feat: what is new since my last visit, and turning a comment into a ticket

Opening a ticket notes the visit and answers the one before (issue_visits),
so the page marks others' comments and changes since. A comment can become
a ticket of its own, as a subtask or linked; it remembers where it went.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/web/tracker/application/src/lib/events/issue.events.ts

@@ -110,6 +110,12 @@ export const issuePageEvents = eventGroup({
       resolved: boolean;
       conclusion: string | null;
     }>(),
+    commentToIssueRequested: type<{
+      commentId: string;
+      title: string;
+      type: string;
+      asSubtask: boolean;
+    }>(),
     voteRequested: type<{ issueId: string; on: boolean }>(),
     /** An image pasted into a text was uploaded (it joins the ticket's files). */
     imagePasted: type<{ issueId: string }>(),