Add rename functionality for recordings

- Added /rename/<filename> API endpoint
  - Accepts new_name in JSON body
  - Automatically appends .wav extension if missing
  - Uses secure_filename() for safety
  - Checks for existing files to prevent overwrites
  - Backs up renamed file to USB if backup enabled

- Updated web interface (template v1.6.0)
  - Added "Rename" button to each recording
  - Added renameRecording() JavaScript function
  - Uses prompt dialog for name input
  - Pre-fills current name (without .wav extension)
  - Reloads page after successful rename

This allows users to assign guest names to recordings
for easier organization (e.g., "John_Smith.wav").

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

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

rotary_phone_web.py

@@ -81,7 +81,7 @@ BACKUP_ON_WRITE = BACKUP_CONFIG.get('backup_on_write', True)
 WEB_PORT = SYS_CONFIG['web']['port']
 
 # Template version - increment this when HTML template changes
-TEMPLATE_VERSION = "1.5.0"  # Updated: Redesigned sound selection with dropdowns
+TEMPLATE_VERSION = "1.6.0"  # Updated: Added rename functionality for recordings
 
 # Flask app
 app = Flask(__name__)
@@ -945,6 +945,40 @@ def delete_recording(filename):
         return jsonify({"success": True})
     return jsonify({"error": "File not found"}), 404
 
+@app.route('/rename/<filename>', methods=['POST'])
+def rename_recording(filename):
+    """Rename a recording"""
+    data = request.get_json()
+    new_name = data.get('new_name', '').strip()
+
+    if not new_name:
+        return jsonify({"error": "New name is required"}), 400
+
+    # Ensure .wav extension
+    if not new_name.endswith('.wav'):
+        new_name += '.wav'
+
+    # Sanitize filenames
+    old_filepath = os.path.join(OUTPUT_DIR, secure_filename(filename))
+    new_filepath = os.path.join(OUTPUT_DIR, secure_filename(new_name))
+
+    if not os.path.exists(old_filepath):
+        return jsonify({"error": "File not found"}), 404
+
+    if os.path.exists(new_filepath):
+        return jsonify({"error": "A file with that name already exists"}), 409
+
+    try:
+        os.rename(old_filepath, new_filepath)
+
+        # Also backup renamed file if backup is enabled
+        if SYS_CONFIG['backup']['enabled'] and SYS_CONFIG['backup']['backup_on_write']:
+            backup_file_to_usb(new_filepath, 'recordings')
+
+        return jsonify({"success": True, "new_name": secure_filename(new_name)})
+    except Exception as e:
+        return jsonify({"error": str(e)}), 500
+
 @app.route('/restore_default_sound', methods=['POST'])
 def restore_default_sound():
     """Restore default dial tone"""
@@ -1752,10 +1786,10 @@ def main():
                 {% for recording in recordings %}
                 <div class="recording-item" id="recording-{{ loop.index }}">
                     <div class="recording-info">
-                        <h3>{{ recording.filename }}</h3>
+                        <h3 id="filename-{{ loop.index }}">{{ recording.filename }}</h3>
                         <div class="recording-meta">
-                            📅 {{ recording.date }} | 
+                            📅 {{ recording.date }} |
-                            ⏱️ {{ "%.1f"|format(recording.duration) }}s | 
+                            ⏱️ {{ "%.1f"|format(recording.duration) }}s |
                             💾 {{ "%.2f"|format(recording.size_mb) }} MB
                         </div>
                     </div>
@@ -1766,6 +1800,9 @@ def main():
                         <button class="btn btn-primary" onclick="downloadRecording('{{ recording.filename }}')">
                             ⬇️ Download
                         </button>
+                        <button class="btn btn-secondary" onclick="renameRecording('{{ recording.filename }}', {{ loop.index }})">
+                            ✏️ Rename
+                        </button>
                         <button class="btn btn-danger" onclick="deleteRecording('{{ recording.filename }}', {{ loop.index }})">
                             🗑️ Delete
                         </button>
@@ -1985,6 +2022,30 @@ def main():
             }
         }
 
+        function renameRecording(filename, index) {
+            // Remove .wav extension for cleaner input
+            const nameWithoutExt = filename.replace('.wav', '');
+            const newName = prompt('Enter new name for recording:', nameWithoutExt);
+
+            if (newName && newName.trim() !== '' && newName !== nameWithoutExt) {
+                fetch('/rename/' + filename, {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ new_name: newName.trim() })
+                })
+                .then(response => response.json())
+                .then(data => {
+                    if (data.success) {
+                        showAlert('Recording renamed! ✓', 'success');
+                        setTimeout(() => location.reload(), 1500);
+                    } else {
+                        showAlert('Error: ' + data.error, 'error');
+                    }
+                })
+                .catch(error => showAlert('Error: ' + error, 'error'));
+            }
+        }
+
         function playAudio(type, filename) {
             const modal = document.getElementById('audio-modal');
             const player = document.getElementById('audio-player');