diff --git a/ui/src/components/layout/AppShell.module.css b/ui/src/components/layout/AppShell.module.css
index d66608c0..2c2cc0b4 100644
--- a/ui/src/components/layout/AppShell.module.css
+++ b/ui/src/components/layout/AppShell.module.css
@@ -1,7 +1,12 @@
-.main {
+.layout {
+  display: flex;
   position: relative;
   z-index: 1;
-  max-width: 1440px;
-  margin: 0 auto;
-  padding: 24px;
+}
+
+.main {
+  flex: 1;
+  min-width: 0;
+  padding: 24px;
+  min-height: calc(100vh - 56px);
 }
diff --git a/ui/src/components/layout/AppShell.tsx b/ui/src/components/layout/AppShell.tsx
index 2847c9d8..5c6de3bc 100644
--- a/ui/src/components/layout/AppShell.tsx
+++ b/ui/src/components/layout/AppShell.tsx
@@ -1,15 +1,47 @@
+import { useState, useEffect } from 'react';
 import { Outlet } from 'react-router';
 import { TopNav } from './TopNav';
+import { AppSidebar } from './AppSidebar';
 import { CommandPalette } from '../command-palette/CommandPalette';
 import styles from './AppShell.module.css';
 
+const COLLAPSED_KEY = 'cameleer-sidebar-collapsed';
+
 export function AppShell() {
+  const [collapsed, setCollapsed] = useState(() => {
+    try { return localStorage.getItem(COLLAPSED_KEY) === 'true'; }
+    catch { return false; }
+  });
+
+  // Auto-collapse on small screens
+  useEffect(() => {
+    const mq = window.matchMedia('(max-width: 1024px)');
+    function handleChange(e: MediaQueryListEvent | MediaQueryList) {
+      if (e.matches) setCollapsed(true);
+    }
+    handleChange(mq);
+    mq.addEventListener('change', handleChange);
+    return () => mq.removeEventListener('change', handleChange);
+  }, []);
+
+  function toggleSidebar() {
+    setCollapsed((prev) => {
+      const next = !prev;
+      try { localStorage.setItem(COLLAPSED_KEY, String(next)); }
+      catch { /* ignore */ }
+      return next;
+    });
+  }
+
   return (
     <>
-      <TopNav />
-      <main className={styles.main}>
-        <Outlet />
-      </main>
+      <TopNav onToggleSidebar={toggleSidebar} />
+      <div className={styles.layout}>
+        <AppSidebar collapsed={collapsed} />
+        <main className={styles.main}>
+          <Outlet />
+        </main>
+      </div>
       <CommandPalette />
     </>
   );
diff --git a/ui/src/components/layout/AppSidebar.module.css b/ui/src/components/layout/AppSidebar.module.css
new file mode 100644
index 00000000..eba3e514
--- /dev/null
+++ b/ui/src/components/layout/AppSidebar.module.css
@@ -0,0 +1,245 @@
+/* ─── Sidebar Container ─── */
+.sidebar {
+  width: 240px;
+  flex-shrink: 0;
+  display: flex;
+  flex-direction: column;
+  background: var(--bg-surface);
+  border-right: 1px solid var(--border-subtle);
+  height: calc(100vh - 56px);
+  position: sticky;
+  top: 56px;
+  overflow: hidden;
+  transition: width 0.2s ease;
+}
+
+.sidebarCollapsed {
+  width: 48px;
+}
+
+/* ─── Search ─── */
+.search {
+  padding: 12px;
+  border-bottom: 1px solid var(--border-subtle);
+}
+
+.sidebarCollapsed .search {
+  display: none;
+}
+
+.searchInput {
+  width: 100%;
+  padding: 6px 10px;
+  border: 1px solid var(--border);
+  border-radius: var(--radius-sm);
+  background: var(--bg-raised);
+  color: var(--text-primary);
+  font-size: 12px;
+  font-family: var(--font-body);
+  outline: none;
+  transition: border-color 0.15s;
+}
+
+.searchInput::placeholder {
+  color: var(--text-muted);
+}
+
+.searchInput:focus {
+  border-color: var(--amber);
+}
+
+/* ─── App List ─── */
+.appList {
+  flex: 1;
+  overflow-y: auto;
+  padding: 8px 0;
+}
+
+/* ─── Section Divider ─── */
+.divider {
+  height: 1px;
+  background: var(--border-subtle);
+  margin: 4px 12px;
+}
+
+.sidebarCollapsed .divider {
+  margin: 4px 8px;
+}
+
+/* ─── App Item ─── */
+.appItem {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  width: 100%;
+  padding: 8px 16px;
+  border: none;
+  background: none;
+  color: var(--text-secondary);
+  font-size: 13px;
+  font-family: var(--font-body);
+  cursor: pointer;
+  transition: all 0.1s;
+  text-align: left;
+  white-space: nowrap;
+  overflow: hidden;
+}
+
+.appItem:hover {
+  background: var(--bg-hover);
+  color: var(--text-primary);
+}
+
+.appItemActive {
+  background: var(--amber-glow);
+  color: var(--amber);
+}
+
+.sidebarCollapsed .appItem {
+  padding: 8px 0;
+  justify-content: center;
+  gap: 0;
+}
+
+/* ─── Health Dot ─── */
+.healthDot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  flex-shrink: 0;
+}
+
+.dotLive { background: var(--green); }
+.dotStale { background: var(--amber); }
+.dotDead { background: var(--text-muted); }
+
+/* ─── App Info (hidden when collapsed) ─── */
+.appInfo {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+.sidebarCollapsed .appInfo {
+  display: none;
+}
+
+.appName {
+  font-weight: 500;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.appMeta {
+  font-size: 11px;
+  color: var(--text-muted);
+}
+
+/* ─── All Item icon ─── */
+.allIcon {
+  width: 8px;
+  height: 8px;
+  flex-shrink: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 12px;
+  font-weight: 700;
+  color: var(--text-muted);
+  line-height: 1;
+}
+
+.appItemActive .allIcon {
+  color: var(--amber);
+}
+
+/* ─── Bottom Section ─── */
+.bottom {
+  border-top: 1px solid var(--border-subtle);
+  padding: 8px 0;
+}
+
+.bottomItem {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  width: 100%;
+  padding: 8px 16px;
+  border: none;
+  background: none;
+  color: var(--text-muted);
+  font-size: 12px;
+  font-family: var(--font-body);
+  cursor: pointer;
+  transition: all 0.1s;
+  text-decoration: none;
+  white-space: nowrap;
+}
+
+.bottomItem:hover {
+  background: var(--bg-hover);
+  color: var(--text-primary);
+}
+
+.bottomItemActive {
+  color: var(--amber);
+  background: var(--amber-glow);
+}
+
+.sidebarCollapsed .bottomItem {
+  padding: 8px 0;
+  justify-content: center;
+  gap: 0;
+}
+
+.bottomLabel {
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.sidebarCollapsed .bottomLabel {
+  display: none;
+}
+
+.bottomIcon {
+  font-size: 14px;
+  flex-shrink: 0;
+  width: 16px;
+  text-align: center;
+}
+
+/* ─── Responsive ─── */
+@media (max-width: 1024px) {
+  .sidebar {
+    width: 48px;
+  }
+
+  .sidebar .search {
+    display: none;
+  }
+
+  .sidebar .appInfo {
+    display: none;
+  }
+
+  .sidebar .appItem {
+    padding: 8px 0;
+    justify-content: center;
+    gap: 0;
+  }
+
+  .sidebar .divider {
+    margin: 4px 8px;
+  }
+
+  .sidebar .bottomItem {
+    padding: 8px 0;
+    justify-content: center;
+    gap: 0;
+  }
+
+  .sidebar .bottomLabel {
+    display: none;
+  }
+}
diff --git a/ui/src/components/layout/AppSidebar.tsx b/ui/src/components/layout/AppSidebar.tsx
new file mode 100644
index 00000000..1ebfa9f8
--- /dev/null
+++ b/ui/src/components/layout/AppSidebar.tsx
@@ -0,0 +1,129 @@
+import { useMemo, useState } from 'react';
+import { NavLink, useParams } from 'react-router';
+import { useAgents } from '../../api/queries/agents';
+import { useAuthStore } from '../../auth/auth-store';
+import type { AgentInstance } from '../../api/types';
+import styles from './AppSidebar.module.css';
+
+interface GroupInfo {
+  group: string;
+  agents: AgentInstance[];
+  liveCount: number;
+  staleCount: number;
+  deadCount: number;
+}
+
+function healthStatus(g: GroupInfo): 'live' | 'stale' | 'dead' {
+  if (g.liveCount > 0) return 'live';
+  if (g.staleCount > 0) return 'stale';
+  return 'dead';
+}
+
+interface AppSidebarProps {
+  collapsed: boolean;
+}
+
+export function AppSidebar({ collapsed }: AppSidebarProps) {
+  const { group: activeGroup } = useParams<{ group: string }>();
+  const { data: agents } = useAgents();
+  const { roles } = useAuthStore();
+  const [filter, setFilter] = useState('');
+
+  const groups = useMemo(() => {
+    if (!agents) return [];
+    const map = new Map<string, GroupInfo>();
+    for (const agent of agents) {
+      const key = agent.group ?? 'default';
+      let entry = map.get(key);
+      if (!entry) {
+        entry = { group: key, agents: [], liveCount: 0, staleCount: 0, deadCount: 0 };
+        map.set(key, entry);
+      }
+      entry.agents.push(agent);
+      if (agent.status === 'LIVE') entry.liveCount++;
+      else if (agent.status === 'STALE') entry.staleCount++;
+      else entry.deadCount++;
+    }
+    return Array.from(map.values()).sort((a, b) => a.group.localeCompare(b.group));
+  }, [agents]);
+
+  const filtered = useMemo(() => {
+    if (!filter) return groups;
+    const lower = filter.toLowerCase();
+    return groups.filter((g) => g.group.toLowerCase().includes(lower));
+  }, [groups, filter]);
+
+  const sidebarClass = `${styles.sidebar} ${collapsed ? styles.sidebarCollapsed : ''}`;
+
+  return (
+    <aside className={sidebarClass}>
+      {/* Search */}
+      <div className={styles.search}>
+        <input
+          className={styles.searchInput}
+          type="text"
+          placeholder="Filter apps..."
+          value={filter}
+          onChange={(e) => setFilter(e.target.value)}
+        />
+      </div>
+
+      {/* App List */}
+      <div className={styles.appList}>
+        {/* All (unscoped) */}
+        <NavLink
+          to="/executions"
+          className={({ isActive }) =>
+            `${styles.appItem} ${isActive && !activeGroup ? styles.appItemActive : ''}`
+          }
+          title="All Applications"
+        >
+          <span className={styles.allIcon}>*</span>
+          <span className={styles.appInfo}>
+            <span className={styles.appName}>All</span>
+          </span>
+        </NavLink>
+
+        <div className={styles.divider} />
+
+        {/* App entries */}
+        {filtered.map((g) => {
+          const status = healthStatus(g);
+          const isActive = activeGroup === g.group;
+          return (
+            <NavLink
+              key={g.group}
+              to={`/apps/${encodeURIComponent(g.group)}`}
+              className={`${styles.appItem} ${isActive ? styles.appItemActive : ''}`}
+              title={g.group}
+            >
+              <span className={`${styles.healthDot} ${styles[`dot${status.charAt(0).toUpperCase()}${status.slice(1)}`]}`} />
+              <span className={styles.appInfo}>
+                <span className={styles.appName}>{g.group}</span>
+                <span className={styles.appMeta}>
+                  {g.agents.length} agent{g.agents.length !== 1 ? 's' : ''}
+                </span>
+              </span>
+            </NavLink>
+          );
+        })}
+      </div>
+
+      {/* Bottom: Admin */}
+      {roles.includes('ADMIN') && (
+        <div className={styles.bottom}>
+          <NavLink
+            to="/admin/oidc"
+            className={({ isActive }) =>
+              `${styles.bottomItem} ${isActive ? styles.bottomItemActive : ''}`
+            }
+            title="Admin"
+          >
+            <span className={styles.bottomIcon}>&#9881;</span>
+            <span className={styles.bottomLabel}>Admin</span>
+          </NavLink>
+        </div>
+      )}
+    </aside>
+  );
+}
diff --git a/ui/src/components/layout/TopNav.module.css b/ui/src/components/layout/TopNav.module.css
index d87c9cb0..9db6a912 100644
--- a/ui/src/components/layout/TopNav.module.css
+++ b/ui/src/components/layout/TopNav.module.css
@@ -5,11 +5,32 @@
   background: var(--topnav-bg);
   backdrop-filter: blur(20px) saturate(1.2);
   border-bottom: 1px solid var(--border-subtle);
-  padding: 0 24px;
+  padding: 0 16px;
   display: flex;
   align-items: center;
   height: 56px;
-  gap: 32px;
+  gap: 16px;
+}
+
+.hamburger {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 32px;
+  height: 32px;
+  border: 1px solid var(--border);
+  border-radius: var(--radius-sm);
+  background: none;
+  color: var(--text-muted);
+  cursor: pointer;
+  transition: all 0.15s;
+  flex-shrink: 0;
+}
+
+.hamburger:hover {
+  color: var(--text-primary);
+  border-color: var(--text-muted);
+  background: var(--bg-raised);
 }
 
 .logo {
@@ -27,38 +48,57 @@
 
 .logo:hover { color: var(--amber); }
 
-.navLinks {
+/* ─── Search Bar ─── */
+.searchBar {
+  flex: 1;
+  max-width: 480px;
   display: flex;
-  gap: 4px;
-  list-style: none;
-}
-
-.navLink {
-  padding: 8px 16px;
+  align-items: center;
+  gap: 8px;
+  padding: 6px 12px;
+  border: 1px solid var(--border);
   border-radius: var(--radius-sm);
-  font-size: 13px;
-  font-weight: 500;
-  color: var(--text-secondary);
-  transition: all 0.15s;
-  text-decoration: none;
-}
-
-.navLink:hover {
-  color: var(--text-primary);
   background: var(--bg-raised);
+  cursor: pointer;
+  transition: all 0.15s;
 }
 
-.navLinkActive {
-  composes: navLink;
-  color: var(--amber);
-  background: var(--amber-glow);
+.searchBar:hover {
+  border-color: var(--text-muted);
 }
 
+.searchIcon {
+  color: var(--text-muted);
+  flex-shrink: 0;
+}
+
+.searchPlaceholder {
+  flex: 1;
+  font-size: 13px;
+  color: var(--text-muted);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.searchKbd {
+  font-family: var(--font-mono);
+  font-size: 10px;
+  color: var(--text-muted);
+  background: var(--bg-surface);
+  border: 1px solid var(--border);
+  border-radius: 3px;
+  padding: 1px 5px;
+  flex-shrink: 0;
+}
+
+/* ─── Right Section ─── */
 .navRight {
   margin-left: auto;
   display: flex;
   align-items: center;
   gap: 16px;
+  flex-shrink: 0;
 }
 
 .utilLink {
@@ -136,3 +176,10 @@
 .logoutBtn:hover {
   color: var(--rose);
 }
+
+/* ─── Responsive ─── */
+@media (max-width: 768px) {
+  .searchBar {
+    display: none;
+  }
+}
diff --git a/ui/src/components/layout/TopNav.tsx b/ui/src/components/layout/TopNav.tsx
index 89f27dfa..a2ecad6a 100644
--- a/ui/src/components/layout/TopNav.tsx
+++ b/ui/src/components/layout/TopNav.tsx
@@ -1,14 +1,26 @@
 import { NavLink } from 'react-router';
 import { useThemeStore } from '../../theme/theme-store';
 import { useAuthStore } from '../../auth/auth-store';
+import { useCommandPalette } from '../command-palette/use-command-palette';
 import styles from './TopNav.module.css';
 
-export function TopNav() {
+interface TopNavProps {
+  onToggleSidebar: () => void;
+}
+
+export function TopNav({ onToggleSidebar }: TopNavProps) {
   const { theme, toggle } = useThemeStore();
-  const { username, roles, logout } = useAuthStore();
+  const { username, logout } = useAuthStore();
+  const openPalette = useCommandPalette((s) => s.open);
 
   return (
     <nav className={styles.topnav}>
+      <button className={styles.hamburger} onClick={onToggleSidebar} title="Toggle sidebar">
+        <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round">
+          <path d="M3 12h18M3 6h18M3 18h18" />
+        </svg>
+      </button>
+
       <NavLink to="/" className={styles.logo}>
         <svg width="22" height="22" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round">
           <path d="M12 2C6.5 2 2 6.5 2 12s4.5 10 10 10 10-4.5 10-10S17.5 2 12 2" />
@@ -17,25 +29,15 @@ export function TopNav() {
         cameleer3
       </NavLink>
 
-      <ul className={styles.navLinks}>
-        <li>
-          <NavLink to="/executions" className={({ isActive }) => isActive ? styles.navLinkActive : styles.navLink}>
-            Transactions
-          </NavLink>
-        </li>
-        <li>
-          <NavLink to="/apps" className={({ isActive }) => isActive ? styles.navLinkActive : styles.navLink}>
-            Applications
-          </NavLink>
-        </li>
-        {roles.includes('ADMIN') && (
-          <li>
-            <NavLink to="/admin/oidc" className={({ isActive }) => isActive ? styles.navLinkActive : styles.navLink}>
-              Admin
-            </NavLink>
-          </li>
-        )}
-      </ul>
+      {/* Visible search bar */}
+      <div className={styles.searchBar} onClick={openPalette} role="button" tabIndex={0} onKeyDown={(e) => { if (e.key === 'Enter' || e.key === ' ') openPalette(); }}>
+        <svg className={styles.searchIcon} width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
+          <circle cx="11" cy="11" r="8" />
+          <path d="M21 21l-4.35-4.35" />
+        </svg>
+        <span className={styles.searchPlaceholder}>Search executions, orders...</span>
+        <kbd className={styles.searchKbd}>&#8984;K</kbd>
+      </div>
 
       <div className={styles.navRight}>
         <NavLink to="/swagger" className={({ isActive }) => isActive ? styles.utilLinkActive : styles.utilLink} title="API Documentation">
diff --git a/ui/src/components/shared/ResizableDivider.tsx b/ui/src/components/shared/ResizableDivider.tsx
new file mode 100644
index 00000000..a3d3a34a
--- /dev/null
+++ b/ui/src/components/shared/ResizableDivider.tsx
@@ -0,0 +1,73 @@
+import { useCallback, useRef, useEffect } from 'react';
+
+interface ResizableDividerProps {
+  /** Current panel width in pixels */
+  panelWidth: number;
+  /** Called with new width */
+  onResize: (width: number) => void;
+  /** Min panel width */
+  minWidth?: number;
+  /** Max panel width */
+  maxWidth?: number;
+}
+
+export function ResizableDivider({
+  panelWidth,
+  onResize,
+  minWidth = 200,
+  maxWidth = 600,
+}: ResizableDividerProps) {
+  const dragging = useRef(false);
+  const startX = useRef(0);
+  const startWidth = useRef(0);
+
+  const handleMouseDown = useCallback((e: React.MouseEvent) => {
+    e.preventDefault();
+    dragging.current = true;
+    startX.current = e.clientX;
+    startWidth.current = panelWidth;
+    document.body.style.cursor = 'col-resize';
+    document.body.style.userSelect = 'none';
+  }, [panelWidth]);
+
+  useEffect(() => {
+    function handleMouseMove(e: MouseEvent) {
+      if (!dragging.current) return;
+      // Dragging left increases panel width (panel is on the right)
+      const delta = startX.current - e.clientX;
+      const newWidth = Math.min(maxWidth, Math.max(minWidth, startWidth.current + delta));
+      onResize(newWidth);
+    }
+
+    function handleMouseUp() {
+      if (!dragging.current) return;
+      dragging.current = false;
+      document.body.style.cursor = '';
+      document.body.style.userSelect = '';
+    }
+
+    document.addEventListener('mousemove', handleMouseMove);
+    document.addEventListener('mouseup', handleMouseUp);
+    return () => {
+      document.removeEventListener('mousemove', handleMouseMove);
+      document.removeEventListener('mouseup', handleMouseUp);
+    };
+  }, [onResize, minWidth, maxWidth]);
+
+  return (
+    <div
+      onMouseDown={handleMouseDown}
+      style={{
+        width: 6,
+        cursor: 'col-resize',
+        background: 'var(--border-subtle)',
+        flexShrink: 0,
+        position: 'relative',
+        zIndex: 5,
+        transition: 'background 0.15s',
+      }}
+      onMouseEnter={(e) => { (e.currentTarget as HTMLElement).style.background = 'var(--amber)'; }}
+      onMouseLeave={(e) => { if (!dragging.current) (e.currentTarget as HTMLElement).style.background = 'var(--border-subtle)'; }}
+    />
+  );
+}
diff --git a/ui/src/pages/apps/ApplicationsPage.module.css b/ui/src/pages/apps/ApplicationsPage.module.css
deleted file mode 100644
index 94843f7d..00000000
--- a/ui/src/pages/apps/ApplicationsPage.module.css
+++ /dev/null
@@ -1,132 +0,0 @@
-.pageHeader {
-  margin-bottom: 24px;
-}
-
-.pageHeader h1 {
-  font-size: 22px;
-  font-weight: 600;
-  letter-spacing: -0.5px;
-}
-
-.subtitle {
-  color: var(--text-muted);
-  font-size: 13px;
-  margin-top: 4px;
-}
-
-.grid {
-  display: grid;
-  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
-  gap: 16px;
-}
-
-.card {
-  background: var(--bg-surface);
-  border: 1px solid var(--border-subtle);
-  border-radius: var(--radius-md);
-  padding: 20px;
-  transition: border-color 0.15s;
-}
-
-.card:hover {
-  border-color: var(--border);
-}
-
-.cardHeader {
-  display: flex;
-  align-items: center;
-  gap: 10px;
-  margin-bottom: 12px;
-}
-
-.statusDot {
-  width: 10px;
-  height: 10px;
-  border-radius: 50%;
-  flex-shrink: 0;
-}
-
-.live { background: var(--green); }
-.stale { background: var(--amber); }
-.dead { background: var(--text-muted); }
-
-.groupName {
-  font-family: var(--font-mono);
-  font-size: 15px;
-  font-weight: 600;
-  color: var(--text-primary);
-}
-
-.agentCount {
-  margin-left: auto;
-  font-size: 12px;
-  color: var(--text-muted);
-}
-
-.statusBar {
-  display: flex;
-  gap: 12px;
-  font-size: 12px;
-  margin-bottom: 14px;
-}
-
-.statusLive { color: var(--green); }
-.statusStale { color: var(--amber); }
-.statusDead { color: var(--text-muted); }
-
-.routes {
-  border-top: 1px solid var(--border-subtle);
-  padding-top: 12px;
-}
-
-.routesLabel {
-  font-size: 10px;
-  font-weight: 600;
-  text-transform: uppercase;
-  letter-spacing: 0.8px;
-  color: var(--text-muted);
-  display: block;
-  margin-bottom: 8px;
-}
-
-.routeList {
-  list-style: none;
-  margin: 0;
-  padding: 0;
-  display: flex;
-  flex-wrap: wrap;
-  gap: 6px;
-}
-
-.routeLink {
-  display: inline-block;
-  padding: 3px 10px;
-  border-radius: var(--radius-sm);
-  background: var(--bg-raised);
-  border: 1px solid var(--border-subtle);
-  font-family: var(--font-mono);
-  font-size: 12px;
-  color: var(--text-secondary);
-  text-decoration: none;
-  transition: all 0.15s;
-}
-
-.routeLink:hover {
-  color: var(--amber);
-  border-color: var(--amber-dim);
-  background: var(--amber-glow);
-}
-
-.loading,
-.empty {
-  text-align: center;
-  padding: 60px 20px;
-  color: var(--text-muted);
-  font-size: 14px;
-}
-
-@media (max-width: 768px) {
-  .grid {
-    grid-template-columns: 1fr;
-  }
-}
diff --git a/ui/src/pages/apps/ApplicationsPage.tsx b/ui/src/pages/apps/ApplicationsPage.tsx
deleted file mode 100644
index 28e71dcd..00000000
--- a/ui/src/pages/apps/ApplicationsPage.tsx
+++ /dev/null
@@ -1,107 +0,0 @@
-import { useMemo } from 'react';
-import { Link } from 'react-router';
-import { useAgents } from '../../api/queries/agents';
-import type { AgentInstance } from '../../api/types';
-import styles from './ApplicationsPage.module.css';
-
-interface GroupInfo {
-  group: string;
-  agents: AgentInstance[];
-  routeIds: string[];
-  liveCount: number;
-  staleCount: number;
-  deadCount: number;
-}
-
-function groupStatus(g: GroupInfo): 'live' | 'stale' | 'dead' {
-  if (g.liveCount > 0) return 'live';
-  if (g.staleCount > 0) return 'stale';
-  return 'dead';
-}
-
-export function ApplicationsPage() {
-  const { data: agents, isLoading } = useAgents();
-
-  const groups = useMemo(() => {
-    if (!agents) return [];
-    const map = new Map<string, GroupInfo>();
-    for (const agent of agents) {
-      const key = agent.group ?? 'default';
-      let entry = map.get(key);
-      if (!entry) {
-        entry = { group: key, agents: [], routeIds: [], liveCount: 0, staleCount: 0, deadCount: 0 };
-        map.set(key, entry);
-      }
-      entry.agents.push(agent);
-      if (agent.status === 'LIVE') entry.liveCount++;
-      else if (agent.status === 'STALE') entry.staleCount++;
-      else entry.deadCount++;
-
-      // Collect unique routeIds
-      if (agent.routeIds) {
-        for (const rid of agent.routeIds) {
-          if (!entry.routeIds.includes(rid)) entry.routeIds.push(rid);
-        }
-      }
-    }
-    return Array.from(map.values()).sort((a, b) => a.group.localeCompare(b.group));
-  }, [agents]);
-
-  if (isLoading) {
-    return <div className={styles.loading}>Loading applications...</div>;
-  }
-
-  return (
-    <>
-      <div className={`${styles.pageHeader} animate-in`}>
-        <h1>Applications</h1>
-        <div className={styles.subtitle}>Monitored Camel applications and their routes</div>
-      </div>
-
-      {groups.length === 0 ? (
-        <div className={styles.empty}>No applications found. Agents will appear here once they connect.</div>
-      ) : (
-        <div className={styles.grid}>
-          {groups.map((g) => {
-            const status = groupStatus(g);
-            return (
-              <div key={g.group} className={styles.card}>
-                <div className={styles.cardHeader}>
-                  <div className={`${styles.statusDot} ${styles[status]}`} />
-                  <span className={styles.groupName}>{g.group}</span>
-                  <span className={styles.agentCount}>
-                    {g.agents.length} instance{g.agents.length !== 1 ? 's' : ''}
-                  </span>
-                </div>
-
-                <div className={styles.statusBar}>
-                  {g.liveCount > 0 && <span className={styles.statusLive}>{g.liveCount} live</span>}
-                  {g.staleCount > 0 && <span className={styles.statusStale}>{g.staleCount} stale</span>}
-                  {g.deadCount > 0 && <span className={styles.statusDead}>{g.deadCount} dead</span>}
-                </div>
-
-                {g.routeIds.length > 0 && (
-                  <div className={styles.routes}>
-                    <span className={styles.routesLabel}>Routes</span>
-                    <ul className={styles.routeList}>
-                      {g.routeIds.map((rid) => (
-                        <li key={rid}>
-                          <Link
-                            to={`/apps/${encodeURIComponent(g.group)}/routes/${encodeURIComponent(rid)}`}
-                            className={styles.routeLink}
-                          >
-                            {rid}
-                          </Link>
-                        </li>
-                      ))}
-                    </ul>
-                  </div>
-                )}
-              </div>
-            );
-          })}
-        </div>
-      )}
-    </>
-  );
-}
diff --git a/ui/src/pages/dashboard/AppScopedView.module.css b/ui/src/pages/dashboard/AppScopedView.module.css
new file mode 100644
index 00000000..88511cbe
--- /dev/null
+++ b/ui/src/pages/dashboard/AppScopedView.module.css
@@ -0,0 +1,214 @@
+/* ─── Breadcrumb ─── */
+.breadcrumb {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin-bottom: 16px;
+  font-size: 12px;
+}
+
+.breadcrumbLink {
+  color: var(--text-muted);
+  text-decoration: none;
+  transition: color 0.15s;
+}
+
+.breadcrumbLink:hover {
+  color: var(--amber);
+}
+
+.breadcrumbSep {
+  color: var(--text-muted);
+  opacity: 0.5;
+}
+
+.breadcrumbCurrent {
+  color: var(--text-primary);
+  font-family: var(--font-mono);
+  font-weight: 500;
+}
+
+/* ─── App Header ─── */
+.appHeader {
+  position: relative;
+  margin-bottom: 20px;
+  padding: 16px 20px;
+  background: var(--bg-surface);
+  border: 1px solid var(--border-subtle);
+  border-radius: var(--radius-md);
+  overflow: hidden;
+}
+
+.appHeader::before {
+  content: '';
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  height: 3px;
+  background: linear-gradient(90deg, var(--amber), var(--cyan));
+}
+
+.appTitle {
+  font-family: var(--font-mono);
+  font-size: 20px;
+  font-weight: 600;
+  color: var(--text-primary);
+  letter-spacing: -0.5px;
+}
+
+.agentSummary {
+  display: flex;
+  gap: 12px;
+  margin-top: 6px;
+  font-size: 12px;
+}
+
+.agentLive { color: var(--green); }
+.agentStale { color: var(--amber); }
+.agentDead { color: var(--text-muted); }
+
+/* ─── Stats Bar ─── */
+.statsBar {
+  display: grid;
+  grid-template-columns: repeat(5, 1fr);
+  gap: 12px;
+  margin-bottom: 20px;
+}
+
+/* ─── Route Chips ─── */
+.routeChips {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  margin-bottom: 16px;
+}
+
+.routeChip {
+  padding: 4px 12px;
+  border: 1px solid var(--border);
+  border-radius: 99px;
+  background: none;
+  color: var(--text-secondary);
+  font-size: 12px;
+  font-family: var(--font-mono);
+  cursor: pointer;
+  transition: all 0.15s;
+}
+
+.routeChip:hover {
+  background: var(--bg-raised);
+  color: var(--text-primary);
+  border-color: var(--text-muted);
+}
+
+.routeChipActive {
+  background: var(--amber-glow);
+  color: var(--amber);
+  border-color: rgba(245, 158, 11, 0.3);
+}
+
+/* ─── Results Header ─── */
+.resultsHeader {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 8px;
+  padding: 0 4px;
+}
+
+.resultsCount {
+  font-size: 12px;
+  color: var(--text-muted);
+  font-family: var(--font-mono);
+}
+
+.resultsCount strong {
+  color: var(--text-secondary);
+}
+
+/* ─── Filter Bar ─── */
+.filterBar {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  margin-bottom: 16px;
+  flex-wrap: wrap;
+}
+
+.filterGroup {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+}
+
+.filterLabel {
+  font-size: 11px;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+  color: var(--text-muted);
+}
+
+/* ─── Live Toggle ─── */
+.liveToggle {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+  font-family: var(--font-mono);
+  font-weight: 500;
+  background: none;
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  padding: 6px 14px;
+  cursor: pointer;
+  transition: all 0.15s ease;
+  margin-left: auto;
+}
+
+.liveOn {
+  color: var(--green);
+  border-color: var(--green);
+}
+
+.liveOff {
+  color: var(--text-muted);
+}
+
+.liveDot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+}
+
+.liveOn .liveDot {
+  background: var(--green);
+  animation: livePulse 2s ease-in-out infinite;
+}
+
+.liveOff .liveDot {
+  background: var(--text-muted);
+}
+
+@keyframes livePulse {
+  0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
+  50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
+}
+
+/* ─── Loading / Empty ─── */
+.loading {
+  color: var(--text-muted);
+  text-align: center;
+  padding: 60px 20px;
+  font-size: 14px;
+}
+
+/* ─── Responsive ─── */
+@media (max-width: 1200px) {
+  .statsBar { grid-template-columns: repeat(3, 1fr); }
+}
+
+@media (max-width: 768px) {
+  .statsBar { grid-template-columns: 1fr 1fr; }
+}
diff --git a/ui/src/pages/dashboard/AppScopedView.tsx b/ui/src/pages/dashboard/AppScopedView.tsx
new file mode 100644
index 00000000..1041fb48
--- /dev/null
+++ b/ui/src/pages/dashboard/AppScopedView.tsx
@@ -0,0 +1,184 @@
+import { useState, useMemo, useCallback } from 'react';
+import { useParams, useNavigate, NavLink } from 'react-router';
+import { useAgents } from '../../api/queries/agents';
+import { useSearchExecutions, useExecutionStats, useStatsTimeseries } from '../../api/queries/executions';
+import { StatCard } from '../../components/shared/StatCard';
+import { ResultsTable } from '../executions/ResultsTable';
+import { Pagination } from '../../components/shared/Pagination';
+import { FilterChip } from '../../components/shared/FilterChip';
+import type { SearchRequest } from '../../api/types';
+import styles from './AppScopedView.module.css';
+
+function todayMidnight(): string {
+  const d = new Date();
+  d.setHours(0, 0, 0, 0);
+  const pad = (n: number) => n.toString().padStart(2, '0');
+  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())}T00:00`;
+}
+
+function formatCompact(n: number): string {
+  if (n >= 1_000_000) return `${(n / 1_000_000).toFixed(1)}M`;
+  if (n >= 1_000) return `${(n / 1_000).toFixed(1)}K`;
+  return n.toLocaleString();
+}
+
+function pctChange(current: number, previous: number): { text: string; direction: 'up' | 'down' | 'neutral' } {
+  if (previous === 0) return { text: 'no prior data', direction: 'neutral' };
+  const pct = ((current - previous) / previous) * 100;
+  if (Math.abs(pct) < 0.5) return { text: '~0% vs yesterday', direction: 'neutral' };
+  const arrow = pct > 0 ? '\u2191' : '\u2193';
+  return { text: `${arrow} ${Math.abs(pct).toFixed(1)}% vs yesterday`, direction: pct > 0 ? 'up' : 'down' };
+}
+
+export function AppScopedView() {
+  const { group } = useParams<{ group: string }>();
+  const navigate = useNavigate();
+  const { data: agents } = useAgents();
+  const [selectedRoute, setSelectedRoute] = useState<string | null>(null);
+  const [status, setStatus] = useState<string[]>(['COMPLETED', 'FAILED']);
+  const [live, setLive] = useState(true);
+  const [offset, setOffset] = useState(0);
+  const limit = 25;
+
+  // Find agents belonging to this group
+  const groupAgents = useMemo(() => {
+    if (!agents || !group) return [];
+    return agents.filter((a) => (a.group ?? 'default') === group);
+  }, [agents, group]);
+
+  const liveCount = groupAgents.filter((a) => a.status === 'LIVE').length;
+  const staleCount = groupAgents.filter((a) => a.status === 'STALE').length;
+  const deadCount = groupAgents.filter((a) => a.status === 'DEAD').length;
+
+  // Collect unique routes from agents
+  const routeIds = useMemo(() => {
+    const set = new Set<string>();
+    for (const a of groupAgents) {
+      if (a.routeIds) for (const rid of a.routeIds) set.add(rid);
+    }
+    return Array.from(set).sort();
+  }, [groupAgents]);
+
+  // Build search request scoped to this group
+  const timeFrom = todayMidnight();
+  const timeFromIso = new Date(timeFrom).toISOString();
+
+  const searchRequest: SearchRequest = useMemo(() => ({
+    group: group || undefined,
+    routeId: selectedRoute || undefined,
+    status: status.length > 0 && status.length < 3 ? status.join(',') : undefined,
+    timeFrom: timeFromIso,
+    offset,
+    limit,
+    sortField: 'startTime',
+    sortDir: 'desc',
+  }), [group, selectedRoute, status, timeFromIso, offset, limit]);
+
+  const { data, isLoading, isFetching } = useSearchExecutions(searchRequest, live);
+  const { data: stats } = useExecutionStats(timeFromIso, undefined, selectedRoute || undefined, group);
+  const { data: timeseries } = useStatsTimeseries(timeFromIso, undefined, selectedRoute || undefined, group);
+
+  const sparkTotal = timeseries?.buckets.map((b) => b.totalCount) ?? [];
+  const sparkFailed = timeseries?.buckets.map((b) => b.failedCount) ?? [];
+  const sparkAvgDuration = timeseries?.buckets.map((b) => b.avgDurationMs) ?? [];
+  const sparkP99 = timeseries?.buckets.map((b) => b.p99DurationMs) ?? [];
+  const sparkActive = timeseries?.buckets.map((b) => b.activeCount) ?? [];
+
+  const total = data?.total ?? 0;
+  const results = data?.data ?? [];
+
+  const failureRate = stats && stats.totalCount > 0
+    ? (stats.failedCount / stats.totalCount) * 100 : 0;
+  const prevFailureRate = stats && stats.prevTotalCount > 0
+    ? (stats.prevFailedCount / stats.prevTotalCount) * 100 : 0;
+
+  const avgChange = stats ? pctChange(stats.avgDurationMs, stats.prevAvgDurationMs) : null;
+  const failRateChange = stats ? pctChange(failureRate, prevFailureRate) : null;
+  const p99Change = stats ? pctChange(stats.p99LatencyMs, stats.prevP99LatencyMs) : null;
+
+  const showFrom = total > 0 ? offset + 1 : 0;
+  const showTo = Math.min(offset + limit, total);
+
+  const toggleRoute = useCallback((rid: string) => {
+    setSelectedRoute((prev) => prev === rid ? null : rid);
+    setOffset(0);
+  }, []);
+
+  if (!group) {
+    return <div className={styles.loading}>Missing group parameter</div>;
+  }
+
+  return (
+    <>
+      {/* Breadcrumb */}
+      <nav className={styles.breadcrumb}>
+        <NavLink to="/executions" className={styles.breadcrumbLink}>All</NavLink>
+        <span className={styles.breadcrumbSep}>/</span>
+        <span className={styles.breadcrumbCurrent}>{group}</span>
+      </nav>
+
+      {/* App Header */}
+      <div className={styles.appHeader}>
+        <div className={styles.appTitle}>{group}</div>
+        <div className={styles.agentSummary}>
+          {liveCount > 0 && <span className={styles.agentLive}>{liveCount} live</span>}
+          {staleCount > 0 && <span className={styles.agentStale}>{staleCount} stale</span>}
+          {deadCount > 0 && <span className={styles.agentDead}>{deadCount} dead</span>}
+          {groupAgents.length === 0 && <span className={styles.agentDead}>no agents</span>}
+        </div>
+      </div>
+
+      {/* Stats Bar */}
+      <div className={styles.statsBar}>
+        <StatCard label="Total Matches" value={total.toLocaleString()} accent="amber" change={stats ? `of ${formatCompact(stats.totalToday)} today` : 'from current search'} sparkData={sparkTotal} />
+        <StatCard label="Avg Duration" value={stats ? `${stats.avgDurationMs.toLocaleString()}ms` : '--'} accent="cyan" change={avgChange?.text} changeDirection={avgChange?.direction} sparkData={sparkAvgDuration} />
+        <StatCard label="Failure Rate" value={stats ? `${failureRate.toFixed(1)}%` : '--'} accent="rose" change={failRateChange?.text} changeDirection={failRateChange?.direction} sparkData={sparkFailed} />
+        <StatCard label="P99 Latency" value={stats ? `${stats.p99LatencyMs.toLocaleString()}ms` : '--'} accent="green" change={p99Change?.text} changeDirection={p99Change?.direction} sparkData={sparkP99} />
+        <StatCard label="In-Flight" value={stats ? stats.activeCount.toLocaleString() : '--'} accent="blue" change="running executions" sparkData={sparkActive} />
+      </div>
+
+      {/* Route Chips + Status Filters */}
+      <div className={styles.filterBar}>
+        <div className={styles.filterGroup}>
+          <label className={styles.filterLabel}>Status</label>
+          <FilterChip label="Completed" accent="green" active={status.includes('COMPLETED')} onClick={() => setStatus((s) => s.includes('COMPLETED') ? s.filter((x) => x !== 'COMPLETED') : [...s, 'COMPLETED'])} />
+          <FilterChip label="Failed" accent="rose" active={status.includes('FAILED')} onClick={() => setStatus((s) => s.includes('FAILED') ? s.filter((x) => x !== 'FAILED') : [...s, 'FAILED'])} />
+          <FilterChip label="Running" accent="blue" active={status.includes('RUNNING')} onClick={() => setStatus((s) => s.includes('RUNNING') ? s.filter((x) => x !== 'RUNNING') : [...s, 'RUNNING'])} />
+        </div>
+        <button className={`${styles.liveToggle} ${live ? styles.liveOn : styles.liveOff}`} onClick={() => setLive(!live)}>
+          <span className={styles.liveDot} />
+          {live ? 'LIVE' : 'PAUSED'}
+        </button>
+      </div>
+
+      {/* Route Chips */}
+      {routeIds.length > 0 && (
+        <div className={styles.routeChips}>
+          {routeIds.map((rid) => (
+            <button
+              key={rid}
+              className={`${styles.routeChip} ${selectedRoute === rid ? styles.routeChipActive : ''}`}
+              onClick={() => toggleRoute(rid)}
+            >
+              {rid}
+            </button>
+          ))}
+        </div>
+      )}
+
+      {/* Results Header */}
+      <div className={styles.resultsHeader}>
+        <span className={styles.resultsCount}>
+          Showing <strong>{showFrom}–{showTo}</strong> of <strong>{total.toLocaleString()}</strong> results
+          {isFetching && !isLoading && ' · updating...'}
+        </span>
+      </div>
+
+      {/* Results Table */}
+      <ResultsTable results={results} loading={isLoading} />
+
+      {/* Pagination */}
+      <Pagination total={total} offset={offset} limit={limit} onChange={setOffset} />
+    </>
+  );
+}
diff --git a/ui/src/pages/routes/DiagramTab.tsx b/ui/src/pages/routes/DiagramTab.tsx
index 4b622dd4..1e8b760d 100644
--- a/ui/src/pages/routes/DiagramTab.tsx
+++ b/ui/src/pages/routes/DiagramTab.tsx
@@ -1,26 +1,87 @@
+import { useState, useCallback } from 'react';
 import type { DiagramLayout, ExecutionDetail } from '../../api/types';
 import type { OverlayState } from '../../hooks/useExecutionOverlay';
 import { DiagramCanvas } from './diagram/DiagramCanvas';
 import { ProcessorDetailPanel } from './diagram/ProcessorDetailPanel';
+import { ProcessorTree } from '../executions/ProcessorTree';
+import { ResizableDivider } from '../../components/shared/ResizableDivider';
 import styles from './diagram/diagram.module.css';
 
+const PANEL_WIDTH_KEY = 'cameleer-diagram-panel-width';
+const DEFAULT_WIDTH = 340;
+
+type DetailMode = 'inspector' | 'tree';
+
 interface DiagramTabProps {
   layout: DiagramLayout;
   overlay: OverlayState;
   execution: ExecutionDetail | null | undefined;
+  executionId?: string | null;
 }
 
-export function DiagramTab({ layout, overlay, execution }: DiagramTabProps) {
+export function DiagramTab({ layout, overlay, execution, executionId }: DiagramTabProps) {
+  const [panelWidth, setPanelWidth] = useState(() => {
+    try {
+      const saved = localStorage.getItem(PANEL_WIDTH_KEY);
+      return saved ? Number(saved) : DEFAULT_WIDTH;
+    } catch { return DEFAULT_WIDTH; }
+  });
+  const [detailMode, setDetailMode] = useState<DetailMode>('inspector');
+
+  const handleResize = useCallback((width: number) => {
+    setPanelWidth(width);
+    try { localStorage.setItem(PANEL_WIDTH_KEY, String(width)); }
+    catch { /* ignore */ }
+  }, []);
+
+  const showPanel = overlay.isActive && execution;
+
   return (
     <div className={styles.splitLayout}>
       <div className={styles.diagramSide}>
         <DiagramCanvas layout={layout} overlay={overlay} />
       </div>
-      {overlay.isActive && execution && (
-        <ProcessorDetailPanel
-          execution={execution}
-          selectedNodeId={overlay.selectedNodeId}
-        />
+      {showPanel && (
+        <>
+          <ResizableDivider
+            panelWidth={panelWidth}
+            onResize={handleResize}
+            minWidth={240}
+            maxWidth={600}
+          />
+          <div className={styles.sidePanel} style={{ width: panelWidth }}>
+            {/* Mode toggle */}
+            <div className={styles.detailModeTabs}>
+              <button
+                className={`${styles.detailModeTab} ${detailMode === 'inspector' ? styles.detailModeTabActive : ''}`}
+                onClick={() => setDetailMode('inspector')}
+              >
+                Inspector
+              </button>
+              <button
+                className={`${styles.detailModeTab} ${detailMode === 'tree' ? styles.detailModeTabActive : ''}`}
+                onClick={() => setDetailMode('tree')}
+              >
+                Tree
+              </button>
+            </div>
+
+            {detailMode === 'inspector' ? (
+              <ProcessorDetailPanel
+                execution={execution}
+                selectedNodeId={overlay.selectedNodeId}
+              />
+            ) : (
+              executionId ? (
+                <div className={styles.treeContainer}>
+                  <ProcessorTree executionId={executionId} />
+                </div>
+              ) : (
+                <div className={styles.detailEmpty}>Select an execution to view the processor tree</div>
+              )
+            )}
+          </div>
+        </>
       )}
     </div>
   );
diff --git a/ui/src/pages/routes/RoutePage.tsx b/ui/src/pages/routes/RoutePage.tsx
index 55327feb..29d0a683 100644
--- a/ui/src/pages/routes/RoutePage.tsx
+++ b/ui/src/pages/routes/RoutePage.tsx
@@ -6,12 +6,11 @@ import { useExecutionOverlay } from '../../hooks/useExecutionOverlay';
 import { RouteHeader } from './RouteHeader';
 import { DiagramTab } from './DiagramTab';
 import { PerformanceTab } from './PerformanceTab';
-import { ProcessorTree } from '../executions/ProcessorTree';
 import { ExchangeTab } from './ExchangeTab';
 import { ExecutionPicker } from './diagram/ExecutionPicker';
 import styles from './RoutePage.module.css';
 
-type Tab = 'diagram' | 'performance' | 'processors' | 'exchange';
+type Tab = 'diagram' | 'performance' | 'exchange';
 
 export function RoutePage() {
   const { group, routeId } = useParams<{ group: string; routeId: string }>();
@@ -54,16 +53,16 @@ export function RoutePage() {
     return <div className={styles.error}>Missing group or routeId parameters</div>;
   }
 
-  const needsExecPicker = activeTab === 'diagram' || activeTab === 'processors' || activeTab === 'exchange';
+  const needsExecPicker = activeTab === 'diagram' || activeTab === 'exchange';
 
   return (
     <>
       {/* Breadcrumb */}
       <nav className={styles.breadcrumb}>
         <button className={styles.backBtn} onClick={goBack} title="Back (Backspace)">&larr;</button>
-        <NavLink to="/executions" className={styles.breadcrumbLink}>Transactions</NavLink>
+        <NavLink to="/executions" className={styles.breadcrumbLink}>All</NavLink>
         <span className={styles.breadcrumbSep}>/</span>
-        <span className={styles.breadcrumbText}>{group}</span>
+        <NavLink to={`/apps/${encodeURIComponent(group)}`} className={styles.breadcrumbLink}>{group}</NavLink>
         <span className={styles.breadcrumbSep}>/</span>
         <span className={styles.breadcrumbCurrent}>{routeId}</span>
       </nav>
@@ -86,12 +85,6 @@ export function RoutePage() {
           >
             Performance
           </button>
-          <button
-            className={`${styles.tab} ${activeTab === 'processors' ? styles.tabActive : ''}`}
-            onClick={() => setActiveTab('processors')}
-          >
-            Processor Tree
-          </button>
           <button
             className={`${styles.tab} ${activeTab === 'exchange' ? styles.tabActive : ''}`}
             onClick={() => setActiveTab('exchange')}
@@ -128,7 +121,7 @@ export function RoutePage() {
         layoutLoading ? (
           <div className={styles.loading}>Loading diagram...</div>
         ) : layout ? (
-          <DiagramTab layout={layout} overlay={overlay} execution={execution} />
+          <DiagramTab layout={layout} overlay={overlay} execution={execution} executionId={execId} />
         ) : (
           <div className={styles.emptyState}>No diagram available for this route</div>
         )
@@ -138,16 +131,6 @@ export function RoutePage() {
         <PerformanceTab group={group} routeId={routeId} />
       )}
 
-      {activeTab === 'processors' && execId && (
-        <ProcessorTree executionId={execId} />
-      )}
-
-      {activeTab === 'processors' && !execId && (
-        <div className={styles.emptyState}>
-          Select an execution to view the processor tree
-        </div>
-      )}
-
       {activeTab === 'exchange' && execId && (
         <ExchangeTab executionId={execId} />
       )}
diff --git a/ui/src/pages/routes/diagram/diagram.module.css b/ui/src/pages/routes/diagram/diagram.module.css
index 16efb2fd..997b48b8 100644
--- a/ui/src/pages/routes/diagram/diagram.module.css
+++ b/ui/src/pages/routes/diagram/diagram.module.css
@@ -100,7 +100,7 @@
 .splitLayout {
   display: flex;
   gap: 0;
-  height: 100%;
+  height: calc(100vh - 56px - 200px);
   min-height: 500px;
 }
 
@@ -111,12 +111,20 @@
   flex-direction: column;
 }
 
-/* ─── Processor Detail Panel ─── */
-.detailPanel {
-  width: 340px;
+/* ─── Side Panel (wraps mode tabs + detail/tree) ─── */
+.sidePanel {
   flex-shrink: 0;
   background: var(--bg-surface);
-  border-left: 1px solid var(--border-subtle);
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+/* ─── Processor Detail Panel ─── */
+.detailPanel {
+  flex: 1;
+  min-height: 0;
+  background: var(--bg-surface);
   padding: 16px;
   overflow-y: auto;
   display: flex;
@@ -124,6 +132,41 @@
   gap: 16px;
 }
 
+/* ─── Detail Mode Tabs ─── */
+.detailModeTabs {
+  display: flex;
+  border-bottom: 1px solid var(--border-subtle);
+  flex-shrink: 0;
+}
+
+.detailModeTab {
+  flex: 1;
+  padding: 8px 16px;
+  border: none;
+  background: none;
+  color: var(--text-muted);
+  font-size: 12px;
+  font-weight: 500;
+  cursor: pointer;
+  border-bottom: 2px solid transparent;
+  transition: all 0.15s;
+}
+
+.detailModeTab:hover {
+  color: var(--text-secondary);
+}
+
+.detailModeTabActive {
+  color: var(--amber);
+  border-bottom-color: var(--amber);
+}
+
+.treeContainer {
+  flex: 1;
+  overflow-y: auto;
+  padding: 8px;
+}
+
 .detailEmpty {
   color: var(--text-muted);
   font-size: 13px;
@@ -584,6 +627,12 @@
     flex-direction: column;
   }
 
+  .sidePanel {
+    width: 100% !important;
+    max-height: 300px;
+    border-top: 1px solid var(--border-subtle);
+  }
+
   .detailPanel {
     width: 100%;
     max-height: 300px;
diff --git a/ui/src/pages/swagger/SwaggerPage.module.css b/ui/src/pages/swagger/SwaggerPage.module.css
index 6ea1f1de..7d7dbdb1 100644
--- a/ui/src/pages/swagger/SwaggerPage.module.css
+++ b/ui/src/pages/swagger/SwaggerPage.module.css
@@ -1,5 +1,4 @@
 .container {
-  max-width: 1440px;
-  margin: 0 auto;
+  margin: 0;
   padding: 24px;
 }
diff --git a/ui/src/router.tsx b/ui/src/router.tsx
index 5f4cc94b..406bbbcb 100644
--- a/ui/src/router.tsx
+++ b/ui/src/router.tsx
@@ -7,7 +7,7 @@ import { OidcCallback } from './auth/OidcCallback';
 import { ExecutionExplorer } from './pages/executions/ExecutionExplorer';
 import { OidcAdminPage } from './pages/admin/OidcAdminPage';
 import { RoutePage } from './pages/routes/RoutePage';
-import { ApplicationsPage } from './pages/apps/ApplicationsPage';
+import { AppScopedView } from './pages/dashboard/AppScopedView';
 
 const SwaggerPage = lazy(() => import('./pages/swagger/SwaggerPage').then(m => ({ default: m.SwaggerPage })));
 
@@ -28,7 +28,7 @@ export const router = createBrowserRouter([
         children: [
           { index: true, element: <Navigate to="/executions" replace /> },
           { path: 'executions', element: <ExecutionExplorer /> },
-          { path: 'apps', element: <ApplicationsPage /> },
+          { path: 'apps/:group', element: <AppScopedView /> },
           { path: 'apps/:group/routes/:routeId', element: <RoutePage /> },
           { path: 'admin/oidc', element: <OidcAdminPage /> },
           { path: 'swagger', element: <Suspense fallback={null}><SwaggerPage /></Suspense> },