tests: add bluejay-ws runner-exclusion lint + fix 3 stale runner-fleet assertions

Adds Runners_MustNotPinToOperatorWorkstationHosts lint test enforcing
operator directive 2026-05-26: BLUEJAY-WS / iamworkin-ws must never be
a fleet GitHub Actions runner. Build-side analog of the Sprint 9 NEW
safe-account exclusion gate (Puppet GPO/AppLocker/WDAC/audit-forwarder
modules refuse to apply on BLUEJAY-WS). Scans every github-runner
Deployment for forbidden nodeName, nodeSelector, nodeAffinity match
expressions, and toleration key/value pinning. See CLAUDE.md "Common
Mistakes" entry and feedback_bluejay_ws_never_public_runner.md.

Also fixes 3 pre-existing GitHubRunnerFleet_* lint failures that broke
when the runner image bumped to v20260525-ruby3.3.11-stepca (added a
setup-runner-home initContainer):

  * Add MainContainerMappings() helper (containers only, excludes
    initContainers) and switch
    GitHubRunnerFleet_MustRegisterRequiredReposAsRepoScopedDeployments
    + GitHubRunnerFleet_MustSetWritableNonRootDotnetAndCachePaths
    over to it. Without this, ContainerMappings().Should().ContainSingle()
    found the initContainer + runner = 2 containers and failed.

  * Loosen GitHubRunnerFleet_MustAvoidRwoMultiAttachForScaledDeployments
    ReplicaCount assertion from Be(2) to BeGreaterOrEqualTo(2). The
    semantic invariant is "at least 2 replicas so no single-pod
    bottleneck"; deployments tuned upward per 14d CI activity (e.g.
    github-runner-print-web at replicas: 3, see commit 1f1f682 PR #24)
    are valid.

Lint baseline: 6 failed -> 3 failed (the 3 remaining are unrelated:
PublicReadWriteIngressRoutes_* lives in FlowerCore.Updater/k8s/
ingressroute.yaml — separate PR; FcDeviceManagement_* needs operator
domain decision on the missing apps/fc-devicemgmt/argocd-application.yaml).

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

apps/github-runner/Dockerfile

@@ -12,6 +12,15 @@ ENV PATH="/home/runner/_tool/Ruby/${RUBY_MINOR}/x64/bin:/opt/runner-toolcache/Ru
 
 USER root
 
+# Bake the IAmWorkin step-ca root CA into the system trust store. Without
+# this, .NET HttpClient calls from CI tests against *.iamworkin.lan
+# (e.g. https://selenium.iamworkin.lan/session) fail with `PartialChain`
+# because the runner image's default Ubuntu trust bundle doesn't include
+# our internal Root CA. update-ca-certificates regenerates
+# /etc/ssl/certs/ca-certificates.crt, which OpenSSL + .NET on Linux read
+# automatically — no SSL_CERT_FILE env var needed.
+COPY step-ca-root.crt /usr/local/share/ca-certificates/iamworkin-step-ca-root.crt
+
 RUN apt-get update \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
         autoconf \
@@ -31,6 +40,7 @@ RUN apt-get update \
         pkg-config \
         uuid-dev \
         zlib1g-dev \
+    && update-ca-certificates \
     && curl -fsSL "https://github.com/rbenv/ruby-build/archive/refs/tags/${RUBY_BUILD_VERSION}.tar.gz" -o /tmp/ruby-build.tar.gz \
     && mkdir -p /tmp/ruby-build \
     && tar -xzf /tmp/ruby-build.tar.gz --strip-components=1 -C /tmp/ruby-build \

apps/github-runner/README.md

@@ -7,7 +7,7 @@ Deployments with `kubectl`; update this manifest and let ArgoCD reconcile.
 
 All repo-scoped Linux runners use:
 
-- `localhost/fc-github-runner:v20260520-ruby3.3.11`, derived from
+- `localhost/fc-github-runner:v20260525-ruby3.3.11-stepca`, derived from
   `myoung34/github-runner:latest`
 - `ACCESS_TOKEN` from the `github-runner-token` Secret
 - `RUN_AS_ROOT=false`
@@ -40,14 +40,26 @@ still mounts an `emptyDir` over `/home/runner`, so the `setup-runner-home` init
 container copies the baked toolcache from `/opt/runner-toolcache/Ruby` into
 `/home/runner/_tool/Ruby` before the runner container starts.
 
+The IAmWorkin step-ca root CA is also baked into the system trust store
+(`/usr/local/share/ca-certificates/iamworkin-step-ca-root.crt`, registered by
+`update-ca-certificates`). Without it, .NET HttpClient calls from CI tests
+against `*.iamworkin.lan` (e.g. `https://selenium.iamworkin.lan/session`)
+fail with `PartialChain`. To refresh the bundled cert when the root rotates,
+re-extract from the cluster and overwrite `step-ca-root.crt`:
+
+```bash
+kubectl get secret -n cert-manager step-ca-root \
+  -o jsonpath='{.data.ca\.crt}' | base64 -d > step-ca-root.crt
+```
+
 ```bash
 cd apps/github-runner
-podman build -t localhost/fc-github-runner:v20260520-ruby3.3.11 .
-podman run --rm localhost/fc-github-runner:v20260520-ruby3.3.11 ruby -v
-podman run --rm localhost/fc-github-runner:v20260520-ruby3.3.11 \
+podman build -t localhost/fc-github-runner:v20260525-ruby3.3.11-stepca .
+podman run --rm localhost/fc-github-runner:v20260525-ruby3.3.11-stepca ruby -v
+podman run --rm localhost/fc-github-runner:v20260525-ruby3.3.11-stepca \
   test -f /opt/runner-toolcache/Ruby/3.3/x64.complete
-podman save localhost/fc-github-runner:v20260520-ruby3.3.11 \
-  -o fc-github-runner-v20260520-ruby3.3.11.tar
+podman save localhost/fc-github-runner:v20260525-ruby3.3.11-stepca \
+  -o fc-github-runner-v20260525-ruby3.3.11-stepca.tar
 ```
 
 Import the saved image on every schedulable RKE2 node before ArgoCD rolls the
@@ -55,9 +67,9 @@ Deployments:
 
 ```bash
 for node in rke2-server rke2-agent1 rke2-agent2; do
-  scp fc-github-runner-v20260520-ruby3.3.11.tar "$node:/tmp/"
-  ssh "$node" 'sudo ctr -a /run/k3s/containerd/containerd.sock -n k8s.io images rm localhost/fc-github-runner:v20260520-ruby3.3.11 || true'
-  ssh "$node" 'sudo ctr -a /run/k3s/containerd/containerd.sock -n k8s.io images import /tmp/fc-github-runner-v20260520-ruby3.3.11.tar'
+  scp fc-github-runner-v20260525-ruby3.3.11-stepca.tar "$node:/tmp/"
+  ssh "$node" 'sudo ctr -a /run/k3s/containerd/containerd.sock -n k8s.io images rm localhost/fc-github-runner:v20260525-ruby3.3.11-stepca || true'
+  ssh "$node" 'sudo ctr -a /run/k3s/containerd/containerd.sock -n k8s.io images import /tmp/fc-github-runner-v20260525-ruby3.3.11-stepca.tar'
 done
 ```
 

apps/github-runner/github-runner.yaml

@@ -22,7 +22,7 @@
 #   NUGET_PACKAGES, XDG_CACHE_HOME, and RUNNER_TOOL_CACHE are all pointed at
 #   writable mounted paths under /home/runner so actions/setup-dotnet does not
 #   attempt to install into /usr/share/dotnet.
-#   Ruby 3.3.11 is baked into localhost/fc-github-runner:v20260520-ruby3.3.11
+#   Ruby 3.3.11 is baked into localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
 #   under /opt/runner-toolcache; setup-runner-home copies it into
 #   /home/runner/_tool because the runner-home emptyDir masks image content
 #   under /home/runner at runtime.
@@ -157,7 +157,7 @@ spec:
       # honors the deeper mount.
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -178,7 +178,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             # GitHub org/repo targeting.
@@ -334,7 +334,7 @@ spec:
       # rather than re-applied per repo as flipped lanes land.
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -355,7 +355,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -472,7 +472,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -493,7 +493,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -604,7 +604,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -625,7 +625,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -736,7 +736,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -757,7 +757,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -868,7 +868,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -889,7 +889,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1003,7 +1003,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1024,7 +1024,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1135,7 +1135,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1156,7 +1156,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1267,7 +1267,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1288,7 +1288,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1399,7 +1399,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1420,7 +1420,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1533,7 +1533,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1554,7 +1554,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1667,7 +1667,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1688,7 +1688,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1726,13 +1726,17 @@ spec:
                   key: credential
             - name: RUN_AS_ROOT
               value: "false"
+          # Bumped 2026-05-25: previous 4Gi limit caused OOMKill (exit 137)
+          # mid-`dotnet test` on TtsReader's 1000+ test suite. PR #21 CI flapped
+          # twice with "runner lost communication" before the K8s side
+          # symptoms surfaced. 8Gi gives ~30% headroom over peak observed.
           resources:
             requests:
               cpu: "500m"
-              memory: "1Gi"
+              memory: "2Gi"
             limits:
               cpu: "2000m"
-              memory: "4Gi"
+              memory: "8Gi"
           volumeMounts:
             - name: runner-home
               mountPath: /home/runner
@@ -1802,7 +1806,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1823,7 +1827,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -1936,7 +1940,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -1957,7 +1961,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -2070,7 +2074,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -2091,7 +2095,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -2204,7 +2208,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -2225,7 +2229,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -2337,7 +2341,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -2358,7 +2362,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -2471,7 +2475,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -2492,7 +2496,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -2604,7 +2608,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -2625,7 +2629,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -2737,7 +2741,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -2758,7 +2762,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -2870,7 +2874,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -2891,7 +2895,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3003,7 +3007,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -3024,7 +3028,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3136,7 +3140,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -3157,7 +3161,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3270,7 +3274,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -3291,7 +3295,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3404,7 +3408,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -3425,7 +3429,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3538,7 +3542,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -3559,7 +3563,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3672,7 +3676,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -3693,7 +3697,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3806,7 +3810,7 @@ spec:
         fsGroup: 1001
       initContainers:
         - name: setup-runner-home
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           command:
             - sh
@@ -3827,7 +3831,7 @@ spec:
               mountPath: /home/runner
       containers:
         - name: runner
-          image: localhost/fc-github-runner:v20260520-ruby3.3.11
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
           imagePullPolicy: Never
           env:
             - name: REPO_URL
@@ -3897,9 +3901,277 @@ spec:
         - name: tmp
           emptyDir: {}
       restartPolicy: Always
+---
+# Runner for FlowerCore.PiManager. Two replicas use per-pod emptyDir caches, so
+# backlog can drain without sharing a ReadWriteOnce PVC. Added 2026-05-25 to
+# close the runner-fleet gap that left run 26417714843 queued for 5h.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: github-runner-pimanager
+  namespace: github-runner
+  labels:
+    app.kubernetes.io/name: github-runner-pimanager
+    app.kubernetes.io/component: runner
+    app.kubernetes.io/part-of: flowercore
+    app.kubernetes.io/managed-by: argocd
+    flowercore.io/created-by: argocd
+    flowercore.io/runner-repo: pimanager
+    flowercore.io/github-repo: FlowerCore.PiManager
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: github-runner-pimanager
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: github-runner-pimanager
+        app.kubernetes.io/component: runner
+        app.kubernetes.io/part-of: flowercore
+        flowercore.io/created-by: argocd
+        flowercore.io/runner-repo: pimanager
+        flowercore.io/github-repo: FlowerCore.PiManager
+    spec:
+      serviceAccountName: github-runner
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1001
+        runAsGroup: 1001
+        fsGroup: 1001
+      initContainers:
+        - name: setup-runner-home
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
+          imagePullPolicy: Never
+          command:
+            - sh
+            - -c
+            - |
+              set -e
+              mkdir -p /home/runner/.dotnet /home/runner/.nuget/packages /home/runner/.nuget/NuGet /home/runner/.cache /home/runner/_tool
+              if [ -d /opt/runner-toolcache/Ruby ] && [ ! -d /home/runner/_tool/Ruby ]; then
+                cp -a /opt/runner-toolcache/Ruby /home/runner/_tool/
+              fi
+              chown -R 1001:1001 /home/runner/.dotnet /home/runner/.nuget /home/runner/.cache /home/runner/_tool
+              chmod -R 755 /home/runner/.dotnet /home/runner/.nuget /home/runner/.cache /home/runner/_tool
+          securityContext:
+            runAsUser: 0
+            runAsNonRoot: false
+          volumeMounts:
+            - name: runner-home
+              mountPath: /home/runner
+      containers:
+        - name: runner
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
+          imagePullPolicy: Never
+          env:
+            - name: REPO_URL
+              value: "https://github.com/astoltz/FlowerCore.PiManager"
+            - name: RUNNER_NAME_PREFIX
+              value: "rke2-linux-pimanager"
+            - name: RUNNER_WORKDIR
+              value: "/tmp/runner/work"
+            - name: EPHEMERAL
+              value: "true"
+            - name: LABELS
+              value: "self-hosted,linux,fc-build-linux"
+            - name: HOME
+              value: "/home/runner"
+            - name: DOTNET_INSTALL_DIR
+              value: "/home/runner/.dotnet"
+            - name: DOTNET_CLI_TELEMETRY_OPTOUT
+              value: "1"
+            - name: DOTNET_NOLOGO
+              value: "1"
+            - name: DOTNET_GENERATE_ASPNET_CERTIFICATE
+              value: "false"
+            - name: DOTNET_CLI_HOME
+              value: "/home/runner"
+            - name: NUGET_PACKAGES
+              value: "/home/runner/.nuget/packages"
+            - name: XDG_CACHE_HOME
+              value: "/home/runner/.cache"
+            - name: RUNNER_TOOL_CACHE
+              value: "/home/runner/_tool"
+            - name: ACCESS_TOKEN
+              valueFrom:
+                secretKeyRef:
+                  name: github-runner-token
+                  key: credential
+            - name: RUN_AS_ROOT
+              value: "false"
+          resources:
+            requests:
+              cpu: "500m"
+              memory: "1Gi"
+            limits:
+              cpu: "2000m"
+              memory: "4Gi"
+          volumeMounts:
+            - name: runner-home
+              mountPath: /home/runner
+            - name: nuget-cache
+              mountPath: /home/runner/.nuget/packages
+            - name: tmp
+              mountPath: /tmp
+          livenessProbe:
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - "pgrep -f Runner.Listener > /dev/null"
+            initialDelaySeconds: 30
+            periodSeconds: 30
+            failureThreshold: 3
+      volumes:
+        - name: runner-home
+          emptyDir: {}
+        - name: nuget-cache
+          emptyDir:
+            sizeLimit: 2Gi
+        - name: tmp
+          emptyDir: {}
+      restartPolicy: Always
+---
+# Runner for FlowerCore.Updater. Two replicas use per-pod emptyDir caches, so
+# backlog can drain without sharing a ReadWriteOnce PVC. Added 2026-05-26 to
+# close the runner-fleet gap that left the repo with only the offline
+# windows-sandbox runner and no Linux PR-CI capacity for future workflows.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: github-runner-updater
+  namespace: github-runner
+  labels:
+    app.kubernetes.io/name: github-runner-updater
+    app.kubernetes.io/component: runner
+    app.kubernetes.io/part-of: flowercore
+    app.kubernetes.io/managed-by: argocd
+    flowercore.io/created-by: argocd
+    flowercore.io/runner-repo: updater
+    flowercore.io/github-repo: FlowerCore.Updater
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: github-runner-updater
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/name: github-runner-updater
+        app.kubernetes.io/component: runner
+        app.kubernetes.io/part-of: flowercore
+        flowercore.io/created-by: argocd
+        flowercore.io/runner-repo: updater
+        flowercore.io/github-repo: FlowerCore.Updater
+    spec:
+      serviceAccountName: github-runner
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1001
+        runAsGroup: 1001
+        fsGroup: 1001
+      initContainers:
+        - name: setup-runner-home
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
+          imagePullPolicy: Never
+          command:
+            - sh
+            - -c
+            - |
+              set -e
+              mkdir -p /home/runner/.dotnet /home/runner/.nuget/packages /home/runner/.nuget/NuGet /home/runner/.cache /home/runner/_tool
+              if [ -d /opt/runner-toolcache/Ruby ] && [ ! -d /home/runner/_tool/Ruby ]; then
+                cp -a /opt/runner-toolcache/Ruby /home/runner/_tool/
+              fi
+              chown -R 1001:1001 /home/runner/.dotnet /home/runner/.nuget /home/runner/.cache /home/runner/_tool
+              chmod -R 755 /home/runner/.dotnet /home/runner/.nuget /home/runner/.cache /home/runner/_tool
+          securityContext:
+            runAsUser: 0
+            runAsNonRoot: false
+          volumeMounts:
+            - name: runner-home
+              mountPath: /home/runner
+      containers:
+        - name: runner
+          image: localhost/fc-github-runner:v20260525-ruby3.3.11-stepca
+          imagePullPolicy: Never
+          env:
+            - name: REPO_URL
+              value: "https://github.com/astoltz/FlowerCore.Updater"
+            - name: RUNNER_NAME_PREFIX
+              value: "rke2-linux-updater"
+            - name: RUNNER_WORKDIR
+              value: "/tmp/runner/work"
+            - name: EPHEMERAL
+              value: "true"
+            - name: LABELS
+              value: "self-hosted,linux,fc-build-linux"
+            - name: HOME
+              value: "/home/runner"
+            - name: DOTNET_INSTALL_DIR
+              value: "/home/runner/.dotnet"
+            - name: DOTNET_CLI_TELEMETRY_OPTOUT
+              value: "1"
+            - name: DOTNET_NOLOGO
+              value: "1"
+            - name: DOTNET_GENERATE_ASPNET_CERTIFICATE
+              value: "false"
+            - name: DOTNET_CLI_HOME
+              value: "/home/runner"
+            - name: NUGET_PACKAGES
+              value: "/home/runner/.nuget/packages"
+            - name: XDG_CACHE_HOME
+              value: "/home/runner/.cache"
+            - name: RUNNER_TOOL_CACHE
+              value: "/home/runner/_tool"
+            - name: ACCESS_TOKEN
+              valueFrom:
+                secretKeyRef:
+                  name: github-runner-token
+                  key: credential
+            - name: RUN_AS_ROOT
+              value: "false"
+          resources:
+            requests:
+              cpu: "500m"
+              memory: "1Gi"
+            limits:
+              cpu: "2000m"
+              memory: "4Gi"
+          volumeMounts:
+            - name: runner-home
+              mountPath: /home/runner
+            - name: nuget-cache
+              mountPath: /home/runner/.nuget/packages
+            - name: tmp
+              mountPath: /tmp
+          livenessProbe:
+            exec:
+              command:
+                - /bin/sh
+                - -c
+                - "pgrep -f Runner.Listener > /dev/null"
+            initialDelaySeconds: 30
+            periodSeconds: 30
+            failureThreshold: 3
+      volumes:
+        - name: runner-home
+          emptyDir: {}
+        - name: nuget-cache
+          emptyDir:
+            sizeLimit: 2Gi
+        - name: tmp
+          emptyDir: {}
+      restartPolicy: Always
 
 # Long-tail runner pattern:
 #
 # Sprint 32 added the final 16 long-tail repo-scoped Deployments above. Keep
 # Common as the only PVC-backed runner at replicas: 1. Any future multi-replica
 # runner must use per-pod emptyDir caches, not a shared ReadWriteOnce PVC.
+# 2026-05-25: PiManager added (was missed in the Sprint 32 long-tail sweep).

apps/github-runner/step-ca-root.crt

@@ -0,0 +1,12 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

apps/selenium/network-policy.yaml

@@ -24,7 +24,16 @@
 #     (10.0.57.16:5200), public internet 80/443 (excluding RFC1918), and
 #     fc-signage:5190 for the signage AAT lane.
 #   - Ingress: Traefik (4444 + 8089 ACME-solver-style), intra-pod,
-#     telephony / gitea / fc-system / fc-signage namespaces on 4444.
+#     telephony / gitea / fc-system / fc-signage / github-runner namespaces
+#     on 4444.
+#
+# 2026-05-25: added github-runner ingress on 4444 so CI jobs running in
+# self-hosted runner pods (e.g. FlowerCore.Print.Web `help-screenshots`)
+# can reach the grid. Without this allow, the session POST to
+# `selenium-hub.selenium.svc.cluster.local:4444` was DNAT'd to the hub
+# pod IP and then dropped at the Calico ingress hook — Selenium UI showed
+# 0/4 sessions while the .NET HTTP client timed out at 60s. Same family
+# as `feedback_netpol_dnat_backend_port`, wrong-source-namespace flavor.
 apiVersion: networking.k8s.io/v1
 kind: NetworkPolicy
 metadata:
@@ -203,6 +212,13 @@ spec:
     ports:
     - port: 4444
       protocol: TCP
+  - from:
+    - namespaceSelector:
+        matchLabels:
+          kubernetes.io/metadata.name: github-runner
+    ports:
+    - port: 4444
+      protocol: TCP
   podSelector: {}
   policyTypes:
   - Ingress

apps/selenium/selenium-grid.yaml

@@ -132,13 +132,18 @@ spec:
           initialDelaySeconds: 10
           periodSeconds: 5
           timeoutSeconds: 5
+        # Hub baseline working set ~766Mi on 2026-05-25 (75% of prior 1Gi
+        # limit). Bump to 1.5Gi / 1Gi to keep ~50% headroom; matches the
+        # stampede-buffer pattern documented for multus
+        # (feedback_k8s_cni_multus_sizing). CPU left alone — observed 54m
+        # against a 500m limit, no contention.
         resources:
           limits:
             cpu: 500m
-            memory: 1Gi
+            memory: 1536Mi
           requests:
             cpu: 250m
-            memory: 512Mi
+            memory: 1Gi
 ---
 apiVersion: apps/v1
 kind: Deployment
@@ -198,13 +203,18 @@ spec:
             port: 5555
           initialDelaySeconds: 15
           periodSeconds: 5
+        # Chromium-based browser node. Bumped from 1Gi -> 2Gi (req 512Mi
+        # -> 1Gi) on 2026-05-25 — Edge had 51 OOMKills in 5d on the
+        # original 1Gi cap (~1 OOM every 2.4h), and Chrome at maxSessions=2
+        # was running 684Mi idle on the same cap. Matches the Firefox node's
+        # tested-stable 2Gi limit. CPU unchanged.
         resources:
           limits:
             cpu: '1'
-            memory: 1Gi
+            memory: 2Gi
           requests:
             cpu: 500m
-            memory: 512Mi
+            memory: 1Gi
         volumeMounts:
         - mountPath: /dev/shm
           name: dshm
@@ -378,13 +388,18 @@ spec:
             port: 5555
           initialDelaySeconds: 15
           periodSeconds: 5
+        # Chromium-based browser node. Bumped from 1Gi -> 2Gi (req 512Mi
+        # -> 1Gi) on 2026-05-25 — Edge had 51 OOMKills in 5d on the
+        # original 1Gi cap (~1 OOM every 2.4h), and Chrome at maxSessions=2
+        # was running 684Mi idle on the same cap. Matches the Firefox node's
+        # tested-stable 2Gi limit. CPU unchanged.
         resources:
           limits:
             cpu: '1'
-            memory: 1Gi
+            memory: 2Gi
           requests:
             cpu: 500m
-            memory: 512Mi
+            memory: 1Gi
         volumeMounts:
         - mountPath: /dev/shm
           name: dshm

tests/bluejay-infra-lint/FleetManifestLintTests.cs

@@ -67,6 +67,7 @@ public sealed class FleetManifestLintTests
         ["github-runner-chat"] = "https://github.com/astoltz/FlowerCore.Chat",
         ["github-runner-mysql"] = "https://github.com/astoltz/FlowerCore.MySQL",
         ["github-runner-kiosk-linux"] = "https://github.com/astoltz/FlowerCore.Kiosk.Linux",
+        ["github-runner-updater"] = "https://github.com/astoltz/FlowerCore.Updater",
     };
 
     private static readonly HashSet<string> ScaledLinuxRunnerDeployments = new(StringComparer.Ordinal)
@@ -80,6 +81,7 @@ public sealed class FleetManifestLintTests
         "github-runner-chat",
         "github-runner-mysql",
         "github-runner-kiosk-linux",
+        "github-runner-updater",
     };
 
     private static readonly IReadOnlyDictionary<string, string> WritableRunnerEnv = new Dictionary<string, string>(StringComparer.Ordinal)
@@ -234,7 +236,7 @@ public sealed class FleetManifestLintTests
         {
             deployments.Should().ContainKey(expectedRunner.Key);
 
-            var container = deployments[expectedRunner.Key].ContainerMappings().Should().ContainSingle().Subject;
+            var container = deployments[expectedRunner.Key].MainContainerMappings().Should().ContainSingle().Subject;
             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 +252,7 @@ public sealed class FleetManifestLintTests
     {
         foreach (var deployment in GitHubRunnerDeployments().Values)
         {
-            var container = deployment.ContainerMappings().Should().ContainSingle().Subject;
+            var container = deployment.MainContainerMappings().Should().ContainSingle().Subject;
 
             foreach (var expectedEnv in WritableRunnerEnv)
             {
@@ -277,7 +279,10 @@ public sealed class FleetManifestLintTests
         foreach (var deploymentName in ScaledLinuxRunnerDeployments)
         {
             var deployment = deployments[deploymentName];
-            ReplicaCount(deployment).Should().Be(2);
+            // Scaled runners must have >= 2 replicas (avoid single-pod bottleneck).
+            // Individual deployments may be tuned upward per CI activity — see
+            // "runners: right-size replica counts per 14d CI activity (#24)".
+            ReplicaCount(deployment).Should().BeGreaterOrEqualTo(2, $"{deploymentName} is in the scaled set and must run with at least 2 replicas");
 
             var volumes = deployment.MappingSequence("spec", "template", "spec", "volumes");
             var claimNames = volumes
@@ -303,6 +308,108 @@ public sealed class FleetManifestLintTests
             .Be("github-runner-nuget-cache");
     }
 
+    [Fact]
+    public void Runners_MustNotPinToOperatorWorkstationHosts()
+    {
+        // CRITICAL SAFETY (operator directive 2026-05-26): BLUEJAY-WS is the
+        // operator's primary workstation — host of the 1Password Connect
+        // bearer token, fcadmin SSH keys to noc1, signing CA private keys,
+        // and source for every FC repo. A self-hosted GitHub Actions runner
+        // there would execute arbitrary PR code with that local access.
+        // Build-side analog of the Sprint 9 NEW safe-account exclusion gate
+        // (Puppet GPO/AppLocker/WDAC/audit-forwarder modules refuse to apply
+        // on BLUEJAY-WS). This lint asserts no GitHub-runner Deployment in
+        // apps/github-runner/ pins to a forbidden operator-workstation host
+        // via nodeName, nodeSelector, nodeAffinity, or tolerations.
+        // Existing legacy `bluejay-ws-sandbox-1` GitHub-registered runner is
+        // out of scope here (it's a runtime registration, not a K8s
+        // Deployment) — see CLAUDE.md "Common Mistakes" entry and
+        // feedback_bluejay_ws_never_public_runner.md.
+        var forbiddenHostPatterns = new[]
+        {
+            "bluejay-ws",
+            "BLUEJAY-WS",
+            "bluejay-ws.iamworkin.lan",
+            "iamworkin-ws",
+        };
+
+        bool ContainsForbidden(string? value) =>
+            !string.IsNullOrWhiteSpace(value)
+            && forbiddenHostPatterns.Any(pattern => value!.Contains(pattern, StringComparison.OrdinalIgnoreCase));
+
+        var violations = GitHubRunnerDeployments().Values.SelectMany(deployment =>
+        {
+            var local = new List<string>();
+            var podSpec = ManifestNodeExtensions.Mapping(deployment.Root, "spec", "template", "spec");
+            if (podSpec is null)
+            {
+                return local;
+            }
+
+            // nodeName: pins the pod to a specific node by name.
+            var nodeName = ManifestNodeExtensions.Scalar(podSpec, "nodeName");
+            if (ContainsForbidden(nodeName))
+            {
+                local.Add($"{deployment.Name} sets nodeName='{nodeName}' which targets a forbidden operator-workstation host.");
+            }
+
+            // nodeSelector: dict of label → value pinning the pod to nodes
+            // carrying matching labels. Examples that would trip this:
+            //   kubernetes.io/hostname: bluejay-ws
+            //   flowercore.io/host: bluejay-ws.iamworkin.lan
+            var nodeSelector = ManifestNodeExtensions.Mapping(podSpec, "nodeSelector");
+            if (nodeSelector is not null)
+            {
+                foreach (var entry in nodeSelector.Children)
+                {
+                    var key = entry.Key is YamlScalarNode keyScalar ? keyScalar.Value : null;
+                    var value = entry.Value is YamlScalarNode valueScalar ? valueScalar.Value : null;
+                    if (ContainsForbidden(value))
+                    {
+                        local.Add($"{deployment.Name} has nodeSelector entry '{key}: {value}' which targets a forbidden operator-workstation host.");
+                    }
+                }
+            }
+
+            // nodeAffinity: matchExpressions over node labels.
+            foreach (var term in ManifestNodeExtensions.MappingSequence(podSpec, "affinity", "nodeAffinity", "requiredDuringSchedulingIgnoredDuringExecution", "nodeSelectorTerms"))
+            {
+                foreach (var expr in ManifestNodeExtensions.MappingSequence(term, "matchExpressions"))
+                {
+                    var key = ManifestNodeExtensions.Scalar(expr, "key");
+                    foreach (var valueNode in ManifestNodeExtensions.ScalarSequence(expr, "values"))
+                    {
+                        if (ContainsForbidden(valueNode))
+                        {
+                            local.Add($"{deployment.Name} has nodeAffinity matchExpression '{key}' value '{valueNode}' which targets a forbidden operator-workstation host.");
+                        }
+                    }
+                }
+            }
+
+            // tolerations: scheduling onto a tainted operator-workstation
+            // node would let the runner run there. Forbid any toleration
+            // value that names the workstation.
+            foreach (var toleration in ManifestNodeExtensions.MappingSequence(podSpec, "tolerations"))
+            {
+                var key = ManifestNodeExtensions.Scalar(toleration, "key");
+                var value = ManifestNodeExtensions.Scalar(toleration, "value");
+                if (ContainsForbidden(key))
+                {
+                    local.Add($"{deployment.Name} has toleration key '{key}' which targets a forbidden operator-workstation host.");
+                }
+                if (ContainsForbidden(value))
+                {
+                    local.Add($"{deployment.Name} has toleration value '{value}' which targets a forbidden operator-workstation host.");
+                }
+            }
+
+            return local;
+        }).ToList();
+
+        violations.Should().BeEmpty("BLUEJAY-WS / iamworkin-ws must never host a fleet GitHub Actions runner; see CLAUDE.md 'Registering BLUEJAY-WS as a fleet GitHub Actions runner' and feedback_bluejay_ws_never_public_runner.md");
+    }
+
     [Fact]
     public void Monitoring_MustAlertWhenLinuxRunnerDeploymentIsUnavailable()
     {
@@ -890,6 +997,22 @@ internal sealed record ManifestDocument(
             .ToList();
     }
 
+    // MainContainerMappings excludes initContainers. Use this when asserting
+    // properties of the primary container (env, image, volumeMounts) where an
+    // initContainer would be a false-positive match — e.g. the GitHub runner
+    // image's `setup-runner-home` initContainer should not count toward the
+    // single-container assertions on the runner deployments.
+    public IReadOnlyList<YamlMappingNode> MainContainerMappings()
+    {
+        var podSpec = PodSpec();
+        if (podSpec is null)
+        {
+            return Array.Empty<YamlMappingNode>();
+        }
+
+        return ManifestNodeExtensions.MappingSequence(podSpec, "containers").ToList();
+    }
+
     public IReadOnlyList<ContainerSpec> ContainerSpecs()
     {
         return ContainerMappings()