Document markup and improve choice tags

public/js/socket-client-module.js

@@ -214,10 +214,20 @@ class SocketClientModule extends BaseModule {
             this.receivedParagraphCounter = 0;
         }
 
-        if (Array.isArray(data.globalTags) && data.globalTags.length > 0) {
+        const globalTags = Array.isArray(data.globalTags) ? data.globalTags : [];
+        const endState = data.gameState?.endState || null;
+        if (endState && !globalTags.some((tag) => tag?.key === 'score' || tag?.key === 'error')) {
+            globalTags.push({
+                key: endState.type === 'error' ? 'error' : 'score',
+                value: endState.message || ''
+            });
+        }
+
+        if (globalTags.length > 0) {
             document.dispatchEvent(new CustomEvent('story:global-tags', {
-                detail: data.globalTags
+                detail: globalTags
             }));
+            this.dispatchTurnTags(globalTags, null);
         }
 
         document.dispatchEvent(new CustomEvent('story:turn-start', {
@@ -245,6 +255,10 @@ class SocketClientModule extends BaseModule {
             document.dispatchEvent(new CustomEvent('story:process-state', {
                 detail: { state: 'ready', reason: 'choice-only-turn', turnId }
             }));
+        } else if (turnBlocks.length === 0 && inputMode === 'end') {
+            document.dispatchEvent(new CustomEvent('story:process-state', {
+                detail: { state: 'ready', reason: 'empty-end-turn', turnId }
+            }));
         }
     }