Initial import: phase docs, configs, Claude conventions

Phase 1-3 runbooks and design notes, version pins, config templates,
project-history conventions, cluster-inspector read-only credentials setup.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

configs/test/inflate.yaml

@@ -0,0 +1,18 @@
+# apply to the workload cluster; scale replicas to trigger scale-up (≈2 pods per 4 vCPU / 8 GiB worker)
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: inflate
+spec:
+  replicas: 0
+  selector:
+    matchLabels: { app: inflate }
+  template:
+    metadata:
+      labels: { app: inflate }
+    spec:
+      containers:
+        - name: pause
+          image: registry.k8s.io/pause:3.10
+          resources:
+            requests: { cpu: "1500m", memory: "2Gi" }