Comments on plays

- Anyone who can see a play can read its comments; the player and the people they follow can write.
  The author, the player and admins can delete; comments can be reported (admins see the text).
- Notifications: "commented on" for the player, "replied on" for earlier commenters, each with its
  own setting. Reaction and comment notifications now open the play.
- A 💬 chip with the count next to reactions on the feed and recent plays, opening the thread on
  the app (/play/[id]) and the website. Threads refresh every few seconds while open.
- Blocking removes comments between the two people. Plays with comments survive history trimming.
- Privacy page updated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011Y2iUsKEWDuRGjK5FPmcUP

apps/api/src/routes/safety.ts

@@ -11,6 +11,7 @@ import { HttpError } from '../lib/http';
 import { FOLLOWS_CHANGED_CHANNEL, redis } from '../lib/redis';
 import { removeNotificationsBetween } from '../services/notifications';
 import { toUserSummary } from '../services/nowPlaying';
+import { removeCommentsBetween } from './comments';
 import { removeReactionsBetween } from './reactions';
 
 async function findUser(username: string) {
@@ -49,6 +50,7 @@ export async function safetyRoutes(app: FastifyInstance) {
         );
     });
     await removeReactionsBetween(me.id, them.id);
+    await removeCommentsBetween(me.id, them.id);
     await removeNotificationsBetween(me.id, them.id);
     await followsChanged(me.id, them.id);
     return { ok: true };