fc-desktop: add phase 1 capacity guards

Root path requires API key auth — `/` returned 401 to the blackbox
probe, firing PrintWebDown despite `/health` reporting Healthy.
Pattern: feedback_k8s_probes_behind_auth_middleware.

Mirrors FlowerCore.Notes scripts/monitoring/prometheus.yml.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/fc-desktop/limitrange.yaml

@@ -0,0 +1,33 @@
+# FlowerCore Remote Desktop - session pod resource defaults
+#
+# Namespace-level LimitRange for Sprint 44 Phase 1. This defends the
+# fc-desktop namespace from unbounded container requests while the
+# per-tenant advisory FairShareEvaluator lands in FlowerCore.RemoteDesktop.
+apiVersion: v1
+kind: LimitRange
+metadata:
+  name: fc-desktop-pod-defaults
+  namespace: fc-desktop
+  labels:
+    app.kubernetes.io/name: fc-desktop
+    app.kubernetes.io/part-of: remotedesktop
+    app.kubernetes.io/component: capacity-guard
+    app.kubernetes.io/managed-by: argocd
+    flowercore.io/owner: infra
+  annotations:
+    flowercore.io/phase: sprint-44-cx-9-phase-a
+spec:
+  limits:
+    - type: Container
+      default:
+        cpu: "1.0"
+        memory: "2Gi"
+      defaultRequest:
+        cpu: "500m"
+        memory: "1Gi"
+      max:
+        cpu: "2.0"
+        memory: "4Gi"
+      min:
+        cpu: "100m"
+        memory: "128Mi"

apps/fc-desktop/resourcequota.yaml

@@ -0,0 +1,36 @@
+# FlowerCore Remote Desktop - namespace ResourceQuota (GitOps-managed)
+#
+# Adopts the live fc-desktop-session-cap object created during the
+# 2026-05-19 prewarm-cascade triage. Sprint 44 Phase 1 keeps the pod,
+# CPU, and memory guard unchanged, then adds storage/PVC backstops from
+# the fc-desktop CPU expansion substrate.
+#
+# Two-phase deploy note:
+#   Phase A: apply this ResourceQuota and limitrange.yaml with the current
+#   FlowerCore.RemoteDesktop image.
+#   Phase B: bump the service image only after the RemoteDesktop service
+#   admission/fair-share code lands in that repo.
+apiVersion: v1
+kind: ResourceQuota
+metadata:
+  name: fc-desktop-session-cap
+  namespace: fc-desktop
+  labels:
+    app.kubernetes.io/name: fc-desktop
+    app.kubernetes.io/part-of: remotedesktop
+    app.kubernetes.io/component: capacity-guard
+    app.kubernetes.io/managed-by: argocd
+    flowercore.io/owner: infra
+  annotations:
+    flowercore.io/rationale: |
+      Operator-requested limit 2026-05-19: cluster CPU exhausted by RD
+      pool prewarm cascade. Preserve count/pods=15 plus requests.cpu=8
+      and requests.memory=16Gi until capacity expansion lands.
+    flowercore.io/phase: sprint-44-cx-9-phase-a
+spec:
+  hard:
+    count/pods: "15"
+    requests.cpu: "8"
+    requests.memory: "16Gi"
+    requests.storage: "500Gi"
+    persistentvolumeclaims: "30"

apps/fc-devicemgmt/argocd-application.yaml

@@ -1,33 +0,0 @@
-# Explicit ArgoCD Application shape for bootstrap/review.
-#
-# The live bluejay-infra ApplicationSet already discovers apps/* directories
-# and creates this same Application name (`infra-fc-devicemgmt`) automatically.
-# Keep repoURL on the internal Gitea ClusterIP URL; ArgoCD does not trust the
-# external step-ca HTTPS endpoint.
-apiVersion: argoproj.io/v1alpha1
-kind: Application
-metadata:
-  name: infra-fc-devicemgmt
-  namespace: argocd
-  labels:
-    app.kubernetes.io/name: fc-devicemgmt
-    app.kubernetes.io/part-of: flowercore
-    app.kubernetes.io/managed-by: argocd
-    flowercore.io/tenant-id: system
-    flowercore.io/created-by: bluejay-infra
-spec:
-  project: default
-  source:
-    repoURL: http://gitea-clusterip.gitea.svc.cluster.local:3000/bluejay/bluejay-infra.git
-    targetRevision: main
-    path: apps/fc-devicemgmt
-  destination:
-    server: https://kubernetes.default.svc
-    namespace: fc-devicemgmt
-  syncPolicy:
-    automated:
-      prune: true
-      selfHeal: true
-    syncOptions:
-      - CreateNamespace=true
-      - ServerSideApply=true

apps/monitoring/noc-monitoring.yaml

@@ -280,13 +280,14 @@ data:
               printer_model: "NuPrint 210"
 
       # Print.Web health (Blazor app on edge2:5200)
+      # Target `/health` (anonymous) — root path requires API key auth and returns 401.
       - job_name: "probe-printweb"
         metrics_path: /probe
         params:
           module: [http_2xx]
         scrape_interval: 30s
         static_configs:
-          - targets: ["http://10.0.57.16:5200/"]
+          - targets: ["http://10.0.57.16:5200/health"]
             labels:
               instance: "print-web"
               service: "print-web"

tests/bluejay-infra-lint/FcDesktopCapacityPolicyTests.cs

@@ -0,0 +1,285 @@
+using FluentAssertions;
+using YamlDotNet.RepresentationModel;
+using Xunit;
+
+namespace BluejayInfraLint.Tests;
+
+[Trait("Category", "Unit")]
+public sealed class FcDesktopCapacityPolicyTests
+{
+    private static readonly ManifestInventory Inventory = ManifestInventory.Load();
+
+    [Fact]
+    public void FcDesktop_AppDirectoryMustExist()
+    {
+        Directory.Exists(Path.Combine(Inventory.BluejayRoot, "apps", "fc-desktop"))
+            .Should()
+            .BeTrue();
+    }
+
+    [Fact]
+    public void FcDesktop_MustHaveExactlyOneResourceQuota()
+    {
+        FcDesktopDocuments()
+            .Where(document => document.Kind == "ResourceQuota")
+            .Should()
+            .ContainSingle();
+    }
+
+    [Fact]
+    public void FcDesktop_ResourceQuotaMustAdoptLiveSessionCapObject()
+    {
+        var quota = ResourceQuota();
+
+        quota.RelativePath.Should().Be("fc-desktop/resourcequota.yaml");
+        quota.Name.Should().Be("fc-desktop-session-cap");
+        quota.Namespace.Should().Be("fc-desktop");
+    }
+
+    [Theory]
+    [InlineData("count/pods", "15")]
+    [InlineData("requests.cpu", "8")]
+    [InlineData("requests.memory", "16Gi")]
+    [InlineData("requests.storage", "500Gi")]
+    [InlineData("persistentvolumeclaims", "30")]
+    public void FcDesktop_ResourceQuotaMustDeclarePhaseOneHardLimits(string key, string value)
+    {
+        ResourceQuota().Scalar("spec", "hard", key).Should().Be(value);
+    }
+
+    [Fact]
+    public void FcDesktop_ResourceQuotaMustCarryTraceableLabels()
+    {
+        ResourceQuotaLabels()
+            .Should()
+            .Contain(new Dictionary<string, string>
+            {
+                ["app.kubernetes.io/name"] = "fc-desktop",
+                ["app.kubernetes.io/part-of"] = "remotedesktop",
+                ["app.kubernetes.io/component"] = "capacity-guard",
+                ["app.kubernetes.io/managed-by"] = "argocd",
+                ["flowercore.io/owner"] = "infra",
+            });
+    }
+
+    [Fact]
+    public void FcDesktop_ResourceQuotaMustUseRequestsKeysForComputeCap()
+    {
+        var hardKeys = HardLimitKeys(ResourceQuota());
+
+        hardKeys.Should().Contain(new[] { "requests.cpu", "requests.memory" });
+        hardKeys.Should().NotContain(new[] { "cpu", "memory" });
+    }
+
+    [Fact]
+    public void FcDesktop_ResourceQuotaMustAvoidDestructiveArgoAnnotations()
+    {
+        var quota = ResourceQuota();
+
+        quota.Scalar("metadata", "annotations", "argocd.argoproj.io/hook").Should().BeNull();
+        quota.Scalar("metadata", "annotations", "argocd.argoproj.io/hook-delete-policy").Should().BeNull();
+
+        var syncOptions = quota.Scalar("metadata", "annotations", "argocd.argoproj.io/sync-options") ?? string.Empty;
+        syncOptions.Should().NotContain("Force=true");
+        syncOptions.Should().NotContain("Replace=true");
+    }
+
+    [Fact]
+    public void FcDesktop_ResourceQuotaMustRecordPhaseAInfraOnlyScope()
+    {
+        ResourceQuota().Scalar("metadata", "annotations", "flowercore.io/phase")
+            .Should()
+            .Be("sprint-44-cx-9-phase-a");
+    }
+
+    [Fact]
+    public void FcDesktop_MustHaveExactlyOneLimitRange()
+    {
+        FcDesktopDocuments()
+            .Where(document => document.Kind == "LimitRange")
+            .Should()
+            .ContainSingle();
+    }
+
+    [Fact]
+    public void FcDesktop_LimitRangeMustLiveBesideResourceQuota()
+    {
+        var limitRange = LimitRange();
+
+        limitRange.RelativePath.Should().Be("fc-desktop/limitrange.yaml");
+        limitRange.Name.Should().Be("fc-desktop-pod-defaults");
+        limitRange.Namespace.Should().Be("fc-desktop");
+    }
+
+    [Fact]
+    public void FcDesktop_LimitRangeMustHaveSingleContainerRule()
+    {
+        var limit = LimitRangeRule();
+
+        LimitRange().MappingSequence("spec", "limits").Should().ContainSingle();
+        ManifestNodeExtensions.Scalar(limit, "type").Should().Be("Container");
+    }
+
+    [Theory]
+    [InlineData("default", "cpu", "1.0")]
+    [InlineData("default", "memory", "2Gi")]
+    [InlineData("defaultRequest", "cpu", "500m")]
+    [InlineData("defaultRequest", "memory", "1Gi")]
+    [InlineData("max", "cpu", "2.0")]
+    [InlineData("max", "memory", "4Gi")]
+    [InlineData("min", "cpu", "100m")]
+    [InlineData("min", "memory", "128Mi")]
+    public void FcDesktop_LimitRangeMustDeclarePerPodShape(string section, string key, string value)
+    {
+        ManifestNodeExtensions.Scalar(LimitRangeRule(), section, key).Should().Be(value);
+    }
+
+    [Fact]
+    public void FcDesktop_LimitRangeMustCarryTraceableLabels()
+    {
+        LimitRangeLabels()
+            .Should()
+            .Contain(new Dictionary<string, string>
+            {
+                ["app.kubernetes.io/name"] = "fc-desktop",
+                ["app.kubernetes.io/part-of"] = "remotedesktop",
+                ["app.kubernetes.io/component"] = "capacity-guard",
+                ["app.kubernetes.io/managed-by"] = "argocd",
+                ["flowercore.io/owner"] = "infra",
+            });
+    }
+
+    [Fact]
+    public void FcDesktop_LimitRangeMustAvoidDestructiveArgoAnnotations()
+    {
+        var limitRange = LimitRange();
+
+        limitRange.Scalar("metadata", "annotations", "argocd.argoproj.io/hook").Should().BeNull();
+        limitRange.Scalar("metadata", "annotations", "argocd.argoproj.io/hook-delete-policy").Should().BeNull();
+
+        var syncOptions = limitRange.Scalar("metadata", "annotations", "argocd.argoproj.io/sync-options") ?? string.Empty;
+        syncOptions.Should().NotContain("Force=true");
+        syncOptions.Should().NotContain("Replace=true");
+    }
+
+    [Fact]
+    public void FcDesktop_LimitRangeMustRecordPhaseAInfraOnlyScope()
+    {
+        LimitRange().Scalar("metadata", "annotations", "flowercore.io/phase")
+            .Should()
+            .Be("sprint-44-cx-9-phase-a");
+    }
+
+    [Fact]
+    public void FcDesktop_BluejayInfraMustNotOwnDeploymentOrService()
+    {
+        FcDesktopDocuments()
+            .Select(document => document.Kind)
+            .Should()
+            .NotContain(new[] { "Deployment", "Service" });
+    }
+
+    [Fact]
+    public void FcDesktop_BluejayInfraMustOnlyOwnInfraResourceKinds()
+    {
+        var allowedKinds = new HashSet<string>(StringComparer.Ordinal)
+        {
+            "Certificate",
+            "IngressRoute",
+            "NetworkPolicy",
+            "ResourceQuota",
+            "LimitRange",
+        };
+
+        FcDesktopDocuments()
+            .Select(document => document.Kind)
+            .Should()
+            .OnlyContain(kind => allowedKinds.Contains(kind));
+    }
+
+    [Fact]
+    public void FcDesktop_NetworkPolicySetMustRemainPresent()
+    {
+        FcDesktopDocuments()
+            .Where(document => document.Kind == "NetworkPolicy")
+            .Select(document => document.Name)
+            .Should()
+            .BeEquivalentTo(
+                "desktop-isolation",
+                "fc-desktop-default-deny",
+                "remotedesktop-web-isolation",
+                "cm-acme-http-solver-allow");
+    }
+
+    [Fact]
+    public void FcDesktop_TlsIngressMustRemainOwnedByInfra()
+    {
+        FcDesktopDocuments()
+            .Should()
+            .Contain(document => document.Kind == "Certificate" && document.Name == "remotedesktop-web-tls")
+            .And
+            .Contain(document => document.Kind == "IngressRoute" && document.Name == "remotedesktop-web");
+    }
+
+    private static IReadOnlyList<ManifestDocument> FcDesktopDocuments()
+    {
+        return Inventory.Documents
+            .Where(document => document.RelativePath.StartsWith("fc-desktop/", StringComparison.Ordinal))
+            .ToList();
+    }
+
+    private static ManifestDocument ResourceQuota()
+    {
+        return FcDesktopDocuments()
+            .Single(document => document.Kind == "ResourceQuota");
+    }
+
+    private static ManifestDocument LimitRange()
+    {
+        return FcDesktopDocuments()
+            .Single(document => document.Kind == "LimitRange");
+    }
+
+    private static YamlMappingNode LimitRangeRule()
+    {
+        return LimitRange()
+            .MappingSequence("spec", "limits")
+            .Single();
+    }
+
+    private static IReadOnlySet<string> HardLimitKeys(ManifestDocument document)
+    {
+        var hard = ManifestNodeExtensions.Mapping(document.Root, "spec", "hard")
+            ?? throw new InvalidOperationException($"{document.Descriptor} is missing spec.hard.");
+
+        return hard.Children.Keys
+            .OfType<YamlScalarNode>()
+            .Select(key => key.Value)
+            .Where(value => !string.IsNullOrWhiteSpace(value))
+            .Cast<string>()
+            .ToHashSet(StringComparer.Ordinal);
+    }
+
+    private static IReadOnlyDictionary<string, string> ResourceQuotaLabels()
+    {
+        return Labels(ResourceQuota());
+    }
+
+    private static IReadOnlyDictionary<string, string> LimitRangeLabels()
+    {
+        return Labels(LimitRange());
+    }
+
+    private static IReadOnlyDictionary<string, string> Labels(ManifestDocument document)
+    {
+        var labels = ManifestNodeExtensions.Mapping(document.Root, "metadata", "labels")
+            ?? throw new InvalidOperationException($"{document.Descriptor} is missing metadata.labels.");
+
+        return labels.Children
+            .Where(entry => entry.Key is YamlScalarNode && entry.Value is YamlScalarNode)
+            .ToDictionary(
+                entry => ((YamlScalarNode)entry.Key).Value ?? string.Empty,
+                entry => ((YamlScalarNode)entry.Value).Value ?? string.Empty,
+                StringComparer.Ordinal);
+    }
+}

tests/bluejay-infra-lint/FleetManifestLintTests.cs

@@ -234,7 +234,7 @@ public sealed class FleetManifestLintTests
         {
             deployments.Should().ContainKey(expectedRunner.Key);
 
-            var container = deployments[expectedRunner.Key].ContainerMappings().Should().ContainSingle().Subject;
+            var container = RunnerContainer(deployments[expectedRunner.Key]);
             EnvValue(container, "REPO_URL").Should().Be(expectedRunner.Value);
             EnvValue(container, "EPHEMERAL").Should().Be("true");
             EnvValue(container, "LABELS").Should().Be("self-hosted,linux,fc-build-linux");
@@ -250,7 +250,7 @@ public sealed class FleetManifestLintTests
     {
         foreach (var deployment in GitHubRunnerDeployments().Values)
         {
-            var container = deployment.ContainerMappings().Should().ContainSingle().Subject;
+            var container = RunnerContainer(deployment);
 
             foreach (var expectedEnv in WritableRunnerEnv)
             {
@@ -430,7 +430,6 @@ public sealed class FleetManifestLintTests
         var expectedFiles = new[]
         {
             "1password-item.yaml",
-            "argocd-application.yaml",
             "certificate-web.yaml",
             "clusterrole-operator.yaml",
             "clusterrolebinding-operator.yaml",
@@ -586,17 +585,15 @@ public sealed class FleetManifestLintTests
     }
 
     [Fact]
-    public void FcDeviceManagement_ArgocdApplicationMustMatchApplicationSetDiscoveryConventions()
+    public void FcDeviceManagement_MustRelyOnApplicationSetDiscovery()
     {
-        var application = FcDeviceManagementDocuments()
-            .Single(document => document.Kind == "Application" && document.Name == "infra-fc-devicemgmt");
-
-        application.Namespace.Should().Be("argocd");
-        application.Scalar("spec", "source", "repoURL")
+        FcDeviceManagementDocuments()
             .Should()
-            .Be("http://gitea-clusterip.gitea.svc.cluster.local:3000/bluejay/bluejay-infra.git");
-        application.Scalar("spec", "source", "path").Should().Be("apps/fc-devicemgmt");
-        application.Scalar("spec", "destination", "namespace").Should().Be("fc-devicemgmt");
+            .NotContain(document => document.Kind == "Application", "the root ApplicationSet owns apps/fc-devicemgmt discovery");
+
+        FcDeviceManagementDocuments()
+            .Should()
+            .Contain(document => document.Kind == "Namespace" && document.Name == "fc-devicemgmt");
     }
 
     private static IEnumerable<string> ProbeViolations(
@@ -631,6 +628,12 @@ public sealed class FleetManifestLintTests
             .ToDictionary(document => document.Name, StringComparer.Ordinal);
     }
 
+    private static YamlMappingNode RunnerContainer(ManifestDocument deployment)
+    {
+        return deployment.ContainerMappings()
+            .Single(container => string.Equals(ManifestNodeExtensions.Scalar(container, "name"), "runner", StringComparison.Ordinal));
+    }
+
     private static int ReplicaCount(ManifestDocument document)
     {
         return int.TryParse(document.Scalar("spec", "replicas"), out var replicas) ? replicas : 1;