Move inline template scripts into webpack-built assets

Several templates had their own <script> blocks instead of going
through webpack like game1.js already does. Extracted the waiting
page, lobby page, and admin session-log tab scripts into their own
files under assets/, imported from the main app.js entry. Since
app.js is already loaded on every page, each module just reads its
own data-* attributes and no-ops if its target element isn't present
on the current page - same pattern game1.js already uses.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

assets/admin-session-tabs.js

@@ -0,0 +1,27 @@
+document.addEventListener('DOMContentLoaded', () => {
+    const buttons = document.querySelectorAll('[data-tab-target]');
+    if (!buttons.length) {
+        return;
+    }
+
+    const activate = (id) => {
+        document.querySelectorAll('[id^="player-"]').forEach(el => el.style.display = 'none');
+        const target = document.getElementById(id);
+        if (target) {
+            target.style.display = 'block';
+        }
+
+        buttons.forEach(btn => {
+            const active = btn.dataset.tabTarget === id;
+            btn.style.background = active ? '#fff' : '#f8fafc';
+            btn.style.color = active ? '#1e40af' : '#64748b';
+            btn.style.fontWeight = active ? '600' : '400';
+            btn.style.borderColor = active ? '#3b82f6' : '#e2e8f0';
+            btn.style.borderBottom = active ? '1px solid #fff' : '1px solid #e2e8f0';
+        });
+    };
+
+    buttons.forEach(btn => {
+        btn.addEventListener('click', () => activate(btn.dataset.tabTarget));
+    });
+});

assets/app.js

@@ -5,3 +5,6 @@ import './styles/app.scss';
 import 'bootstrap/js/dist/collapse';
 import 'bootstrap/js/dist/alert';
 import 'bootstrap/js/dist/dropdown';
+import './game-waiting';
+import './game-lobby';
+import './admin-session-tabs';

assets/game-lobby.js

@@ -0,0 +1,62 @@
+document.addEventListener('DOMContentLoaded', () => {
+    const config = document.getElementById('game-lobby-config');
+    if (!config) {
+        return;
+    }
+
+    const publicUrl = config.dataset.mercurePublicUrl;
+    const topic = config.dataset.topic;
+    const chatLog = document.getElementById('lobby-chat-log');
+
+    function appendLobbyMessage(username, content, createdAt) {
+        if (!chatLog) {
+            return;
+        }
+        const emptyNotice = document.getElementById('lobby-chat-empty');
+        if (emptyNotice) {
+            emptyNotice.remove();
+        }
+
+        const time = createdAt
+            ? new Date(createdAt).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })
+            : '';
+
+        const wrapper = document.createElement('div');
+        wrapper.className = 'lobby-message';
+
+        const author = document.createElement('strong');
+        author.textContent = username;
+
+        const timestamp = document.createElement('span');
+        timestamp.className = 'text-muted small';
+        timestamp.textContent = ' ' + time;
+
+        const body = document.createElement('div');
+        body.textContent = content;
+
+        wrapper.appendChild(author);
+        wrapper.appendChild(timestamp);
+        wrapper.appendChild(body);
+        chatLog.appendChild(wrapper);
+        chatLog.scrollTop = chatLog.scrollHeight;
+    }
+
+    if (publicUrl && topic) {
+        const url = new URL(publicUrl);
+        url.searchParams.append('topic', topic);
+
+        const eventSource = new EventSource(url);
+        eventSource.onmessage = event => {
+            const data = JSON.parse(event.data);
+            if (data.type === 'lobby_message') {
+                appendLobbyMessage(data.username, data.content, data.createdAt);
+            } else if (data.type === 'player_joined' || data.type === 'session_started') {
+                window.location.reload();
+            }
+        };
+    }
+
+    if (chatLog) {
+        chatLog.scrollTop = chatLog.scrollHeight;
+    }
+});

assets/game-waiting.js

@@ -0,0 +1,68 @@
+document.addEventListener('DOMContentLoaded', () => {
+    const config = document.getElementById('game-waiting-config');
+    if (!config) {
+        return;
+    }
+
+    const publicUrl = config.dataset.mercurePublicUrl;
+    const topic = config.dataset.topic;
+    const readyAt = config.dataset.readyAt;
+
+    let reloading = false;
+    const reloadOnce = (eventSource) => {
+        if (reloading) {
+            return;
+        }
+        reloading = true;
+        if (eventSource) {
+            eventSource.close();
+        }
+        window.location.reload();
+    };
+
+    if (publicUrl && topic) {
+        const url = new URL(publicUrl);
+        url.searchParams.append('topic', topic);
+
+        const eventSource = new EventSource(url);
+        eventSource.onmessage = event => {
+            const data = JSON.parse(event.data);
+            if (data.type === 'all_ready' || data.type === 'player_ready') {
+                reloadOnce(eventSource);
+            }
+        };
+    }
+
+    // Our own ready status expires 60s after we set it - proactively tell the
+    // server as close to that deadline as possible, so the other players find
+    // out live instead of only whenever someone else's request happens to
+    // trigger the lazy check.
+    if (readyAt) {
+        const timeoutMs = 61000; // slightly more than the server-side 60s
+        const readyAtMs = readyAt * 1000;
+        const countdownEl = document.getElementById('ready-countdown');
+        const expireForm = document.getElementById('expire-ready-form');
+
+        const updateCountdown = () => {
+            const remaining = Math.max(0, Math.ceil((readyAtMs + timeoutMs - Date.now()) / 1000));
+            if (countdownEl) {
+                const m = Math.floor(remaining / 60);
+                const s = remaining % 60;
+                countdownEl.textContent = m + ':' + s.toString().padStart(2, '0');
+            }
+            return remaining;
+        };
+
+        const remaining = updateCountdown();
+        if (remaining <= 0) {
+            expireForm?.submit();
+        } else {
+            const countdownInterval = setInterval(() => {
+                if (updateCountdown() <= 0) {
+                    clearInterval(countdownInterval);
+                    expireForm?.submit();
+                }
+            }, 1000);
+        }
+    }
+});