docs: rename Extend to Expand throughout customization docs

docs/explanation/named-agents.md

@@ -80,7 +80,7 @@ Concrete example: a team commits a single file telling Amelia to always use the
 For the full customization surface and worked examples, see:
 
 - [How to Customize BMad](../how-to/customize-bmad.md) — the reference for what's customizable and how merge works
-- [How to Extend BMad for Your Organization](../how-to/extend-bmad-for-your-org.md) — four worked recipes spanning agent-wide rules, workflow conventions, external publishing, and template swaps
+- [How to Expand BMad for Your Organization](../how-to/expand-bmad-for-your-org.md) — four worked recipes spanning agent-wide rules, workflow conventions, external publishing, and template swaps
 
 ## The Bigger Idea
 

docs/how-to/customize-bmad.md

@@ -270,7 +270,7 @@ The same field conventions cross the agent/workflow boundary: `activation_steps_
 
 ## Worked Examples
 
-For complete, enterprise-oriented recipes — shaping an agent across every workflow it dispatches, enforcing org conventions, publishing outputs to Confluence and Jira, and swapping in your own output templates — see [How to Extend BMad for Your Organization](./extend-bmad-for-your-org.md).
+For complete, enterprise-oriented recipes — shaping an agent across every workflow it dispatches, enforcing org conventions, publishing outputs to Confluence and Jira, and swapping in your own output templates — see [How to Expand BMad for Your Organization](./expand-bmad-for-your-org.md).
 
 ## Troubleshooting
 

docs/how-to/expand-bmad-for-your-org.md

@@ -1,5 +1,5 @@
 ---
-title: 'How to Extend BMad for Your Organization'
+title: 'How to Expand BMad for Your Organization'
 description: Four customization patterns that reshape BMad without forking — org conventions, agent-wide rules, external publishing, and template swaps
 sidebar:
   order: 9

docs/index.md

@@ -33,7 +33,7 @@ These docs are organized into four sections based on what you're trying to do:
 | **Explanation**   | Understanding-oriented. Deep dives into concepts and architecture. Read when you want to know *why*.       |
 | **Reference**     | Information-oriented. Technical specifications for agents, workflows, and configuration.                   |
 
-## Extend and Customize
+## Expand and Customize
 
 Want to expand BMad with your own agents, workflows, or modules? The **[BMad Builder](https://bmad-builder-docs.bmad-method.org/)** provides the framework and tools for creating custom extensions, whether you're adding new capabilities to BMad or building entirely new modules from scratch.