fix(worldfeed): always compress feed messages so Safari stays connected

WebKit drops a permessage-deflate socket (close 1006) when compressed and
uncompressed messages are mixed. The feed chose per message based on the last
tick's duration, so near the threshold Safari viewers disconnected every few
seconds.

Fixes #72

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

server/engine/src/web/worldfeed.ts

@@ -5,7 +5,6 @@ import Player from '#/engine/entity/Player.js';
 import { NpcStat } from '#/engine/entity/NpcStat.js';
 import { PlayerStat } from '#/engine/entity/PlayerStat.js';
 import World from '#/engine/World.js';
-import { WorldStat } from '#/engine/WorldStat.js';
 import Packet from '#/io/Packet.js';
 import { NpcInfoProt, PlayerInfoProt } from '#/network/rsbuf/prot.js';
 import { Visibility } from '#/network/rsbuf/visibility.js';
@@ -581,12 +580,12 @@ function toInt(value: unknown): number {
     return typeof value === 'number' && Number.isFinite(value) ? Math.trunc(value) : 0;
 }
 
-// Compression costs tick-thread CPU (~7 ms per MB); skip it when the last tick ran long,
-// the same trade the gateway relay makes.
+// Always compress, even though it costs tick-thread CPU (~7 ms per MB). WebKit drops
+// (1006) a permessage-deflate socket that mixes compressed and uncompressed messages,
+// so the choice can't follow tick time the way the gateway relay's does.
 function send(ws: ServerWebSocket<WebSocketData>, msg: FeedRecord | string): void {
-    const compress = World.lastCycleStats[WorldStat.CYCLE] < World.tickRate * 0.75;
     try {
-        ws.send(typeof msg === 'string' ? msg : JSON.stringify(msg), compress);
+        ws.send(typeof msg === 'string' ? msg : JSON.stringify(msg), true);
     } catch {
         subscribers.delete(ws);
     }