Update README with deno detection and folder structure

Added deno to the detection features and clarified usage in the about dialog. Improved folder structure documentation for consistency, added missing files, and updated formatting for better readability. Also updated troubleshooting advice for format table display.

README.md

@@ -212,7 +212,7 @@ python main.py
      d. Select the `cookies.txt` file in the app
 - **Save Download Path:** Save the default download path for future downloads. You can find this option in the download settings dialog.
 - **Update yt-dlp:** Check and update yt-dlp to the latest version from within the app. You can find this option in the download settings dialog.
-- **FFmpeg/yt-dlp Detection:** Automatically detect FFmpeg/yt-dlp path and version. You can find this option in the about dialog.
+- **FFmpeg/yt-dlp/deno Detection:** Automatically detect FFmpeg/yt-dlp/deno path and version. You can use this option by clicking on about button.
 - **Trim Video:** Download only specific parts of a video by specifying time ranges (HH:MM:SS format)
 - **Proxy Support:** Use a proxy server for downloads (e.g., `http://<proxy-server>:<port>`)
 - **Force output Format:** Force download in a specific format (e.g., `mp4`, `mkv`). You can find this option in the download settings dialog.
@@ -247,7 +247,7 @@ YTSage supports **14 languages** for worldwide accessibility. Select your prefer
 <details>
 <summary>Click to view common issues and solutions</summary>
 
-- **Format table not displaying:** Update yt-dlp to the latest version.
+- **Format table not displaying:** Update yt-dlp to the latest version, and switch to yt-dlp nightly.
 - **Download fails:** Check your internet connection and ensure the video is available.
 - **Specific download errors:**
   - **Private videos:** Use cookie authentication to access private content.
@@ -329,25 +329,24 @@ This document describes the organized folder structure of YTSage.
 ```
 YTSage/
 ├── 📁 .github/                   # GitHub configuration
-│   ├── 📄 CI_CD_README.md         # CI/CD documentation
 │   ├── 📁 ISSUE_TEMPLATE/         # Issue templates
 │   │   └── 🐛-bug-report.md       # Bug report template
-│   └── 📁 workflows/              # GitHub Actions workflows
+│   ├─── 📁 workflows/              # GitHub Actions workflows
-│       ├── build-linux.yml        # Linux build workflow
+│   │   ├── build-linux.yml        # Linux build workflow
-│       ├── build-macos.yml        # macOS build workflow
+│   │   ├── build-macos.yml        # macOS build workflow
-│       └── build-windows.yml      # Windows build workflow
+│   │   └── build-windows.yml      # Windows build workflow
-├──  .gitignore                 # Git ignore rules
+│   └── 📄 CI_CD_README.md        # CI/CD documentation
 ├──  📁 assets/                    # Static assets and resources
 │   ├── 📁 branding/              # Branding assets
 │   │   ├── 📁 icons/             # Application icons
 │   │   │   ├── icon.icns         # macOS icon
 │   │   │   ├── icon.png          # PNG icon
 │   │   │   └── YTSage.ico        # Windows icon
-│   │   └── 📁 screenshots/       # Screenshots for documentation
+│   │   ├── 📁 screenshots/       # Screenshots for documentation
-│   │       ├── audio_format.png
+│   │   │   ├── audio_format.png
-│   │       ├── main.png
+│   │   │   ├── main.png
-│   │       ├── playlist.png
+│   │   │   ├── playlist.png
-│   │       └── subtitle_options.png
+│   │   │   └── subtitle_options.png
 │   │   └── 📁 svg/               # SVG assets
 │   │       └── ytsage-wordmark.svg
 │   ├── 📁 Icon/                  # Legacy icon directory
@@ -372,16 +371,17 @@ YTSage/
 ├── 📄 LICENSE                    # License file
 ├── 📄 main.py                    # Application entry point
 ├── 📄 README.md                  # Project documentation
+├── 📄 .gitignore                 # Git ignore rules
 ├── 📄 requirements.txt           # Python dependencies
 └── 📁 src/                       # Source code
-    ├── 📄 __init__.py            # Main package init
+    |
     ├── 📁 core/                  # Core business logic
     │   ├── 📄 __init__.py        # Core package init
+    │   ├── 📄 ytsage_deno.py     # Deno integration
     │   ├── 📄 ytsage_downloader.py # Download functionality
     │   ├── 📄 ytsage_ffmpeg.py   # FFmpeg integration
     │   ├── 📄 ytsage_utils.py    # Utility functions
-    │   ├── 📄 ytsage_yt_dlp.py   # yt-dlp integration
+    │   └── 📄 ytsage_yt_dlp.py   # yt-dlp integration
-    │   └── 📄 ytsage_ffmpeg_updater.py   # FFmpeg updater
     ├── 📁 gui/                   # User interface components
     │   ├── 📄 __init__.py        # GUI package init
     │   ├── 📄 ytsage_gui_format_table.py # Format table functionality
@@ -392,6 +392,7 @@ YTSage/
     │       ├── 📄 ytsage_dialogs_base.py     # Basic dialogs
     │       ├── 📄 ytsage_dialogs_custom.py   # Custom functionality dialogs
     │       ├── 📄 ytsage_dialogs_ffmpeg.py   # FFmpeg-related dialogs
+    │       ├── 📄 ytsage_dialogs_history.py  # History dialogs
     │       ├── 📄 ytsage_dialogs_selection.py # Selection dialogs
     │       ├── 📄 ytsage_dialogs_settings.py  # Settings dialogs
     │       ├── 📄 ytsage_dialogs_update.py    # Update dialogs
@@ -400,6 +401,7 @@ YTSage/
         ├── 📄 __init__.py        # Utils package init
         ├── 📄 ytsage_config_manager.py # Configuration management
         ├── 📄 ytsage_constants.py # Application constants
+        ├── 📄 ytsage_history_manager.py # History management
         ├── 📄 ytsage_localization.py # Localization utilities
         └── 📄 ytsage_logger.py   # Logging utilities
 ```