feat: show loading stage name, count, and overall progress

Progress bar now fills to overall completion across all stages.
Label shows e.g. "text model  1/3  23%" and stats panel shows
"text model (1/3)". Label bumped to 8px full amber for readability.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/app.js

@@ -58,10 +58,20 @@
 
     // Progress bar: model loading or prompt processing
     if (loading) {
-      const pct = Math.round((loading.progress ?? 0) * 100);
-      progressFill.style.width  = pct + '%';
-      progressLabel.textContent = loading.current + '  ' + pct + '%';
-      svLoadStage.textContent   = loading.current;
+      const stageName  = (loading.current ?? '').replace(/_/g, ' ');
+      const stageIdx   = (loading.stages ?? []).indexOf(loading.current);
+      const totalStages = (loading.stages ?? []).length;
+      const stagePct   = Math.round((loading.progress ?? 0) * 100);
+      const overallPct = totalStages > 0
+        ? Math.round(((stageIdx + (loading.progress ?? 0)) / totalStages) * 100)
+        : stagePct;
+      progressFill.style.width  = overallPct + '%';
+      progressLabel.textContent = stageName
+        + (totalStages > 1 ? '  ' + (stageIdx + 1) + '/' + totalStages : '')
+        + '  ' + stagePct + '%';
+      svLoadStage.textContent   = totalStages > 1
+        ? stageName + ' (' + (stageIdx + 1) + '/' + totalStages + ')'
+        : stageName;
     } else if (state === 'processing_prompt' && metrics && metrics.prompt_progress != null) {
       const pct = Math.round(metrics.prompt_progress * 100);
       progressFill.style.width  = pct + '%';

frontend/style.css

@@ -245,8 +245,8 @@ body.state-error #llama { animation: error-flash 1s ease-in-out infinite; }
   transition: width 0.4s ease;
 }
 #progress-label {
-  font-size: 7px;
-  color: var(--amber-dim);
+  font-size: 8px;
+  color: var(--amber);
 }
 
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