Add PULL_REQUEST_TEMPLATE.md guidance to create_pull_request tool description

Co-authored-by: digitarald <[email protected]>

Author: Copilot

pkg/github/__toolsnaps__/create_pull_request.snap

@@ -3,7 +3,7 @@
     "title": "Open new pull request",
     "readOnlyHint": false
   },
-  "description": "Create a new pull request in a GitHub repository.",
+  "description": "Create a new pull request in a GitHub repository. If there is a PULL_REQUEST_TEMPLATE.md file in the repository, consider using it as a reference for the pull request description to follow repository conventions.",
   "inputSchema": {
     "properties": {
       "base": {

pkg/github/pullrequests.go

@@ -86,7 +86,7 @@ func GetPullRequest(getClient GetClientFn, t translations.TranslationHelperFunc)
 // CreatePullRequest creates a tool to create a new pull request.
 func CreatePullRequest(getClient GetClientFn, t translations.TranslationHelperFunc) (mcp.Tool, server.ToolHandlerFunc) {
 	return mcp.NewTool("create_pull_request",
-			mcp.WithDescription(t("TOOL_CREATE_PULL_REQUEST_DESCRIPTION", "Create a new pull request in a GitHub repository.")),
+			mcp.WithDescription(t("TOOL_CREATE_PULL_REQUEST_DESCRIPTION", "Create a new pull request in a GitHub repository. If there is a PULL_REQUEST_TEMPLATE.md file in the repository, consider using it as a reference for the pull request description to follow repository conventions.")),
 			mcp.WithToolAnnotation(mcp.ToolAnnotation{
 				Title:        t("TOOL_CREATE_PULL_REQUEST_USER_TITLE", "Open new pull request"),
 				ReadOnlyHint: ToBoolPtr(false),