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

danmaku_handler.py

@@ -130,7 +130,7 @@ class DanmakuHandler(blivedm.BaseHandler):
         logger.info("Super chat: %s (%d yuan): %s", message.uname, message.price, message.message)
         self._put(text)
 
-    # ── interact (enter room / follow / like / share) ──────────────────
+    # ── interact (enter room / follow / share) ─────────────────────────
     def _on_interact_word_v2(self, client: blivedm.BLiveClient, message: InteractWordV2Message) -> None:
         msg_type = message.msg_type
         if msg_type == 1:
@@ -141,10 +141,6 @@ class DanmakuHandler(blivedm.BaseHandler):
             text = event_text(self._rules, "follow",
                               viewer_name=message.username,
                               user_uid=message.uid)
-        elif msg_type == 6:
-            text = event_text(self._rules, "like",
-                              viewer_name=message.username,
-                              user_uid=message.uid)
         else:
             text = event_text(self._rules, "interact_other",
                               viewer_name=message.username,