Rename windows_98 labs feature to retro

Avoid trademark issues by using a generic name.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

homeassistant/components/frontend/manifest.json

@@ -19,7 +19,7 @@
   ],
   "documentation": "https://www.home-assistant.io/integrations/frontend",
   "integration_type": "system",
-  "preview_features": { "windows_98": {}, "winter_mode": {} },
+  "preview_features": { "retro": {}, "winter_mode": {} },
   "quality_scale": "internal",
   "requirements": ["home-assistant-frontend==20260312.0"]
 }

homeassistant/components/frontend/strings.json

@@ -1,10 +1,10 @@
 {
   "preview_features": {
-    "windows_98": {
-      "description": "Transforms your dashboard with a nostalgic Windows 98 look.",
+    "retro": {
+      "description": "Transforms your dashboard with a nostalgic retro look.",
       "disable_confirmation": "Your dashboard will return to its normal look. You can re-enable this at any time in Labs settings.",
-      "enable_confirmation": "Your dashboard will be transformed with a Windows 98 theme. You can turn this off at any time in Labs settings.",
-      "name": "Windows 98"
+      "enable_confirmation": "Your dashboard will be transformed with a retro theme. You can turn this off at any time in Labs settings.",
+      "name": "Retro"
     },
     "winter_mode": {
       "description": "Adds falling snowflakes on your screen. Get your home ready for winter! ❄️\n\nIf you have animations disabled in your device accessibility settings, this feature will not work.",

homeassistant/generated/labs.py

@@ -19,7 +19,7 @@ LABS_PREVIEW_FEATURES = {
         },
     },
     "frontend": {
-        "windows_98": {
+        "retro": {
             "feedback_url": "",
             "learn_more_url": "",
             "report_issue_url": "",