Add comprehensive feature updates based on user feedback

- Implement complete list management system with CRUD operations
- Add dynamic character count display with instance limits
- Include post visibility information in timeline display
- Show user interaction status (favorited/boosted/bookmarked)
- Extend sound system with social action events
- Add list timeline integration and management interface
- Update documentation with all new features

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

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

README.md

@@ -36,6 +36,12 @@ This project was created through "vibe coding" - a collaborative development app
 - **Profile Editing**: Edit your profile information including display name, bio, profile fields, and privacy settings
 - **Search Functionality**: Search for users, hashtags, and posts across the fediverse with dedicated search interface
 - **Timeline Filtering**: Customize your timeline view by hiding/showing replies, boosts, mentions, and media content
+- **List Management**: Create and manage custom lists with full CRUD operations and member management
+- **List Timelines**: View focused timelines from your created lists with dedicated list timeline support
+- **Enhanced Character Limits**: Dynamic character count display showing actual instance limits (e.g., "21/3000")
+- **Post Visibility Display**: See post visibility levels (Public, Unlisted, Followers-only, Direct) in timeline
+- **User Interaction Status**: Visual indicators showing your favorited, boosted, and bookmarked posts in timeline
+- **Extended Sound Events**: Comprehensive audio feedback for social actions including block, bookmark, delete, and undo operations
 
 ## Audio System
 
@@ -59,7 +65,7 @@ Bifrost includes a sophisticated sound system with intelligent notification hand
 - **Full Fediverse Handles**: Completes to full format (@user@instance.com)
 - **Emoji Autocomplete**: Type `:` to search 5,000+ Unicode emojis
 - **Keyword Search**: Find emojis by typing keywords (`:fire`, `:heart`, `:grin`)
-- **Real-time Character Count**: Visual feedback with limit warnings
+- **Dynamic Character Count**: Real-time display with actual instance limits (e.g., "21/3000")
 - **Content Warnings**: Optional spoiler text support
 - **Visibility Controls**: Public, Unlisted, Followers-only, or Direct messages
 - **Poll Creation**: Add polls with up to 4 options, single or multiple choice, with expiration times
@@ -130,6 +136,7 @@ Bifrost includes a sophisticated sound system with intelligent notification hand
 - **Ctrl+,**: Open Settings
 - **Ctrl+Shift+A**: Add new account
 - **Ctrl+Alt+E**: Edit your profile
+- **Ctrl+L**: Open List Manager
 - **Ctrl+Alt+S**: Open Soundpack Manager
 - **Ctrl+Q**: Quit application
 
@@ -351,6 +358,35 @@ Customize your timeline experience with **Ctrl+Shift+F**:
 - **Accessible Interface**: Full keyboard navigation and clear descriptions
 - **Reset Option**: Quick reset to default filter settings
 
+## List Management
+
+Bifrost includes comprehensive list management functionality accessible via **Ctrl+L**:
+
+### Creating and Managing Lists
+- **List Creation**: Create custom lists with descriptive titles and configurable replies policies
+- **List Editing**: Modify list titles and replies behavior after creation
+- **List Deletion**: Remove lists with confirmation dialog for safety
+- **Accessible Interface**: Full keyboard navigation with clear announcements
+
+### List Member Management
+- **Add Members**: Add accounts from your followed accounts to lists with search functionality
+- **Remove Members**: Remove accounts from lists with multi-selection support
+- **Search Integration**: Filter followed accounts by name or username when adding to lists
+- **Real-time Updates**: Member lists update immediately after modifications
+
+### List Timelines
+- **Dedicated Timeline Access**: View list timelines through the Lists submenu in main window
+- **Dynamic Menu**: Lists submenu automatically updates when lists are created or deleted
+- **Focused Content**: See posts only from accounts in specific lists
+- **Timeline Integration**: List timelines work with all existing timeline features (refresh, pagination, etc.)
+
+### List Features
+- **Replies Policy Control**: Configure whether to show replies to list members, followed accounts, or no replies
+- **Background Operations**: All list operations use background threading for responsive UI
+- **Error Handling**: Comprehensive error handling with accessible feedback
+- **Multi-selection Support**: Select multiple accounts when adding or removing list members
+- **Validation**: Input validation ensures lists have proper titles and configuration
+
 ## Accessibility Features
 
 - Complete keyboard navigation
@@ -404,6 +440,13 @@ Your sound pack should include audio files for these events:
 - `collapse` - Thread collapsed (optional)
 - `success` - General success feedback (optional)
 - `error` - Error occurred (optional)
+- `block` - User blocked (optional)
+- `unblock` - User unblocked (optional)
+- `bookmark` - Post bookmarked (optional)
+- `unbookmark` - Post unbookmarked (optional)
+- `unfavorite` - Post unfavorited (optional)
+- `unboost` - Post unboosted (optional)
+- `delete_post` - Post deleted (optional)
 
 #### Creating pack.json