Fix Hytale prometheus metrics and config editor syntax highlighting

- Add missing "hytale" entry to SERVER_JOBS in prometheus.js
- Fix config editor regex bug that was corrupting CSS class names (e.g. text-cyan-400 becoming text-cyan-<span>400</span>)
- Use placeholder tokens to prevent numbers regex from matching inside already-replaced spans

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

gsm-backend/services/prometheus.js

@@ -9,7 +9,8 @@ const SERVER_JOBS = {
   "zomboid": "zomboid",
   "palworld": "palworld",
   "terraria": "terraria",
-  "openttd": "openttd"
+  "openttd": "openttd",
+  "hytale": "hytale"
 };
 
 export async function queryPrometheus(query) {

gsm-frontend/src/components/HytaleConfigEditor.jsx

@@ -83,24 +83,44 @@ export default function HytaleConfigEditor({ token }) {
   function highlightSyntax(text) {
     if (!text) return ''
 
-    return text
+    // Escape HTML first
+    let result = text
       .replace(/&/g, '&')
       .replace(/</g, '&lt;')
       .replace(/>/g, '&gt;')
-      // Strings
-      .replace(/"([^"\\]|\\.)*"/g, (match) => {
-        // Check if it's a key (followed by :)
-        if (match.endsWith('"') && text.indexOf(match + ':') !== -1) {
-          return `<span class="text-blue-400">${match}</span>`
-        }
-        return `<span class="text-amber-300">${match}</span>`
-      })
-      // Numbers
-      .replace(/\b(-?\d+\.?\d*)\b/g, '<span class="text-cyan-400">$1</span>')
-      // Booleans and null
-      .replace(/\b(true|false|null)\b/g, '<span class="text-purple-400">$1</span>')
-      // Brackets
-      .replace(/([{}\[\]])/g, '<span class="text-gray-500">$1</span>')
+
+    // Use placeholder tokens to avoid regex conflicts
+    const tokens = []
+    let tokenIndex = 0
+
+    // Replace strings with placeholders
+    result = result.replace(/"([^"\\]|\\.)*"/g, (match) => {
+      const isKey = result.indexOf(match + ':') !== -1
+      const className = isKey ? 'text-blue-400' : 'text-amber-300'
+      tokens.push(`<span class="${className}">${match}</span>`)
+      return `\x00${tokenIndex++}\x00`
+    })
+
+    // Replace booleans and null
+    result = result.replace(/\b(true|false|null)\b/g, (match) => {
+      tokens.push(`<span class="text-purple-400">${match}</span>`)
+      return `\x00${tokenIndex++}\x00`
+    })
+
+    // Replace numbers (only standalone, not inside placeholders)
+    result = result.replace(/(?<!\x00)(-?\d+\.?\d*)(?!\x00)/g, (match) => {
+      if (match === '' || match === '-') return match
+      tokens.push(`<span class="text-cyan-400">${match}</span>`)
+      return `\x00${tokenIndex++}\x00`
+    })
+
+    // Replace brackets
+    result = result.replace(/([{}\[\]])/g, '<span class="text-gray-500">$1</span>')
+
+    // Restore tokens
+    result = result.replace(/\x00(\d+)\x00/g, (_, idx) => tokens[parseInt(idx)])
+
+    return result
   }
 
   if (loading) {