ops: trim load for degraded 2-node cluster (agent2 PSU dead)

Scale all github-runner deployments to 1 replica and halt the ci1
KubeVirt VM. With agent2 down (failed PSU) the cluster runs on two
passively-cooled NUCs; the ci1 8-vCPU VM drove agent1 to ~100C. Keep
total load trimmed until replacement hardware is in place.

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

apps/github-runner/github-runner.yaml

@@ -306,7 +306,7 @@ spec:
   # UN-PARKED 2026-05-21: Shared.Pos #5 fixed the non-root setup-dotnet path
   # (DOTNET_INSTALL_DIR step-scoped). Sprint 30 Cl-8 capacity Q-CI-52: raised
   # to replicas: 2 to absorb top-8 burst load per substrate-recommended default.
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-sharedpos
@@ -448,7 +448,7 @@ metadata:
     flowercore.io/runner-repo: puppet
     flowercore.io/github-repo: FlowerCore.Puppet
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-puppet
@@ -580,7 +580,7 @@ metadata:
     flowercore.io/runner-repo: signage
     flowercore.io/github-repo: FlowerCore.Signage
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-signage
@@ -712,7 +712,7 @@ metadata:
     flowercore.io/runner-repo: dms
     flowercore.io/github-repo: FlowerCore.DMS
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-dms
@@ -844,7 +844,7 @@ metadata:
     flowercore.io/runner-repo: telephony
     flowercore.io/github-repo: FlowerCore.Telephony
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-telephony
@@ -979,7 +979,7 @@ spec:
   # Sprint 33 morning-routine (2026-05-25): bumped 2 → 3 because help-screenshots
   # AAT job holds a runner 30+ min, causing head-of-line blocking on parallel PRs.
   # 12 runs in trailing 5d.
-  replicas: 3
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-print-web
@@ -1111,7 +1111,7 @@ metadata:
     flowercore.io/runner-repo: chat
     flowercore.io/github-repo: FlowerCore.Chat
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-chat
@@ -1243,7 +1243,7 @@ metadata:
     flowercore.io/runner-repo: mysql
     flowercore.io/github-repo: FlowerCore.MySQL
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-mysql
@@ -1375,7 +1375,7 @@ metadata:
     flowercore.io/runner-repo: kiosk-linux
     flowercore.io/github-repo: FlowerCore.Kiosk.Linux
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-kiosk-linux
@@ -1509,7 +1509,7 @@ metadata:
     flowercore.io/runner-repo: marquee
     flowercore.io/github-repo: FlowerCore.Marquee
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-marquee
@@ -1643,7 +1643,7 @@ metadata:
     flowercore.io/runner-repo: tts-reader
     flowercore.io/github-repo: FlowerCore.TtsReader
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-tts-reader
@@ -2317,7 +2317,7 @@ metadata:
     flowercore.io/runner-repo: remote-desktop
     flowercore.io/github-repo: FlowerCore.RemoteDesktop
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-remote-desktop
@@ -2584,7 +2584,7 @@ metadata:
     flowercore.io/runner-repo: distribution
     flowercore.io/github-repo: FlowerCore.Distribution
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-distribution
@@ -2717,7 +2717,7 @@ metadata:
     flowercore.io/runner-repo: scoreboard
     flowercore.io/github-repo: FlowerCore.Scoreboard
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-scoreboard
@@ -2850,7 +2850,7 @@ metadata:
     flowercore.io/runner-repo: segment-display
     flowercore.io/github-repo: FlowerCore.SegmentDisplay
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-segment-display
@@ -2983,7 +2983,7 @@ metadata:
     flowercore.io/runner-repo: signage-contracts
     flowercore.io/github-repo: FlowerCore.Signage.Contracts
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-signage-contracts
@@ -3116,7 +3116,7 @@ metadata:
     flowercore.io/runner-repo: signal-control
     flowercore.io/github-repo: FlowerCore.SignalControl
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-signal-control
@@ -3919,7 +3919,7 @@ metadata:
     flowercore.io/runner-repo: pimanager
     flowercore.io/github-repo: FlowerCore.PiManager
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-pimanager
@@ -4053,7 +4053,7 @@ metadata:
     flowercore.io/runner-repo: updater
     flowercore.io/github-repo: FlowerCore.Updater
 spec:
-  replicas: 2
+  replicas: 1
   selector:
     matchLabels:
       app.kubernetes.io/name: github-runner-updater