Add about panubo section to README.md

Author: trnubo

README.md

@@ -15,6 +15,12 @@ email access.
 
 This image is available on quay.io `quay.io/panubo/postfix` and AWS ECR Public `public.ecr.aws/panubo/postfix`.
 
+<!-- BEGIN_TOP_PANUBO -->
+> [!IMPORTANT]
+> **Maintained by Panubo** — Cloud Native & SRE Consultants in Sydney.
+> [Work with us →](https://panubo.com.au)
+<!-- END_TOP_PANUBO -->
+
 ## Table of Contents
 
 - [Environment Variables](#environment-variables)
@@ -217,3 +223,20 @@ Images are available on:
 ## Status
 
 Production ready and stable.
+
+<!-- BEGIN_BOTTOM_PANUBO -->
+> [!IMPORTANT]
+> ## About Panubo
+>
+> This project is maintained by Panubo, a technology consultancy based in Sydney, Australia. We build reliable, scalable systems and help teams master the cloud-native ecosystem.
+>
+> We are available for hire to help with:
+>
+> * SRE & Operations: Improving system reliability and incident response.
+> * Platform Engineering: Building internal developer platforms that scale.
+> * Kubernetes: Cluster design, security auditing, and migrations.
+> * DevOps: Streamlining CI/CD pipelines and developer experience.
+> * [See our other services](https://panubo.com.au/services)
+>
+> Need a hand with your infrastructure? [Let’s have a chat](https://panubo.com.au/contact) or email us at team@panubo.com.
+<!-- END_BOTTOM_PANUBO -->