fix toggle behavior and reorder replays table with play at beginning. Add missing messages script

scripts/check-missing-messages.js

@@ -0,0 +1,60 @@
+import { readdirSync, readFileSync } from 'node:fs';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+const messagesDir = join(__dirname, '..', 'public', 'intl', 'messages');
+
+const en = JSON.parse(readFileSync(join(messagesDir, 'en-US.json'), 'utf8'));
+
+// Flatten nested structure: { label: { foo: 'bar' } } -> { 'label.foo': 'bar' }
+function flatten(obj, prefix = '') {
+  const result = {};
+  for (const [k, v] of Object.entries(obj)) {
+    const key = prefix ? `${prefix}.${k}` : k;
+    if (typeof v === 'object' && v !== null) {
+      Object.assign(result, flatten(v, key));
+    } else {
+      result[key] = v;
+    }
+  }
+  return result;
+}
+
+const enFlat = flatten(en);
+const enKeys = Object.keys(enFlat);
+console.log(`en-US.json has ${enKeys.length} keys`);
+
+const files = readdirSync(messagesDir)
+  .filter(f => f.endsWith('.json') && f !== 'en-US.json')
+  .sort();
+
+const allMissing = {};
+let total = 0;
+
+for (const fname of files) {
+  const data = JSON.parse(readFileSync(join(messagesDir, fname), 'utf8'));
+  const flat = flatten(data);
+  const missing = enKeys.filter(k => !(k in flat));
+  if (missing.length) {
+    allMissing[fname] = missing;
+    console.log(`${fname}: ${missing.length} missing`);
+    total += missing.length;
+  }
+}
+console.log(`\nTotal missing across all locales: ${total}`);
+
+const keyCounts = {};
+for (const missing of Object.values(allMissing)) {
+  for (const k of missing) {
+    keyCounts[k] = (keyCounts[k] || 0) + 1;
+  }
+}
+const sorted = Object.entries(keyCounts).sort((a, b) => b[1] - a[1]);
+if (sorted.length) {
+  console.log('\nMost commonly missing keys:');
+  for (const [k, count] of sorted) {
+    console.log(`  "${k}": missing from ${count} files (en value: "${enFlat[k]}")`);
+  }
+}