Update copilot-instructions.md

Author: clarkd

.github/copilot-instructions.md

@@ -34,6 +34,7 @@ When suggesting changes:
 ### Metadata (metadata.json)
 * displayName - Use the correctly styled/cased official product name for display names, e.g. SharePoint NOT sharepoint
 * description - One short sentence describing what users can build or monitor. Avoid API or implementation language like Access HaloPSA APIs and query ticket data.
+* version - The version number MUST be increased for any change to the plugin. It can never decrease. If a breaking change is made, the major version number of the plugin should be increased - for example, when deleting a data stream or significantly modifying the ui parameters.
 
 ### UI Configuration (ui.json)
 - Generally prefer API tokens or OAuth where possible, flag usage of username/password unless the API offers no alternative.