Group reaction tools with granular registrations

Keep standalone reaction tool registrations next to the granular issue and pull request tools they belong with, so the default compound tool sections stay focused.

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

Author: SamMorrowDrums

pkg/github/tools.go

@@ -215,8 +215,6 @@ func AllTools(t translations.TranslationHelperFunc) []inventory.ServerTool {
 		ListIssueFields(t),
 		IssueWrite(t),
 		AddIssueComment(t),
-		AddIssueReaction(t),
-		AddIssueCommentReaction(t),
 		SubIssueWrite(t),
 
 		// User tools
@@ -236,7 +234,6 @@ func AllTools(t translations.TranslationHelperFunc) []inventory.ServerTool {
 		PullRequestReviewWrite(t),
 		AddCommentToPendingReview(t),
 		AddReplyToPullRequestComment(t),
-		AddPullRequestReviewCommentReaction(t),
 
 		// Copilot tools
 		AssignCopilotToIssue(t),
@@ -317,6 +314,8 @@ func AllTools(t translations.TranslationHelperFunc) []inventory.ServerTool {
 		GranularRemoveSubIssue(t),
 		GranularReprioritizeSubIssue(t),
 		GranularSetIssueFields(t),
+		AddIssueReaction(t),
+		AddIssueCommentReaction(t),
 
 		// Granular pull request tools (feature-flagged, replace consolidated update_pull_request/pull_request_review_write)
 		GranularUpdatePullRequestTitle(t),
@@ -330,6 +329,7 @@ func AllTools(t translations.TranslationHelperFunc) []inventory.ServerTool {
 		GranularAddPullRequestReviewComment(t),
 		GranularResolveReviewThread(t),
 		GranularUnresolveReviewThread(t),
+		AddPullRequestReviewCommentReaction(t),
 	})
 }