From dbde827f756ffeddebb6aac998ad5973723ef9aa Mon Sep 17 00:00:00 2001
From: prosolis <5590409+prosolis@users.noreply.github.com>
Date: Tue, 14 Jul 2026 19:32:08 -0700
Subject: [PATCH] games: the chat line that shows up once, not twice
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Your own message came back twice — once from the POST that sent it, once
echoed over your own SSE stream — so the felt printed it on the rail twice.
Drop any chat id already seen; reset the seen-set when the log is cleared
(unseated, and on a full chat reload).

Claude-Session: https://claude.ai/code/session_013M5nD7PgUboJXoDcYHzpuJ
---
 internal/web/static/js/holdem.js |  9 +++++++++
 internal/web/static/js/uno.js    | 10 +++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/internal/web/static/js/holdem.js b/internal/web/static/js/holdem.js
index 8ee12b2..9cdd199 100644
--- a/internal/web/static/js/holdem.js
+++ b/internal/web/static/js/holdem.js
@@ -62,6 +62,7 @@
 
   var chatSection = root.querySelector("[data-chat]");
   var chatLog     = root.querySelector("[data-chat-log]");
+  var chatSeen    = {}; // chat line ids already on the rail, to drop echoed duplicates
   var chatForm    = root.querySelector("[data-chat-form]");
   var chatInput   = root.querySelector("[data-chat-input]");
   var lobbyWrap   = root.querySelector("[data-lobby-wrap]");
@@ -734,6 +735,7 @@
   function unseated() {
     disconnectLive();
     if (chatLog) chatLog.innerHTML = "";
+    chatSeen = {};
   }
 
   function connectLive() {
@@ -775,6 +777,7 @@
       .then(function (data) {
         if (!data || !chatLog) return;
         chatLog.innerHTML = "";
+        chatSeen = {};
         (data.chat || []).forEach(addChat);
       })
       .catch(function () {});
@@ -782,6 +785,12 @@
 
   function addChat(line) {
     if (!chatLog || !line) return;
+    // Your own line comes back twice — once from the POST that sent it, once
+    // echoed over your own stream — so drop any id already on the rail.
+    if (line.id) {
+      if (chatSeen[line.id]) return;
+      chatSeen[line.id] = true;
+    }
     var row = document.createElement("div");
     row.className = "pete-chat-line" + (line.mine ? " pete-chat-mine" : "");
     var who = document.createElement("span");
diff --git a/internal/web/static/js/uno.js b/internal/web/static/js/uno.js
index 58ecb52..72619ec 100644
--- a/internal/web/static/js/uno.js
+++ b/internal/web/static/js/uno.js
@@ -66,6 +66,7 @@
   var tableMsg   = root.querySelector("[data-table-msg]");
 
   var chatLog   = root.querySelector("[data-chat-log]");
+  var chatSeen  = {}; // chat line ids already on the rail, to drop echoed duplicates
   var chatForm  = root.querySelector("[data-chat-form]");
   var chatInput = root.querySelector("[data-chat-input]");
 
@@ -785,7 +786,7 @@
   // ---- the live stream -------------------------------------------------------
 
   function seated() { loadChat(); connectLive(); }
-  function unseated() { disconnectLive(); if (chatLog) chatLog.innerHTML = ""; }
+  function unseated() { disconnectLive(); if (chatLog) chatLog.innerHTML = ""; chatSeen = {}; }
 
   function connectLive() {
     if (stream || !window.EventSource) return;
@@ -818,6 +819,7 @@
       .then(function (data) {
         if (!data || !chatLog) return;
         chatLog.innerHTML = "";
+        chatSeen = {};
         (data.chat || []).forEach(addChat);
       })
       .catch(function () {});
@@ -825,6 +827,12 @@
 
   function addChat(line) {
     if (!chatLog || !line) return;
+    // Your own line comes back twice — once from the POST that sent it, once
+    // echoed over your own stream — so drop any id already on the rail.
+    if (line.id) {
+      if (chatSeen[line.id]) return;
+      chatSeen[line.id] = true;
+    }
     var row = document.createElement("div");
     row.className = "pete-chat-line" + (line.mine ? " pete-chat-mine" : "");
     var who = document.createElement("span");