feat: remove like event (unreliable via INTERACT_WORD_V2); restore portable build dir

- Drop 'like' event from rules, handler and web UI (Bilibili like messages
  are not reliably delivered as INTERACT_WORD_V2 msg_type=6)
- Keep enter_room / follow / interact_other
- event_rules.json rewritten without like key
- build.py keeps BUILD_DIR = dist/portable

static/index.html

@@ -571,7 +571,7 @@ async function checkExistingLogin() {
 
 const RULE_LABELS = {
   danmaku: '弹幕', gift: '礼物', blind_box: '盲盒礼物',
-  enter_room: '进入房间', follow: '关注', like: '点赞',
+  enter_room: '进入房间', follow: '关注',
   interact_other: '其他互动', buy_guard: '上舰',
   guard_toast: '上舰提示', super_chat: '醒目留言',
 };