Retire the Dashboard tab; Processes is the front page

The app repeated itself. The module list, /api/prefs/dashboard, applyPrefs and the
per-user dashboard blob are gone. Widgets stays and now says plainly that it is for
dashboards outside Ham Lab.

This also closes a bug: applyPrefs set the sampling rate from intervalMs inside the
dashboard layout, and reset it to the default when that field was absent — so with
per-user layouts, one account saving a dashboard could reset the sampling rate for the
whole machine. The sampler now has one source.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

web/src/Shell.tsx

@@ -4,7 +4,6 @@ import Rail, { Group } from './Rail'
 import TerminalPane, { TermHandle } from './TerminalPane'
 import TermTabs from './TermTabs'
 import KeyBar from './KeyBar'
-import Dashboard from './Dashboard'
 import Gallery from './Gallery'
 import Docker from './Docker'
 import Alerts from './Alerts'
@@ -51,7 +50,6 @@ const BellIcon = (
 )
 
 const GROUPS: Group[] = [
-  { id: 'dashboard', label: 'Dashboard', icon: '◔' },
   { id: 'procs', label: 'Processes', icon: '▚' },
   { id: 'terminal', label: 'Terminal', icon: '>_' },
   { id: 'services', label: 'Services', icon: '◈' },
@@ -68,8 +66,8 @@ const GROUPS: Group[] = [
   { id: 'settings', label: 'Settings', icon: '⚙' },
 ]
 
-type View = 'terminal' | 'dashboard' | 'widgets' | 'docker' | 'alerts' | 'services' | 'cron' | 'updates' | 'disks' | 'space' | 'files' | 'procs' | 'machines' | 'users' | 'settings'
-const VIEWS: View[] = ['terminal', 'dashboard', 'widgets', 'docker', 'alerts', 'services', 'cron', 'updates', 'disks', 'space', 'files', 'procs', 'machines', 'users', 'settings']
+type View = 'terminal' | 'widgets' | 'docker' | 'alerts' | 'services' | 'cron' | 'updates' | 'disks' | 'space' | 'files' | 'procs' | 'machines' | 'users' | 'settings'
+const VIEWS: View[] = ['terminal', 'widgets', 'docker', 'alerts', 'services', 'cron', 'updates', 'disks', 'space', 'files', 'procs', 'machines', 'users', 'settings']
 const HUB_ONLY: View[] = ['machines', 'users', 'settings', 'alerts']
 
 // URL hash is the source of truth for where you are: #/<machine|hub>/<view>. Back and
@@ -102,7 +100,7 @@ export default function Shell({ me: hubMe, onLoggedOut }: { me: Me; onLoggedOut:
   const listRate = useRefreshMs(LIST_FLOOR)
   const [terms, setTerms] = useState<Term[]>([])
   const [active, setActive] = useState<string | null>(null)
-  const [view, setView] = useState<View>(() => parseHash()?.view ?? 'dashboard')
+  const [view, setView] = useState<View>(() => parseHash()?.view ?? 'procs')
   const [drawer, setDrawer] = useState(false)
   const [online, setOnline] = useState(true)
   const [creating, setCreating] = useState(false)
@@ -142,7 +140,7 @@ export default function Shell({ me: hubMe, onLoggedOut }: { me: Me; onLoggedOut:
   // the machine is changing: the URL sets the machine and the page in one go, and deciding from
   // inside the machine change read the page we were leaving — so a link from Settings to a
   // machine's Disks arrived at its Dashboard.
-  useEffect(() => { if (machine && HUB_ONLY.includes(view)) setView('dashboard') }, [machine, view])
+  useEffect(() => { if (machine && HUB_ONLY.includes(view)) setView('procs') }, [machine, view])
 
   useEffect(() => { const paint = () => applyAccent(machine ?? hubMe.host); paint(); window.addEventListener('hamlab:accents', paint); return () => window.removeEventListener('hamlab:accents', paint) }, [machine, hubMe.host])
   // The tab's title says where you are, so history entries and open tabs can be told apart.
@@ -265,8 +263,7 @@ export default function Shell({ me: hubMe, onLoggedOut }: { me: Me; onLoggedOut:
           {view === 'settings' && <Settings me={hubMe} />}
           {view === 'users' && <Users me={hubMe} />}
           {view === 'space' && <Space key={machine ?? ''} />}
-          {view === 'machines' && <Machines hub={hubMe} onChanged={loadMachines} onOpen={(n) => { switchMachine(n); setView('dashboard') }} />}
-          {view === 'dashboard' && <Dashboard />}
+          {view === 'machines' && <Machines hub={hubMe} onChanged={loadMachines} onOpen={(n) => { switchMachine(n); setView('procs') }} />}
           {view === 'widgets' && <Gallery />}
           {view === 'docker' && <Docker />}
           {view === 'alerts' && <Alerts machines={machines.map((m) => m.name)} titleOf={(n) => titleOf(n === hubMe.host ? null : n, machines, hubMe.host)} />}
@@ -301,7 +298,7 @@ export default function Shell({ me: hubMe, onLoggedOut }: { me: Me; onLoggedOut:
         <span>{machine ? `${title} · ` : ''}{me.version.startsWith('v') ? me.version : 'v' + me.version}</span>
         <span>up {fmtUptime(me.uptime)}</span>
         <span className="spacer" />
-        <span className="muted">{view === 'dashboard' ? 'Dashboard' : view === 'widgets' ? 'Widgets' : view === 'docker' ? 'Docker' : view === 'alerts' ? 'Alerts' : view === 'services' ? 'Services' : view === 'cron' ? 'Cron' : view === 'updates' ? 'Updates' : view === 'disks' ? 'Disks' : view === 'space' ? 'Space' : view === 'files' ? 'Files' : view === 'procs' ? 'Processes' : view === 'machines' ? 'Machines' : view === 'users' ? 'Users' : view === 'settings' ? 'Settings' : activeTerm ? activeTerm.name : ''}</span>
+        <span className="muted">{view === 'widgets' ? 'Widgets' : view === 'docker' ? 'Docker' : view === 'alerts' ? 'Alerts' : view === 'services' ? 'Services' : view === 'cron' ? 'Cron' : view === 'updates' ? 'Updates' : view === 'disks' ? 'Disks' : view === 'space' ? 'Space' : view === 'files' ? 'Files' : view === 'procs' ? 'Processes' : view === 'machines' ? 'Machines' : view === 'users' ? 'Users' : view === 'settings' ? 'Settings' : activeTerm ? activeTerm.name : ''}</span>
       </footer>
     </div>
   )