Add edit_on_player_enabled feature for playlist content

- Added edit_on_player_enabled column to playlist_content table
- Updated playlist model to track edit enablement per content item
- Added UI checkbox on upload media page to enable/disable editing
- Added toggle column on manage playlist page for existing content
- Updated API endpoint to return edit_on_player_enabled flag to players
- Fixed docker-entrypoint.sh to use production config
- Supports PDF, Images, and PPTX content types

app/templates/content/upload_media.html

@@ -296,6 +296,17 @@
                     </small>
                 </div>
                 
+                <div class="form-group">
+                    <label style="display: flex; align-items: center; cursor: pointer; user-select: none;">
+                        <input type="checkbox" name="edit_on_player_enabled" id="edit_on_player_enabled" 
+                               value="1" style="margin-right: 8px; width: 18px; height: 18px; cursor: pointer;">
+                        <span>Allow editing on player (PDF, Images, PPTX)</span>
+                    </label>
+                    <small style="color: #6c757d; display: block; margin-top: 4px; font-size: 11px;">
+                        ✏️ Enable local editing of this media on the player device
+                    </small>
+                </div>
+                
                 <!-- Upload Button -->
                 <button type="submit" class="btn-upload" id="upload-btn" disabled style="display: flex; align-items: center; justify-content: center; gap: 0.5rem; margin-top: 20px; padding: 12px 30px;">
                     <img src="{{ url_for('static', filename='icons/upload.svg') }}" alt="" style="width: 18px; height: 18px; filter: brightness(0) invert(1);">