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

README.md

@@ -100,7 +100,6 @@ python main.py --room-id ROOM_ID [--voice VOICE] [--speed SPEED]
 | `blind_box` 盲盒礼物 | `{viewer_name}` `{gift_name}` `{gift_num}` `{blind_box_gift}` |
 | `enter_room` 进房 | `{viewer_name}` `{user_uid}` |
 | `follow` 关注 | `{viewer_name}` `{user_uid}` |
-| `like` 点赞 | `{viewer_name}` `{user_uid}` |
 | `interact_other` 其他互动 | `{viewer_name}` `{user_uid}` `{interact_type}`(分享/特别关注/互粉) |
 | `buy_guard` 上舰 | `{ships_viewer_name}` `{ships_level}`(舰长/提督/总督) `{ships_num}` `{ships_price}` |
 | `guard_toast` 上舰提示 | `{ships_viewer_name}` `{ships_level}` `{guard_days}` `{toast_msg}` |