feat: link commits, branches and pull requests to tickets

A project can turn on a webhook for GitHub, Gitea or GitLab. Pushes and
pull or merge requests that name a ticket key show on that ticket under
Desarrollo, with the state of each pull request; the secret is shown and
rotated from the project settings.

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

libs/api/tracker/application/src/lib/event-handlers/activity-summary.ts

@@ -9,6 +9,7 @@ import {
   IssueChecklistItemRemovedEvent,
   IssueChecklistItemUpdatedEvent,
   IssueParentChangedEvent,
+  IssueDevLinkRecordedEvent,
   IssueCreatedEvent,
   IssueLinkedEvent,
   IssueLinkType,
@@ -162,6 +163,19 @@ export function describeEvent(
       ? `${actor} metió ${issueKey} en ${sprint}`
       : `${actor} sacó ${issueKey} de ${sprint}`;
   }
+  if (event instanceof IssueDevLinkRecordedEvent) {
+    const { kind, ref, state, author } = event.link;
+    const who = author ? ` (${author})` : '';
+    if (kind === 'COMMIT') return `Commit ${ref} sobre ${issueKey}${who}`;
+    if (kind === 'BRANCH') return `Rama ${ref} para ${issueKey}${who}`;
+    const verb =
+      state === 'MERGED'
+        ? 'fusionada'
+        : state === 'CLOSED'
+          ? 'cerrada'
+          : 'abierta';
+    return `Pull request ${ref} ${verb} para ${issueKey}${who}`;
+  }
   if (event instanceof IssueParentChangedEvent) {
     return event.parentKey
       ? `${actor} colocó ${issueKey} bajo ${event.parentKey}`