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/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);
+        }
+    }
+});