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>

test/liveAnalysisPresentation.test.js

@@ -26,6 +26,19 @@ test('presents Laya identity progress using AI batch counters', () => {
     assert.equal(view.progressText, 'AI batch 3 of 8 · 38%');
 });
 
+test('presents local Laya language batch progress after projection', () => {
+    const view = present({
+        status: 'building',
+        phase: 'laya_language',
+        languageProcessed: 5,
+        languageTotal: 10
+    });
+    assert.equal(view.statusLabel, 'Detecting stream languages…');
+    assert.equal(view.progressIndeterminate, false);
+    assert.equal(view.progressPercent, 50);
+    assert.equal(view.progressText, 'Language batch 5 of 10 · 50%');
+});
+
 test('presents indeterminate progress when totals are unavailable', () => {
     const view = present({ status: 'queued', processed: null, total: null });
     assert.equal(view.busy, true);