Align reaction tool descriptions with codebase style

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: timrogers

pkg/github/issues_granular.go

@@ -1114,7 +1114,7 @@ func AddIssueReaction(t translations.TranslationHelperFunc) inventory.ServerTool
 		ToolsetMetadataIssues,
 		mcp.Tool{
 			Name:        "add_issue_reaction",
-			Description: t("TOOL_ADD_ISSUE_REACTION_DESCRIPTION", "Add an emoji reaction to a GitHub issue"),
+			Description: t("TOOL_ADD_ISSUE_REACTION_DESCRIPTION", "Add a reaction to an issue."),
 			Annotations: &mcp.ToolAnnotations{
 				Title:           t("TOOL_ADD_ISSUE_REACTION_USER_TITLE", "Add Issue Reaction"),
 				ReadOnlyHint:    false,
@@ -1194,7 +1194,7 @@ func AddIssueCommentReaction(t translations.TranslationHelperFunc) inventory.Ser
 		ToolsetMetadataIssues,
 		mcp.Tool{
 			Name:        "add_issue_comment_reaction",
-			Description: t("TOOL_ADD_ISSUE_COMMENT_REACTION_DESCRIPTION", "Add an emoji reaction to a GitHub issue comment"),
+			Description: t("TOOL_ADD_ISSUE_COMMENT_REACTION_DESCRIPTION", "Add a reaction to an issue comment."),
 			Annotations: &mcp.ToolAnnotations{
 				Title:           t("TOOL_ADD_ISSUE_COMMENT_REACTION_USER_TITLE", "Add Issue Comment Reaction"),
 				ReadOnlyHint:    false,

pkg/github/pullrequests_granular.go

@@ -744,7 +744,7 @@ func AddPullRequestReviewCommentReaction(t translations.TranslationHelperFunc) i
 		ToolsetMetadataPullRequests,
 		mcp.Tool{
 			Name:        "add_pull_request_review_comment_reaction",
-			Description: t("TOOL_ADD_PULL_REQUEST_REVIEW_COMMENT_REACTION_DESCRIPTION", "Add an emoji reaction to a GitHub pull request review comment"),
+			Description: t("TOOL_ADD_PULL_REQUEST_REVIEW_COMMENT_REACTION_DESCRIPTION", "Add a reaction to a pull request review comment."),
 			Annotations: &mcp.ToolAnnotations{
 				Title:           t("TOOL_ADD_PULL_REQUEST_REVIEW_COMMENT_REACTION_USER_TITLE", "Add Pull Request Review Comment Reaction"),
 				ReadOnlyHint:    false,