feat: conversations on a ticket are settled, and you see who is typing

A top-level comment and its replies can be resolved by whoever can
change the ticket (CommentThreadResolvedEvent), with an optional
conclusion added as a reply marked as a decision, so it shows above the
ticket. A settled conversation folds to one line (topic, who settled it
and the conclusion) and can be unfolded or reopened; the header counts
the open ones, and finishing the ticket with one open asks first.

«Ana está escribiendo…» shows in the conversation being answered, at
once: a `typing` mutation publishes to a Redis channel per ticket
(`typing` subscription), never stored. In replies, Enter sends and
Shift+Enter breaks the line, except inside lists and code.

API: resolveThread / PUT-DELETE /api/comments/{id}/resolution, Comment
.resolved/resolvedBy/resolvedAt, typing mutation and subscription. MCP:
resolve_thread.

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

libs/api/tracker/infrastructure/src/lib/mongo/find.repositories.ts

@@ -54,6 +54,9 @@ const commentFromDoc = (doc: CommentDoc): CommentReadModel => ({
   decision: doc.decision ?? false,
   decidedBy: doc.decidedBy ?? null,
   decidedAt: doc.decidedAt ?? null,
+  resolved: doc.resolved ?? false,
+  resolvedBy: doc.resolvedBy ?? null,
+  resolvedAt: doc.resolvedAt ?? null,
 });
 
 const escapeRegex = (text: string) =>

libs/api/tracker/infrastructure/src/lib/realtime/redis-change-feed.ts

@@ -7,6 +7,7 @@ import {
   ProjectChange,
   ReleaseChange,
   SprintChange,
+  Typing,
 } from '@task-stream/api/tracker/application';
 import {
   ActivityReadModel,
@@ -18,6 +19,7 @@ import { RedisPubSub } from 'graphql-redis-subscriptions';
 const Channels = {
   issue: (projectId: string) => `tracker.issue.${projectId}`,
   comment: (issueId: string) => `tracker.comment.${issueId}`,
+  typing: (issueId: string) => `tracker.typing.${issueId}`,
   activity: (projectId: string) => `tracker.activity.${projectId}`,
   release: (projectId: string) => `tracker.release.${projectId}`,
   sprint: (projectId: string) => `tracker.sprint.${projectId}`,
@@ -86,6 +88,14 @@ export class RedisChangeFeed extends ChangeFeed {
     return this.pubSub.asyncIterableIterator(Channels.comment(issueId));
   }
 
+  publishTyping(typing: Typing): Promise<void> {
+    return this.pubSub.publish(Channels.typing(typing.issueId), typing);
+  }
+
+  typing(issueId: string): AsyncIterableIterator<Typing> {
+    return this.pubSub.asyncIterableIterator(Channels.typing(issueId));
+  }
+
   activity(projectId: string): AsyncIterableIterator<ActivityReadModel> {
     return this.pubSub.asyncIterableIterator(Channels.activity(projectId));
   }