feat: add pecan release notes

content/4.pecan/5.release-notes/_dir.yml

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+title: Release Notes

content/4.pecan/5.release-notes/release-notes.md

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+---
+title: PeCan Release Notes
+navigation:
+   title: PeCan Release Notes
+---
+
+## February 2026
+
+### New Features
+
+- **Redesigned Navigation** — New left-side navigation panel for easy navigation between data facets and access to the [Diagnosis Search](../../2.cc4k/1.index.md).
+- **Help Guides** - Navigation to our PeCan Help Guide documentation is now accessible on the new left-side navigation panel.
+- **Keyboard Controls** — Updated [keyboard controls](content/4.pecan/4.accessibility/keyboard-shortcuts.md) to quickly access PeCan's Diagnosis Search.
+
+### Improvements
+
+- Updated position of the Diagnosis Search on the PeCan Homepage providing easier access.
+
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------

deployment/preview/pr144/app.yaml

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+apiVersion: helm.toolkit.fluxcd.io/v2beta1
+kind: HelmRelease
+metadata:
+  name: docs
+  namespace: docs-pr144
+spec:
+  interval: 30m
+  chart:
+    spec:
+      chart: generic
+      version: 1.1.x
+      sourceRef:
+        kind: HelmRepository
+        name: stjudecloud
+        namespace: flux-system
+      interval: 1h
+  values:
+    nameOverride: docs
+    extraDeploy:
+      - |
+        apiVersion: v1
+        kind: Service
+        metadata:
+          name: {{ template "common.names.fullname" . }}-oauth-bridge
+          labels: {{- include "common.labels.standard" . | nindent 4 }}
+            {{- if .Values.commonLabels }}
+            {{- include "common.tplvalues.render" ( dict "value" .Values.commonLabels "context" $ ) | nindent 4 }}
+            {{- end }}
+          {{- if .Values.commonAnnotations }}
+          annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
+          {{- end }}
+        spec:
+          type: ExternalName
+          externalName: oauth2-proxy.oauth2-proxy
+      - |
+        ---
+        apiVersion: networking.k8s.io/v1
+        kind: Ingress
+        metadata:
+          name: {{ .Release.Name }}-oauth
+        spec:
+          ingressClassName: nginx
+          rules:
+          - host: {{ .Values.ingress.hostname }}
+            http:
+              paths:
+                - backend:
+                    service:
+                      name: {{ template "common.names.fullname" . }}-oauth-bridge
+                      port:
+                        number: 80
+                  path: /oauth2
+                  pathType: ImplementationSpecific
+          tls:
+          - hosts:
+            - {{ .Values.ingress.hostname }}
+            secretName: {{ .Values.ingress.hostname }}-tls
+    image:
+      repository: stjudecloud/docs
+      tag: pr144-d574fb2-264 # {"$imagepolicy": "flux-system:docs-pr144:tag"}
+    podAnnotations:
+      linkerd.io/inject: enabled
+      config.linkerd.io/proxy-cpu-request: 20m
+    containerPorts:
+      http: 3000
+    service:
+      ports:
+        - name: http
+          protocol: TCP
+          port: 3000
+          targetPort: http
+    ingress:
+      enabled: true
+      hostname: docs-pr144.staging.stjude.cloud
+      path: /
+      annotations:
+        cert-manager.io/cluster-issuer: letsencrypt-prod
+        linkerd.io/inject: ingress
+        nginx.ingress.kubernetes.io/auth-signin: https://$host/oauth2/start?rd=$escaped_request_uri
+        nginx.ingress.kubernetes.io/auth-url: https://$host/oauth2/auth
+        nginx.ingress.kubernetes.io/service-upstream: "true"
+        nginx.ingress.kubernetes.io/enable-modsecurity: "true"
+        nginx.ingress.kubernetes.io/enable-owasp-core-rules: "true"
+      tls:
+        enabled: true
+    datadog:
+      enabled: false