feat: add unified contest pool and realtime game modes

backend/static/js/app.js

@@ -29,7 +29,7 @@ const state = {
   user: null,
   stories: [],
   contests: [],
-  track: "standard",
+  matchMode: "quiz",
   videoCatalog: null,
   videos: [],
   videoAbility: "",
@@ -446,12 +446,21 @@ async function loadContests() {
 
 function renderContests() {
   const root = $("#contest-list");
-  const contests = state.contests.filter((contest) => contest.track === state.track);
+  const contests = ["realtime", "daily", "practice"]
+    .map((kind) => {
+      const candidates = state.contests.filter((contest) => contest.kind === kind);
+      return (
+        candidates.find((contest) => contest.track === "open") ||
+        candidates.find((contest) => contest.track === "standard") ||
+        candidates[0]
+      );
+    })
+    .filter(Boolean);
   root.classList.remove("loading");
   root.replaceChildren(...contests.map((contest) => card({
     meta: contest.kind === "realtime" ? "实时竞技" : contest.kind === "daily" ? "今日挑战" : "自由练习",
-    title: contest.title,
-    body: contest.kind === "realtime" ? "Rating 匹配，同题序列，服务端计时和唯一结算。" : "完成整组题目，正式答案只在提交后显示。",
+    title: contest.title.replace(/^(入门|标准|进阶)/, ""),
+    body: contest.kind === "realtime" ? "统一玩家池，支持口算、数独与 24 点，服务端计时和 Rating 结算。" : "每次随机抽取题目，正式答案只在提交后显示。",
     foot: `${contest.duration_seconds} 秒`,
     action: contest.kind === "realtime" ? "开始匹配 →" : "开始答题 →",
     onClick: () => beginContest(contest),
@@ -827,7 +836,7 @@ async function loadProfile() {
       profile.recent_games.forEach((game) => {
         const item = document.createElement("div");
         const name = document.createElement("b");
-        name.textContent = `${game.label} · ${game.difficulty}`;
+        name.textContent = game.label;
         const detail = document.createElement("span");
         detail.textContent =
           game.status === "completed"
@@ -1255,10 +1264,13 @@ function bindUI() {
     $("#register-form").classList.toggle("hidden", button.dataset.authTab !== "register");
     $("#auth-error").textContent = "";
   }));
-  $$("#track-switch button").forEach((button) => button.addEventListener("click", () => {
-    state.track = button.dataset.track;
-    $$("#track-switch button").forEach((item) => item.classList.toggle("active", item === button));
-    renderContests();
+  $$("#match-mode-switch button").forEach((button) => button.addEventListener("click", () => {
+    state.matchMode = button.dataset.matchMode;
+    $$("#match-mode-switch button").forEach((item) => {
+      item.classList.toggle("active", item === button);
+    });
+    const label = button.querySelector("b").textContent;
+    $("#challenge-create").textContent = `创建${label}约战`;
   }));
   $("#login-form").addEventListener("submit", async (event) => {
     event.preventDefault();