Fix progress overlay, play-from-position, layout cutoff, speaker info

- Replace progress bar with task checklist showing pipeline steps
  (load model, transcribe, load diarization, identify speakers, merge)
- Fix WaveformPlayer: track ready state, disable controls until loaded,
  play from current position instead of resetting to start
- Fix workspace height calc to prevent bottom content cutoff
- Show HF_TOKEN setup hint in SpeakerManager when no speakers detected
- Add console logging for progress events to aid debugging

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

src/lib/components/ProgressOverlay.svelte

@@ -7,6 +7,38 @@
   }
 
   let { visible = false, percent = 0, stage = '', message = '' }: Props = $props();
+
+  // Map internal stage names to user-friendly labels
+  const stageLabels: Record<string, string> = {
+    'pipeline': 'Pipeline',
+    'loading_model': 'Loading Model',
+    'transcribing': 'Transcribing',
+    'loading_diarization': 'Loading Diarization',
+    'diarizing': 'Speaker Detection',
+    'done': 'Complete',
+  };
+
+  // Pipeline steps for the task list
+  const pipelineSteps = [
+    { key: 'loading_model', label: 'Load transcription model' },
+    { key: 'transcribing', label: 'Transcribe audio' },
+    { key: 'loading_diarization', label: 'Load speaker detection model' },
+    { key: 'diarizing', label: 'Identify speakers' },
+    { key: 'merging', label: 'Merge results' },
+  ];
+
+  function getStepStatus(stepKey: string, currentStage: string): 'pending' | 'active' | 'done' {
+    const stepOrder = pipelineSteps.map(s => s.key);
+    const currentIdx = stepOrder.indexOf(currentStage);
+    const stepIdx = stepOrder.indexOf(stepKey);
+
+    if (currentStage === 'done') return 'done';
+    if (stepIdx < currentIdx) return 'done';
+    if (stepIdx === currentIdx) return 'active';
+    return 'pending';
+  }
+
+  let displayStage = $derived(stageLabels[stage] || stage || 'Processing...');
 </script>
 
 {#if visible}
@@ -14,12 +46,28 @@
     <div class="progress-card">
       <div class="spinner-row">
         <div class="spinner"></div>
-        <h3>{stage || 'Processing...'}</h3>
+        <h3>{displayStage}</h3>
       </div>
-      <div class="bar-track">
-        <div class="bar-fill" style="width: {Math.max(percent, 2)}%"></div>
+
+      <div class="steps">
+        {#each pipelineSteps as step}
+          {@const status = getStepStatus(step.key, stage)}
+          <div class="step" class:step-done={status === 'done'} class:step-active={status === 'active'}>
+            <span class="step-icon">
+              {#if status === 'done'}
+                ✓
+              {:else if status === 'active'}
+                ⟳
+              {:else}
+                ·
+              {/if}
+            </span>
+            <span class="step-label">{step.label}</span>
+          </div>
+        {/each}
       </div>
-      <p class="status-text">{percent}% — {message || 'Please wait...'}</p>
+
+      <p class="status-text">{message || 'Please wait...'}</p>
       <p class="hint-text">This may take several minutes for large files</p>
     </div>
   </div>
@@ -39,7 +87,8 @@
     background: #16213e;
     padding: 2rem 2.5rem;
     border-radius: 12px;
-    min-width: 420px;
+    min-width: 380px;
+    max-width: 440px;
     color: #e0e0e0;
     border: 1px solid #2a3a5e;
     box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
@@ -57,35 +106,52 @@
     border-top-color: #e94560;
     border-radius: 50%;
     animation: spin 0.8s linear infinite;
+    flex-shrink: 0;
   }
   @keyframes spin {
     to { transform: rotate(360deg); }
   }
   h3 {
     margin: 0;
-    text-transform: capitalize;
     font-size: 1.1rem;
   }
-  .bar-track {
-    height: 10px;
-    background: #0f3460;
-    border-radius: 5px;
-    overflow: hidden;
+  .steps {
+    display: flex;
+    flex-direction: column;
+    gap: 0.4rem;
+    margin-bottom: 1rem;
   }
-  .bar-fill {
-    height: 100%;
-    background: linear-gradient(90deg, #e94560, #ff6b81);
-    transition: width 0.3s;
-    border-radius: 5px;
+  .step {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-size: 0.85rem;
+    color: #555;
+  }
+  .step-done {
+    color: #4ecdc4;
+  }
+  .step-active {
+    color: #e0e0e0;
+    font-weight: 500;
+  }
+  .step-icon {
+    width: 1.2rem;
+    text-align: center;
+    flex-shrink: 0;
+  }
+  .step-active .step-icon {
+    animation: spin 1.5s linear infinite;
+    display: inline-block;
   }
   .status-text {
     margin: 0.75rem 0 0;
-    font-size: 0.9rem;
+    font-size: 0.85rem;
     color: #b0b0b0;
   }
   .hint-text {
     margin: 0.5rem 0 0;
     font-size: 0.75rem;
-    color: #666;
+    color: #555;
   }
 </style>