feat(dashboard): add canvas view with active deployment overlay

Add a /dashboard/canvas page that renders every team server with its
resources and their running or queued deployments, backed by a new
ServerCanvasController::dashboard endpoint and a per-server usage
endpoint for zone headers. The dashboard remembers the list/canvas
choice and each section (projects, servers) its own table/grid view.

- Show Deploying/Queued pills on canvas cards and a foldable recent
  deployments panel; add shared CanvasControls component
- Allow backup downloads from the server host via the S3 download
  storage (PrepareFileDownloadJob accepts a null container)
- Extract backup toggle/run actions into ManagesDatabaseBackup and
  surface them in backup execution headers; merge S3 and retention
  sections into the general backup settings
- Move deployments indicator to the top bar and add a main nav
  resource menu with submenus; simplify breadcrumbs and settings
  layouts
- Add shared variables overview canvas and scheduled task modals
- Add feature tests for dashboard canvas, view modes, navbar
  submenus, backup S3 downloads and scheduled task modals

tests/Feature/ResourceMenuInMainNavTest.php

@@ -0,0 +1,118 @@
+<?php
+
+use App\Models\Application;
+use App\Models\Environment;
+use App\Models\InstanceSettings;
+use App\Models\Project;
+use App\Models\S3Storage;
+use App\Models\Server;
+use App\Models\StandaloneDocker;
+use App\Models\StandalonePostgresql;
+use App\Models\Team;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    $this->user = User::factory()->create();
+    $this->team = Team::factory()->create();
+    $this->team->members()->attach($this->user->id, ['role' => 'owner']);
+
+    InstanceSettings::unguarded(function () {
+        InstanceSettings::query()->create([
+            'id' => 0,
+            'is_registration_enabled' => true,
+        ]);
+    });
+
+    $this->actingAs($this->user);
+    session(['currentTeam' => $this->team]);
+
+    $this->server = Server::factory()->create(['team_id' => $this->team->id]);
+    $this->destination = StandaloneDocker::query()->where('server_id', $this->server->id)->firstOrFail();
+    $this->project = Project::factory()->create(['team_id' => $this->team->id]);
+    $this->environment = Environment::factory()->create(['project_id' => $this->project->id]);
+    $this->application = Application::factory()->create([
+        'environment_id' => $this->environment->id,
+        'destination_id' => $this->destination->id,
+        'destination_type' => $this->destination->getMorphClass(),
+        'name' => 'Navbar Menu App',
+        'status' => 'running',
+    ]);
+});
+
+test('an application page teleports its menu into the main sidebar ', function () {
+    $response = $this->get(route('project.application.configuration', [
+        'project_uuid' => $this->project->uuid,
+        'environment_uuid' => $this->environment->uuid,
+        'application_uuid' => $this->application->uuid,
+    ]));
+
+    $response->assertSuccessful();
+    $html = $response->getContent();
+
+    expect($html)
+        ->toContain('id="main-nav-context"')
+        ->toContain('x-teleport="#main-nav-context"')
+        ->toContain('application-settings-navigation in-main-nav')
+        ->toMatch('#href="'.preg_quote(route('dashboard'), '#').'"[^>]*title="Back to the dashboard"#')
+        ->and(substr_count($html, 'id="main-nav-context"'))->toBe(1);
+});
+
+test('pages without a resource menu keep the main menu on wide screens', function () {
+    $response = $this->get(route('project.resource.index', ['project_uuid' => $this->project->uuid, 'environment_uuid' => $this->environment->uuid]));
+
+    $response->assertSuccessful();
+    expect($response->getContent())->not->toContain('id="main-nav-context"');
+});
+
+test('a database page teleports its menu into the main sidebar', function () {
+    $database = StandalonePostgresql::create([
+        'name' => 'orders-db', 'postgres_user' => 'postgres', 'postgres_password' => 'password', 'postgres_db' => 'db',
+        'image' => 'postgres:17', 'environment_id' => $this->environment->id,
+        'destination_id' => $this->destination->id, 'destination_type' => $this->destination->getMorphClass(),
+    ]);
+
+    $html = $this->get(route('project.database.configuration', [
+        'project_uuid' => $this->project->uuid,
+        'environment_uuid' => $this->environment->uuid,
+        'database_uuid' => $database->uuid,
+    ]))->assertSuccessful()->getContent();
+
+    expect($html)
+        ->toContain('id="main-nav-context"')
+        ->toContain('x-teleport="#main-nav-context"')
+        ->toContain('application-settings-navigation in-main-nav');
+});
+
+test('a server page teleports its menu into the main sidebar with a back row to the servers', function () {
+    $html = $this->get(route('server.show', ['server_uuid' => $this->server->uuid]))
+        ->assertSuccessful()
+        ->getContent();
+
+    expect($html)
+        ->toContain('x-teleport="#main-nav-context"')
+        ->toContain('application-settings-navigation in-main-nav')
+        ->toMatch('#href="'.preg_quote(route('server.index'), '#').'"[^>]*title="Back to the servers"#')
+        ->and(substr_count($html, 'proxyConfigurationPending: '))->toBe(2);
+});
+
+test('integration detail pages teleport their menu with a back row to their list', function () {
+    $storage = S3Storage::create([
+        'name' => 'backup-bucket', 'region' => 'us-east-1', 'key' => 'access-key', 'secret' => 'secret-key',
+        'bucket' => 'coolify-backups', 'endpoint' => 'https://s3.example.com', 'team_id' => $this->team->id, 'is_usable' => true,
+    ]);
+
+    $pages = [
+        [route('storage.show', ['storage_uuid' => $storage->uuid]), route('storage.index'), 'Back to the S3 storages'],
+        [route('destination.show', ['destination_uuid' => $this->destination->uuid]), route('destination.index'), 'Back to the destinations'],
+    ];
+
+    foreach ($pages as [$url, $backHref, $backTitle]) {
+        expect($this->get($url)->assertSuccessful()->getContent())
+            ->toContain('x-teleport="#main-nav-context"')
+            ->toContain('application-settings-navigation in-main-nav')
+            ->toMatch('#href="'.preg_quote($backHref, '#').'"[^>]*title="'.$backTitle.'"#');
+    }
+});