feat: Display Whisper model status in frontend and add debug logging

- Add activeWhisperConfig tracking in main.js to expose current Whisper settings
- Expand get-sidecar-status IPC handler to return whisper config (model, device, compute, configSource)
- Add Whisper status display in meeting-detail.html transcript panel header
- Status updates every 5 seconds and shows: model, device, compute type, and ready state
- Add comprehensive debug logging for config loading and whisper config resolution
- Helps diagnose why config.json settings may not be passed correctly to sidecar

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

client/src/pages/meeting-detail.html

@@ -170,6 +170,7 @@
       <div class="panel">
         <div class="panel-header">
           <span>Transcript (逐字稿)</span>
+          <span id="whisper-status" style="font-size: 11px; color: #666; margin-left: 10px;" title="Whisper Model Info">Loading...</span>
           <div class="recording-controls" style="padding: 0; display: flex; gap: 8px;">
             <button class="btn btn-danger" id="record-btn">Start Recording</button>
             <button class="btn btn-secondary" id="upload-audio-btn">Upload Audio</button>
@@ -281,6 +282,31 @@
     const uploadProgressEl = document.getElementById('upload-progress');
     const uploadProgressText = document.getElementById('upload-progress-text');
     const uploadProgressFill = document.getElementById('upload-progress-fill');
+    const whisperStatusEl = document.getElementById('whisper-status');
+
+    // Update Whisper status display
+    async function updateWhisperStatus() {
+      try {
+        const status = await window.electronAPI.getSidecarStatus();
+        if (status.whisper) {
+          const readyIcon = status.ready ? '✅' : '⏳';
+          whisperStatusEl.textContent = `${readyIcon} Model: ${status.whisper.model} | Device: ${status.whisper.device} | Compute: ${status.whisper.compute}`;
+          whisperStatusEl.title = `Config source: ${status.whisper.configSource || 'unknown'}`;
+          whisperStatusEl.style.color = status.ready ? '#28a745' : '#ffc107';
+        } else {
+          whisperStatusEl.textContent = status.ready ? '✅ Ready' : '⏳ Loading...';
+          whisperStatusEl.style.color = status.ready ? '#28a745' : '#ffc107';
+        }
+      } catch (error) {
+        whisperStatusEl.textContent = '❌ Error';
+        whisperStatusEl.style.color = '#dc3545';
+        console.error('Failed to get sidecar status:', error);
+      }
+    }
+
+    // Initial status check and periodic updates
+    updateWhisperStatus();
+    const whisperStatusInterval = setInterval(updateWhisperStatus, 5000);
 
     // Load meeting data
     async function loadMeeting() {