diff --git a/docs/release-control/v6/internal/PLATFORM_SUPPORT_MODEL.md b/docs/release-control/v6/internal/PLATFORM_SUPPORT_MODEL.md
index a18b6d541..19d425cf3 100644
--- a/docs/release-control/v6/internal/PLATFORM_SUPPORT_MODEL.md
+++ b/docs/release-control/v6/internal/PLATFORM_SUPPORT_MODEL.md
@@ -38,6 +38,14 @@ through platform-by-platform improvisation.
    A profile may describe supported Pulse Agent deployment on a specific host
    or appliance family, but it does not promote that family into
    `PLATFORM_TYPE_KEYS` or first-class platform status.
+9. Product navigation is support-and-evidence gated.
+   First-class platform navigation, command/search destinations, keyboard
+   shortcuts, landing fallbacks, and platform-section tabs must derive from
+   this support model plus current runtime resource or capability evidence.
+   Supported surfaces must appear when evidence proves the platform or
+   capability is present. Admitted-only, presentation-only, unsupported, or
+   absent capability surfaces must be hidden rather than kept as disabled
+   placeholders.
 
 ## Platform Categories
 
diff --git a/docs/release-control/v6/internal/subsystems/ai-runtime.md b/docs/release-control/v6/internal/subsystems/ai-runtime.md
index 8c04b38e6..d71095526 100644
--- a/docs/release-control/v6/internal/subsystems/ai-runtime.md
+++ b/docs/release-control/v6/internal/subsystems/ai-runtime.md
@@ -144,6 +144,10 @@ runtime cost control, and shared AI transport surfaces.
 1. Update this contract when canonical AI runtime or transport entry points move, including transport-level provider request-shape changes such as OpenAI-compatible `tool_choice` handling, runtime-failure classification splits (for example separating tool-choice request rejection, no tool-capable endpoint, and generic model-level lack of tool support into distinct causes), Patrol-specific verification surfaces such as `POST /api/ai/patrol/preflight` that exercise the full chat-completions path with a minimal tool definition rather than only listing models, Patrol-preflight cache observability where the AI Service caches the most recent preflight outcome (success, soft warning, or classified failure) and the AI settings response surfaces it as `patrol_preflight` so the UI can hydrate a "last verified" indicator without forcing operators to re-run preflight on every page load, the auto-trigger contract on `HandleUpdateAISettings` where the save handler runs `TriggerPatrolPreflightAsync` only when the change actually moved Patrol transport (model swap, provider key for that model changed, or assistant just enabled with a Patrol model) so routine settings saves do not burn provider tokens, the startup-seed contract where the AI Service handler dispatches the same async preflight on Pulse boot when assistant is enabled and a Patrol model is configured so the cache is populated for the first `/api/settings/ai` poll after a restart instead of blanking back to "never verified", the readiness-integration contract where the `tools` check in the Patrol readiness payload consults the cached preflight and surfaces the classified evidence (success, soft warning, or failure with classified summary plus "last preflight <age>") for the configured provider+model when available (falling back to the static `PatrolToolReadinessForModel` classifier only when the cache is empty or holds a result for a different model), the stateless-Patrol-input contract where `ExecutePatrolStream` must pass only the current run's user prompt into the agentic loop rather than reloading the persisted `patrol-main` session history (so a prior run that ended with orphan `tool_calls` cannot poison every subsequent run with malformed conversation structure), and the deterministic-resolve-gate contract where the `patrol_resolve_finding` tool adapter rejects LLM-driven resolves of event/persistent category findings (`backup`, `reliability`, `security`, `general`) when a deterministic verifier exists for the finding's key and that verifier either still detects the failure signal **or returns an inconclusive result** — preventing the LLM from optimistically resolving a finding its current investigation simply didn't re-surface, which was the source of the "Backup failed" flap (detected → auto-resolved → re-detected ten times in a day before this gate). The fail-closed-on-inconclusive policy treats verifier errors (timeouts, executor unavailability, transport faults) as "we don't know" rather than "go ahead": resolution of an event/persistent finding is effectively permanent (next detection registers as a regression and inflates counters), so the safe default is to refuse and require either a successful re-verification or operator action, the assessment-recovery contract where the overall-health "Recent Patrol errors" coverage factor in `summarizeRecentPatrolCoverage` suppresses the score penalty once three consecutive trailing successful full Patrol runs exist at the most-recent end of the recent-runs window — so the grade reflects current reality after a Patrol-affecting bug is fixed rather than dragging stale failures forward for the ~9 hours it takes scheduled runs to age them out of the trailing-10 ratio, the orphan-tool-call-repair contract where `convertToProviderMessages` injects synthetic is_error tool result messages for any `tool_call_id` in an assistant message that has no matching downstream tool result, so a chat session that ended mid-tool-call (network drop, ctx timeout, browser crash) cannot poison its next message with the structural-violation error the provider rejects — the synthetic content is marked is_error=true and explains the interruption so the model can retry the call or proceed without the data, and the patrol-session-bound contract where `ExecutePatrolStream` calls `SessionStore.TrimMessages` after persisting each run's messages to cap the patrol-main session at 200 messages (roughly two recent runs' worth) — without the bound the file grew unbounded at every scheduled run, reaching 16 MB and 3,593 messages within a month and making every `AddMessage` rewrite linearly more expensive; the canonical Patrol forensic log is the `PatrolRunRecord` history surfaced at `/api/ai/patrol/runs`, not the chat-session-shaped file
 2. Keep AI runtime and shared API proof routing aligned in `registry.json`
 3. Preserve explicit coverage for chat, Patrol, remediation, and cost-control behavior when AI runtime changes. Interactive Assistant and Patrol tool selection must remain model-owned: Pulse may provide governed context, tools, approval state, resource-resolution facts, safety policy, and neutral resource-scoped action history, but it must not add prompt-keyword routers, expected-tool retries, auto-recovery tool calls, keyword-matched prior-fix suggestions, or Pulse-authored remediation/finding fallbacks that choose the next investigative or corrective action for the model.
+   Assistant FSM gates remain safety boundaries after the model chooses a tool:
+   repeated model attempts must not waive post-write verification or allow a
+   new state-changing tool before the model has supplied current verification
+   evidence through an allowed read/resolve path.
    Patrol runtime failures are part of that runtime contract: provider, model,
    tool-calling, auth, quota, rate-limit, context-window, and connectivity
    failures must be classified in `internal/ai/` before they reach operators,
@@ -626,8 +630,12 @@ runtime cost control, and shared AI transport surfaces.
 
 Primary nav moved to platform-first on 2026-05-16 through
 `frontend-modern/src/App.tsx` and `frontend-modern/src/AppLayout.tsx`: the top
-of the app exposes the five canonical platform pages (Proxmox, Docker,
-Kubernetes, TrueNAS, vSphere) plus Alerts, Patrol, and Settings. The legacy
+of the app may expose canonical platform pages (Proxmox, Docker, Kubernetes,
+TrueNAS, vSphere) plus Alerts, Patrol, and Settings, but platform destinations
+must pass the shared support-and-resource-evidence gate before they appear in
+navigation, command palette entries, keyboard shortcuts, or landing
+fallbacks. Admitted-only or absent platform surfaces must stay hidden from the
+AI-adjacent shell and must not be kept as disabled placeholders. The legacy
 `/infrastructure`, `/workloads`, `/storage`, `/recovery`, and `/ceph` route
 shells were retired alongside their page wrappers. The AI Chat launcher, the
 Patrol surfaces, and the `AssistantHandoffPayload` deep links must use
diff --git a/docs/release-control/v6/internal/subsystems/cloud-paid.md b/docs/release-control/v6/internal/subsystems/cloud-paid.md
index 65d0e275c..2141c2b92 100644
--- a/docs/release-control/v6/internal/subsystems/cloud-paid.md
+++ b/docs/release-control/v6/internal/subsystems/cloud-paid.md
@@ -490,14 +490,14 @@ or other self-hosted uncapped continuity plans.
     (Proxmox, Docker, Kubernetes, TrueNAS, vSphere) using the canonical path
     constants from `frontend-modern/src/routing/resourceLinks.ts`. The
     `PlatformTab` list in `AppLayout.tsx` must enumerate exactly those
-    supported families and must keep `alwaysShow: true` for every supported
-    family so first-run operators can discover what Pulse monitors; the
-    `enabled` and `live` flags are derived from canonical resource presence
-    in `state.resources` so unconnected platforms render in a disabled tone
-    and surface their own empty-state setup affordances inside the platform
-    page itself rather than being hidden from nav. Infrastructure, Workloads,
-    Storage, and Recovery are not duplicated as equal primary tabs in that
-    list; their tables are reused inside the platform pages via embedded
+    supported families, but product navigation is support-and-evidence gated:
+    `enabled`, `live`, and inclusion in the rendered primary navigation derive
+    from the governed support manifest plus canonical resource evidence in
+    `state.resources`. Admitted-only, presentation-only, unsupported, or
+    absent platform families must not render as disabled placeholders in the
+    paid or hosted app shell. Infrastructure, Workloads, Storage, and Recovery
+    are not duplicated as equal primary tabs in that list; their tables are
+    reused inside the platform pages via embedded
     `tableOnly` surfaces, and their routes remain wired in `App.tsx` purely
     for deep-link compatibility. Each platform page must remain chrome-only:
     routing plus sub-tab navigation that embeds the canonical
diff --git a/docs/release-control/v6/internal/subsystems/frontend-primitives.md b/docs/release-control/v6/internal/subsystems/frontend-primitives.md
index e8b951c08..8fe00cb7a 100644
--- a/docs/release-control/v6/internal/subsystems/frontend-primitives.md
+++ b/docs/release-control/v6/internal/subsystems/frontend-primitives.md
@@ -944,11 +944,13 @@ AI runtime.
     primitives live under `frontend-modern/src/features/platformPage/` so the
     chrome stays reusable across families.
     `frontend-modern/src/AppLayout.tsx` may extend the `PlatformTab` list with
-    new family entries; those entries must keep `alwaysShow: true` for
-    supported families so first-run operators discover the full platform set,
-    while `enabled` and `live` derive from the family's canonical resource
-    presence in `state.resources` so unconnected platforms render in a
-    disabled tone with the platform page's own empty-state setup affordance.
+    new family entries, but primary navigation is a support-and-evidence-gated
+    surface: rendered platform tabs, command/search destinations, keyboard
+    shortcuts, and authenticated landing fallbacks must derive from the
+    governed support manifest plus current runtime resource evidence.
+    Supported platform families appear when evidence proves they are present;
+    admitted-only, presentation-only, unsupported, or absent families stay
+    hidden rather than rendering as disabled placeholders.
     The `MOBILE_NAV_PLATFORM_PRIORITY` ordering in
     `frontend-modern/src/components/shared/mobileNavBarModel.ts` mirrors
     that platform-first set so mobile and desktop primary navigation stay
@@ -1383,9 +1385,10 @@ replaced with `nav-proxmox`, `nav-docker`, `nav-kubernetes`, `nav-truenas`,
 `nav-kubernetes-pods` entry that lands on `/kubernetes/pods`. The shell
 preload set and `getActiveTabForPath` matcher no longer recognize the legacy
 top-level routes. New palette commands and shortcut chords must therefore
-anchor on canonical platform routes; do not reintroduce a top-level
-Infrastructure / Workloads / Storage / Recovery entry by reanimating the
-legacy paths.
+anchor on canonical platform routes and must flow through the same platform
+visibility model as primary navigation; do not reintroduce hidden platform
+families or top-level Infrastructure / Workloads / Storage / Recovery entries
+by reanimating the legacy paths.
 
 The shared table chrome now allows `TableCardHeader` to expose a right-aligned
 action slot, currently used by the Workloads/Proxmox metric display control.
diff --git a/docs/release-control/v6/internal/subsystems/storage-recovery.md b/docs/release-control/v6/internal/subsystems/storage-recovery.md
index 4deeb26a0..eebac4dfa 100644
--- a/docs/release-control/v6/internal/subsystems/storage-recovery.md
+++ b/docs/release-control/v6/internal/subsystems/storage-recovery.md
@@ -214,7 +214,13 @@ bypass the API fail-closed execution gate.
    second-row rail as sort, charts, and reset, while Node, Source, Role, and
    Group remain menu/chip filters because their option sets are scope- or
    data-driven. Subtabs (Pools / Physical Disks) sit above the bar as
-   navigation, not filters. Storage summary chart visibility remains a
+   navigation, not filters. Platform-page storage and recovery section tabs
+   are still capability-gated navigation: Proxmox Storage,
+   Backups, Ceph, Replication, and adjacent recovery sections may appear only
+   when the platform page model has matching storage, backup, Ceph,
+   replication, or provider evidence. Empty capability tabs must not remain as
+   disabled placeholders on platform pages.
+   Storage summary chart visibility remains a
    page-level display preference, but it now rides the shared
    `FilterBar.viewOptionsTrailing` slot together with the sort key/direction
    controls. The charts toggle must read as an explicit `Show charts` /
diff --git a/frontend-modern/src/App.tsx b/frontend-modern/src/App.tsx
index 3a84c21cb..912f603ef 100644
--- a/frontend-modern/src/App.tsx
+++ b/frontend-modern/src/App.tsx
@@ -11,13 +11,25 @@ import { DemoBanner } from './components/DemoBanner';
 import { GitHubStarBanner } from './components/GitHubStarBanner';
 // Modals are only mounted when opened, so their code can stay out of the
 // entry bundle until first use (same pattern as AIChat below).
-const KeyboardShortcutsModal = lazy(() => import('./components/shared/KeyboardShortcutsModal').then((m) => ({ default: m.KeyboardShortcutsModal })));
-const CommandPaletteModal = lazy(() => import('./components/shared/CommandPaletteModal').then((m) => ({ default: m.CommandPaletteModal })));
+const KeyboardShortcutsModal = lazy(() =>
+  import('./components/shared/KeyboardShortcutsModal').then((m) => ({
+    default: m.KeyboardShortcutsModal,
+  })),
+);
+const CommandPaletteModal = lazy(() =>
+  import('./components/shared/CommandPaletteModal').then((m) => ({
+    default: m.CommandPaletteModal,
+  })),
+);
 import { dialogStackHasBlockingDialog } from './components/shared/useDialogState';
 import { createTooltipSystem } from './components/shared/Tooltip';
-const TokenRevealDialog = lazy(() => import('./components/TokenRevealDialog').then((m) => ({ default: m.TokenRevealDialog })));
+const TokenRevealDialog = lazy(() =>
+  import('./components/TokenRevealDialog').then((m) => ({ default: m.TokenRevealDialog })),
+);
 import { tokenRevealStore } from './stores/tokenReveal';
-const UpdateProgressModal = lazy(() => import('./components/UpdateProgressModal').then((m) => ({ default: m.UpdateProgressModal })));
+const UpdateProgressModal = lazy(() =>
+  import('./components/UpdateProgressModal').then((m) => ({ default: m.UpdateProgressModal })),
+);
 import { UpdatesAPI, type UpdateStatus } from './api/updates';
 // AIChat is the side-panel chat UI plus its store deps (markdown rendering,
 // tool-call formatting, prompt scaffolding). Lazy-load behind aiChatStore.isOpen
@@ -33,6 +45,11 @@ import {
   PROXMOX_PATH,
   TRUENAS_PATH,
   VMWARE_PATH,
+  buildDockerPath,
+  buildKubernetesPath,
+  buildProxmoxPath,
+  buildTrueNASPath,
+  buildVmwarePath,
 } from './routing/resourceLinks';
 import { APP_SHELL_ROUTE_PRELOAD_PATHS, preloadRouteModule } from '@/routing/routePreload';
 import { AppLayout } from '@/AppLayout';
@@ -43,6 +60,12 @@ import {
   readPendingAppShellRestoreTop,
 } from '@/utils/appShellScrollRestoration';
 import { DarkModeContext, WebSocketContext, useWebSocket } from '@/contexts/appRuntime';
+import {
+  buildPrimaryPlatformNavigationVisibility,
+  selectFirstVisiblePrimaryPlatformNavigationId,
+  type PlatformNavigationVisibility,
+  type PrimaryPlatformNavId,
+} from '@/features/platformNavigation/platformNavigationModel';
 
 function isPublicRoutePath(pathname: string): boolean {
   // Public routes must be viewable without authentication.
@@ -72,6 +95,23 @@ const SetupCompletionPreviewPage = lazy(() =>
 );
 const ROOT_PATROL_PATH = PATROL_PATH;
 
+const PRIMARY_PLATFORM_ROUTE_BY_ID: Record<PrimaryPlatformNavId, string> = {
+  proxmox: buildProxmoxPath(),
+  docker: buildDockerPath(),
+  kubernetes: buildKubernetesPath(),
+  truenas: buildTrueNASPath(),
+  vmware: buildVmwarePath(),
+};
+
+function getDefaultWorkspaceRoute(
+  visibility: PlatformNavigationVisibility,
+  hasSettingsAccess: boolean,
+): string {
+  const platformId = selectFirstVisiblePrimaryPlatformNavigationId(visibility);
+  if (platformId) return PRIMARY_PLATFORM_ROUTE_BY_ID[platformId];
+  return hasSettingsAccess ? '/settings/infrastructure' : '/alerts';
+}
+
 async function preloadAppShellRoutes() {
   await Promise.all(
     APP_SHELL_ROUTE_PRELOAD_PATHS.map(async (route) => {
@@ -208,8 +248,22 @@ function App() {
     const [pendingAppShellRestoreTop, setPendingAppShellRestoreTop] = createSignal<number | null>(
       null,
     );
+    const navigate = useNavigate();
     const location = useLocation();
     const isPublicRoute = createMemo(() => isPublicRoutePath(location.pathname));
+    const platformNavigationVisibility = createMemo(() =>
+      buildPrimaryPlatformNavigationVisibility(runtime.state().resources || []),
+    );
+    const platformNavigationResolved = createMemo(() => {
+      const store = runtime.enhancedStore();
+      return Boolean(store?.initialDataReceived?.());
+    });
+    const hasSettingsAccess = createMemo(() => {
+      const scopes = runtime.securityStatus()?.tokenScopes;
+      return (
+        !scopes || scopes.length === 0 || scopes.includes('*') || scopes.includes('settings:read')
+      );
+    });
     let appShellRoutePreloadCleanup: (() => void) | undefined;
     let appShellRoutesPreloadScheduled = false;
 
@@ -222,6 +276,16 @@ function App() {
       }
     });
 
+    createEffect(() => {
+      if (runtime.isLoading() || runtime.needsAuth() || isPublicRoute()) return;
+      const normalizedPath = location.pathname.replace(/\/+$/, '') || '/';
+      if (normalizedPath !== '/' && normalizedPath !== '/login') return;
+      if (!platformNavigationResolved()) return;
+      navigate(getDefaultWorkspaceRoute(platformNavigationVisibility(), hasSettingsAccess()), {
+        replace: true,
+      });
+    });
+
     createEffect(() => {
       const shell = appScrollShellRef();
       const restoreTop = pendingAppShellRestoreTop();
@@ -306,6 +370,7 @@ function App() {
 
     useKeyboardShortcuts({
       enabled: () => !runtime.needsAuth(),
+      platformVisibility: platformNavigationVisibility,
       isShortcutsOpen: shortcutsOpen,
       isCommandPaletteOpen: commandPaletteOpen,
       onToggleShortcuts: () => {
@@ -422,12 +487,14 @@ function App() {
                         <KeyboardShortcutsModal
                           isOpen={shortcutsOpen()}
                           onClose={() => setShortcutsOpen(false)}
+                          platformVisibility={platformNavigationVisibility}
                         />
                       </Show>
                       <Show when={commandPaletteOpen()}>
                         <CommandPaletteModal
                           isOpen={commandPaletteOpen()}
                           onClose={() => setCommandPaletteOpen(false)}
+                          platformVisibility={platformNavigationVisibility}
                         />
                       </Show>
                       <Show when={tokenRevealStore.state() !== null}>
diff --git a/frontend-modern/src/AppLayout.tsx b/frontend-modern/src/AppLayout.tsx
index d3cf847c7..fb4af7083 100644
--- a/frontend-modern/src/AppLayout.tsx
+++ b/frontend-modern/src/AppLayout.tsx
@@ -11,12 +11,17 @@ import ShipWheelIcon from 'lucide-solid/icons/ship-wheel';
 import DatabaseIcon from 'lucide-solid/icons/database';
 import CpuIcon from 'lucide-solid/icons/cpu';
 import { ProxmoxIcon } from '@/components/icons/ProxmoxIcon';
-import { normalizeSourcePlatformQueryValue } from '@/utils/sourcePlatforms';
 import {
   MobileNavBar,
   type MobileNavBarPlatformTab as PlatformTab,
   type MobileNavBarUtilityTab as UtilityTab,
 } from '@/components/shared/MobileNavBar';
+import {
+  buildPrimaryPlatformNavigationVisibility,
+  primaryPlatformNavigationIsVisible,
+  selectFirstVisiblePrimaryPlatformNavigationId,
+  type PrimaryPlatformNavId,
+} from '@/features/platformNavigation/platformNavigationModel';
 import { dialogStackHasBlockingDialog } from '@/components/shared/useDialogState';
 import { OrgSwitcher } from '@/components/OrgSwitcher';
 import { PulsePatrolLogo } from '@/components/Brand/PulsePatrolLogo';
@@ -49,6 +54,7 @@ const ROOT_DOCKER_PATH = buildDockerPath();
 const ROOT_KUBERNETES_PATH = buildKubernetesPath();
 const ROOT_TRUENAS_PATH = buildTrueNASPath();
 const ROOT_VMWARE_PATH = buildVmwarePath();
+const ROOT_ALERTS_PATH = '/alerts';
 const NAV_TAB_ICON_CLASS = 'w-4 h-4 shrink-0';
 const AI_CHAT_LAUNCHER_BUTTON_CLASS =
   'fixed right-4 bottom-[calc(5rem+env(safe-area-inset-bottom,0px))] z-40 flex h-11 w-11 items-center justify-center rounded-full border border-border bg-surface text-blue-600 shadow-lg transition-colors duration-200 hover:bg-surface-hover hover:text-blue-700 focus-visible:outline focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-blue-500 dark:text-blue-400 dark:hover:text-blue-300 lg:right-0 lg:top-1/2 lg:bottom-auto lg:h-auto lg:w-auto lg:min-h-9 lg:min-w-10 lg:-translate-y-1/2 lg:rounded-l-lg lg:rounded-r-none lg:border-r-0 lg:px-2.5 lg:py-2.5 lg:shadow-none';
@@ -215,6 +221,23 @@ export function AppLayout(props: AppLayoutProps) {
     setKioskMode(!kioskMode());
   };
 
+  const platformNavigationVisibility = createMemo(() =>
+    buildPrimaryPlatformNavigationVisibility(props.state().resources || []),
+  );
+  const primaryPlatformRouteById: Record<PrimaryPlatformNavId, string> = {
+    proxmox: ROOT_PROXMOX_PATH,
+    docker: ROOT_DOCKER_PATH,
+    kubernetes: ROOT_KUBERNETES_PATH,
+    truenas: ROOT_TRUENAS_PATH,
+    vmware: ROOT_VMWARE_PATH,
+  };
+  const primaryWorkspacePath = createMemo(() => {
+    const platformId = selectFirstVisiblePrimaryPlatformNavigationId(
+      platformNavigationVisibility(),
+    );
+    return platformId ? primaryPlatformRouteById[platformId] : ROOT_ALERTS_PATH;
+  });
+
   createEffect(() => {
     if (kioskMode()) {
       setHeaderVisible(true);
@@ -254,8 +277,9 @@ export function AppLayout(props: AppLayoutProps) {
       !normalizedPath.startsWith('/alerts/overview/') &&
       !normalizedPath.startsWith('/alerts/history/');
 
-    if ((isBlocked || isAlertConfigTab) && normalizedPath !== ROOT_PROXMOX_PATH) {
-      navigate(ROOT_PROXMOX_PATH, { replace: true });
+    const targetPath = primaryWorkspacePath();
+    if ((isBlocked || isAlertConfigTab) && normalizedPath !== targetPath) {
+      navigate(targetPath, { replace: true });
     }
   });
 
@@ -291,25 +315,17 @@ export function AppLayout(props: AppLayoutProps) {
   const getActiveTabDesktop = () => getActiveTabForPath(location.pathname);
   const getActiveTabMobile = () => getActiveTabForPath(location.pathname);
 
-  const platformPresence = createMemo(() => {
-    const presence = new Set<string>();
-    for (const resource of props.state().resources || []) {
-      const key = normalizeSourcePlatformQueryValue(resource.platformType || '');
-      if (key) presence.add(key);
-    }
-    return presence;
-  });
-
-  // Primary nav is platform-first. Every supported platform family is
-  // always visible so first-run users can discover what Pulse monitors;
-  // platforms with no connected resources still render their canonical
-  // empty state inside the platform page itself. Infrastructure / Workloads
-  // / Storage / Recovery are NOT duplicated as equal primary tabs — their
-  // tables are reused inside each platform page via embedded tableOnly
-  // surfaces, and their routes remain wired in App.tsx purely for
-  // route-compatibility with existing deep links.
+  // Primary nav is platform-first and resource-admitted. A platform tab only
+  // appears when the support manifest says the platform is supported and the
+  // current resource snapshot proves that platform is actually present.
+  // Infrastructure / Workloads / Storage / Recovery are NOT duplicated as
+  // equal primary tabs — their tables are reused inside each platform page
+  // via embedded tableOnly surfaces, and their routes remain wired in App.tsx
+  // purely for route-compatibility with existing deep links.
   const platformTabs = createMemo<PlatformTab[]>(() => {
-    const presence = platformPresence();
+    const visible = platformNavigationVisibility();
+    const isVisible = (id: PlatformTab['id']) =>
+      primaryPlatformNavigationIsVisible(visible, id as PrimaryPlatformNavId);
     const allPlatforms: PlatformTab[] = [
       {
         id: 'proxmox',
@@ -317,10 +333,10 @@ export function AppLayout(props: AppLayoutProps) {
         route: ROOT_PROXMOX_PATH,
         settingsRoute: '/settings/infrastructure/platforms/proxmox/pve',
         tooltip: 'Proxmox VE, Backup Server, Mail Gateway, storage, backups, and guests',
-        enabled: presence.has('proxmox-pve'),
-        live: presence.has('proxmox-pve'),
+        enabled: isVisible('proxmox'),
+        live: isVisible('proxmox'),
         icon: ProxmoxIcon,
-        alwaysShow: true,
+        alwaysShow: false,
       },
       {
         id: 'docker',
@@ -328,10 +344,10 @@ export function AppLayout(props: AppLayoutProps) {
         route: ROOT_DOCKER_PATH,
         settingsRoute: '/settings/workloads/docker',
         tooltip: 'Docker and Podman hosts, containers, and Swarm services',
-        enabled: presence.has('docker'),
-        live: presence.has('docker'),
+        enabled: isVisible('docker'),
+        live: isVisible('docker'),
         icon: ContainerIcon,
-        alwaysShow: true,
+        alwaysShow: false,
       },
       {
         id: 'kubernetes',
@@ -339,10 +355,10 @@ export function AppLayout(props: AppLayoutProps) {
         route: ROOT_KUBERNETES_PATH,
         settingsRoute: '/settings',
         tooltip: 'Kubernetes clusters, nodes, pods, deployments, and services',
-        enabled: presence.has('kubernetes'),
-        live: presence.has('kubernetes'),
+        enabled: isVisible('kubernetes'),
+        live: isVisible('kubernetes'),
         icon: ShipWheelIcon,
-        alwaysShow: true,
+        alwaysShow: false,
       },
       {
         id: 'truenas',
@@ -350,10 +366,10 @@ export function AppLayout(props: AppLayoutProps) {
         route: ROOT_TRUENAS_PATH,
         settingsRoute: '/settings/infrastructure',
         tooltip: 'TrueNAS hosts, storage, and apps',
-        enabled: presence.has('truenas'),
-        live: presence.has('truenas'),
+        enabled: isVisible('truenas'),
+        live: isVisible('truenas'),
         icon: DatabaseIcon,
-        alwaysShow: true,
+        alwaysShow: false,
       },
       {
         id: 'vmware',
@@ -361,10 +377,10 @@ export function AppLayout(props: AppLayoutProps) {
         route: ROOT_VMWARE_PATH,
         settingsRoute: '/settings/infrastructure',
         tooltip: 'VMware vSphere hosts, virtual machines, and datastores',
-        enabled: presence.has('vmware-vsphere'),
-        live: presence.has('vmware-vsphere'),
+        enabled: isVisible('vmware'),
+        live: isVisible('vmware'),
         icon: CpuIcon,
-        alwaysShow: true,
+        alwaysShow: false,
       },
     ];
 
diff --git a/frontend-modern/src/__tests__/App.architecture.test.ts b/frontend-modern/src/__tests__/App.architecture.test.ts
index 14bc95bcc..4a0aaccf3 100644
--- a/frontend-modern/src/__tests__/App.architecture.test.ts
+++ b/frontend-modern/src/__tests__/App.architecture.test.ts
@@ -73,6 +73,11 @@ describe('App architecture', () => {
     expect(appLayoutSource).toContain("id: 'vmware',");
     // Platform-first primary nav: Infrastructure / Workloads / Storage /
     // Recovery are not duplicated as equal primary PlatformTab entries.
+    expect(appSource).toContain('getDefaultWorkspaceRoute');
+    expect(appSource).toContain('platformNavigationResolved');
+    expect(appSource).toContain('buildPrimaryPlatformNavigationVisibility');
+    expect(appLayoutSource).toContain('buildPrimaryPlatformNavigationVisibility');
+    expect(appLayoutSource).toContain('primaryPlatformNavigationIsVisible');
     expect(appLayoutSource).not.toContain("id: 'infrastructure',");
     expect(appLayoutSource).not.toContain("id: 'workloads',");
     expect(appLayoutSource).not.toContain('buildStorageRecoveryTabSpecs(');
diff --git a/frontend-modern/src/__tests__/AppLayout.test.tsx b/frontend-modern/src/__tests__/AppLayout.test.tsx
index 0a0544240..737797361 100644
--- a/frontend-modern/src/__tests__/AppLayout.test.tsx
+++ b/frontend-modern/src/__tests__/AppLayout.test.tsx
@@ -2,6 +2,7 @@ import { cleanup, render, screen, within } from '@solidjs/testing-library';
 import { Route, Router } from '@solidjs/router';
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
 import type { State } from '@/types/api';
+import type { Resource } from '@/types/resource';
 import { AppLayout } from '@/AppLayout';
 import { aiChatStore } from '@/stores/aiChat';
 
@@ -20,7 +21,21 @@ describe('AppLayout navigation icons', () => {
     cleanup();
   });
 
-  const renderLayout = () =>
+  const makeResource = (overrides: Partial<Resource>): Resource =>
+    ({
+      id: overrides.id ?? 'resource-1',
+      name: overrides.name ?? overrides.id ?? 'resource-1',
+      displayName: overrides.displayName ?? overrides.name ?? overrides.id ?? 'resource-1',
+      type: overrides.type ?? 'agent',
+      platformId: overrides.platformId ?? 'platform-1',
+      platformType: overrides.platformType ?? 'agent',
+      sourceType: overrides.sourceType ?? 'api',
+      status: overrides.status ?? 'online',
+      lastSeen: overrides.lastSeen ?? 1_700_000_000_000,
+      ...overrides,
+    }) as Resource;
+
+  const renderLayout = (resources: Resource[] = []) =>
     render(() => (
       <Router>
         <Route
@@ -49,6 +64,7 @@ describe('AppLayout navigation icons', () => {
               state={() =>
                 ({
                   activeAlerts: [{ id: 'alert-1', level: 'warning', acknowledged: false }],
+                  resources,
                 }) as unknown as State
               }
               tokenScopes={() => ['settings:read']}
@@ -99,6 +115,34 @@ describe('AppLayout navigation icons', () => {
     expect(container).toHaveTextContent('Infrastructure body');
   });
 
+  it('hides platform tabs without supported infrastructure evidence', () => {
+    renderLayout([
+      makeResource({ id: 'pve-1', type: 'agent', platformType: 'proxmox-pve' }),
+      makeResource({ id: 'docker-1', type: 'docker-host', platformType: 'docker' }),
+      makeResource({ id: 'vcenter-1', type: 'vm', platformType: 'vmware-vsphere' }),
+    ]);
+
+    const desktopNav = screen.getByRole('tablist', { name: 'Primary navigation' });
+    const infrastructureGroup = desktopNav.querySelector('[aria-label="Infrastructure"]');
+    expect(infrastructureGroup).toBeTruthy();
+
+    expect(
+      within(infrastructureGroup as HTMLElement).getByRole('tab', { name: 'Proxmox' }),
+    ).toBeTruthy();
+    expect(
+      within(infrastructureGroup as HTMLElement).getByRole('tab', { name: 'Docker' }),
+    ).toBeTruthy();
+    expect(
+      within(infrastructureGroup as HTMLElement).queryByRole('tab', { name: 'Kubernetes' }),
+    ).toBeNull();
+    expect(
+      within(infrastructureGroup as HTMLElement).queryByRole('tab', { name: 'TrueNAS' }),
+    ).toBeNull();
+    expect(
+      within(infrastructureGroup as HTMLElement).queryByRole('tab', { name: 'vSphere' }),
+    ).toBeNull();
+  });
+
   it('keeps connected brand motion on the logo while the wordmark stays static', () => {
     const { container } = renderLayout();
 
diff --git a/frontend-modern/src/components/shared/KeyboardShortcutsModal.tsx b/frontend-modern/src/components/shared/KeyboardShortcutsModal.tsx
index 74cfbc336..13aeeec79 100644
--- a/frontend-modern/src/components/shared/KeyboardShortcutsModal.tsx
+++ b/frontend-modern/src/components/shared/KeyboardShortcutsModal.tsx
@@ -1,5 +1,9 @@
 import { For, createMemo } from 'solid-js';
 import { Dialog } from '@/components/shared/Dialog';
+import {
+  primaryPlatformNavigationIsVisible,
+  type PlatformNavigationVisibility,
+} from '@/features/platformNavigation/platformNavigationModel';
 
 interface ShortcutGroup {
   title: string;
@@ -9,6 +13,7 @@ interface ShortcutGroup {
 interface KeyboardShortcutsModalProps {
   isOpen: boolean;
   onClose: () => void;
+  platformVisibility: () => PlatformNavigationVisibility;
 }
 
 const UNIFIED_NAV_SHORTCUTS: ShortcutGroup = {
@@ -25,6 +30,14 @@ const UNIFIED_NAV_SHORTCUTS: ShortcutGroup = {
   ],
 };
 
+const NAV_PLATFORM_SHORTCUTS: Record<string, keyof PlatformNavigationVisibility> = {
+  'g then p': 'proxmox',
+  'g then d': 'docker',
+  'g then k': 'kubernetes',
+  'g then n': 'truenas',
+  'g then v': 'vmware',
+};
+
 const SEARCH_SHORTCUTS: ShortcutGroup = {
   title: 'Search & Help',
   items: [
@@ -37,7 +50,13 @@ const SEARCH_SHORTCUTS: ShortcutGroup = {
 
 export function KeyboardShortcutsModal(props: KeyboardShortcutsModalProps) {
   const shortcutGroups = createMemo<ShortcutGroup[]>(() => {
-    return [UNIFIED_NAV_SHORTCUTS, SEARCH_SHORTCUTS];
+    const platformVisibility = props.platformVisibility();
+    const visibleNavigationItems = UNIFIED_NAV_SHORTCUTS.items.filter((item) => {
+      const platformId = NAV_PLATFORM_SHORTCUTS[item.keys];
+      if (!platformId) return true;
+      return primaryPlatformNavigationIsVisible(platformVisibility, platformId);
+    });
+    return [{ ...UNIFIED_NAV_SHORTCUTS, items: visibleNavigationItems }, SEARCH_SHORTCUTS];
   });
 
   return (
diff --git a/frontend-modern/src/components/shared/__tests__/CommandPaletteModal.test.tsx b/frontend-modern/src/components/shared/__tests__/CommandPaletteModal.test.tsx
index 1828a1246..2aba3a452 100644
--- a/frontend-modern/src/components/shared/__tests__/CommandPaletteModal.test.tsx
+++ b/frontend-modern/src/components/shared/__tests__/CommandPaletteModal.test.tsx
@@ -1,9 +1,11 @@
 import { afterEach, describe, expect, it, vi } from 'vitest';
 import { cleanup, fireEvent, render, screen } from '@solidjs/testing-library';
 import type { JSX } from 'solid-js';
+import type { Resource } from '@/types/resource';
 import commandPaletteModalSource from '@/components/shared/CommandPaletteModal.tsx?raw';
 import commandPaletteModelSource from '@/components/shared/commandPaletteModel.ts?raw';
 import commandPaletteStateSource from '@/components/shared/useCommandPaletteState.ts?raw';
+import { buildPrimaryPlatformNavigationVisibility } from '@/features/platformNavigation/platformNavigationModel';
 
 const navigateMock = vi.fn();
 
@@ -18,6 +20,26 @@ vi.mock('@/components/shared/Dialog', () => ({
 
 import { CommandPaletteModal } from '@/components/shared/CommandPaletteModal';
 
+const makeResource = (overrides: Partial<Resource>): Resource =>
+  ({
+    id: overrides.id ?? 'resource-1',
+    name: overrides.name ?? overrides.id ?? 'resource-1',
+    displayName: overrides.displayName ?? overrides.name ?? overrides.id ?? 'resource-1',
+    type: overrides.type ?? 'agent',
+    platformId: overrides.platformId ?? 'platform-1',
+    platformType: overrides.platformType ?? 'agent',
+    sourceType: overrides.sourceType ?? 'api',
+    status: overrides.status ?? 'online',
+    lastSeen: overrides.lastSeen ?? 1_700_000_000_000,
+    ...overrides,
+  }) as Resource;
+
+const platformVisibility = () =>
+  buildPrimaryPlatformNavigationVisibility([
+    makeResource({ id: 'pve-1', type: 'agent', platformType: 'proxmox-pve' }),
+    makeResource({ id: 'k8s-1', type: 'k8s-cluster', platformType: 'kubernetes' }),
+  ]);
+
 describe('CommandPaletteModal', () => {
   afterEach(() => {
     cleanup();
@@ -58,7 +80,13 @@ describe('CommandPaletteModal', () => {
   });
 
   it('renders the platform entries and the dedicated Kubernetes pods command', () => {
-    render(() => <CommandPaletteModal isOpen={true} onClose={vi.fn()} />);
+    render(() => (
+      <CommandPaletteModal
+        isOpen={true}
+        onClose={vi.fn()}
+        platformVisibility={platformVisibility}
+      />
+    ));
 
     expect(screen.getByText('Go to Proxmox')).toBeInTheDocument();
     expect(screen.getByText('Go to Kubernetes Pods')).toBeInTheDocument();
@@ -67,7 +95,13 @@ describe('CommandPaletteModal', () => {
 
   it('navigates to the Kubernetes pods sub-tab', async () => {
     const onClose = vi.fn();
-    render(() => <CommandPaletteModal isOpen={true} onClose={onClose} />);
+    render(() => (
+      <CommandPaletteModal
+        isOpen={true}
+        onClose={onClose}
+        platformVisibility={platformVisibility}
+      />
+    ));
 
     await fireEvent.click(screen.getByText('Go to Kubernetes Pods'));
 
@@ -77,7 +111,13 @@ describe('CommandPaletteModal', () => {
 
   it('uses the shared search input and keeps Enter selection behavior', async () => {
     const onClose = vi.fn();
-    render(() => <CommandPaletteModal isOpen={true} onClose={onClose} />);
+    render(() => (
+      <CommandPaletteModal
+        isOpen={true}
+        onClose={onClose}
+        platformVisibility={platformVisibility}
+      />
+    ));
 
     const input = screen.getByPlaceholderText('Type a command or search...');
     await fireEvent.input(input, { target: { value: 'kubernetes pods' } });
@@ -86,4 +126,25 @@ describe('CommandPaletteModal', () => {
     expect(navigateMock).toHaveBeenCalledWith('/kubernetes/pods');
     expect(onClose).toHaveBeenCalledTimes(1);
   });
+
+  it('hides platform commands without supported infrastructure evidence', () => {
+    render(() => (
+      <CommandPaletteModal
+        isOpen={true}
+        onClose={vi.fn()}
+        platformVisibility={() =>
+          buildPrimaryPlatformNavigationVisibility([
+            makeResource({ id: 'pve-1', type: 'agent', platformType: 'proxmox-pve' }),
+            makeResource({ id: 'vmware-1', type: 'vm', platformType: 'vmware-vsphere' }),
+          ])
+        }
+      />
+    ));
+
+    expect(screen.getByText('Go to Proxmox')).toBeInTheDocument();
+    expect(screen.queryByText('Go to Docker')).not.toBeInTheDocument();
+    expect(screen.queryByText('Go to Kubernetes')).not.toBeInTheDocument();
+    expect(screen.queryByText('Go to TrueNAS')).not.toBeInTheDocument();
+    expect(screen.queryByText('Go to vSphere')).not.toBeInTheDocument();
+  });
 });
diff --git a/frontend-modern/src/components/shared/commandPaletteModel.ts b/frontend-modern/src/components/shared/commandPaletteModel.ts
index 493640fe5..b04f3282c 100644
--- a/frontend-modern/src/components/shared/commandPaletteModel.ts
+++ b/frontend-modern/src/components/shared/commandPaletteModel.ts
@@ -1,6 +1,12 @@
+import {
+  primaryPlatformNavigationIsVisible,
+  type PlatformNavigationVisibility,
+} from '@/features/platformNavigation/platformNavigationModel';
+
 export interface CommandPaletteModalProps {
   isOpen: boolean;
   onClose: () => void;
+  platformVisibility: () => PlatformNavigationVisibility;
 }
 
 export type CommandPaletteModalCommand = {
@@ -23,56 +29,76 @@ export type CommandPaletteCommandPaths = {
 
 export function buildCommandPaletteCommands(options: {
   paths: CommandPaletteCommandPaths;
+  platformVisibility: PlatformNavigationVisibility;
   navigate: (path: string) => void;
 }): CommandPaletteModalCommand[] {
-  return [
-    {
+  const commands: CommandPaletteModalCommand[] = [];
+
+  if (primaryPlatformNavigationIsVisible(options.platformVisibility, 'proxmox')) {
+    commands.push({
       id: 'nav-proxmox',
       label: 'Go to Proxmox',
       description: options.paths.proxmoxPath,
       shortcut: 'g p',
       keywords: ['proxmox', 'pve', 'pbs', 'pmg', 'mail', 'backups', 'ceph', 'vm', 'lxc'],
       action: () => options.navigate(options.paths.proxmoxPath),
-    },
-    {
+    });
+  }
+
+  if (primaryPlatformNavigationIsVisible(options.platformVisibility, 'docker')) {
+    commands.push({
       id: 'nav-docker',
       label: 'Go to Docker',
       description: options.paths.dockerPath,
       shortcut: 'g d',
       keywords: ['docker', 'podman', 'containers', 'compose', 'swarm', 'services'],
       action: () => options.navigate(options.paths.dockerPath),
-    },
-    {
-      id: 'nav-kubernetes',
-      label: 'Go to Kubernetes',
-      description: options.paths.kubernetesPath,
-      shortcut: 'g k',
-      keywords: ['k8s', 'kubernetes', 'clusters', 'nodes', 'deployments'],
-      action: () => options.navigate(options.paths.kubernetesPath),
-    },
-    {
-      id: 'nav-kubernetes-pods',
-      label: 'Go to Kubernetes Pods',
-      description: options.paths.kubernetesPodsPath,
-      keywords: ['k8s', 'kubernetes', 'pods', 'workloads'],
-      action: () => options.navigate(options.paths.kubernetesPodsPath),
-    },
-    {
+    });
+  }
+
+  if (primaryPlatformNavigationIsVisible(options.platformVisibility, 'kubernetes')) {
+    commands.push(
+      {
+        id: 'nav-kubernetes',
+        label: 'Go to Kubernetes',
+        description: options.paths.kubernetesPath,
+        shortcut: 'g k',
+        keywords: ['k8s', 'kubernetes', 'clusters', 'nodes', 'deployments'],
+        action: () => options.navigate(options.paths.kubernetesPath),
+      },
+      {
+        id: 'nav-kubernetes-pods',
+        label: 'Go to Kubernetes Pods',
+        description: options.paths.kubernetesPodsPath,
+        keywords: ['k8s', 'kubernetes', 'pods', 'workloads'],
+        action: () => options.navigate(options.paths.kubernetesPodsPath),
+      },
+    );
+  }
+
+  if (primaryPlatformNavigationIsVisible(options.platformVisibility, 'truenas')) {
+    commands.push({
       id: 'nav-truenas',
       label: 'Go to TrueNAS',
       description: options.paths.trueNasPath,
       shortcut: 'g n',
       keywords: ['truenas', 'storage', 'disks', 'apps'],
       action: () => options.navigate(options.paths.trueNasPath),
-    },
-    {
+    });
+  }
+
+  if (primaryPlatformNavigationIsVisible(options.platformVisibility, 'vmware')) {
+    commands.push({
       id: 'nav-vmware',
       label: 'Go to vSphere',
       description: options.paths.vmwarePath,
       shortcut: 'g v',
       keywords: ['vmware', 'vsphere', 'esxi', 'vms', 'datastores'],
       action: () => options.navigate(options.paths.vmwarePath),
-    },
+    });
+  }
+
+  commands.push(
     {
       id: 'nav-alerts',
       label: 'Go to Alerts',
@@ -97,7 +123,9 @@ export function buildCommandPaletteCommands(options: {
       keywords: ['preferences', 'config'],
       action: () => options.navigate('/settings'),
     },
-  ];
+  );
+
+  return commands;
 }
 
 export function normalizeCommandPaletteQuery(query: string): string {
diff --git a/frontend-modern/src/components/shared/useCommandPaletteState.ts b/frontend-modern/src/components/shared/useCommandPaletteState.ts
index 52dd6063b..6ad8da36c 100644
--- a/frontend-modern/src/components/shared/useCommandPaletteState.ts
+++ b/frontend-modern/src/components/shared/useCommandPaletteState.ts
@@ -14,10 +14,7 @@ import {
   type CommandPaletteModalProps,
 } from './commandPaletteModel';
 
-export type {
-  CommandPaletteModalCommand,
-  CommandPaletteModalProps,
-} from './commandPaletteModel';
+export type { CommandPaletteModalCommand, CommandPaletteModalProps } from './commandPaletteModel';
 
 export function useCommandPaletteState(props: CommandPaletteModalProps) {
   const navigate = useNavigate();
@@ -34,13 +31,12 @@ export function useCommandPaletteState(props: CommandPaletteModalProps) {
         trueNasPath: buildTrueNASPath(),
         vmwarePath: buildVmwarePath(),
       },
+      platformVisibility: props.platformVisibility(),
       navigate,
     }),
   );
 
-  const filteredCommands = createMemo(() =>
-    filterCommandPaletteCommands(commands(), query()),
-  );
+  const filteredCommands = createMemo(() => filterCommandPaletteCommands(commands(), query()));
 
   const handleSelect = (command: CommandPaletteModalCommand) => {
     command.action();
diff --git a/frontend-modern/src/features/platformNavigation/__tests__/platformNavigationModel.test.ts b/frontend-modern/src/features/platformNavigation/__tests__/platformNavigationModel.test.ts
new file mode 100644
index 000000000..9c153deb5
--- /dev/null
+++ b/frontend-modern/src/features/platformNavigation/__tests__/platformNavigationModel.test.ts
@@ -0,0 +1,87 @@
+import { describe, expect, it } from 'vitest';
+import type { Resource } from '@/types/resource';
+import {
+  buildPrimaryPlatformNavigationVisibility,
+  collectResourcePlatformEvidence,
+  selectFirstVisiblePrimaryPlatformNavigationId,
+} from '../platformNavigationModel';
+
+const resource = (overrides: Partial<Resource>): Resource =>
+  ({
+    id: overrides.id ?? 'resource-1',
+    name: overrides.name ?? overrides.id ?? 'resource-1',
+    displayName: overrides.displayName ?? overrides.name ?? overrides.id ?? 'resource-1',
+    type: overrides.type ?? 'agent',
+    platformId: overrides.platformId ?? 'platform-1',
+    platformType: overrides.platformType ?? 'agent',
+    sourceType: overrides.sourceType ?? 'api',
+    status: overrides.status ?? 'online',
+    lastSeen: overrides.lastSeen ?? 1_700_000_000_000,
+    ...overrides,
+  }) as Resource;
+
+describe('platformNavigationModel', () => {
+  it('shows primary platform destinations only when supported resource evidence is present', () => {
+    expect(buildPrimaryPlatformNavigationVisibility([])).toEqual({
+      proxmox: false,
+      docker: false,
+      kubernetes: false,
+      truenas: false,
+      vmware: false,
+    });
+
+    expect(
+      buildPrimaryPlatformNavigationVisibility([
+        resource({ id: 'pve-1', platformType: 'proxmox-pve', type: 'agent' }),
+        resource({
+          id: 'pod-1',
+          platformType: 'agent',
+          type: 'pod',
+          platformData: { sources: ['kubernetes'] },
+        }),
+        resource({ id: 'truenas-1', platformType: 'truenas', type: 'agent' }),
+        resource({ id: 'vcenter-1', platformType: 'vmware-vsphere', type: 'vm' }),
+      ]),
+    ).toEqual({
+      proxmox: true,
+      docker: false,
+      kubernetes: true,
+      truenas: true,
+      vmware: false,
+    });
+  });
+
+  it('derives Proxmox suite evidence from canonical PBS and PMG resource types', () => {
+    expect(collectResourcePlatformEvidence(resource({ id: 'pbs-1', type: 'pbs' }))).toContain(
+      'proxmox-pbs',
+    );
+    expect(collectResourcePlatformEvidence(resource({ id: 'pmg-1', type: 'pmg' }))).toContain(
+      'proxmox-pmg',
+    );
+    expect(
+      buildPrimaryPlatformNavigationVisibility([resource({ id: 'pmg-1', type: 'pmg' })]).proxmox,
+    ).toBe(true);
+  });
+
+  it('selects the first visible platform using the canonical primary navigation order', () => {
+    expect(
+      selectFirstVisiblePrimaryPlatformNavigationId({
+        proxmox: false,
+        docker: false,
+        kubernetes: true,
+        truenas: true,
+        vmware: false,
+      }),
+    ).toBe('kubernetes');
+
+    expect(
+      selectFirstVisiblePrimaryPlatformNavigationId({
+        proxmox: false,
+        docker: false,
+        kubernetes: false,
+        truenas: false,
+        vmware: false,
+      }),
+    ).toBeNull();
+  });
+});
diff --git a/frontend-modern/src/features/platformNavigation/platformNavigationModel.ts b/frontend-modern/src/features/platformNavigation/platformNavigationModel.ts
new file mode 100644
index 000000000..a7959757e
--- /dev/null
+++ b/frontend-modern/src/features/platformNavigation/platformNavigationModel.ts
@@ -0,0 +1,187 @@
+import type { Accessor } from 'solid-js';
+import type { Resource, ResourceType } from '@/types/resource';
+import {
+  SUPPORTED_PLATFORM_IDS,
+  getSourcePlatformManifestEntry,
+  type SourcePlatformManifestEntry,
+} from '@/utils/platformSupportManifest';
+import { normalizeSourcePlatformKey, resolveResourcePlatformType } from '@/utils/sourcePlatforms';
+
+export type PrimaryPlatformNavId = 'proxmox' | 'docker' | 'kubernetes' | 'truenas' | 'vmware';
+
+export type PlatformNavigationVisibility = Record<PrimaryPlatformNavId, boolean>;
+
+export type PlatformNavigationShortcut = {
+  key: string;
+  route: string;
+};
+
+export const PRIMARY_PLATFORM_NAV_IDS: readonly PrimaryPlatformNavId[] = [
+  'proxmox',
+  'docker',
+  'kubernetes',
+  'truenas',
+  'vmware',
+] as const;
+
+export const PRIMARY_PLATFORM_NAV_PLATFORM_IDS: Record<PrimaryPlatformNavId, readonly string[]> = {
+  proxmox: ['proxmox-pve', 'proxmox-pbs', 'proxmox-pmg'],
+  docker: ['docker'],
+  kubernetes: ['kubernetes'],
+  truenas: ['truenas'],
+  vmware: ['vmware-vsphere'],
+};
+
+const SUPPORTED_PLATFORM_ID_SET = new Set<string>(SUPPORTED_PLATFORM_IDS);
+
+const KUBERNETES_RESOURCE_TYPES = new Set<ResourceType>([
+  'k8s-cluster',
+  'k8s-node',
+  'pod',
+  'k8s-deployment',
+  'k8s-service',
+]);
+const DOCKER_RESOURCE_TYPES = new Set<ResourceType>(['docker-host', 'docker-service']);
+
+const asRecord = (value: unknown): Record<string, unknown> | null =>
+  typeof value === 'object' && value !== null ? (value as Record<string, unknown>) : null;
+
+const addManifestPlatformId = (ids: Set<string>, value: string | null | undefined): void => {
+  const normalized = normalizeSourcePlatformKey(value);
+  if (!normalized || normalized === 'generic') return;
+  if (!getSourcePlatformManifestEntry(normalized)) return;
+  ids.add(normalized);
+};
+
+const addPlatformDataSources = (ids: Set<string>, platformData: Record<string, unknown> | null) => {
+  const sources = platformData?.sources;
+  if (!Array.isArray(sources)) return;
+  sources.forEach((source) => {
+    if (typeof source === 'string') addManifestPlatformId(ids, source);
+  });
+};
+
+export function collectResourcePlatformEvidence(resource: Resource): string[] {
+  const ids = new Set<string>();
+  addManifestPlatformId(ids, resource.platformType);
+  addManifestPlatformId(ids, resolveResourcePlatformType(resource));
+  resource.sources?.forEach((source) => addManifestPlatformId(ids, source));
+
+  const platformData = asRecord(resource.platformData);
+  addPlatformDataSources(ids, platformData);
+
+  if (resource.type === 'pbs' || resource.pbs || asRecord(platformData?.pbs)) {
+    ids.add('proxmox-pbs');
+  }
+  if (resource.type === 'pmg' || resource.pmg || asRecord(platformData?.pmg)) {
+    ids.add('proxmox-pmg');
+  }
+  if (resource.proxmox || asRecord(platformData?.proxmox)) {
+    ids.add('proxmox-pve');
+  }
+  if (resource.type === 'ceph' || resource.ceph || asRecord(platformData?.ceph)) {
+    ids.add('proxmox-pve');
+  }
+  if (resource.vmware || asRecord(platformData?.vmware)) {
+    ids.add('vmware-vsphere');
+  }
+  if (resource.kubernetes || asRecord(platformData?.kubernetes)) {
+    ids.add('kubernetes');
+  }
+  if (
+    resource.docker ||
+    asRecord(platformData?.docker) ||
+    DOCKER_RESOURCE_TYPES.has(resource.type)
+  ) {
+    ids.add('docker');
+  }
+  if (KUBERNETES_RESOURCE_TYPES.has(resource.type)) {
+    ids.add('kubernetes');
+  }
+
+  return [...ids];
+}
+
+export function buildSupportedResourcePlatformSet(resources: readonly Resource[]): Set<string> {
+  const present = new Set<string>();
+  for (const resource of resources) {
+    for (const platformId of collectResourcePlatformEvidence(resource)) {
+      const manifestEntry = getSourcePlatformManifestEntry(
+        platformId,
+      ) as SourcePlatformManifestEntry | null;
+      if (!manifestEntry || !SUPPORTED_PLATFORM_ID_SET.has(manifestEntry.id)) continue;
+      present.add(manifestEntry.id);
+    }
+  }
+  return present;
+}
+
+export function buildPrimaryPlatformNavigationVisibility(
+  resources: readonly Resource[],
+): PlatformNavigationVisibility {
+  const presentSupportedPlatforms = buildSupportedResourcePlatformSet(resources);
+  return {
+    proxmox: PRIMARY_PLATFORM_NAV_PLATFORM_IDS.proxmox.some((id) =>
+      presentSupportedPlatforms.has(id),
+    ),
+    docker: PRIMARY_PLATFORM_NAV_PLATFORM_IDS.docker.some((id) =>
+      presentSupportedPlatforms.has(id),
+    ),
+    kubernetes: PRIMARY_PLATFORM_NAV_PLATFORM_IDS.kubernetes.some((id) =>
+      presentSupportedPlatforms.has(id),
+    ),
+    truenas: PRIMARY_PLATFORM_NAV_PLATFORM_IDS.truenas.some((id) =>
+      presentSupportedPlatforms.has(id),
+    ),
+    vmware: PRIMARY_PLATFORM_NAV_PLATFORM_IDS.vmware.some((id) =>
+      presentSupportedPlatforms.has(id),
+    ),
+  };
+}
+
+export function primaryPlatformNavigationIsVisible(
+  visibility: PlatformNavigationVisibility,
+  platformId: PrimaryPlatformNavId,
+): boolean {
+  return visibility[platformId] === true;
+}
+
+export function selectFirstVisiblePrimaryPlatformNavigationId(
+  visibility: PlatformNavigationVisibility,
+): PrimaryPlatformNavId | null {
+  return (
+    PRIMARY_PLATFORM_NAV_IDS.find((platformId) =>
+      primaryPlatformNavigationIsVisible(visibility, platformId),
+    ) ?? null
+  );
+}
+
+export function filterPlatformNavigationShortcuts(
+  shortcuts: Record<string, PlatformNavigationShortcut>,
+  visibility: PlatformNavigationVisibility,
+): Record<string, string> {
+  const routes: Record<string, string> = {};
+  for (const [platformId, shortcut] of Object.entries(shortcuts)) {
+    if (!primaryPlatformNavigationIsVisible(visibility, platformId as PrimaryPlatformNavId)) {
+      continue;
+    }
+    routes[shortcut.key] = shortcut.route;
+  }
+  return routes;
+}
+
+export function createEmptyPlatformNavigationVisibility(): PlatformNavigationVisibility {
+  return {
+    proxmox: false,
+    docker: false,
+    kubernetes: false,
+    truenas: false,
+    vmware: false,
+  };
+}
+
+export function platformNavigationVisibilityFromResources(
+  resources: Accessor<readonly Resource[]>,
+): PlatformNavigationVisibility {
+  return buildPrimaryPlatformNavigationVisibility(resources());
+}
diff --git a/frontend-modern/src/features/proxmox/ProxmoxPageSurface.tsx b/frontend-modern/src/features/proxmox/ProxmoxPageSurface.tsx
index 32a015d2c..f150ac83c 100644
--- a/frontend-modern/src/features/proxmox/ProxmoxPageSurface.tsx
+++ b/frontend-modern/src/features/proxmox/ProxmoxPageSurface.tsx
@@ -28,6 +28,7 @@ import { useUnifiedResources } from '@/hooks/useUnifiedResources';
 import {
   PROXMOX_TAB_SPECS,
   buildProxmoxPageModel,
+  buildVisibleProxmoxTabSpecs,
   type ProxmoxPageTabId,
 } from './proxmoxPageModel';
 
@@ -53,11 +54,16 @@ export function ProxmoxPageSurface() {
     cacheKey: 'proxmox-workspace',
     initialHydration: 'prefer-ws-then-rest',
   });
+  const model = createMemo(() => buildProxmoxPageModel(resources()));
+  const visibleTabs = createMemo(() => buildVisibleProxmoxTabSpecs(model()));
+  const visibleTabIds = createMemo(
+    () => new Set<ProxmoxPageTabId>(visibleTabs().map((tab) => tab.id)),
+  );
   const activeTab = createMemo<ProxmoxPageTabId>(() => {
     const segment = location.pathname.split('/').filter(Boolean)[1] as ProxmoxPageTabId | undefined;
-    return segment && VALID_TABS.has(segment) ? segment : 'overview';
+    if (!segment || !VALID_TABS.has(segment)) return 'overview';
+    return visibleTabIds().has(segment) ? segment : 'overview';
   });
-  const model = createMemo(() => buildProxmoxPageModel(resources()));
 
   // The hosts table at the top and the embedded WorkloadsSurface below share
   // the bars/sparklines toggle (and the sparkline history range that ships
@@ -85,11 +91,7 @@ export function ProxmoxPageSurface() {
 
   return (
     <div data-testid="proxmox-page" class="space-y-3">
-      <PlatformSectionTabs
-        tabs={PROXMOX_TAB_SPECS}
-        active={activeTab()}
-        ariaLabel="Proxmox sections"
-      />
+      <PlatformSectionTabs tabs={visibleTabs()} active={activeTab()} ariaLabel="Proxmox sections" />
 
       <Show
         when={!loading() || model().resources.length > 0}
diff --git a/frontend-modern/src/features/proxmox/__tests__/proxmoxPageModel.test.ts b/frontend-modern/src/features/proxmox/__tests__/proxmoxPageModel.test.ts
index 0e6cad098..5a71f1891 100644
--- a/frontend-modern/src/features/proxmox/__tests__/proxmoxPageModel.test.ts
+++ b/frontend-modern/src/features/proxmox/__tests__/proxmoxPageModel.test.ts
@@ -3,6 +3,7 @@ import type { Resource } from '@/types/resource';
 import {
   PROXMOX_TAB_SPECS,
   buildProxmoxPageModel,
+  buildVisibleProxmoxTabSpecs,
   getResourceVersion,
   resolveProxmoxPlatformScope,
 } from '../proxmoxPageModel';
@@ -119,6 +120,35 @@ describe('proxmoxPageModel', () => {
       change: expect.objectContaining({ id: 'replication-1' }),
     });
     expect(model.resources.map((resource) => resource.id)).not.toContain('docker-host');
+    expect(buildVisibleProxmoxTabSpecs(model).map((tab) => tab.id)).toEqual([
+      'overview',
+      'storage',
+      'replication',
+      'backups',
+      'ceph',
+      'mail',
+    ]);
+  });
+
+  it('hides Proxmox sub-tabs when the connected estate has no matching resource evidence', () => {
+    const model = buildProxmoxPageModel([
+      makeResource({
+        id: 'pve-node-1',
+        type: 'agent',
+        displayName: 'pve-node-1',
+        proxmox: { nodeName: 'pve-node-1', clusterName: 'alpha' },
+      }),
+      makeResource({
+        id: 'vm-101',
+        type: 'vm',
+        displayName: 'database',
+        parentName: 'pve-node-1',
+        status: 'running',
+        proxmox: { vmid: 101, nodeName: 'pve-node-1' },
+      }),
+    ]);
+
+    expect(buildVisibleProxmoxTabSpecs(model).map((tab) => tab.id)).toEqual(['overview']);
   });
 
   it('resolves Proxmox suite scope from canonical platform hints', () => {
diff --git a/frontend-modern/src/features/proxmox/proxmoxPageModel.ts b/frontend-modern/src/features/proxmox/proxmoxPageModel.ts
index 340f70619..a67cdfc71 100644
--- a/frontend-modern/src/features/proxmox/proxmoxPageModel.ts
+++ b/frontend-modern/src/features/proxmox/proxmoxPageModel.ts
@@ -213,6 +213,30 @@ const hasReplicationSignal = (change: ResourceChange): boolean => {
   return haystack.includes('replication') || haystack.includes('replica');
 };
 
+const hasBackupSignal = (resource: Resource): boolean => {
+  if (getResourceLastBackup(resource) !== null) return true;
+  const haystack = [
+    resource.id,
+    resource.name,
+    resource.displayName,
+    ...(resource.tags ?? []),
+    ...(resource.recentChanges ?? []).flatMap((change) => [
+      change.id,
+      change.kind,
+      change.sourceAdapter,
+      change.reason,
+      ...(change.relatedResources ?? []),
+    ]),
+  ]
+    .filter((value): value is string => typeof value === 'string')
+    .join(' ')
+    .toLowerCase();
+
+  return (
+    haystack.includes('backup') || haystack.includes('snapshot') || haystack.includes('vzdump')
+  );
+};
+
 function buildReplicationChanges(resources: Resource[]): ProxmoxReplicationChange[] {
   return resources
     .flatMap((resource) =>
@@ -346,3 +370,25 @@ export function buildProxmoxPageModel(resources: Resource[]): ProxmoxPageModel {
     },
   };
 }
+
+export function buildVisibleProxmoxTabSpecs(model: ProxmoxPageModel): ProxmoxTabSpec[] {
+  const visible = new Set<ProxmoxPageTabId>(['overview']);
+
+  if (model.storage.length > 0 || model.physicalDisks.length > 0) {
+    visible.add('storage');
+  }
+  if (model.replicationChanges.length > 0) {
+    visible.add('replication');
+  }
+  if (model.resources.some(hasBackupSignal) || model.pbs.length > 0) {
+    visible.add('backups');
+  }
+  if (model.ceph.length > 0) {
+    visible.add('ceph');
+  }
+  if (model.pmg.length > 0) {
+    visible.add('mail');
+  }
+
+  return PROXMOX_TAB_SPECS.filter((tab) => visible.has(tab.id));
+}
diff --git a/frontend-modern/src/hooks/useKeyboardShortcuts.ts b/frontend-modern/src/hooks/useKeyboardShortcuts.ts
index c635d4ee9..08233fe78 100644
--- a/frontend-modern/src/hooks/useKeyboardShortcuts.ts
+++ b/frontend-modern/src/hooks/useKeyboardShortcuts.ts
@@ -7,6 +7,11 @@ import {
   buildTrueNASPath,
   buildVmwarePath,
 } from '@/routing/resourceLinks';
+import {
+  createEmptyPlatformNavigationVisibility,
+  filterPlatformNavigationShortcuts,
+  type PlatformNavigationVisibility,
+} from '@/features/platformNavigation/platformNavigationModel';
 import { focusActiveTypeToSearch } from '@/hooks/useTypeToSearch';
 
 type KeyboardShortcutsOptions = {
@@ -20,6 +25,7 @@ type KeyboardShortcutsOptions = {
   onCloseCommandPalette?: () => void;
   onToggleCommandPalette?: () => void;
   onFocusSearch?: () => boolean | void;
+  platformVisibility?: Accessor<PlatformNavigationVisibility>;
 };
 
 const isEditableTarget = (target: EventTarget | null): boolean => {
@@ -76,12 +82,20 @@ export function useKeyboardShortcuts(options: KeyboardShortcutsOptions = {}) {
   };
 
   const getRoutes = (): Record<string, string> => {
+    const platformVisibility =
+      options.platformVisibility?.() ?? createEmptyPlatformNavigationVisibility();
+    const platformRoutes = filterPlatformNavigationShortcuts(
+      {
+        proxmox: { key: 'p', route: buildProxmoxPath() },
+        docker: { key: 'd', route: buildDockerPath() },
+        kubernetes: { key: 'k', route: buildKubernetesPath() },
+        truenas: { key: 'n', route: buildTrueNASPath() },
+        vmware: { key: 'v', route: buildVmwarePath() },
+      },
+      platformVisibility,
+    );
     return {
-      p: buildProxmoxPath(),
-      d: buildDockerPath(),
-      k: buildKubernetesPath(),
-      n: buildTrueNASPath(),
-      v: buildVmwarePath(),
+      ...platformRoutes,
       a: '/alerts',
       r: '/patrol',
       t: '/settings',
diff --git a/frontend-modern/src/pages/NotFound.tsx b/frontend-modern/src/pages/NotFound.tsx
index e1e61acac..18d0a9079 100644
--- a/frontend-modern/src/pages/NotFound.tsx
+++ b/frontend-modern/src/pages/NotFound.tsx
@@ -4,7 +4,6 @@ import { useLocation, useNavigate } from '@solidjs/router';
 import { Card } from '@/components/shared/Card';
 import { EmptyState } from '@/components/shared/EmptyState';
 import { PageHeader } from '@/components/shared/PageHeader';
-import { buildProxmoxPath } from '@/routing/resourceLinks';
 
 const NotFound: Component = () => {
   const location = useLocation();
@@ -24,9 +23,9 @@ const NotFound: Component = () => {
               <button
                 type="button"
                 class="inline-flex items-center gap-2 rounded-md bg-blue-600 px-3 py-1.5 text-xs font-semibold text-white shadow-sm hover:bg-blue-700"
-                onClick={() => navigate(buildProxmoxPath())}
+                onClick={() => navigate('/')}
               >
-                Go to Proxmox
+                Go to workspace
               </button>
             </div>
           }
diff --git a/frontend-modern/src/pages/RuntimeHome.tsx b/frontend-modern/src/pages/RuntimeHome.tsx
index e0b791d08..d4d643435 100644
--- a/frontend-modern/src/pages/RuntimeHome.tsx
+++ b/frontend-modern/src/pages/RuntimeHome.tsx
@@ -1,14 +1,3 @@
-import { useNavigate } from '@solidjs/router';
-import { createEffect } from 'solid-js';
-import { buildProxmoxPath } from '@/routing/resourceLinks';
-
 export default function RuntimeHome() {
-  const navigate = useNavigate();
-  const destination = () => buildProxmoxPath();
-
-  createEffect(() => {
-    navigate(destination(), { replace: true });
-  });
-
   return <div class="px-4 py-6 text-sm text-muted">Opening workspace...</div>;
 }
diff --git a/frontend-modern/src/pages/__tests__/RuntimeHome.test.tsx b/frontend-modern/src/pages/__tests__/RuntimeHome.test.tsx
index 6cd64f914..74a95a2c2 100644
--- a/frontend-modern/src/pages/__tests__/RuntimeHome.test.tsx
+++ b/frontend-modern/src/pages/__tests__/RuntimeHome.test.tsx
@@ -1,27 +1,11 @@
-import { render, waitFor } from '@solidjs/testing-library';
-import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { render, screen } from '@solidjs/testing-library';
+import { describe, expect, it } from 'vitest';
 import RuntimeHome from '@/pages/RuntimeHome';
 
-const navigateSpy = vi.hoisted(() => vi.fn());
-
-vi.mock('@solidjs/router', async () => {
-  const actual = await vi.importActual<typeof import('@solidjs/router')>('@solidjs/router');
-  return {
-    ...actual,
-    useNavigate: () => navigateSpy,
-  };
-});
-
 describe('RuntimeHome', () => {
-  beforeEach(() => {
-    navigateSpy.mockReset();
-  });
-
-  it('routes authenticated runtimes straight to the Proxmox platform page', async () => {
+  it('defers workspace routing to the authenticated app shell', () => {
     render(() => <RuntimeHome />);
 
-    await waitFor(() => {
-      expect(navigateSpy).toHaveBeenCalledWith('/proxmox/overview', { replace: true });
-    });
+    expect(screen.getByText('Opening workspace...')).toBeInTheDocument();
   });
 });