fix(live): expose full refresh busy and phase progress

Ensure full refresh marks the live projection as building before source refresh awaits, and expose phase-specific counters so language detection progress is determinate.

Covers #40 and #41.

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

test/liveAnalysisPresentation.test.js

@@ -26,12 +26,14 @@ 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', () => {
+test('presents local Laya language batch progress from generic phase counters', () => {
     const view = present({
         status: 'building',
         phase: 'laya_language',
-        languageProcessed: 5,
-        languageTotal: 10
+        phaseProcessed: 5,
+        phaseTotal: 10,
+        layaProcessed: 2,
+        layaTotal: 20
     });
     assert.equal(view.statusLabel, 'Detecting stream languages…');
     assert.equal(view.progressIndeterminate, false);
@@ -39,12 +41,24 @@ test('presents local Laya language batch progress after projection', () => {
     assert.equal(view.progressText, 'Language batch 5 of 10 · 50%');
 });
 
+test('falls back to Laya counters for language batch progress', () => {
+    const view = present({
+        status: 'building',
+        phase: 'laya_language',
+        layaProcessed: 5,
+        layaTotal: 10
+    });
+    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);
     assert.equal(view.progressIndeterminate, true);
     assert.equal(view.progressPercent, null);
-    assert.equal(view.progressText, 'In progress…');
+    assert.equal(view.progressText, 'In progress — this step may take several minutes.');
     assert.equal(view.buttonLabel, 'Analyze channels');
     assert.equal(present({ status: 'running', processed: null, total: 100 }).progressIndeterminate, true);
 });