fix: track Laya language batches and normalize labels (#22)

Report post-projection Laya language detection as a busy analysis phase and normalize Laya language labels before caching and display.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

public/js/services/liveAnalysisPresentation.js

@@ -14,6 +14,13 @@
                 prefix: 'AI batch'
             };
         }
+        if (phase === 'laya_language') {
+            return {
+                processed: status.languageProcessed,
+                total: status.languageTotal,
+                prefix: 'Language batch'
+            };
+        }
         return { processed: status.processed, total: status.total, prefix: '', suffix: ' channels' };
     }
 
@@ -37,6 +44,8 @@
         const statusLabel = busy
             ? phase === 'laya_identity'
                 ? 'Analyzing with local AI…'
+                : phase === 'laya_language'
+                    ? 'Detecting stream languages…'
                 : phase === 'projecting'
                     ? 'Building channel catalog…'
                     : phase === 'writing'