Add the new pattern in the README

Author: amburi

README.md

@@ -97,6 +97,7 @@ Our mission
 * [Walk the InnerSource talk](/patterns/1-initial/walk-the-innersource-talk.md) - *Teams across the organization are encouraged to adopt InnerSource principles such as working openly, sharing code, and collaborating transparently. But, if the team behind the InnerSource initiative doesn’t follow these practices themselves, it undermines credibility and adoption. Therefore, this team should lead by example: documenting their decisions as code, working in the open, and treating their work as an InnerSource project to build trust and show others how it’s done.*
 * [Require InnerSource before Open Source](/patterns/1-initial/innersource-before-open-source.md) - *Maintaining and managing open source projects can be challenging for organizations, due to a lack of internal infrastructure and people with the knowledge of the required collaboration practices. By requiring projects to be InnerSource before becoming open source, teams have time to establish the necessary internal support, governance, and collaboration skills needed for successful community engagement.*
 * [AI Code Generation Context](patterns/1-initial/ai-code-generation-context.md) - *AI tools generate code that diverges from project standards and architectural patterns. Provide an AI Code Generation Context within the repositories to guide AI tools in producing contributions that align with existing project conventions, reducing review friction and maintaining code consistency.*
+* [Centralised InnerSource Repository Governance](patterns/1-initial/centralised-repository-governance.md) - *InnerSource repositories lose contributor readiness when project hygiene drifts across teams. A central governance repository defines readiness checks as policy-as-code and runs automated audits that help Trusted Committers and repository maintainers keep projects discoverable, understandable, and contribution-ready without removing local ownership.*
 * [InnerSource as a Career Booster](patterns/1-initial/innersource-as-career-booster.md) - *Many employees wonder how contributing to InnerSource projects benefits their careers beyond their immediate team objectives. By engaging in InnerSource, individuals expand their skills, grow their network, increase visibility across the organization, and unlock new career opportunities.*
 * [Migrating from InnerSource to Open Source](patterns/1-initial/migrating-from-innersource-to-open-source.md) - *When an InnerSource project succeeds internally and meets criteria for external release, organizations often lack a structured approach for the transition. Establish a process that addresses legal, security, governance, and community readiness to transition the project to open source while maintaining its internal value.*