Initial scaffold: generation-rule-only Crossplane Bucket example

Educational RunWhen CodeCollection that discovers Crossplane GCP
Bucket CRDs (storage.gcp.upbound.io/v1beta1) and generates one SLX
per bucket. Ships only generation rules and Jinja templates; the
runtime lives in rw-generic-codecollection/k8s-kubectl-cmd (already
loaded by the airgap runner).

Includes:
- codebundles/gcp-bucket-crossplane-health with generation rule + 3 templates
- docs/01..07 numbered training chapters with screenshot placeholders
- README, .gitignore

Co-authored-by: Cursor <cursoragent@cursor.com>

codebundles/gcp-bucket-crossplane-health/.runwhen/templates/gcp-bucket-crossplane-health-slx.yaml

@@ -0,0 +1,36 @@
+apiVersion: runwhen.com/v1
+kind: ServiceLevelX
+metadata:
+  name: {{slx_name}}
+  labels:
+    {% include "common-labels.yaml" %}
+  annotations:
+    {% include "common-annotations.yaml" %}
+spec:
+  imageURL: https://storage.googleapis.com/runwhen-nonprod-shared-images/icons/kubernetes.svg
+  alias: Crossplane GCP Bucket {{match_resource.resource.metadata.name}} Health
+  asMeasuredBy: Fraction of Crossplane .status.conditions[] that are True (Ready + Synced).
+  configProvided:
+  - name: OBJECT_NAME
+    value: {{match_resource.resource.metadata.name}}
+  - name: API_GROUP
+    value: storage.gcp.upbound.io
+  - name: KIND
+    value: Bucket
+  owners:
+  - {{workspace.owner_email}}
+  statement: >-
+    Crossplane GCP Bucket {{match_resource.resource.metadata.name}} should have
+    every status condition (Ready, Synced) in state True 99.5% of the time.
+  additionalContext:
+    {% include "kubernetes-hierarchy.yaml" ignore missing %}
+    qualified_name: "{{ match_resource.qualified_name }}"
+  tags:
+    {% include "kubernetes-tags.yaml" ignore missing %}
+
+    - name: access
+      value: read-only
+    - name: managed-by
+      value: crossplane
+    - name: provider
+      value: upbound-gcp