feat(docker): show the Clusev host's own containers (host target)

The Docker page only ever targeted fleet servers, so an operator whose
containers run ON the Clusev host itself (the clusev stack + anything
else on that machine) saw nothing — the page has "nothing to do with
the fleet" from their point of view. It now has a target switch:

  • Clusev host (default when a host SSH login exists) — lists the
    containers on the machine Clusev runs on, reached over the local
    Docker gateway with the existing encrypted HostCredential, the same
    login the host terminal uses.
  • the active fleet server — the previous behaviour, still available.

Mechanics:
- HostCredential::toServer() builds a TRANSIENT Server (never persisted)
  carrying the host login; DockerService/FleetService run unchanged
  against it. The logs modal resolves serverId 0 to this host server.
- VerifiesHostKey only pins (writes ssh_host_key) for persisted fleet
  servers now; a transient host connection no longer spawns a junk
  fleet row on every request. The host is the local gateway — no
  network path to MITM — so skipping the pin there is safe.
- The `app` service (dev + prod compose) gains the
  host.docker.internal:host-gateway mapping the terminal sidecar already
  had, so the PHP layer can reach the host's sshd. Without it the app
  container cannot resolve the host at all — the real reason host Docker
  never worked.
- Absent runtime still renders the clean "not installed" state; a
  host target with no login yet shows a setup hint.

Verified end-to-end in a browser: the page defaults to the host and
lists the full running stack (clusev-app/mariadb/redis/… + others) with
Logs/Restart/Stop actions. 748 tests green (5 new host-target tests).

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

app/Livewire/Docker/Index.php

@@ -4,6 +4,8 @@ namespace App\Livewire\Docker;
 
 use App\Livewire\Concerns\WithFleetContext;
 use App\Models\AuditEvent;
+use App\Models\HostCredential;
+use App\Models\Server;
 use App\Services\DockerService;
 use Illuminate\Contracts\View\View;
 use Illuminate\Support\Facades\Auth;
@@ -13,15 +15,20 @@ use Livewire\Component;
 use Throwable;
 
 /**
- * Container management for the active fleet server (agentless over SSH). Viewing the list is open
- * to any role; container actions (start/stop/restart/pause) require `operate`, matching how systemd
- * service actions are gated. Loads lazily via wire:init like Files/Services.
+ * Container management over SSH. Two targets: the CLUSEV HOST itself (the machine Clusev runs on,
+ * reached via the stored HostCredential over the local Docker gateway) and any fleet server. The
+ * host is the default when configured — that is where the operator's own containers live. Viewing
+ * the list is open to any role; container actions (start/stop/restart) require `operate`, matching
+ * systemd service gating. Loads lazily via wire:init like Files/Services.
  */
 #[Layout('layouts.app')]
 class Index extends Component
 {
     use WithFleetContext;
 
+    /** '' = auto (host when a host login exists, else the active fleet server); or 'host' / 'server'. */
+    public string $target = '';
+
     /** @var array<int, array<string, string>> */
     public array $containers = [];
 
@@ -29,9 +36,12 @@ class Index extends Component
 
     public bool $ready = false;
 
-    /** Docker binary absent on the host (e.g. a native mail server) — an honest state, not an error. */
+    /** Docker binary absent on the target (e.g. a native mail server) — an honest state, not an error. */
     public bool $notInstalled = false;
 
+    /** Host target selected but no host SSH login configured yet — points the operator to setup. */
+    public bool $hostNotConfigured = false;
+
     /** The docker error (daemon down / permission / rootless), surfaced so "empty" isn't misleading. */
     public ?string $error = null;
 
@@ -40,22 +50,65 @@ class Index extends Component
         return __('docker.title');
     }
 
+    /** Whether a Clusev-host SSH login exists (controls the target switch + the default target). */
+    public function hostConfigured(): bool
+    {
+        return HostCredential::current() !== null;
+    }
+
+    /** Resolve '' to a concrete target: the host when one is configured, otherwise a fleet server. */
+    public function effectiveTarget(): string
+    {
+        if ($this->target === 'host' || $this->target === 'server') {
+            return $this->target;
+        }
+
+        return $this->hostConfigured() ? 'host' : 'server';
+    }
+
+    /** The Server the current target resolves to (transient host server, or the active fleet server). */
+    private function targetServer(): ?Server
+    {
+        return $this->effectiveTarget() === 'host'
+            ? HostCredential::current()?->toServer()
+            : $this->activeServer();
+    }
+
+    /** Switch between the host and the active fleet server, then reload. */
+    public function setTarget(string $target, DockerService $docker): void
+    {
+        $this->target = in_array($target, ['host', 'server'], true) ? $target : '';
+        $this->ready = false;
+        $this->load($docker);
+    }
+
     public function load(DockerService $docker): void
     {
         $this->containers = [];
         $this->connected = false;
         $this->notInstalled = false;
+        $this->hostNotConfigured = false;
         $this->error = null;
 
-        $active = $this->activeServer();
-        if ($active && $active->credential_exists) {
+        $isHost = $this->effectiveTarget() === 'host';
+        $server = $this->targetServer();
+
+        if ($isHost && ! $server) {
+            $this->hostNotConfigured = true;
+            $this->ready = true;
+
+            return;
+        }
+
+        // Fleet servers need a stored credential; the host server always carries the host login.
+        if ($server && ($isHost || $server->credential_exists)) {
             try {
-                // Probe first: a host with no docker binary (native mail/web server) gets a clean
+                // Probe first: a target with no docker binary (native mail/web server) gets a clean
                 // "not installed" panel instead of the raw "sh: docker: not found" shell error.
-                if (! $docker->available($active)) {
+                if (! $docker->available($server)) {
                     $this->notInstalled = true;
                 } else {
-                    $this->containers = $docker->containers($active);
+                    $this->containers = $docker->containers($server);
                     $this->connected = true;
                 }
             } catch (Throwable $e) {
@@ -71,19 +124,20 @@ class Index extends Component
     {
         abort_unless(Auth::user()?->can('operate'), 403);
 
-        $active = $this->activeServer();
-        if (! $active || ! $active->credential_exists) {
+        $isHost = $this->effectiveTarget() === 'host';
+        $server = $this->targetServer();
+        if (! $server || (! $isHost && ! $server->credential_exists)) {
             return;
         }
 
         try {
-            $res = $docker->containerAction($active, $id, $op);
+            $res = $docker->containerAction($server, $id, $op);
             AuditEvent::create([
                 'user_id' => Auth::id(),
-                'server_id' => $active->id,
+                'server_id' => $server->id, // null for the host (transient) — the target label names it
                 'actor' => Auth::user()?->name ?? 'system',
                 'action' => 'docker.action',
-                'target' => "{$op} {$id} · {$active->name}",
+                'target' => "{$op} {$id} · {$server->name}",
                 'ip' => request()->ip(),
             ]);
             $this->dispatch('notify', message: $res['ok']
@@ -103,13 +157,15 @@ class Index extends Component
         // operate action — consistent with gating file CONTENT reads. The list itself stays open.
         abort_unless(Auth::user()?->can('operate'), 403);
 
-        $active = $this->activeServer();
-        if (! $active) {
+        $isHost = $this->effectiveTarget() === 'host';
+        $server = $this->targetServer();
+        if (! $server) {
             return;
         }
 
         $this->dispatch('openModal', component: 'modals.container-logs', arguments: [
-            'serverId' => $active->id,
+            // 0 is the sentinel the logs modal resolves to the Clusev host (no persisted id).
+            'serverId' => $isHost ? 0 : (int) $server->id,
             'ref' => $id,
         ]);
     }

app/Livewire/Modals/ContainerLogs.php

@@ -2,6 +2,7 @@
 
 namespace App\Livewire\Modals;
 
+use App\Models\HostCredential;
 use App\Models\Server;
 use App\Services\DockerService;
 use Illuminate\Support\Facades\Auth;
@@ -38,7 +39,10 @@ class ContainerLogs extends ModalComponent
         // Re-gate the actual read (not just the opener): logs can leak secrets → operate only.
         abort_unless(Auth::user()?->can('operate'), 403);
 
-        $server = Server::find($this->serverId);
+        // serverId 0 = the Clusev host (transient server from the host login); otherwise a fleet server.
+        $server = $this->serverId === 0
+            ? HostCredential::current()?->toServer()
+            : Server::find($this->serverId);
         if (! $server) {
             $this->error = __('common.server_not_found');
             $this->loaded = true;

app/Models/HostCredential.php

@@ -28,4 +28,29 @@ class HostCredential extends Model
     {
         return static::query()->orderBy('id')->first();
     }
+
+    /**
+     * A TRANSIENT Server (never persisted) that points SSH tooling — FleetService, DockerService —
+     * at the Clusev host itself, reusing the encrypted host login. The SshCredential is likewise
+     * transient; its encrypted 'secret' cast round-trips the plaintext back for CredentialVault.
+     * verifyHostKey skips pinning a non-persisted server, so this creates no fleet row.
+     */
+    public function toServer(): Server
+    {
+        $cred = new SshCredential(['username' => $this->username, 'auth_type' => $this->auth_type]);
+        $cred->secret = $this->secret;
+        if ($this->passphrase) {
+            $cred->passphrase = $this->passphrase;
+        }
+
+        $server = new Server([
+            'name' => 'Clusev Host',
+            'ip' => $this->host,
+            'ssh_port' => $this->port,
+            'status' => 'online',
+        ]);
+        $server->setRelation('credential', $cred);
+
+        return $server;
+    }
 }

app/Support/Ssh/VerifiesHostKey.php

@@ -32,7 +32,13 @@ trait VerifiesHostKey
             return;
         }
 
-        // trust on first use
+        // Trust on first use — but ONLY pin persisted fleet servers. A transient Server (the
+        // "Clusev host" built on the fly from HostCredential) must never be written to the DB:
+        // saving it would spawn a junk fleet row on every request. The host is reached over the
+        // local Docker gateway (host.docker.internal), which has no network path to MITM, so
+        // skipping the pin there is safe.
+        if ($server->exists) {
             $server->forceFill(['ssh_host_key' => $hostKey])->save();
         }
+    }
 }

docker-compose.prod.yml

@@ -32,6 +32,10 @@ x-image: &image
   security_opt:
     - "no-new-privileges:true"
   pids_limit: 1024
+  # Reach the Docker host's sshd from the PHP layer so the "Clusev host" Docker view (and any other
+  # host-targeted SSH) can talk to the real machine — same mapping the terminal sidecar uses.
+  extra_hosts:
+    - "host.docker.internal:host-gateway"
 
 services:
   app:

docker-compose.yml

@@ -12,6 +12,11 @@ x-app: &app
       APP_GID: "${HOST_GID:-1002}"
   image: clusev-app:dev
   restart: unless-stopped
+  # Reach the Docker host's sshd from the PHP layer so the "Clusev host" Docker view (and any
+  # other host-targeted SSH) can talk to the real machine (host.docker.internal → host gateway),
+  # the same mapping the terminal sidecar already uses.
+  extra_hosts:
+    - "host.docker.internal:host-gateway"
   volumes:
     - .:/var/www/html
     - ./run:/var/www/html/storage/app/restart-signal

lang/de/docker.php

@@ -7,6 +7,12 @@ return [
     'connected' => 'Verbunden',
     'disconnected' => 'Getrennt',
 
+    'target_label' => 'Ziel',
+    'host_target' => 'Clusev-Host',
+    'server_target' => 'Server',
+    'host_unconfigured_title' => 'Host-SSH nicht eingerichtet',
+    'host_unconfigured_hint' => 'Richte den Host-SSH-Zugang unter Terminal (Kachel „Clusev-Host“) ein, um die Container dieses Hosts zu sehen.',
+
     'unavailable_title' => 'Docker nicht verfügbar',
     'unavailable_hint' => 'Daemon aus oder keine Berechtigung.',
     'not_installed_title' => 'Docker nicht installiert',

lang/en/docker.php

@@ -7,6 +7,12 @@ return [
     'connected' => 'Connected',
     'disconnected' => 'Disconnected',
 
+    'target_label' => 'Target',
+    'host_target' => 'Clusev host',
+    'server_target' => 'Server',
+    'host_unconfigured_title' => 'Host SSH not configured',
+    'host_unconfigured_hint' => 'Set up the host SSH login under Terminal (the “Clusev host” tile) to see this host’s containers.',
+
     'unavailable_title' => 'Docker unavailable',
     'unavailable_hint' => 'The daemon is down, or no permission.',
     'not_installed_title' => 'Docker not installed',

resources/views/livewire/docker/index.blade.php

@@ -6,6 +6,10 @@
         in_array($s, ['created', 'restarting'], true) => 'pending',
         default => 'offline', // exited / dead / removing
     };
+    $hostOn = $this->hostConfigured();
+    $effTarget = $this->effectiveTarget();
+    $active = $this->activeServer();
+    $targetName = $effTarget === 'host' ? __('docker.host_target') : $active?->name;
 @endphp
 
 <div class="space-y-4" @if (! $ready) wire:init="load" @endif>
@@ -15,10 +19,34 @@
             <p class="font-mono text-[11px] uppercase tracking-[0.2em] text-accent-text">{{ __('docker.eyebrow') }}</p>
             <h2 class="mt-0.5 font-display text-xl font-semibold text-ink sm:text-2xl">{{ __('docker.title') }}</h2>
         </div>
+
+        <div class="flex flex-wrap items-center gap-3">
+            {{-- Target switch: the Clusev host vs the active fleet server (only when a host login exists) --}}
+            @if ($hostOn)
+                <div class="inline-flex rounded-lg border border-line bg-surface p-0.5" role="tablist" aria-label="{{ __('docker.target_label') }}">
+                    <button type="button" wire:click="setTarget('host')"
+                        @class([
+                            'rounded-md px-3 py-1 font-mono text-[11px] transition-colors',
+                            'bg-accent/15 text-accent-text' => $effTarget === 'host',
+                            'text-ink-3 hover:text-ink' => $effTarget !== 'host',
+                        ])
+                        aria-selected="{{ $effTarget === 'host' ? 'true' : 'false' }}">{{ __('docker.host_target') }}</button>
+                    <button type="button" wire:click="setTarget('server')" @disabled(! $active)
+                        @class([
+                            'rounded-md px-3 py-1 font-mono text-[11px] transition-colors',
+                            'bg-accent/15 text-accent-text' => $effTarget === 'server',
+                            'text-ink-3 hover:text-ink' => $effTarget !== 'server',
+                            'cursor-not-allowed opacity-40' => ! $active,
+                        ])
+                        aria-selected="{{ $effTarget === 'server' ? 'true' : 'false' }}">{{ $active?->name ?? __('docker.server_target') }}</button>
+                </div>
+            @endif
+
             <x-status-pill :status="$connected ? 'online' : 'offline'">{{ $connected ? __('docker.connected') : __('docker.disconnected') }}</x-status-pill>
         </div>
+    </div>
 
-    <x-panel :title="__('docker.containers_title')" :subtitle="$this->activeServer()?->name" :padded="false">
+    <x-panel :title="__('docker.containers_title')" :subtitle="$targetName" :padded="false">
         @if (! $ready)
             {{-- lazy skeleton --}}
             <div class="space-y-2 p-4 sm:p-5">
@@ -26,8 +54,17 @@
                     <div class="h-12 animate-pulse rounded-md bg-raised/50"></div>
                 @endfor
             </div>
+        @elseif ($hostNotConfigured)
+            {{-- Host target picked but no host SSH login yet — send the operator to setup. --}}
+            <div class="px-4 py-10 text-center sm:px-5">
+                <div class="mx-auto flex h-10 w-10 items-center justify-center rounded-full bg-raised text-ink-3">
+                    <x-icon name="terminal" class="h-5 w-5" />
+                </div>
+                <p class="mt-3 text-sm text-ink-2">{{ __('docker.host_unconfigured_title') }}</p>
+                <p class="mx-auto mt-1 max-w-md font-mono text-[11px] text-ink-4">{{ __('docker.host_unconfigured_hint') }}</p>
+            </div>
         @elseif ($notInstalled)
-            {{-- Honest, neutral state: the host simply has no docker (not a fault). --}}
+            {{-- Honest, neutral state: the target simply has no docker (not a fault). --}}
             <div class="px-4 py-10 text-center sm:px-5">
                 <div class="mx-auto flex h-10 w-10 items-center justify-center rounded-full bg-raised text-ink-3">
                     <x-icon name="box" class="h-5 w-5" />

tests/Feature/DockerComponentTest.php

@@ -4,6 +4,7 @@ namespace Tests\Feature;
 
 use App\Livewire\Docker\Index;
 use App\Livewire\Modals\ContainerLogs;
+use App\Models\HostCredential;
 use App\Models\Server;
 use App\Models\User;
 use App\Services\DockerService;
@@ -56,6 +57,89 @@ class DockerComponentTest extends TestCase
         return $docker;
     }
 
+    private function hostCred(): HostCredential
+    {
+        return HostCredential::create([
+            'host' => 'host.docker.internal', 'port' => 22,
+            'username' => 'root', 'auth_type' => 'password', 'secret' => 'x',
+        ]);
+    }
+
+    public function test_defaults_to_the_clusev_host_when_a_host_login_is_configured(): void
+    {
+        // The host is where the operator's own containers live, so it is the default target.
+        $this->actingAs($this->viewer());
+        $this->hostCred();
+        $this->activeServer(); // a fleet server also exists, but the host wins the default
+        $this->stubDocker([['id' => 'h1', 'name' => 'clusev-app-1', 'image' => 'clusev-app:prod', 'state' => 'running', 'status' => 'Up', 'ports' => '']]);
+
+        Livewire::test(Index::class)
+            ->call('load')
+            ->assertOk()
+            ->assertSet('connected', true)
+            ->assertSee('clusev-app-1')
+            ->assertSee(__('docker.host_target'));
+    }
+
+    public function test_switching_to_host_without_a_login_shows_the_unconfigured_state(): void
+    {
+        $this->actingAs($this->viewer());
+        $this->activeServer();
+        $this->stubDocker();
+
+        Livewire::test(Index::class)
+            ->call('setTarget', 'host')
+            ->assertOk()
+            ->assertSet('hostNotConfigured', true)
+            ->assertSet('connected', false)
+            ->assertSee(__('docker.host_unconfigured_title'));
+    }
+
+    public function test_can_switch_from_the_host_to_the_active_fleet_server(): void
+    {
+        $this->actingAs($this->viewer());
+        $this->hostCred();
+        $this->activeServer();
+        $this->stubDocker([['id' => 's1', 'name' => 'web', 'image' => 'nginx', 'state' => 'running', 'status' => 'Up', 'ports' => '80/tcp']]);
+
+        Livewire::test(Index::class)
+            ->call('setTarget', 'server')
+            ->assertOk()
+            ->assertSet('connected', true)
+            ->assertSee('web');
+    }
+
+    public function test_operator_can_action_a_host_container_and_it_is_audited(): void
+    {
+        $this->actingAs($this->operator());
+        $this->hostCred(); // default target = host
+        $docker = $this->stubDocker();
+        $docker->shouldReceive('containerAction')->once()
+            ->with(Mockery::type(Server::class), 'clusev-redis-1', 'restart')
+            ->andReturn(['ok' => true, 'output' => '']);
+
+        Livewire::test(Index::class)
+            ->call('action', 'clusev-redis-1', 'restart')
+            ->assertOk();
+
+        // Host actions carry a null server_id (transient host server); the target label names it.
+        $this->assertDatabaseHas('audit_events', ['action' => 'docker.action', 'server_id' => null]);
+    }
+
+    public function test_logs_modal_loads_a_host_container_tail(): void
+    {
+        $this->actingAs($this->admin());
+        $this->hostCred();
+        $docker = Mockery::mock(DockerService::class);
+        $docker->shouldReceive('logs')->once()->with(Mockery::type(Server::class), 'clusev-app-1', 200)->andReturn('host log line');
+        app()->instance(DockerService::class, $docker);
+
+        Livewire::test(ContainerLogs::class, ['serverId' => 0, 'ref' => 'clusev-app-1'])
+            ->call('load')
+            ->assertOk()
+            ->assertSet('logs', 'host log line');
+    }
+
     public function test_viewer_can_browse_the_container_list(): void
     {
         $this->actingAs($this->viewer());