buildAgentTreeNodes(
-  apps: SidebarApp[],
-  statusDot: (health: string) => ReactNode,
-): SidebarTreeNode[] {
-  return apps.map((app) => {
-    const liveCount = app.agents.filter((a) => a.status === 'live').length;
-    return {
-      id: `agent:${app.id}`,
-      label: app.name,
-      icon: statusDot(app.health),
-      badge: `${liveCount}/${app.agents.length} live`,
-      path: `/agents/${app.id}`,
-      children: app.agents.map((a) => ({
-        id: `agent:${app.id}/${a.id}`,
-        label: a.name,
-        icon: statusDot(a.status),
-        badge: a.tps != null ? `${a.tps.toFixed(1)} msg/s` : undefined,
-        path: `/agents/${app.id}/${a.id}`,
-      })),
-    };
-  });
-}
-
-/**
- * Routes stats tree — one node per app, routes as children.
- * Paths: /routes/{appId}, /routes/{appId}/{routeId}
- */
-export function buildRouteTreeNodes(
-  apps: SidebarApp[],
-  statusDot: (health: string) => ReactNode,
-  chevron: () => ReactNode,
-  stopIcon?: () => ReactNode,
-  pauseIcon?: () => ReactNode,
-): SidebarTreeNode[] {
-  return apps.map((app) => ({
-    id: `route:${app.id}`,
-    label: app.name,
-    icon: statusDot(app.health),
-    badge: `${app.routes.length} routes`,
-    path: `/routes/${app.id}`,
-    children: app.routes.map((r) => ({
-      id: `route:${app.id}/${r.id}`,
-      label: r.name,
-      icon: r.routeState === 'stopped' && stopIcon
-        ? stopIcon()
-        : r.routeState === 'suspended' && pauseIcon
-          ? pauseIcon()
-          : chevron(),
-      badge: r.routeState
-        ? `${r.routeState.toUpperCase()} \u00b7 ${formatCount(r.exchangeCount)}`
-        : formatCount(r.exchangeCount),
-      path: `/routes/${app.id}/${r.id}`,
-    })),
-  }));
-}
-
 /**
  * Admin tree — static 6 nodes.
  */