Blocking someone removes notifications between you

Also note in the CI guide that the build caches need disk space where
Docker keeps its data.

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

apps/api/src/routes/safety.ts

@@ -9,6 +9,7 @@ import { db, schema } from '../db';
 import { requireUser } from '../lib/auth';
 import { HttpError } from '../lib/http';
 import { FOLLOWS_CHANGED_CHANNEL, redis } from '../lib/redis';
+import { removeNotificationsBetween } from '../services/notifications';
 import { toUserSummary } from '../services/nowPlaying';
 import { removeReactionsBetween } from './reactions';
 
@@ -48,6 +49,7 @@ export async function safetyRoutes(app: FastifyInstance) {
         );
     });
     await removeReactionsBetween(me.id, them.id);
+    await removeNotificationsBetween(me.id, them.id);
     await followsChanged(me.id, them.id);
     return { ok: true };
   });