fix: discord RPC on Linux, creating symlink between Discord and Freedom Loader at start if needed

refactor: app display in front end. To make difference more obvious between bundled and not
add: somes startup configuration for dev
2026-09-27 20:11:15 +02:00 · 2026-08-08 10:51:10 +02:00 · 2026-08-08 10:50:39 +02:00 · 2026-08-08 10:50:18 +02:00 · 2026-08-08 10:12:21 +02:00 · 2026-08-08 10:12:06 +02:00
62 changed files with 8551 additions and 2279 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -1,15 +1,24 @@
+# Dependencies
 /node_modules
-/downloads
+
+# Build Output Folder
 /dist
 /out
+/srpm-out

-/ressources/ffmpeg.exe
-/ressources/ffprobe.exe
-/ressources/deno.exe
-
-/theme/**
-
+# Config JSON File. Create it and fill it if you want to have dev only settings
 config/config.dev.json

-logs/*.json
-logs/*.log
+# IDE
+/.idea
+/.vscode
+
+# Linux executable
+ffmpeg
+ffprobe
+deno
+
+# Windows Executable
+ffmpeg.exe
+ffprobe.exe
+deno.exe
--- a/BINARIES.md
+++ b/BINARIES.md
@@ -0,0 +1,96 @@
+# External binaries
+
+This project depends on three external tools that are **not bundled in the repository**.  
+You must download them manually and place each binary in the correct folder before building or running the app locally.
+
+---
+
+## Required tools
+
+| Tool    | Role                                        |
+|---------|---------------------------------------------|
+| yt-dlp  | Video and audio download engine             |
+| ffmpeg  | Media encoding, transcoding, muxing         |
+| ffprobe | Media file analysis and metadata extraction |
+| deno    | JavaScript / TypeScript runtime             |
+
+---
+
+## Folder structure
+
+Place the binaries exactly as shown below.  
+Do not rename them — the application resolves them by these exact names.
+
+```
+resources/
+└── binaries/
+    ├── linux/
+    │   ├── yt-dlp
+    │   ├── ffmpeg
+    │   ├── ffprobe
+    │   └── deno
+    └── win-32/
+        ├── yt-dlp.exe
+        ├── ffmpeg.exe
+        ├── ffprobe.exe
+        └── deno.exe
+```
+
+---
+
+## Download links
+
+### yt-dlp
+
+| Platform | URL                                                                  |
+|----------|----------------------------------------------------------------------|
+| Windows  | https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp.exe |
+| Linux    | https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp     |
+
+Rename the downloaded file to `yt-dlp` (or `yt-dlp.exe` on Windows).
+
+---
+
+### ffmpeg and ffprobe
+
+**Windows and Linux** — both binaries are included in the same archive.
+
+| Platform    | URL                                                                                                       |
+|-------------|-----------------------------------------------------------------------------------------------------------|
+| Windows x64 | https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-win64-gpl.zip         |
+| Linux x64   | https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-linux64-gpl.tar.xz    |
+| Linux arm64 | https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-linuxarm64-gpl.tar.xz |
+
+Extract the archive and copy `ffmpeg` and `ffprobe` from the `bin/` subfolder.
+
+---
+
+### deno
+
+| Platform    | URL                                                                                          |
+|-------------|----------------------------------------------------------------------------------------------|
+| Windows x64 | https://github.com/denoland/deno/releases/latest/download/deno-x86_64-pc-windows-msvc.zip    |
+| Linux x64   | https://github.com/denoland/deno/releases/latest/download/deno-x86_64-unknown-linux-gnu.zip  |
+| Linux arm64 | https://github.com/denoland/deno/releases/latest/download/deno-aarch64-unknown-linux-gnu.zip |
+
+Each archive contains a single binary. Rename it to `deno` (or `deno.exe` on Windows).
+
+---
+
+## Permissions (Linux )
+
+After placing the binaries, make them executable:
+
+```bash
+chmod +x resources/binaries/linux/yt-dlp
+chmod +x resources/binaries/linux/ffmpeg
+chmod +x resources/binaries/linux/ffprobe
+chmod +x resources/binaries/linux/deno
+```
+
+---
+
+## Notes
+
+- These binaries are excluded from version control via `.gitignore`.
+- Always use the latest stable release of each tool.
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -105,7 +105,7 @@ Freedom-Loader/
 │   ├── controller/   # Business logic
 │   └── helpers/      # Utility functions
 ├── public/           # Frontend (HTML, CSS, JS)
-└── ressources/       # Binaries (yt-dlp, ffmpeg, etc.)
+└── resources/       # Binaries (yt-dlp, ffmpeg, etc.)
 ```

 ---
--- a/README.md
+++ b/README.md
@@ -5,9 +5,9 @@
    alt="Banner"
    style="width: 50%;"/></a>

-### **A clean, open-source multimedia downloader for Windows**
+### **A clean, open-source multimedia downloader for Windows and Linux**

-[![Release](https://img.shields.io/badge/Release-1.5.0-blue?style=for-the-badge)](https://github.com/MasterAcnolo/Freedom-Loader/releases)
+[![Release](https://img.shields.io/github/v/release/MasterAcnolo/Freedom-Loader?style=for-the-badge&color=blue)](https://github.com/MasterAcnolo/Freedom-Loader/releases)
 [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-red.svg?style=for-the-badge)](https://www.gnu.org/licenses/gpl-3.0)
 [![Website](https://img.shields.io/badge/Website-Visit-404040?style=for-the-badge)](https://masteracnolo.github.io/Freedom-Loader-Site/)
 [![Workshop](https://img.shields.io/badge/Worshop-Visit-0E05A1?style=for-the-badge)](https://masteracnolo.github.io/Freedom-Loader-Workshop/)
@@ -26,7 +26,7 @@ The primary goal is to make media downloading accessible to users who want offli
 ### See related repo:

 - **[Website](https://masteracnolo.github.io/Freedom-Loader-Site/)** - Official project website and documentation
- **[Workshop](https://masteracnolo.github.io/Freedom-Loader-Workshop/)** - Theme creation tool and theme browser
+- **[Workshop](https://github.com/MasterAcnolo/Freedom-Loader-Workshop)** - Theme creation tool and theme browser

 ## Table of Contents

@@ -61,9 +61,9 @@ The primary goal is to make media downloading accessible to users who want offli
 ### User Interface

 - **Custom window controls** - Frameless window with custom top bar (optional)
- **Custom themes** — ZIP-based theme system with live preview
- **Theme Workshop** — web-based theme creator and browser
- **Toast notifications** — in-app feedback system
+- **Custom themes** - ZIP-based theme system with live preview
+- **Theme Workshop** - web-based theme creator and browser
+- **Toast notifications** - in-app feedback system
 - **Real-time progress tracking** - Live download progress bar with network speed indicator
 - **Server-Sent Events (SSE)** - Non-blocking progress updates via event streaming
 - **Settings panel** - In-app configuration interface with live updates
@@ -80,41 +80,89 @@ The primary goal is to make media downloading accessible to users who want offli
 - **Rate limiting** - Express-based request throttling to prevent server overload
 - **Graceful shutdown** - Proper cleanup of servers, logs, and RPC connections
 - **System notifications** - Windows notifications on download completion (clickable to open folder)
- **Splash screen** — animated loading screen on startup
- **Stop download** — ability to cancel in-progress downloads
- **Playlist folders** — dedicated folder creation per playlist
+- **Splash screen** - animated loading screen on startup
+- **Stop download** - ability to cancel in-progress downloads
+- **Playlist folders** - dedicated folder creation per playlist
+- **Keep Playlist Order** - Add an Index before the title, could be useful for an album for example.

 ## Installation

+[![Fedora Copr](https://img.shields.io/badge/Fedora-Copr-294172?style=for-the-badge&logo=fedora&logoColor=white)](https://copr.fedorainfracloud.org/coprs/masteracnolo/freedom-loader/)
+[![Debian/Ubuntu](https://img.shields.io/badge/.deb-Debian%2FUbuntu-A81D33?style=for-the-badge&logo=debian&logoColor=white)](https://github.com/MasterAcnolo/Freedom-Loader/releases)
+[![Snap Store](https://img.shields.io/badge/Snap-Store-82BEA0?style=for-the-badge&logo=snapcraft&logoColor=white)](https://snapcraft.io/freedom-loader)
+[![AppImage](https://img.shields.io/badge/AppImage-Universal-1E88E5?style=for-the-badge&logo=linux&logoColor=white)](https://github.com/MasterAcnolo/Freedom-Loader/releases)
+
 ### Requirements

- **Operating System**: Windows 10 or later
- **Browser**: Mozilla Firefox (required for cookie extraction)
-  - [Download Firefox](https://www.firefox.com)
+- **Windows**: Windows 10 or later
+- **Linux**: any modern x86_64 distribution
+- **Browser**: Mozilla Firefox ([download](https://www.firefox.com)) required for cookie extraction, on both platforms

-### Standard Installation
+### Windows

-1. Download the latest release from the [Releases page](https://github.com/MasterAcnolo/Freedom-Loader/releases)
-2. Run the downloaded `.exe` installer
-3. If Windows Defender shows a warning, click "More info" then "Run anyway"
-4. Follow the installation wizard
+1. Download the latest `.exe` from the [Releases page](https://github.com/MasterAcnolo/Freedom-Loader/releases)
+2. Run the installer (click "More info" → "Run anyway" if Windows Defender warns you)
+3. Follow the installation wizard
+
+### Linux
+
+#### Fedora (via Copr - recommended)
+
+Installing via Copr lets `dnf` handle future updates automatically:
+
+```bash
+sudo dnf copr enable masteracnolo/freedom-loader
+sudo dnf install freedom-loader
+```
+
+#### Debian / Ubuntu (.deb)
+
+```bash
+# Download the latest .deb from the Releases page, then:
+sudo apt install ./freedom-loader_1.x.x_amd64.deb
+```
+
+#### Snap (any distro with snapd)
+
+```bash
+sudo snap install freedom-loader
+```
+
+#### RPM (Fedora/RHEL/openSUSE, without Copr)
+
+```bash
+# Download the latest .rpm from the Releases page, then:
+sudo dnf install ./freedom-loader-1.x.y.x86_64.rpm
+```
+
+#### AppImage (any distro, no installation needed)
+
+```bash
+# Download the latest .AppImage from the Releases page, then:
+chmod +x Freedom-Loader-1.x.y.AppImage
+./Freedom-Loader-1.x.y.AppImage
+```
+
+Once installed via any method, launch Freedom Loader from your application menu, or from a terminal with:
+```bash
+freedom-loader
+```

 ### File Locations

-Downloaded files are stored in:
-```
-C:\Users\[USERNAME]\Downloads\Freedom Loader
-```
-> [!NOTE]
-> *You can change it whenever you want. Just click the "Edit" button in the UI.*
+|               | Windows                                                 | Linux                                |
+|---------------|---------------------------------------------------------|--------------------------------------|
+| **Downloads** | `C:\Users\[USERNAME]\Downloads\Freedom Loader`          | `~/Downloads/Freedom Loader`         |
+| **Logs**      | `C:\Users\[USERNAME]\AppData\Local\FreedomLoader\logs\` | `~/.local/share/FreedomLoader/logs/` |

-Application logs can be found at:
-```
-C:\Users\[USERNAME]\AppData\Local\FreedomLoader\logs\
-```
+> [!NOTE]
+> The download folder can be changed anytime via the "Edit" button in the UI, on both platforms.

 ## Usage

+> [!TIP] 
+> On Linux, you can start Freedom Loader using `freedom-loader` command
+
 ### Basic Download

 1. Launch Freedom Loader
@@ -131,14 +179,15 @@ The application supports various configuration options:
 - Custom download directory selection
 - Discord Rich Presence activation
 - Theme customization
- Log level configuration
+- Log level
+- And somes to see in the list [Configuration Options](#configuration-options) available

 ### Troubleshooting

 If you encounter issues:

 1. Restart the application
-2. Check the logs in `AppData\Local\FreedomLoader\logs\`
+2. Check the logs in `AppData\Local\FreedomLoader\logs\` or `~/.local/share/FreedomLoader/logs`
 3. Open the developer console: `CTRL + SHIFT + I` → "Toggle Developer Tools"
 4. Create an issue on GitHub with logs and reproduction steps

@@ -164,8 +213,15 @@ If you encounter issues:
 Freedom Loader can be configured either through the settings panel in the UI or by directly editing the `config.json` file located in the application data directory.

 ### Configuration File Location
+
+#### Windows
 ```
-C:\Users\[USERNAME]\AppData\Roaming\FreedomLoader\config.json
+%APPDATA%\Freedom Loader\config.json
+```
+
+#### Linux
+```
+~/.config/Freedom\ Loader/config.json
 ```

 ### Available Options
@@ -179,31 +235,39 @@ C:\Users\[USERNAME]\AppData\Roaming\FreedomLoader\config.json
  "addMetadata": true,
  "verboseLogs": false,
  "autoDownloadPlaylist": true,
+  "keepPlaylistOrder": false,
+  "createPlaylistFolders": true,
  "customCodec": "h264",
  "logSystem": true,
  "outputTitleCheck": true,
  "downloadSystem": true,
-  "notifySystem": true
+  "notifySystem": true,
+  "enableHardwareAcceleration": true,
+  "theme": "dark" 
 }
 ```

 ### Configuration Options

-| Option | Type | Default | Description |
-|--------|------|---------|-------------|
-| `autoUpdate` | boolean | `true` | Enable automatic application updates |
-| `discordRPC` | boolean | `true` | Enable Discord Rich Presence integration |
-| `customTopBar` | boolean | `true` | Use custom application top bar |
-| `autoCheckInfo` | boolean | `true` | Automatically fetch video information on URL paste |
-| `addThumbnail` | boolean | `true` | Embed thumbnail in downloaded audio files |
-| `addMetadata` | boolean | `true` | Add metadata tags to downloaded files |
-| `verboseLogs` | boolean | `false` | Enable detailed logging for debugging |
-| `autoDownloadPlaylist` | boolean | `true` | Automatically download entire playlists |
-| `customCodec` | string | `"h264"` | Video codec for encoding (supported: h264, h265, vp9, av1) |
-| `logSystem` | boolean | `true` | Enable application logging |
-| `outputTitleCheck` | boolean | `true` | Verify output file titles |
-| `downloadSystem` | boolean | `true` | Enable download system |
-| `notifySystem` | boolean | `true` | Enable system notifications |
+| Option                       | Type    | Default  | Description                                                |
+|------------------------------|---------|----------|------------------------------------------------------------|
+| `autoUpdate`                 | boolean | `true`   | Enable automatic application updates                       |
+| `discordRPC`                 | boolean | `true`   | Enable Discord Rich Presence integration                   |
+| `customTopBar`               | boolean | `true`   | Use custom application top bar                             |
+| `autoCheckInfo`              | boolean | `true`   | Automatically fetch video information on URL paste         |
+| `addThumbnail`               | boolean | `true`   | Embed thumbnail in downloaded audio files                  |
+| `addMetadata`                | boolean | `true`   | Add metadata tags to downloaded files                      |
+| `verboseLogs`                | boolean | `false`  | Enable detailed logging for debugging                      |
+| `autoDownloadPlaylist`       | boolean | `true`   | Automatically download entire playlists                    |
+| `keepPlaylistOrder`          | boolean | `false`  | Add index before title, usefull for album                  |
+| `createPlaylistFolders`      | boolean | `true`   | Automatically create a folder for a playlist               |
+| `customCodec`                | string  | `"h264"` | Video codec for encoding (supported: h264, h265, vp9, av1) |
+| `logSystem`                  | boolean | `true`   | Enable application logging                                 |
+| `outputTitleCheck`           | boolean | `true`   | Verify output file titles                                  |
+| `downloadSystem`             | boolean | `true`   | Enable download system                                     |
+| `notifySystem`               | boolean | `true`   | Enable system notifications                                |
+| `enableHardwareAcceleration` | boolean | `true`   | Enable Hardware Acceleration                               |
+| `theme`                      | string  | `dark`   | Current Theme Name                                         |

 ### Supported Codecs

@@ -216,7 +280,7 @@ C:\Users\[USERNAME]\AppData\Roaming\FreedomLoader\config.json
 - `theora` - Theora (legacy open codec)

 > [!NOTE]
-> Configuration changes may require an application restart to take effect.
+> Some configuration changes may require an application restart to take effect.

 ## Project Structure

@@ -233,12 +297,17 @@ Freedom-Loader/
 │   ├── windowManager.js
 │   └── ytDlpUpdater.js
 ├── build/                   # Build resources and assets
+│   ├── app-icon.ico
+│   ├── app-icon.png
+│   ├── banner.png
+│   └── ...
 ├── config/                  # Configuration files
 │   ├── config.default.json
-│   └── config.dev.json
+│   └── config.dev.json      # Configuration Used when i dev mode       
+├── dist/                    # Compiled executables (.exe, .AppImage, .deb, .rpm, .snap)
 ├── public/                  # Frontend assets and UI
 │   ├── index.html
-│   ├── splash.html
+│   ├── splash.html          # Splash Screen (Start of the application)
 │   ├── assets/
 │   │   ├── icon/            # Application icons
 │   │   └── logo/            # Logo assets
@@ -257,19 +326,8 @@ Freedom-Loader/
 │       ├── styles.css
 │       ├── variables.css
 │       ├── components/      # Component-specific styles
-│       │   ├── checkbox.css
-│       │   ├── editpathbutton.css
-│       │   ├── loader.css
-│       │   ├── progressBar.css
-│       │   └── toast.css
 │       └── layout/          # Layout styles
-│           ├── container.css
-│           ├── form.css
-│           ├── header.css
-│           ├── settingsPanel.css
-│           ├── topbar.css
-│           └── videoinfo.css
-├── ressources/              # Internal resources (binaries)
+├── resources/               # Internal resources (binaries : yt-dlp, ffmpeg...)
 ├── server/                  # Express backend server
 │   ├── logger.js
 │   ├── server.js
@@ -293,16 +351,16 @@ Freedom-Loader/
 ├── theme/                   # Theme system
 │   ├── template.theme.json  # Theme template
 │   ├── Dark/                # Default dark theme
-│   │   └── dark.theme.json
 │   └── Light/               # Default light theme
-│       └── light.theme.json
-├── main.js                  # Electron main process entry point
-├── preload.js               # Electron preload script (IPC bridge)
-├── config.js                # Global configuration loader
-├── package.json             # Project metadata and dependencies
+├── BINARIES.md              # External dependencies & binaries documentation
 ├── CODE_OF_CONDUCT.md       # Community guidelines
+├── config.js                # Global configuration loader
 ├── CONTRIBUTING.md          # Contribution guidelines
+├── jest.config.js           # Unit testing configuration
 ├── LICENSE                  # GPLv3 license
+├── main.js                  # Electron main process entry point
+├── package.json             # Project metadata and dependencies
+├── preload.js               # Electron preload script (IPC bridge)
 └── README.md                # This file
 ```

@@ -329,7 +387,7 @@ Freedom Loader includes a web-based theme creator available at [Freedom Loader W
 ### Installing a custom theme
 1. Download a `.zip` theme file
 2. Drop it in the `theme/` folder of your Freedom Loader installation
-3. Restart the app — your theme appears in the settings panel
+3. Restart the app - your theme appears in the settings panel

 ## Technology Stack

@@ -380,7 +438,7 @@ npm run build
 This project relies on several external binaries.  
 Some of them are **not included** in the public repository and must be added manually.

-You must download the required binaries and place them in the `ressources` folder, using the exact filenames listed below.
+You must download the required binaries and place them in the `resources` folder, using the exact filenames listed below.

 #### Required binaries

@@ -401,7 +459,7 @@ You must download the required binaries and place them in the `ressources` folde
 Final folder structure:

 ```
-ressources/
+resources/
 ├── deno.exe
 ├── ffmpeg.exe
 ├── ffprobe.exe
@@ -417,45 +475,12 @@ ressources/
 - Write clear commit messages
 - Test thoroughly before submitting changes
 - Update documentation when adding features
- Maintain compatibility with Windows 10+
+- Maintain compatibility with Windows 10+ and Linux

 ## Roadmap

 See the most recent Roadmap [Here](https://masteracnolo.github.io/Freedom-Loader-Site/Roadmap).

-### Completed
-
- [x] ~~Website and documentation~~
- [x] ~~Automatic YT-DLP updates~~
- [x] ~~Automatic application updates~~
- [x] ~~Enhanced download status display~~
- [x] ~~Video chapter extraction~~
- [x] ~~Custom output path selection~~
- [x] ~~Custom codec selection~~
- [x] ~~Settings Panel with toggle switch for features.~~
- [x] ~~Custom theme system (ZIP format) ~~
- [x] ~~Theme Workshop (web tool)~~
- [x] ~~Splash screen~~
- [x] ~~Download stop button~~
- [x] ~~Config saved in AppData (preserved on update)~~
-
-### In Progress
-
- [ ] Additional format support (WebM, OGG, etc.)
- [ ] Chrome/Edge cookie support
- [ ] Improved multi-site support
-
-### Planned
-
- [ ] Subtitle download and embedding
- [ ] Multiple language support
- [ ] Partial video downloads
- [ ] Custom file naming patterns
- [ ] Parallel downloads
- [ ] Automatic sponsor detection (SponsorBlock integration)
- [ ] Download history
- [ ] Linux version
-
 ## Contributing

 Contributions are welcome and appreciated. This project benefits from community involvement.
@@ -472,7 +497,7 @@ Use the GitHub Issues system and include:
 - Clear description of the issue
 - Steps to reproduce
 - Expected vs actual behavior
- Relevant logs from `AppData\Local\FreedomLoader\logs\`
+- Relevant logs from `AppData\Local\FreedomLoader\logs\` or `~/.local/share/FreedomLoader/logs/`
 - Screenshots if applicable

 ### Feature Requests
@@ -512,7 +537,7 @@ You are free to use, modify, and redistribute this software under the terms of t

 - [yt-dlp](https://github.com/yt-dlp/yt-dlp) for the robust download engine
 - [FFmpeg](https://ffmpeg.org/) for media processing capabilities
- [Deno](https://deno.com/) for helping me bypassing challenges
+- [Deno](https://deno.com/) for helping me to bypass challenges
 - [Electron](https://www.electronjs.org/) for the desktop application framework
 - The open-source community for continuous support and contributions
 - [@SpicyFire21](https://github.com/SpicyFire21) to be the spiciest one
@@ -528,4 +553,4 @@ You are free to use, modify, and redistribute this software under the terms of t

 [Website](https://masteracnolo.github.io/Freedom-Loader-Site/) • [Download](https://github.com/MasterAcnolo/Freedom-Loader/releases) • [Documentation](https://masteracnolo.github.io/Freedom-Loader-Site/wiki) • [Report Bug](https://github.com/MasterAcnolo/Freedom-Loader/issues)

-</div>
+</div>
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -2,15 +2,14 @@

 ## Supported Versions

-We actively maintain and provide security updates for the following versions of Freedom Loader:
+Freedom Loader follows a **latest-only** support model. Security fixes are applied to the current release only — no backports to older versions.

-| Version | Supported          |
-| ------- | ------------------ |
-| 1.4.x   | :white_check_mark: |
-| 1.3.x   | :white_check_mark: |
-| < 1.3.0 | :x:                |
+| Version       | Supported          |
+| ------------- | ------------------ |
+| Latest stable | :white_check_mark: |
+| Older versions | :x:               |

-**Note**: We recommend always using the latest version to benefit from the most recent security patches and features.
+I recommend always running the latest version. The built-in auto-updater will notify you when a new release is available. Older versions will not receive security patches regardless of severity.

 ## Reporting a Vulnerability

@@ -32,37 +31,40 @@ Instead, please report security issues privately by:

 ### What to Expect

- **Acknowledgment**: We will acknowledge receipt of your report within 48 hours
- **Assessment**: We will assess the vulnerability and determine its severity
- **Updates**: We will keep you informed of our progress
- **Resolution**: We aim to release a fix within 7-14 days for critical vulnerabilities
- **Credit**: We will credit you in the release notes (unless you prefer to remain anonymous)
+- **Acknowledgment**: I will acknowledge receipt of your report within 48 hours
+- **Assessment**: I will assess the vulnerability and determine its severity
+- **Updates**: I will keep you informed of our progress
+- **Resolution**: I aim to release a fix within 7-14 days for critical vulnerabilities
+- **Credit**: I will credit you in the release notes (unless you prefer to remain anonymous)

 ## Security Best Practices for Users

-When using Freedom Loader, we recommend:
+When using Freedom Loader, I recommend:

 ### General Security

- **Keep Updated**: Always use the latest version of Freedom Loader
- **Official Sources**: Download only from official releases on [GitHub](https://github.com/MasterAcnolo/Freedom-Loader/releases)
- **Verify Downloads**: Check that installers are properly signed (Windows SmartScreen may show warnings for new releases)
+- **Keep Updated**: Always use the latest version of Freedom Loader — older versions receive no security patches
+- **Official Sources**: Download only from official sources:
+    - [GitHub Releases](https://github.com/MasterAcnolo/Freedom-Loader/releases)
+    - [Fedora COPR](https://copr.fedorainfracloud.org/coprs/masteracnolo/freedom-loader/)
+    - [Snap Store](https://snapcraft.io/freedom-loader)
+- **Verify Downloads**: Check that installers are from one of the above sources
 - **Antivirus**: Keep your antivirus software up to date

 ### Configuration Security

- **Download Path**: Only set download paths within your user directory (`C:\Users\[USERNAME]\...`)
- **Cookies**: Be aware that Firefox cookies are used for authentication—keep Firefox secure
- **Logs**: Logs may contain sensitive information—avoid sharing them publicly without review
+- **Download Path**: Only set download paths within your user directory
+- **Cookies**: Be aware that Firefox cookies are used for authentication — keep Firefox secure
+- **Logs**: Logs may contain sensitive information such as URLs or local paths — avoid sharing them publicly without review

 ### Privacy Considerations

 Freedom Loader respects your privacy:

- **No Data Collection**: We don't collect, store, or transmit your personal data
+- **No Data Collection**: I don't collect, store, or transmit your personal data
 - **No Telemetry**: No usage tracking or analytics
 - **Local Operation**: All downloads are processed locally on your machine
- **Optional Features**: Discord RPC is optional and can be disabled
+- **Optional Features**: Discord RPC is optional and can be disabled in settings

 ## Known Security Considerations

@@ -71,16 +73,16 @@ Freedom Loader respects your privacy:
 Freedom Loader accesses Firefox cookies to download protected content. This is:

 - **By Design**: Required for age-restricted or member-only content
- **Local Only**: Cookies are read locally and never transmitted
- **User Controlled**: You can control what content you download
+- **Local Only**: Cookies are read locally and never transmitted outside your machine
+- **User Controlled**: You control what content you download

 ### Native Dependencies

-Freedom Loader bundles native binaries:
+Freedom Loader bundles the following official binaries:

- **yt-dlp**: Official builds from [yt-dlp/yt-dlp](https://github.com/yt-dlp/yt-dlp)
+- **yt-dlp**: Official builds from [yt-dlp/yt-dlp](https://github.com/yt-dlp/yt-dlp) — auto-updated on each launch
 - **FFmpeg**: Official builds from [FFmpeg.org](https://ffmpeg.org/)
- **Deno**: Official builds from [Deno.land](https://deno.land/)
+- **Deno**: Official builds from [Deno.com](https://deno.com/)

 These dependencies are verified and updated regularly.

@@ -91,13 +93,13 @@ New releases may trigger Windows Defender warnings because:
 - The application is not yet widely distributed
 - Code signing certificates are expensive for open-source projects

-This is expected behavior for new releases. The warning will decrease as more users download the software.
+This is expected behavior for new releases and will diminish as more users download the software.

 ## Vulnerability Disclosure Policy

 ### Our Commitment

-We are committed to:
+I am committed to:

 - Responding promptly to security reports
 - Working with security researchers to verify and address issues
@@ -107,9 +109,9 @@ We are committed to:
 ### Disclosure Timeline

 1. **Day 0**: Vulnerability reported privately
-2. **Day 1-2**: Acknowledgment sent to reporter
-3. **Day 3-7**: Vulnerability assessed and fix developed
-4. **Day 7-14**: Fix released (critical vulnerabilities prioritized)
+2. **Day 1–2**: Acknowledgment sent to reporter
+3. **Day 3–7**: Vulnerability assessed and fix developed
+4. **Day 7–14**: Fix released (critical vulnerabilities prioritized)
 5. **Day 14+**: Public disclosure (coordinated with reporter)

 ### Scope
@@ -129,16 +131,16 @@ The following are generally not considered security vulnerabilities:
 - Issues requiring physical access to the user's machine
 - Social engineering attacks
 - Denial of service against third-party services
- Issues in third-party dependencies (report to upstream projects)
- Missing security headers on local HTTP server (no remote access)
+- Issues in third-party dependencies (report to upstream projects directly)
+- Missing security headers on the local HTTP server (not exposed remotely)

 ## Security Updates

 Security updates are released as:

- **Patch Releases**: For critical security fixes (e.g., 1.4.1 → 1.4.2)
+- **Patch Releases**: For critical security fixes (e.g., 1.6.0 → 1.6.1)
 - **Automatic Updates**: Users are notified via the built-in update system
- **Release Notes**: Security fixes are clearly marked in changelog
+- **Release Notes**: Security fixes are clearly marked in the changelog

 ## Additional Resources

@@ -150,6 +152,7 @@ Security updates are released as:

 For security-related questions or concerns:

+- **Email**: masteracnolo25@gmail.com
 - **GitHub**: [@MasterAcnolo](https://github.com/MasterAcnolo)

 ---
--- a/app/autoUpdater.js
+++ b/app/autoUpdater.js
@@ -1,11 +1,42 @@
+/**
+ * Electron auto-update system using electron-updater.
+ *
+ * Handles:
+ * - update detection
+ * - user confirmation dialogs
+ * - download progress streaming to renderer
+ * - application restart and installation
+ */
+
 const { autoUpdater } = require("electron-updater");
 const { dialog } = require("electron");
 const { logger } = require("../server/logger");

+/**
+ * Configures autoUpdater behavior:
+ * - disables automatic download
+ * - disables automatic installation on quit
+ * (manual user-controlled update flow)
+ */
 autoUpdater.autoDownload = false;
 autoUpdater.autoInstallOnAppQuit = false;

+/**
+ * Initializes application auto-update lifecycle.
+ *
+ * Registers update event listeners and binds them to:
+ * - UI dialogs (Electron dialog)
+ * - renderer communication (webContents)
+ * - download/install flow control
+ *
+ * @param {BrowserWindow} mainWindow - main Electron window instance
+ */
 function initAutoUpdater(mainWindow) {
+
+  /**
+   * Triggered when a new version is detected.
+   * Prompts user to install or defer update.
+   */
  autoUpdater.on("update-available", async (info) => {
    logger.info(`Update available: ${info.version}`);

@@ -20,7 +51,7 @@ function initAutoUpdater(mainWindow) {
    });

    if (response === 0) {
-      autoUpdater.downloadUpdate();
+      await autoUpdater.downloadUpdate();
    } else {
      mainWindow?.webContents.executeJavaScript(
        `window.showUpdateBadge && window.showUpdateBadge("${info.version}")`
@@ -28,6 +59,10 @@ function initAutoUpdater(mainWindow) {
    }
  });

+  /**
+   * Streams update download progress to renderer process.
+   * Used to update UI progress bar and status indicators.
+   */
  autoUpdater.on("download-progress", (progress) => {
    logger.info(`Download progress: ${Math.round(progress.percent)}%`);
    mainWindow?.webContents.send("update-progress", {
@@ -36,6 +71,10 @@ function initAutoUpdater(mainWindow) {
    });
  });

+  /**
+   * Triggered when update has been fully downloaded.
+   * Prompts user to restart application and install update.
+   */
  autoUpdater.on("update-downloaded", async (info) => {
    logger.info(`Update downloaded: ${info.version}`);

@@ -52,15 +91,43 @@ function initAutoUpdater(mainWindow) {
    if (response === 0) autoUpdater.quitAndInstall();
  });

+  /**
+   * Handles update system errors.
+   * Logs failure and displays an error dialog to user.
+   */
  autoUpdater.on("error", (err) => {
-    logger.error("Auto update error:", err.message);
-    dialog.showErrorBox("Update Error", err.message);
+    const msg = err?.message || "";
+
+    /**
+     * If no update is available, I put this because there is no Linux version before 1.6.0
+     * @type {boolean}
+     */
+    const isNoUpdateAvailable = /404/.test(msg) || /Cannot find latest.*\.yml/i.test(msg);
+
+    if (isNoUpdateAvailable) {
+      logger.warn("Auto update: no update metadata found (probably no previous release), ignoring", msg);
+      return;
+    }
+
+    logger.error("Auto update error:", msg);
  });

  checkForUpdates();
 }

+/**
+ * Manually triggers update check on startup.
+ * Separated from init for reusability and testability.
+ */
 async function checkForUpdates() {
+
+  if (process.env.SNAP) {
+    logger.info("Running as Snap, update managed by snapd, skipping electron-updater");
+    return;
+  }
+
+  if (!require("electron").app.isPackaged) return ;
+
  try {
    await autoUpdater.checkForUpdates();
  } catch (err) {
@@ -68,6 +135,10 @@ async function checkForUpdates() {
  }
 }

+/**
+ * Manually triggers update download.
+ * Used when user accepts update prompt.
+ */
 async function downloadUpdate() {
  try {
    await autoUpdater.downloadUpdate();
@@ -76,6 +147,9 @@ async function downloadUpdate() {
  }
 }

+/**
+ * Immediately quits application and installs downloaded update.
+ */
 function installUpdate() {
  autoUpdater.quitAndInstall();
 }
--- a/app/dependencyCheck.js
+++ b/app/dependencyCheck.js
@@ -2,26 +2,61 @@ const fs = require("fs");
 const { app, dialog } = require("electron");
 const { logger } = require("../server/logger");

+/**
+ * Verifies that all required native binaries exist before the app starts.
+ *
+ * This includes:
+ * - yt-dlp (download engine)
+ * - ffmpeg (media processing)
+ * - ffprobe (media inspection)
+ * - deno (JS runtime used by yt-dlp hooks)
+ *
+ * If any dependency is missing:
+ * - logs the error
+ * - shows a blocking Electron error dialog
+ * - exits the application
+ *
+ * @returns {boolean} true if all dependencies are present, false otherwise
+ */
 function checkNativeDependencies() {
+  /**
+   * Native dependency paths are resolved at runtime from the server helpers.
+   * This ensures correct resolution in both dev and packaged builds.
+   */
  const { binaryPaths } = require("../server/helpers/path.helpers");

+  const isWindows = process.platform === "win32";
+
+  const addExe = isWindows ? ".exe" : "";
+
+  /**
+   * List of required external executables used by the application runtime.
+   * Each entry defines a binary name and its resolved absolute path.
+   */
  const deps = [
-    { name: "yt-dlp.exe",  path: binaryPaths.ytDlp },
-    { name: "ffmpeg.exe",  path: binaryPaths.ffmpeg },
-    { name: "ffprobe.exe", path: binaryPaths.ffprobe },
-    { name: "deno.exe",    path: binaryPaths.deno },
+    { name: `yt-dlp${addExe}`,  path: binaryPaths.ytDlp },
+    { name: `ffmpeg${addExe}`,  path: binaryPaths.ffmpeg },
+    { name: `ffprobe${addExe}`, path: binaryPaths.ffprobe },
+    { name: `deno${addExe}`,    path: binaryPaths.deno },
  ];

  const missing = deps.filter(d => !fs.existsSync(d.path));
  if (missing.length === 0) return true;

+  /**
+   * Human-readable list of missing binaries for logging and user dialog display.
+   */
  const list = missing.map(d => d.name).join(", ");
  logger.error(`Missing dependencies: ${list}`);

+  /**
+   * Defers error dialog until Electron app is fully initialized.
+   * Required to safely display modal dialogs before quit.
+   */
  app.whenReady().then(() => {
    dialog.showErrorBox(
      "Missing dependencies",
-      `The following files are missing in the 'ressources' folder:\n${list}\n\nThe application will now exit. Try to reinstall.`
+      `The following files are missing in the 'resources' folder:\n${list}\n\nThe application will now exit. Try to reinstall.`
    );
    app.quit();
  });
--- a/app/discordRPC.js
+++ b/app/discordRPC.js
@@ -1,13 +1,93 @@
 const config = require('../config');
 const RPC = require("discord-rpc");
 const { logger } = require("../server/logger");
+const fs = require("fs");
+const path = require("path");

+/**
+ * Discord Application Client ID used to authenticate the RPC connection.
+ * Comes from the application configuration.
+ */
 const clientId = `${config.DiscordRPCID}`;
+
+/**
+ * Discord RPC client instance using IPC transport.
+ * Maintains a persistent connection with Discord desktop client.
+ */
 const rpc = new RPC.Client({ transport: "ipc" });

+/**
+ * Optional interval reference used for future RPC refresh logic.
+ * Currently reserved for potential periodic activity updates.
+ */
 let intervalId;

+/**
+ * Automagically fixes Discord RPC on Linux for Sandboxed versions (Flatpak & Snap).
+ * It creates a symlink from the sandbox IPC socket to the standard system location.
+ *
+ * @returns {void}
+ */
+function fixLinuxDiscordRPC() {
+  // Only execute on Linux
+  if (process.platform !== "linux") return;
+
+  /**
+   * Get the user's runtime directory (e.g., /run/user/1000).
+   * @type {string}
+   */
+  const xdgDir = process.env.XDG_RUNTIME_DIR || `/run/user/${process.getuid()}`;
+  const standardSocket = path.join(xdgDir, "discord-ipc-0");
+
+  // If the standard socket already exists (Native Discord), do nothing.
+  if (fs.existsSync(standardSocket)) return;
+
+  /**
+   * Paths for known sandboxed Discord IPC sockets.
+   */
+  const flatpakSocket = path.join(xdgDir, "app/com.discordapp.Discord/discord-ipc-0");
+  const snapSocket = path.join(xdgDir, "snap.discord/discord-ipc-0");
+
+  let targetSocket = null;
+
+  if (fs.existsSync(flatpakSocket)) {
+    targetSocket = flatpakSocket;
+  } else if (fs.existsSync(snapSocket)) {
+    targetSocket = snapSocket;
+  }
+
+  // If a sandboxed socket is found, create the symlink stealthily.
+  if (targetSocket) {
+    try {
+      fs.symlinkSync(targetSocket, standardSocket);
+      logger.info(`Discord RPC bridge created automatically targeting: ${targetSocket}`);
+    } catch (err) {
+      logger.warn(`Failed to create Discord RPC bridge: ${err.message}`);
+    }
+  }
+}
+
+/**
+ * Initializes Discord Rich Presence (RPC) connection.
+ *
+ * Responsibilities:
+ * - Connect to Discord via IPC transport
+ * - Set application presence (title, state, timestamps, assets)
+ * - Handle connection errors gracefully via logger
+ *
+ * Triggered once during application startup.
+ */
 function startRPC() {
+
+  /**
+   * Patch that create Simlinks for Linux environment;
+   */
+  fixLinuxDiscordRPC();
+
+  /**
+   * Rich Presence payload describing current application state
+   * shown in Discord user profile.
+   */
  rpc.on("ready", () => {
    const presence = {
      largeImageKey: "icon",
@@ -27,21 +107,35 @@ function startRPC() {
  });
 }

-async function stopRPC(){
+/**
+ * Gracefully stops Discord Rich Presence connection.
+ *
+ * Responsibilities:
+ * - Clear any running intervals
+ * - Remove current activity from Discord if connected
+ * - Destroy RPC transport connection
+ * - Handle cleanup errors safely
+ */
+async function stopRPC() {
+  if (rpc) {
    try {
      if (intervalId) clearInterval(intervalId);

-      if (rpc && rpc.transport) {
-        await rpc.clearActivity()
-        await rpc.destroy();
-      } else{
-        logger.error("Not Able to close RPC")
+      /**
+       * Ensures RPC connection AND the underlying socket exist
+       * before attempting to clear activity to prevent crash.
+       */
+      if (rpc.transport && rpc.transport.socket) {
+        await rpc.clearActivity();
      }
-      
+
+      await rpc.destroy();
+
    } catch (err) {
      logger.error("Error while closing the RPC:", err);
    }
  }
+}


 module.exports = { startRPC, stopRPC};
--- a/app/ipcHandlers.js
+++ b/app/ipcHandlers.js
@@ -1,6 +1,17 @@
+/**
+ * Electron IPC main process registry.
+ *
+ * Centralizes all IPC channels exposed to renderer process:
+ * - Application info (version, features)
+ * - Window controls (topbar actions)
+ * - File system interactions (theme, config, download paths)
+ * - UI state synchronization (progress bar)
+ *
+ * Acts as the bridge between renderer and privileged Node/Electron APIs.
+ */
+
 const { ipcMain, dialog, shell } = require("electron");
 const fs = require("fs");
-const path = require("path");
 const { logger, logDir } = require("../server/logger");
 const { configFeatures, featuresPath } = require("../config");
 const { getThemes, reloadThemes } = require("./themeManager");
@@ -8,6 +19,12 @@ const config = require("../config");
 const { validateDownloadPath, getDefaultDownloadPath } = require("./pathValidator");
 const { userThemesPath } = require("../server/helpers/path.helpers");

+/**
+ * Security whitelist for feature flags that can be modified at runtime.
+ *
+ * Prevents unauthorized or unexpected configuration keys from being persisted.
+ * Acts as a basic validation layer for IPC "set-feature".
+ */
 const FEATURE_WHITELIST = new Set([
  "autoUpdate",
  "discordRPC",
@@ -17,23 +34,53 @@ const FEATURE_WHITELIST = new Set([
  "addMetadata",
  "verboseLogs",
  "autoDownloadPlaylist",
+  "keepPlaylistOrder",
  "customCodec",
  "theme",
  "createPlaylistFolders",
-  "notifySystem"
+  "notifySystem",
+  "enableHardwareAcceleration"
 ]);

+/**
+ * Absolute path to the configuration file storing feature flags.
+ */
 const configFolderPath = featuresPath;

+/**
+ * Directory containing user-installed themes.
+ */
 const themeFolderPath = userThemesPath;

+/**
+ * Registers all IPC handlers and event listeners for Electron main process.
+ *
+ * This function wires renderer → main communication channels:
+ * - synchronous queries (handle)
+ * - fire-and-forget events (on)
+ *
+ * @param {Function} getMainWindow - Function returning current BrowserWindow instance
+ */
 function registerIpcHandlers(getMainWindow) {
    
-  // Infos générales
-  ipcMain.handle("version",  () => config.version);
+  /**
+   * Returns application version from config.
+   */
+  ipcMain.handle("version", () => config.version);
+
+  /**
+   * Returns runtime feature configuration object.
+   */
  ipcMain.handle("features", () => configFeatures);

-  // Sélection et validation de dossier
+  /**
+   * Opens native folder selection dialog and validates selected path.
+   *
+   * Ensures:
+   * - user cancellation is handled safely
+   * - selected path is validated against security rules
+   * - unsafe directories are rejected
+   */
  ipcMain.handle("select-download-folder", async () => {
    const result = await dialog.showOpenDialog({ properties: ["openDirectory"] });
    if (result.canceled) {
@@ -53,48 +100,108 @@ function registerIpcHandlers(getMainWindow) {
  ipcMain.handle("validate-download-path", (_, userPath) => validateDownloadPath(userPath));
  ipcMain.handle("get-default-download-path", () => getDefaultDownloadPath());

-  // Progression dans la taskbar
+  /**
+   * Updates Windows/macOS taskbar progress indicator.
+   *
+   * @param {number} percent - Progress value (0–100)
+   */
  ipcMain.on("set-progress", (_, percent) => {
    getMainWindow()?.setProgressBar(percent / 100);
  });

-  // TOPBAR ACTION
+  /**
+   * Window minimize request from renderer.
+   */
  ipcMain.on("window-minimize", () => getMainWindow()?.minimize());
+
+  /**
+   * Toggles maximize/unmaximize state of main window.
+   */
  ipcMain.on("window-maximize", () => {
    const win = getMainWindow();
    if (!win) return;
    win.isMaximized() ? win.unmaximize() : win.maximize();
  });
+
+  /**
+   * Closes the main application window.
+   */
  ipcMain.on("window-close", () => getMainWindow()?.close());


+  /**
+   * Opens Chromium DevTools in detached mode.
+   */
  ipcMain.on("open-devtools", () =>
    getMainWindow()?.webContents.openDevTools({ mode: "detach" })
  );
+
+  /**
+   * Opens application logs directory in system file explorer.
+   */
  ipcMain.on("open-logs",    () => logDir && shell.openPath(logDir));
+
+  /**
+   * Opens external website in default browser.
+   */
  ipcMain.on("open-website", () =>
    shell.openExternal("https://masteracnolo.github.io/Freedom-Loader-Site/")
  );
+
+  /**
+   * Opens official wiki page in external browser.
+   */
  ipcMain.on("open-wiki", () =>
    shell.openExternal("https://masteracnolo.github.io/Freedom-Loader-Site/wiki")
  );
+
+  /**
+   * Opens workshop page in external browser.
+   */
  ipcMain.on("open-workshop", () =>
    shell.openExternal("https://masteracnolo.github.io/Freedom-Loader-Workshop")
  );
+
+  /**
+   * Opens configuration folder in system file explorer.
+   */
  ipcMain.on("open-config", () => shell.openPath(configFolderPath));

  
  
-  // THEME
+  /**
+   * Retrieves available themes from filesystem.
+   */
  ipcMain.handle("get-themes", () => getThemes());

+  /**
+   * Opens theme directory in file explorer.
+   */
  ipcMain.on("open-theme", () => shell.openPath(themeFolderPath));

+  /**
+   * Reloads themes from disk dynamically.
+   */
  ipcMain.handle("reload-themes", async () => {
    return await reloadThemes();
  });

-  // Modification des features
+  /**
+   * Updates a runtime feature flag and persists it to disk.
+   *
+   * Flow:
+   * - Validates key against whitelist
+   * - Prevents unnecessary writes if value is unchanged
+   * - Updates in-memory config object
+   * - Persists to configuration file
+   *
+   * Security note:
+   * Only whitelisted keys can be modified via IPC to prevent config injection.
+   *
+   * @param {Electron.IpcMainEvent} event
+   * @param {{key: string, value: any}} payload
+   * @returns {boolean} success state
+   */
  ipcMain.handle("set-feature", (event, { key, value }) => {
        try {
          if (!FEATURE_WHITELIST.has(key)) {
--- a/app/pathValidator.js
+++ b/app/pathValidator.js
@@ -2,28 +2,86 @@ const fs = require("fs");
 const path = require("path");
 const { logger } = require("../server/logger");

+/**
+ * Cached resolved default download path.
+ * Initialized lazily on first access to avoid unnecessary imports.
+ */
 let _defaultPath = null;

+/**
+ * Returns the application's default download directory.
+ *
+ * This value is lazily loaded and cached after first call.
+ * The path originates from server configuration helpers.
+ *
+ * @returns {string} Absolute default download path
+ */
 function getDefaultDownloadPath() {
+
  if (!_defaultPath) {
+
+    /**
+     * Lazy-loaded dependency providing the configured default download folder.
+     * Required only when function is executed to reduce startup cost.
+     */
    const { defaultDownloadFolder } = require("../server/helpers/path.helpers");
+
    _defaultPath = defaultDownloadFolder;
+
  }
  return _defaultPath;
 }

+/**
+ * Validates and sanitizes a user-provided download path.
+ *
+ * Steps performed:
+ * - Resolves absolute real filesystem path
+ * - Normalizes symbolic links via realpathSync
+ * - Checks path safety rules (blocks system-critical directories)
+ * - Falls back to default path if input is empty
+ *
+ * @param {string} userPath - User-provided directory path
+ * @returns {string} Sanitized absolute path
+ * @throws Error If path is invalid, unsafe, or inaccessible
+ */
 function validateDownloadPath(userPath) {
+  
+  /**
+   * Lazy-loaded helper used to enforce safe directory constraints.
+   * Prevents writes to protected system folders.
+   */
  const { isSafePath } = require("../server/helpers/validation.helpers");

  if (!userPath) return getDefaultDownloadPath();

  try {
+
+    /**
+     * Resolves filesystem symlinks to ensure canonical absolute path.
+     * Required to prevent path traversal or alias bypass.
+     */
    const resolved = fs.realpathSync(path.resolve(userPath));
+
+    if (!fs.existsSync(resolved)) {
+      fs.mkdirSync(resolved, { recursive: true });
+      logger.info(`Download folder created: ${resolved}`);
+    }
+
+    const real = fs.realpathSync(resolved);
+
    if (!isSafePath(resolved)) {
      throw new Error("Path not allowed: system folders are blocked!");
    }
-    return resolved;
-  } catch (err) {
+
+    return real;
+  }
+  catch (err) {
+    
+    /**
+     * Handles invalid filesystem paths, permissions issues, or resolution failures.
+     * Logs diagnostic information before propagating a sanitized error.
+     */
    logger.error(`Invalid download path: ${userPath} — ${err.message}`);
    throw new Error(`Invalid or inaccessible path: ${err.message}`);
  }
--- a/app/splashManager.js
+++ b/app/splashManager.js
@@ -1,11 +1,28 @@
 const { BrowserWindow, app } = require("electron");
 const path = require("path");

+/**
+ * Reference to the splash screen BrowserWindow instance.
+ * Used during application startup before main window is ready.
+ */
 let splashWindow = null;

+/**
+ * Creates and displays the splash screen window.
+ *
+ * Responsibilities:
+ * - Initializes a frameless, always-on-top splash window
+ * - Loads splash HTML UI
+ * - Dynamically injects banner image depending on dev/production mode
+ * - Acts as startup visual feedback before main window loads
+ */
 function createSplashWindow() {

-const splashOptions = {
+  /**
+   * Configuration for splash screen BrowserWindow.
+   * Optimized for minimal UI and fast startup display.
+   */
+  const splashOptions = {
    width: 400,
    height: 300,
    frame: false,
@@ -19,13 +36,29 @@ const splashOptions = {
    },
  };

+  /**
+   * Instantiates the splash screen window.
+   */
  splashWindow = new BrowserWindow(splashOptions);

+  /**
+   * Absolute path to splash HTML file used as initial UI.
+   * Loaded locally from application bundle or project folder.
+   */
  const splashPath = path.join(__dirname, "../public/splash.html");
  splashWindow.loadFile(splashPath);

-  // Inject banner path for both dev and packaged app
+  /**
+   * Executes once splash HTML is fully loaded.
+   * Used here to inject dynamic assets (banner image path).
+   */
  splashWindow.webContents.on('did-finish-load', () => {
+
+    /**
+     * Resolves splash banner image path depending on runtime mode:
+     * - Production: bundled resources directory
+     * - Development: local build directory
+     */
    let bannerPath;
    
    // Check if app is packaged
@@ -36,12 +69,21 @@ const splashOptions = {
      bannerPath = path.join(__dirname, '../build/banner.png');
    }
    
+    /**
+     * Injects runtime image source into splash DOM.
+     * Uses file:// protocol to load local image safely in Electron context.
+     */
    splashWindow.webContents.executeJavaScript(`
      document.querySelector('img[alt="Freedom Loader"]').src = 'file:///${bannerPath.replace(/\\/g, '/')}';
    `);
  });
 }

+/**
+ * Closes and cleans up the splash screen window.
+ *
+ * Should be called once main window is ready to display.
+ */
 function closeSplashWindow() {
  if (splashWindow) {
    splashWindow.close();
@@ -49,6 +91,13 @@ function closeSplashWindow() {
  }
 }

+/**
+ * Updates splash screen progress indicator from main process.
+ *
+ * Sends a step value to renderer via injected JS function.
+ *
+ * @param {number} step - Current initialization step or progress value
+ */
 function setSplashProgress(step) {
  if (splashWindow) {
    splashWindow.webContents.executeJavaScript(`window.setProgress(${step})`);
--- a/app/themeManager.js
+++ b/app/themeManager.js
@@ -1,14 +1,48 @@
+/**
+ * Theme loading and parsing system.
+ *
+ * Supports:
+ * - Folder-based themes
+ * - ZIP-based themes
+ * - Theme validation against required schema
+ * - Image embedding as base64 data URIs
+ * - Cached theme registry with sorted priority order
+ *
+ * Acts as the core theme ingestion pipeline for the application UI.
+ */
+
 const fs = require("fs");
 const path = require("path");
 const { logger } = require("../server/logger");
 const JSZip = require("jszip");

+/**
+ * Maximum allowed size (in bytes) for theme images.
+ * Prevents memory abuse from large embedded assets.
+ */
 const MAX_IMAGE_SIZE = 10 * 1024 * 1024;
+
+/**
+ * List of supported image file extensions for theme assets.
+ */
 const ALLOWED_IMAGE_EXTENSIONS = [".jpg", ".jpeg", ".png", ".webp", ".gif", ".avif"];
+
+/**
+ * Allowed base filenames for theme background/cover images.
+ * Restricts theme asset resolution to known conventions.
+ */
 const ALLOWED_IMAGE_NAMES = ["cover", "background"];

+/**
+ * Priority order used to sort themes in UI.
+ * Themes not listed are placed at the end.
+ */
 const THEME_ORDER = ["dark", "light"];

+/**
+ * Required JSON schema paths for a valid theme definition.
+ * Each entry represents a nested property path that must exist.
+ */
 const REQUIRED_KEYS = [
  ["meta", "name"],
  ["meta", "author"],
@@ -20,10 +54,25 @@ const REQUIRED_KEYS = [
  ["style", "progressBar", "fill"],
 ];

+/**
+ * Safely retrieves a deeply nested value from an object using a key path array.
+ *
+ * @param {object} obj - Target object
+ * @param {string[]} keys - Property path segments
+ * @returns {*} value or undefined if path is invalid
+ */
 function getNestedValue(obj, keys) {
  return keys.reduce((acc, key) => acc?.[key], obj);
 }

+/**
+ * Validates theme JSON structure against required schema.
+ *
+ * Ensures all mandatory configuration keys exist before theme is accepted.
+ *
+ * @param {object} json - Parsed theme JSON
+ * @returns {{valid: boolean, reason?: string}}
+ */
 function validateThemeJson(json) {
  for (const keyPath of REQUIRED_KEYS) {
    if (getNestedValue(json, keyPath) === undefined) {
@@ -33,6 +82,14 @@ function validateThemeJson(json) {
  return { valid: true };
 }

+/**
+ * Normalizes raw theme JSON into application-ready theme object.
+ *
+ * @param {string} themeId
+ * @param {object} themeJson
+ * @param {string|null} imageData - Base64 encoded theme image
+ * @returns {object} normalized theme object
+ */
 function buildThemeObject(themeId, themeJson, imageData) {
  return {
    id: themeId.toLowerCase(),
@@ -45,6 +102,17 @@ function buildThemeObject(themeId, themeJson, imageData) {
  };
 }

+/**
+ * Extracts and encodes an image from theme archive into base64 data URI.
+ *
+ * Applies safety checks:
+ * - Rejects images exceeding MAX_IMAGE_SIZE
+ * - Converts file extension into valid MIME type
+ *
+ * @param {Buffer} buffer
+ * @param {string} filename
+ * @returns {string|null} data URI or null if invalid
+ */
 function extractImage(buffer, filename) {
  if (buffer.length > MAX_IMAGE_SIZE) {
    logger.warn(`Image too large, ignoring`);
@@ -55,6 +123,20 @@ function extractImage(buffer, filename) {
  return `data:image/${mime};base64,${buffer.toString("base64")}`;
 }

+/**
+ * Loads a theme from a ZIP archive.
+ *
+ * Steps:
+ * - Extract ZIP content
+ * - Locate .theme.json file
+ * - Validate JSON structure
+ * - Extract optional image asset
+ * - Build normalized theme object
+ *
+ * @param {string} zipPath
+ * @param {string} themeId
+ * @returns {Promise<object|null>}
+ */
 async function loadThemeFromZip(zipPath, themeId) {
  try {
    const zipBuffer = fs.readFileSync(zipPath);
@@ -91,6 +173,15 @@ async function loadThemeFromZip(zipPath, themeId) {
  }
 }

+/**
+ * Loads a theme from a directory structure.
+ *
+ * Equivalent to ZIP loader but works on filesystem directly.
+ *
+ * @param {string} folderPath
+ * @param {string} themeId
+ * @returns {Promise<object|null>}
+ */
 async function loadThemeFromFolder(folderPath, themeId) {
  try {
    const jsonFile = fs.readdirSync(folderPath).find(f => f.endsWith(".theme.json"));
@@ -124,13 +215,38 @@ async function loadThemeFromFolder(folderPath, themeId) {
  }
 }

+/**
+ * In-memory cache of loaded themes.
+ * Avoids re-parsing filesystem on every request.
+ */
 let cachedThemes = null;
+
+/**
+ * Active theme directory path used as source of truth.
+ */
 let themeFolderPath = null;

+/**
+ * Sets the active theme directory path.
+ *
+ * @param {string} folderPath
+ */
 function setThemeFolderPath(folderPath) {
  themeFolderPath = folderPath;
 }

+/**
+ * Loads all themes from the configured theme directory.
+ *
+ * Supports:
+ * - ZIP themes (.zip)
+ * - Folder themes (directory-based)
+ *
+ * Iterates through filesystem entries and delegates parsing
+ * to the appropriate loader (ZIP or folder).
+ *
+ * @returns {Promise<object[]>} List of valid theme objects
+ */
 async function loadThemesFromFolder() {
  const themes = [];

@@ -154,18 +270,37 @@ async function loadThemesFromFolder() {
    if (fs.statSync(filePath).isDirectory()) {
      const theme = await loadThemeFromFolder(filePath, themeId);
      if (theme) themes.push(theme);
-      continue;
    }
  }

  return themes;
 }

+/**
+ * Returns sorting priority for a theme ID.
+ *
+ * Lower index = higher priority.
+ * Themes not in THEME_ORDER are placed at the end.
+ *
+ * @param {string} id
+ * @returns {number}
+ */
 function getThemeOrder(id) {
  const index = THEME_ORDER.indexOf(id);
  return index === -1 ? Infinity : index;
 }

+/**
+ * Initializes the theme system.
+ *
+ * Steps:
+ * - Sets theme folder path
+ * - Loads all themes from disk
+ * - Sorts themes by priority order
+ * - Caches result in memory
+ *
+ * @param {string} folderPath
+ */
 async function initThemes(folderPath) {
  setThemeFolderPath(folderPath);
  const themes = await loadThemesFromFolder();
@@ -174,10 +309,24 @@ async function initThemes(folderPath) {
  logger.info(`Themes after sort: ${cachedThemes.map(t => t.id).join(", ")}`);
 }

+/**
+ * Returns cached themes.
+ *
+ * If themes are not loaded yet, returns empty array.
+ *
+ * @returns {object[]}
+ */
 function getThemes() {
  return cachedThemes ?? [];
 }

+/**
+ * Reloads themes from disk and refreshes cache.
+ *
+ * Used when themes are modified at runtime without restart.
+ *
+ * @returns {Promise<object[]>}
+ */
 async function reloadThemes() {
  const themes = await loadThemesFromFolder();
  cachedThemes = themes.sort((a, b) => getThemeOrder(a.id) - getThemeOrder(b.id));
--- a/app/windowManager.js
+++ b/app/windowManager.js
@@ -1,21 +1,55 @@
+/**
+ * Electron main window module dependencies.
+ * Handles BrowserWindow lifecycle and application UI shell.
+ */
+
 const { BrowserWindow, app } = require("electron");
 const path = require("path");
 const { logger } = require("../server/logger");
 const { configFeatures } = require("../config");
 const config = require("../config");

+/**
+ * Singleton reference to the main Electron BrowserWindow instance.
+ * Ensures only one application window exists at runtime.
+ */
 let mainWindow = null;

+/**
+ * Creates and initializes the main Electron application window.
+ *
+ * Responsibilities:
+ * - Ensures singleton window instance (prevents duplicates)
+ * - Configures window options (size, icon, preload, security settings)
+ * - Loads frontend application from local dev server
+ * - Handles lifecycle events (close, errors)
+ *
+ * @returns {Promise<BrowserWindow>} The created or existing window instance
+ */
 async function createMainWindow() {
+
+  /**
+   * Prevents multiple instances of the main window.
+   * Returns existing instance if already created.
+   */
  if (mainWindow) {
    logger.warn("Window already exists, no new creation!");
    return mainWindow;
  }

-  const iconPath = config.localMode
+  /**
+   * Resolves application icon path depending on runtime mode:
+   * - Development: local build folder
+   * - Production: packaged Electron resources
+   */
+  const iconPath = config.devMode
    ? path.join(__dirname, "../build/app-icon.ico")
    : path.join(process.resourcesPath, "build/app-icon.ico");

+  /**
+   * Electron BrowserWindow configuration object.
+   * Defines UI behavior, security settings, and preload bridge.
+   */
  const windowOptions = {
    title: `Freedom Loader ${config.version}`,
    icon: iconPath,
@@ -35,6 +69,10 @@ async function createMainWindow() {

  mainWindow = new BrowserWindow(windowOptions);

+  /**
+   * Loads the frontend application served by the local dev server.
+   * In production, this could be replaced with a file:// build.
+   */
  try {
    await mainWindow.loadURL(`http://localhost:${config.applicationPort}`);
    logger.info("Window loaded");
@@ -43,6 +81,10 @@ async function createMainWindow() {
    throw err;
  }

+  /**
+   * Cleans up window reference when the main window is closed.
+   * Prevents memory leaks and allows recreation if needed.
+   */
  mainWindow.on("closed", () => {
    logger.info("Main window closed");
    mainWindow = null;
@@ -51,6 +93,14 @@ async function createMainWindow() {
  return mainWindow;
 }

+/**
+ * Returns the current main window instance.
+ *
+ * Useful for IPC handlers and background services
+ * needing access to the renderer process.
+ *
+ * @returns {BrowserWindow | null}
+ */
 function getMainWindow() {
  return mainWindow;
 }
--- a/app/ytDlpUpdater.js
+++ b/app/ytDlpUpdater.js
@@ -1,10 +1,33 @@
 const { execFile } = require("child_process");
 const { logger } = require("../server/logger");

+/**
+ * Attempts to update the local yt-dlp binary using its built-in update command.
+ *
+ * This function:
+ * - Executes yt-dlp with the `-U` flag
+ * - Logs update output or warnings if update fails
+ * - Never throws: update failure is non-blocking by design
+ *
+ * @param {string} ytDlpPath - Absolute path to the yt-dlp executable
+ */
 function updateYtDlp(ytDlpPath) {
+
  logger.info("yt-dlp update check starting...");
+
+  /**
+   * Executes yt-dlp CLI process in a non-interactive mode.
+   * Used here specifically for self-update via `-U` flag.
+   */
  execFile(ytDlpPath, ["-U"], (err, stdout) => {
+
+    /**
+     * Handles yt-dlp update result:
+     * - Logs warning if update fails (network, binary issues, permissions)
+     * - Logs stdout output when update succeeds
+     */
    if (err) logger.warn("yt-dlp update failed (continuing):", err.message);
+    
    else logger.info(`yt-dlp update: ${stdout.trim()}`);
  });
 }
--- a/build/app-icon.png
+++ b/build/app-icon.png
--- a/config.js
+++ b/config.js
@@ -3,41 +3,129 @@ const { app } = require("electron");
 const fs = require("fs");
 const path = require("path");

-const localMode = !app.isPackaged;
+/**
+ * Indicates whether the application is running in development mode.
+ * Determined by Electron's packaging state.
+ */
+const devMode = process.env.NODE_ENV === "test" || !app?.isPackaged;

+/**
+ * Resolves the configuration file path depending on runtime environment.
+ *
+ * In development:
+ * - Uses local config/config.dev.json
+ * - Creates it from default if missing
+ *
+ * In production:
+ * - Uses app userData/config.json
+ * - Creates it from bundled default config if missing
+ *
+ * @returns {string} Absolute path to the active configuration file
+ */
 function resolveConfigPath() {
-  if (localMode) {
+  if (devMode) {
    const devConfigPath = path.join(__dirname, "config", "config.dev.json");
+
    if (!fs.existsSync(devConfigPath)) {
-      const defaultConfigPath = path.join(__dirname, "config", "config.default.json");
+      const defaultConfigPath = path.join(
+        __dirname,
+        "config",
+        "config.default.json"
+      );
      fs.copyFileSync(defaultConfigPath, devConfigPath);
    }
+
    return devConfigPath;
  }

  const userConfigPath = path.join(app.getPath("userData"), "config.json");
+
  if (!fs.existsSync(userConfigPath)) {
-    const defaultConfigPath = path.join(process.resourcesPath, "config", "config.default.json");
+    const defaultConfigPath = path.join(
+      process.resourcesPath,
+      "config",
+      "config.default.json"
+    );
    fs.copyFileSync(defaultConfigPath, userConfigPath);
  }

  return userConfigPath;
 }

+/**
+ * Path to the active configuration file used at runtime.
+ */
 const featuresPath = resolveConfigPath();

+/**
+ * Loads and parses the feature configuration file.
+ *
+ * @returns {Object} Parsed feature flags configuration
+ * @throws {Error} If the configuration file is missing or invalid
+ */
 function loadFeatures() {
  const raw = fs.readFileSync(featuresPath, "utf-8");
  return JSON.parse(raw);
 }

-const configFeatures = loadFeatures();
+/**
+ * Reloads feature flags from disk.
+ * Use this instead of the cached configFeatures snapshot
+ * when you need the latest user settings at call time.
+ *
+ * @returns {Object} Fresh feature flags from config file
+ */
+function reloadFeatures() {
+  try {
+    const raw = fs.readFileSync(featuresPath, "utf-8");
+    return JSON.parse(raw);
+  } catch (err) {
+    // Fallback to cached snapshot if file read fails
+    return configFeatures;
+  }
+}
+
+/**
+ * In-memory snapshot of application feature flags.
+ *
+ * Note: Changes to the config file are not automatically reflected.
+ * A restart or reload is required.
+ */
+let configFeatures = loadFeatures();

 module.exports = {
-  version: packageJson.version,
+  /**
+   * Application version from package.json
+   */
+  version: devMode ? `dev-${packageJson.version}` : `v${packageJson.version}` ,
+
+  /**
+   * Backend Express / internal server port
+   */
  applicationPort: "8787",
-  localMode,
+
+  /**
+   * Indicates whether the app is running in development mode
+   */
+  devMode,
+
+  /**
+   * Discord RPC application identifier
+   */
  DiscordRPCID: "1410934537051181146",
+
+  /**
+   * Runtime feature flags loaded from configuration file
+   */
  configFeatures,
-  featuresPath
-}
+
+  /**
+   * Function to reload the config
+   */
+  reloadFeatures,
+
+  /**
+   * Path to the active configuration file
+   */
+  featuresPath,
+};
--- a/config/config.default.json
+++ b/config/config.default.json
@@ -7,11 +7,13 @@
  "addMetadata": true,
  "verboseLogs": false,
  "autoDownloadPlaylist": true,
+  "keepPlaylistOrder": false,
  "createPlaylistFolders": true,
  "customCodec": "h264",
  "logSystem": true,
  "outputTitleCheck": true,
  "downloadSystem": true,
  "notifySystem": true,
+  "enableHardwareAcceleration": true,
  "theme": "dark" 
 }
--- a/jest.config.js
+++ b/jest.config.js
@@ -0,0 +1,21 @@
+module.exports = {
+    testEnvironment: "node",
+    testMatch: ["**/test/unit/**/*.test.js"],
+    collectCoverageFrom: [
+        "server/**/*.js",
+        "app/**/*.js",
+        "!app/autoUpdater.js",
+    ],
+
+    modulePathIgnorePatterns: [
+        "<rootDir>/dist",
+        "<rootDir>/release",
+        "<rootDir>/build",
+    ],
+
+    watchPathIgnorePatterns: [
+        "<rootDir>/dist",
+        "<rootDir>/release",
+        "<rootDir>/build",
+    ],
+};
--- a/main.js
+++ b/main.js
@@ -1,3 +1,8 @@
+/**
+ * Handle crash application and avoid ghost instance
+ */
+const { app } = require("electron");
+
 process.on("uncaughtException", (err) => {
  console.error("Uncaught exception:", err);
  app.quit();
@@ -8,44 +13,97 @@ process.on("unhandledRejection", (reason) => {
  app.quit();
 });

-const { app } = require("electron");
-const { createSplashWindow, closeSplashWindow, setSplashProgress } = require("./app/splashManager");
-const path = require("path");

-const { logger, logSessionStart, logSessionEnd } = require("./server/logger");
-const { initAutoUpdater } = require("./app/autoUpdater");
-const { startRPC, stopRPC } = require("./app/discordRPC");
+/**
+ * True if this is the primary instance (lock acquired successfully)
+ */
+const isPrimaryInstance = app.requestSingleInstanceLock();

+/**
+ * If we are on a second instance
+ */
+if (!isPrimaryInstance) {
+  app.quit();
+  process.exit(0);
+}
+
+/**
+ * Set App Name and AppID 
+ */
+app.setName("Freedom Loader");
+app.setAppUserModelId("com.masteracnolo.freedomloader");
+
+
+/**
+ * Load the app dependencies for hardware choice
+ */
+const { logger, logSessionStart, logSessionEnd, logDir } = require("./server/logger");
 const { configFeatures } = require("./config");
+
+/**
+ * On start, enable or disable hardWareAcceleration
+ */
+if (!configFeatures.enableHardwareAcceleration){
+  app.disableHardwareAcceleration();
+  logger.info("Disabled Hardware Acceleration")
+} else {
+  logger.info("Enable Hardware Acceleration")
+}
+
+/**
+ * In-memory snapshot of application feature flags.
+ *
+ * Note: Changes to the config file are not automatically reflected.
+ * A restart could be required.
+ */
 const config = require("./config");
+
+if(config.devMode){
+  /**
+   * Start devTron extensions - @see https://github.com/electron/devtron
+   */
+  const { devtron } = require('@electron/devtron');
+  devtron.install(); 
+  logger.info("Loaded DevTron Extension")
+}
+
+/**
+ * Load the app dependencies 
+ */
 const { initThemes } = require("./app/themeManager");

+const { initAutoUpdater } = require("./app/autoUpdater");
+const { startRPC, stopRPC } = require("./app/discordRPC");
 const { checkNativeDependencies } = require("./app/dependencyCheck");
 const { updateYtDlp } = require("./app/ytDlpUpdater");
 const { createMainWindow, getMainWindow } = require("./app/windowManager");
 const { registerIpcHandlers } = require("./app/ipcHandlers");
-const { userThemesPath, initUserThemes } = require("./server/helpers/path.helpers");
+const { createSplashWindow, closeSplashWindow, setSplashProgress } = require("./app/splashManager");
+const { userThemesPath, initUserThemes, isWindows, validateBinaries, defaultDownloadFolder } = require("./server/helpers/path.helpers");

-app.setName("Freedom Loader");
-app.setAppUserModelId("com.masteracnolo.freedomloader");
-app.disableHardwareAcceleration();

-if (!config.localMode) {
-  const gotLock = app.requestSingleInstanceLock();
-  if (gotLock) {
-    app.on("second-instance", () => {
-      logger.info("New instance detected, closing older...");
-      getMainWindow()?.destroy();
-    });
-  }
-}
+/**
+ * If another instance want to run
+ */
+app.on("second-instance", () => {
+  logger.info("Second instance detected");
+
+  const mainWindow = require("./app/windowManager").getMainWindow();
+
+  if (!mainWindow) return;
+
+  if (mainWindow.isMinimized()) mainWindow.restore();
+
+  mainWindow.show();
+  mainWindow.focus();
+});

 app.whenReady().then(async () => {
-  logSessionStart();
+  logSessionStart(logDir, defaultDownloadFolder);

  createSplashWindow();

-  if (!config.localMode && !checkNativeDependencies()) return;
+  if (!config.devMode && !checkNativeDependencies()) return;

  const { userYtDlp } = require("./server/helpers/path.helpers");
  updateYtDlp(userYtDlp);
@@ -58,13 +116,14 @@ app.whenReady().then(async () => {
    registerIpcHandlers(getMainWindow);

    setSplashProgress(2); // Loading themes
+
+    validateBinaries();
+
    initUserThemes();
-    await initThemes(userThemesPath); 
+    await initThemes(userThemesPath);

    setSplashProgress(3); // Almost ready
    await createMainWindow();
-
-    await new Promise(resolve => setTimeout(resolve, 2000));
    
    closeSplashWindow();
    getMainWindow().show();
--- a/package-lock.json
+++ b/package-lock.json
--- a/package.json
+++ b/package.json
@@ -1,13 +1,39 @@
 {
  "name": "freedom-loader",
  "productName": "Freedom Loader",
-  "version": "1.5.0",
-  "author": "MasterAcnolo",
-  "description": "Freedom Loader",
+  "version": "1.6.2-preview",
+  "author": "MasterAcnolo <MasterAcnolo@users.noreply.github.com>",
+  "description": "Free and open-source GUI for yt-dlp — download video and audio from hundreds of platforms",
+  "homepage": "https://masteracnolo.github.io/Freedom-Loader-Site/",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/MasterAcnolo/Freedom-Loader.git"
+  },
+  "license": "GPL-3.0-only",
+  "bugs": {
+    "url": "https://github.com/MasterAcnolo/Freedom-Loader/issues"
+  },
  "main": "main.js",
  "scripts": {
-    "start": "electron --trace-warnings .",
+    "start": "electron --no-warnings .",
+    "start:warn": "electron --trace-warnings .",
+    "start:debug": "WAYLAND_DEBUG=1 ELECTRON_ENABLE_LOGGING=1 ELECTRON_ENABLE_STACK_DUMPING=1 electron --enable-logging --v=1 .",
+    "dev": "nodemon --watch server --watch app --watch main.js --watch config.js --ext js,json --exec \"electron --no-warnings .\"",
+    "dev:warn": "nodemon --watch server --watch app --watch main.js --watch config.js --ext js,json --exec \"electron --trace-warnings .\"",
+    "dev:debug": "nodemon --watch server --watch app --watch main.js --watch config.js --ext js,json --exec \"WAYLAND_DEBUG=1 ELECTRON_ENABLE_LOGGING=1 ELECTRON_ENABLE_STACK_DUMPING=1 electron --enable-logging --v=1 .\"",
+
    "build": "electron-builder",
+    "build:win": "electron-builder --win",
+    "build:linux": "electron-builder --linux",
+    "build:rpm": "bash scripts/create-copr-package.sh",
+    "build:all": "electron-builder -wl",
+    "release": "bash scripts/release.sh",
+    "release:publish": "bash scripts/release.sh --publish",
+    "release:dry-run": "bash scripts/release.sh --dry-run",
+
+    "test": "jest",
+    "test:unit": "jest test/unit",
+
    "update": "npm update"
  },
  "dependencies": {
@@ -23,8 +49,14 @@
    "winston-daily-rotate-file": "^5.0.0"
  },
  "devDependencies": {
-    "electron": "^41.2.0",
-    "electron-builder": "^26.8.1"
+    "@electron/devtron": "^2.1.1",
+    "@jest/globals": "^30.4.1",
+    "@playwright/test": "^1.62.1",
+    "electron": "^43.3.0",
+    "electron-builder": "^26.15.3",
+    "jest": "^30.4.2",
+    "nodemon": "^3.1.14",
+    "playwright": "^1.62.1"
  },
  "build": {
    "appId": "com.masteracnolo.freedomloader",
@@ -33,7 +65,8 @@
      {
        "provider": "github",
        "owner": "MasterAcnolo",
-        "repo": "Freedom-Loader"
+        "repo": "Freedom-Loader",
+        "releaseType": "draft"
      }
    ],
    "files": [
@@ -55,10 +88,6 @@
        "from": "build/confirm-icon.png",
        "to": "confirm-icon.png"
      },
-      {
-        "from": "build/app-icon.ico",
-        "to": "app-icon.ico"
-      },
      {
        "from": "build/banner.bmp",
        "to": "banner.bmp"
@@ -71,22 +100,6 @@
        "from": "build/error.png",
        "to": "error.png"
      },
-      {
-        "from": "ressources/yt-dlp.exe",
-        "to": "binaries/yt-dlp.exe"
-      },
-      {
-        "from": "ressources/ffmpeg.exe",
-        "to": "binaries/ffmpeg.exe"
-      },
-      {
-        "from": "ressources/ffprobe.exe",
-        "to": "binaries/ffprobe.exe"
-      },
-      {
-        "from": "ressources/deno.exe",
-        "to": "binaries/deno.exe"
-      },
      {
        "from": "config/config.default.json",
        "to": "config/config.default.json"
@@ -94,7 +107,26 @@
    ],
    "win": {
      "target": "nsis",
-      "icon": "build/app-icon.ico"
+      "icon": "build/app-icon.ico",
+      "artifactName": "Freedom-Loader-Setup-${version}.${ext}",
+      "extraResources": [
+        {
+          "from": "resources/binaries/win-32/yt-dlp.exe",
+          "to": "binaries/yt-dlp.exe"
+        },
+        {
+          "from": "resources/binaries/win-32/ffmpeg.exe",
+          "to": "binaries/ffmpeg.exe"
+        },
+        {
+          "from": "resources/binaries/win-32/ffprobe.exe",
+          "to": "binaries/ffprobe.exe"
+        },
+        {
+          "from": "resources/binaries/win-32/deno.exe",
+          "to": "binaries/deno.exe"
+        }
+      ]
    },
    "nsis": {
      "oneClick": false,
@@ -106,6 +138,51 @@
      "createDesktopShortcut": true,
      "createStartMenuShortcut": true,
      "shortcutName": "Freedom Loader"
+    },
+    "linux": {
+      "target": [
+        "AppImage",
+        "deb",
+        "snap"
+      ],
+      "category": "Utility",
+      "icon": "build/app-icon.png",
+      "executableName": "freedom-loader",
+      "extraResources": [
+        {
+          "from": "resources/binaries/linux/yt-dlp",
+          "to": "binaries/yt-dlp"
+        },
+        {
+          "from": "resources/binaries/linux/ffmpeg",
+          "to": "binaries/ffmpeg"
+        },
+        {
+          "from": "resources/binaries/linux/ffprobe",
+          "to": "binaries/ffprobe"
+        },
+        {
+          "from": "resources/binaries/linux/deno",
+          "to": "binaries/deno"
+        }
+      ]
+    },
+    "deb": {
+      "fpm": [
+        "./package/com.masteracnolo.freedomloader.metainfo.xml=/usr/share/metainfo/com.masteracnolo.freedomloader.metainfo.xml"
+      ]
+    },
+    "rpm": {
+      "fpm": [
+        "./package/com.masteracnolo.freedomloader.metainfo.xml=/usr/share/metainfo/com.masteracnolo.freedomloader.metainfo.xml"
+      ]
+    },
+    "snap": {
+      "confinement": "strict",
+      "plugs": [
+        "default",
+        "removable-media"
+      ]
    }
  }
 }
--- a/package/com.masteracnolo.freedomloader.metainfo.xml
+++ b/package/com.masteracnolo.freedomloader.metainfo.xml
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<component type="desktop-application">
+    <id>com.masteracnolo.freedomloader</id>
+
+    <name>Freedom Loader</name>
+
+    <summary>GUI for yt-dlp to download video and audio with metadata</summary>
+
+    <metadata_license>CC0-1.0</metadata_license>
+    <project_license>GPL-3.0-only</project_license>
+
+    <developer id="com.masteracnolo">
+        <name>MasterAcnolo</name>
+    </developer>
+
+    <description>
+        <p>
+            Freedom Loader is a free and open-source graphical interface built
+            around yt-dlp, the powerful command-line media downloader. It lets
+            you download video and audio from hundreds of supported websites
+            without ever touching a terminal, with no ads, no tracking, and
+            no questionable third-party services.
+        </p>
+        <p>
+            Under the hood, Freedom Loader bundles yt-dlp and ffmpeg directly,
+            so there is nothing extra to install: paste a link, choose a
+            format and quality, and the app handles fetching, converting
+            and tagging the file for you.
+        </p>
+        <p>Features include:</p>
+        <ul>
+            <li>MP4 video or MP3 audio downloads with embedded metadata and thumbnails</li>
+            <li>Quality selection from best to specific resolutions (1080p, 720p, 480p)</li>
+            <li>Codec choice: H.264, H.265, AV1, VP9 and Theora</li>
+            <li>Playlist downloads with automatic per-playlist folders</li>
+            <li>Cookie-based access to age-restricted and member-only content</li>
+            <li>Custom theme system with a web-based theme creator</li>
+            <li>Real-time download progress with network speed indicator</li>
+            <li>Optional Discord Rich Presence integration</li>
+            <li>Automatic application and download-engine updates</li>
+        </ul>
+        <p>
+            DRM-protected content is not supported and cannot be downloaded.
+        </p>
+    </description>
+
+    <launchable type="desktop-id">freedom-loader.desktop</launchable>
+
+    <url type="homepage">https://github.com/MasterAcnolo/Freedom-Loader</url>
+    <url type="bugtracker">https://github.com/MasterAcnolo/Freedom-Loader/issues</url>
+    <url type="vcs-browser">https://github.com/MasterAcnolo/Freedom-Loader</url>
+
+    <categories>
+        <category>AudioVideo</category>
+        <category>Utility</category>
+        <category>Network</category>
+    </categories>
+
+    <releases>
+        <release version="1.6.0" date="2026-06-23">
+            <description>
+                <p>Latest stable release.</p>
+            </description>
+        </release>
+    </releases>
+
+    <content_rating type="oars-1.1"/>
+
+    <provides>
+        <binary>freedom-loader</binary>
+    </provides>
+</component>
--- a/package/copr-build.sh
+++ b/package/copr-build.sh
@@ -0,0 +1,9 @@
+#!/bin/sh -xe
+git clone --depth 1 https://github.com/MasterAcnolo/Freedom-Loader.git src
+cd src
+npm ci
+npx electron-builder --linux dir
+
+VERSION=$(node -p "require('./package.json').version")
+tar czf "$resultdir/freedom-loader-$VERSION.tar.gz" -C dist linux-unpacked
+sed "s/__VERSION__/$VERSION/" package/freedom-loader.spec > "$resultdir/freedom-loader.spec"
--- a/package/freedom-loader.spec
+++ b/package/freedom-loader.spec
@@ -0,0 +1,25 @@
+Name:           freedom-loader
+Version:        __VERSION__
+Release:        1%{?dist}
+Summary:        GUI for yt-dlp media downloads
+License:        GPL-3.0-only
+Source0:        freedom-loader-__VERSION__.x86_64.rpm
+BuildArch:      x86_64
+Requires:       glibc, gtk3, nss, libXScrnSaver
+
+%description
+GUI for yt-dlp media downloads.
+
+%install
+rpm2cpio %{SOURCE0} | (cd %{buildroot} && cpio -idmv)
+mkdir -p %{buildroot}/usr/bin
+ln -sf "/opt/Freedom Loader/freedom-loader" %{buildroot}/usr/bin/freedom-loader
+
+%files
+/opt/*
+/usr/bin/freedom-loader
+/usr/share/applications/*
+/usr/share/metainfo/*
+/usr/share/icons/hicolor
+
+%changelog
--- a/preload.js
+++ b/preload.js
@@ -1,27 +1,129 @@
 const { contextBridge, ipcRenderer } = require("electron");

+/**
+ * Exposes the main application API to the renderer process.
+ *
+ * This API acts as a secure bridge between the renderer and the
+ * Electron main process using IPC (Inter-Process Communication).
+ * All calls are explicitly whitelisted.
+ */
 contextBridge.exposeInMainWorld("electronAPI", {
+
+  /**
+   * Return process.platform to renderer
+   */
+  getProcessPlatform: () => process.platform,
+
+  /**
+   * Returns the default system download directory.
+   */
  getDefaultDownloadPath: () => ipcRenderer.invoke("get-default-download-path"),
+
+  /**
+   * Opens a native dialog allowing the user to select a download folder.
+   */
  selectDownloadFolder: () => ipcRenderer.invoke("select-download-folder"),
+
+  /**
+   * Sends download progress value to the main process (used for taskbar / UI sync).
+   *
+   * @param {number} percent - Download progress percentage (0–100)
+   */
  setProgress: (percent) => ipcRenderer.send("set-progress", percent),
+
+  /**
+   * Retrieves application feature flags (runtime configuration).
+   */
  getFeatures: () => ipcRenderer.invoke("features"),
-  setFeature: (key, value) => ipcRenderer.invoke("set-feature", { key, value }),
+
+  /**
+   * Updates a feature flag dynamically at runtime.
+   *
+   * @param {string} key - Feature name
+   * @param {any} value - Feature value
+   */
+  setFeature: (key, value) =>
+    ipcRenderer.invoke("set-feature", { key, value }),
+
+  /**
+   * Returns the current application version.
+  */
  getVersion: () => ipcRenderer.invoke("version"),
-  getValidatedDownloadPath: (path) => ipcRenderer.invoke("validate-download-path", path),
+
+  /**
+   * Validates a download path before using it for file operations.
+   *
+   * @param {string} path - Path to validate
+   */
+  getValidatedDownloadPath: (path) =>
+    ipcRenderer.invoke("validate-download-path", path),
+
+  /**
+   * Retrieves available themes from the filesystem or config layer.
+   */
  getThemes: () => ipcRenderer.invoke("get-themes"),
-  reloadThemes: () => ipcRenderer.invoke("reload-themes")
+
+  /**
+   * Forces a reload of theme files (useful after modification/import).
+   */
+  reloadThemes: () => ipcRenderer.invoke("reload-themes"),
 });

-// Contrôles de fenêtre et outils custom pour la topbar
+
+/**
+ * Exposes window control and developer utilities for the custom topbar UI.
+ *
+ * These methods forward commands to the Electron main process via IPC.
+ */
 contextBridge.exposeInMainWorld("topbarAPI", {
+
+  /**
+   * Minimizes the application window.
+   */
  minimize: () => ipcRenderer.send("window-minimize"),
+
+  /**
+   * Toggles maximize/restore state of the application window.
+   */
  maximize: () => ipcRenderer.send("window-maximize"),
+
+  /**
+   * Closes the application window.
+   */
  close: () => ipcRenderer.send("window-close"),
+
+  /**
+   * Opens Chromium DevTools for debugging.
+   */
  openDevTools: () => ipcRenderer.send("open-devtools"),
+
+  /**
+   * Opens application logs directory or log viewer.
+   */
  openLogs: () => ipcRenderer.send("open-logs"),
+
+  /**
+   * Opens the official website or project homepage.
+   */
  openWebsite: () => ipcRenderer.send("open-website"),
+
+  /**
+   * Opens the theme directory or theme editor interface.
+   */
  openTheme: () => ipcRenderer.send("open-theme"),
+
+  /**
+   * Opens project wiki/documentation.
+   */
  openWiki: () => ipcRenderer.send("open-wiki"),
+
+  /**
+   * Opens the workshop or external content library.
+   */
  openWorkshop: () => ipcRenderer.send("open-workshop"),
-  openConfig: () => ipcRenderer.send("open-config")
-});
+
+  /**
+   * Opens configuration/settings panel.
+   */
+  openConfig: () => ipcRenderer.send("open-config"),
+});
--- a/public/index.html
+++ b/public/index.html
@@ -106,10 +106,10 @@
                </div>

                <div class="setting-item">
-                    <input type="checkbox" data-key="autoCheckInfo" id="autoCheckInfo">
+                    <input data-key="keepPlaylistOrder" id="keepPlaylistOrder" type="checkbox">
                    <div class="setting-info">
-                    <span class="setting-title">Auto Fetch Info</span>
-                    <small>Automatically fetch information for new downloads.</small>
+                        <span class="setting-title">Keep Playlist Order</span>
+                        <small>Add index before output file, to keep the order.</small>
                    </div>
                </div>
            </div>
@@ -135,7 +135,15 @@
                    </div>
                </div> -->

-                <div class="setting-item">
+                    <div class="setting-item">
+                        <input data-key="autoCheckInfo" id="autoCheckInfo" type="checkbox">
+                        <div class="setting-info">
+                            <span class="setting-title">Auto Fetch Info</span>
+                            <small>Automatically fetch information for new downloads.</small>
+                        </div>
+                    </div>
+
+                    <div class="setting-item">
                    <input type="checkbox" data-key="addMetadata" id="addMetadata">
                    <div class="setting-info">
                    <span class="setting-title">Add Metadata</span>
@@ -175,28 +183,20 @@
                    </div>
                </div>

+                <div class="setting-item">
+                    <input type="checkbox" data-key="enableHardwareAcceleration" id="enableHardwareAcceleration">
+                    <div class="setting-info">
+                    <span class="setting-title">Enable Hardware Acceleration</span>
+                    <small>Uses GPU acceleration for rendering when available. <br> (Be effective on next launch)</small>
+                    </div>
+                </div>
+
                </details>

                <!-- Developer Settings -->
                <details class="settings-section">
                <summary>Developer Settings</summary>

-                <!-- <div class="setting-item">
-                    <input type="checkbox" data-key="downloadSystem" id="downloadSystem">
-                    <div class="setting-info">
-                    <span class="setting-title">Download System</span>
-                    <small>Enable/disable the internal download system.</small>
-                    </div>
-                </div> -->
-
-                <!-- <div class="setting-item">
-                    <input type="checkbox" data-key="logSystem" id="logSystem">
-                    <div class="setting-info">
-                    <span class="setting-title">Log System</span>
-                    <small>Enable logging system.</small>
-                    </div>
-                </div> -->
-
                <div class="setting-item">
                    <input type="checkbox" data-key="verboseLogs" id="verboseLogs">
                    <div class="setting-info">
@@ -298,6 +298,7 @@
    
    <!-- Scripts -->
    <script src="script/toast.js"></script>
+    <script src="script/customConfiguration.js"></script>
    <script src="script/clipboardPaste.js"></script>
    <script src="script/custompath.js"></script>
    <script src="script/settingsPanel.js"></script>
--- a/public/script/appVersion.js
+++ b/public/script/appVersion.js
@@ -1,8 +1,54 @@
-async function versionLabel(){
-    const appVersion = await window.electronAPI.getVersion();
+/**
+ * Retrieves the application version and build state from the backend.
+ * Displays a formatted string indicating packaging state and preview status.
+ * Hides the "Packaged" state for production builds to keep the UI clean.
+ *
+ * Example outputs: "Not Packaged Preview v1.6.2" or "Preview v1.6.2"
+ *
+ * @returns {Promise<void>}
+ */
+async function versionLabel() {
+  /**
+   * Raw version string from the backend (e.g., "dev-1.6.2-preview" or "v1.6.2")
+   * @type {string}
+   */
+  const appVersion = await window.electronAPI.getVersion();

-    // Write in front the app version for debugging (bottom right)
-    document.getElementById("version-badge").textContent = `v${appVersion}`;
-};
+  /**
+   * UI element displaying the current application version.
+   * @type {HTMLElement | null}
+   */
+  const versionBadge = document.getElementById("version-badge");
+
+  if (!versionBadge) return;
+
+  /**
+   * Extracts the numeric semantic version (e.g., "1.6.2").
+   * @type {RegExpMatchArray | null}
+   */
+  const versionMatch = appVersion.match(/(\d+\.\d+\.\d+)/);
+  const baseVersion = versionMatch ? versionMatch[0] : "Unknown";
+
+  /**
+   * Determines the packaging state. The backend prepends "dev-" if unpackaged.
+   * @type {boolean}
+   */
+  const isPackaged = !appVersion.includes("dev-");
+
+  /**
+   * Determines if the current build is a preview version.
+   * @type {boolean}
+   */
+  const isPreview = appVersion.includes("preview");
+
+  /**
+   * Construct the final display string.
+   * If packaged, we don't mention it. If not, we explicitly say "Not Packaged ".
+   */
+  const packageStateStr = isPackaged ? "" : "Not Packaged ";
+  const previewStr = isPreview ? "Preview " : "";
+
+  versionBadge.textContent = `${packageStateStr}${previewStr}v${baseVersion}`;
+}

 versionLabel();
--- a/public/script/clipboardPaste.js
+++ b/public/script/clipboardPaste.js
@@ -1,35 +1,40 @@
-// Clipboard paste functionality for URL input
-document.addEventListener('DOMContentLoaded', () => {
-    const pasteBtn = document.getElementById('pasteBtn');
-    const urlInput = document.getElementById('UrlInput');
+/**
+ * Initializes clipboard paste functionality for the URL input field.
+ *
+ * When the user clicks the paste button, the system attempts to read
+ * the clipboard content and inject it into the URL input field.
+ * It also triggers an input event to notify any bound listeners.
+ */
+document.addEventListener("DOMContentLoaded", () => {
+  const pasteBtn = document.getElementById("pasteBtn");
+  const urlInput = document.getElementById("UrlInput");

-    if (pasteBtn && urlInput) {
-        pasteBtn.addEventListener('click', async () => {
-            try {
-                // Read text from clipboard
-                const text = await navigator.clipboard.readText();
-                
-                // Paste into the URL input
-                urlInput.value = text;
-                
-                // Trigger input event to ensure any listeners are notified
-                urlInput.dispatchEvent(new Event('input', { bubbles: true }));
-                
-                // Optional: Focus the input
-                urlInput.focus();
-                
-                // Visual feedback
-                pasteBtn.style.backgroundColor = 'var(--form-button-bg-hover-color)';
-                setTimeout(() => {
-                    pasteBtn.style.backgroundColor = '';
-                }, 200);
-                
-            } catch (err) {
-                console.error('Failed to read clipboard:', err);
-                
-                // Fallback: prompt user if clipboard API fails
-                alert('Unable to access clipboard. Please paste manually using Ctrl+V.');
-            }
-        });
+  if (!pasteBtn || !urlInput) return;
+
+  /**
+   * Handles clipboard paste action triggered by the paste button.
+   * Reads clipboard text and inserts it into the URL input field.
+   */
+  pasteBtn.addEventListener("click", async () => {
+    try {
+      urlInput.value = await navigator.clipboard.readText();
+
+      // Notify frameworks / listeners bound to input changes
+      urlInput.dispatchEvent(new Event("input", { bubbles: true }));
+
+      urlInput.focus();
+
+      // Temporary UI feedback on paste action
+      pasteBtn.style.backgroundColor = "var(--form-button-bg-hover-color)";
+      setTimeout(() => {
+        pasteBtn.style.backgroundColor = "";
+      }, 200);
+    } catch (err) {
+      console.error("Clipboard access failed:", err);
+
+      alert(
+        "Unable to access clipboard. Please paste manually using Ctrl+V."
+      );
    }
-});
+  });
+});
--- a/public/script/customConfiguration.js
+++ b/public/script/customConfiguration.js
@@ -0,0 +1,27 @@
+async function initPlatformRestrictions() {
+  const platform = await window.electronAPI.getProcessPlatform();
+
+  const themeSelect = document.getElementById("themeSelect");
+  const refreshBtn = document.getElementById("refresh-themes-btn");
+
+  /**
+   * Is the OS windows
+   * @type {boolean}
+   */
+  const isWindows = platform === "win32";
+
+  console.log(isWindows);
+
+  // If it's windows, the button is not disabled.
+  themeSelect.disabled = !isWindows;
+  refreshBtn.disabled = !isWindows;
+
+  themeSelect.classList.toggle("disabled", !isWindows);
+  refreshBtn.classList.toggle("disabled", !isWindows);
+
+  if (!isWindows) {
+    themeSelect.title = "Themes are only available on Windows";
+    refreshBtn.title = "Themes are only available on Windows";
+  }
+}
+
--- a/public/script/custompath.js
+++ b/public/script/custompath.js
@@ -1,9 +1,24 @@
+/**
+ * Initializes the download path system once the UI is ready.
+ *
+ * Responsibilities:
+ * - Restore last known user-selected download path (localStorage)
+ * - Validate it against backend rules
+ * - Synchronize with backend authoritative path
+ * - Setup folder selection UI interaction
+ */
 window.addEventListener("DOMContentLoaded", async () => {
  const savePathElem = document.getElementById("savePath");
  const form = document.getElementById("downloadForm");

-  // input caché = DERNIER chemin validé par le back
+  /**
+   * Hidden form field storing the validated download path
+   * used during download submission.
+   *
+   * Created dynamically if not already present in DOM.
+   */
  let hidden = document.getElementById("savePathInput");
+  
  if (!hidden) {
    hidden = document.createElement("input");
    hidden.type = "hidden";
@@ -12,6 +27,17 @@ window.addEventListener("DOMContentLoaded", async () => {
    form.appendChild(hidden);
  }

+  /**
+   * Applies a validated download path received from backend.
+   *
+   * Updates:
+   * - UI display (visible path)
+   * - tooltip (full path)
+   * - hidden form input (used for submission)
+   * - localStorage cache (UX persistence only, not authoritative)
+   *
+   * @param {string} path - validated absolute download path
+   */
  async function applyPathFromBack(path) {
    savePathElem.textContent = path;
    savePathElem.title = path; 
@@ -19,6 +45,14 @@ window.addEventListener("DOMContentLoaded", async () => {
    localStorage.setItem("customDownloadPath", path); // UX only
  }

+  /**
+   * Loads the initial download path on application startup.
+   *
+   * Priority order:
+   * 1. cached localStorage value (UX only, not trusted)
+   * 2. backend validated version of cached path
+   * 3. backend default fallback path if validation fails
+   */
  async function loadInitialPath() {
    // On affiche ce que le user a vu la dernière fois (UX)
    const cached = localStorage.getItem("customDownloadPath");
@@ -42,13 +76,16 @@ window.addEventListener("DOMContentLoaded", async () => {

  await loadInitialPath();

-  document
-    .getElementById("changePath")
-    .addEventListener("click", async () => {
+  /**
+   * Opens system folder selector and updates download path.
+   *
+   * The selected folder is validated by Electron backend
+   * before being applied to the UI and persisted.
+   */
+  document.getElementById("changePath").addEventListener("click", async () => {
      try {
        // selectDownloadFolder already returns a validated path
-        const validatedPath =
-          await window.electronAPI.selectDownloadFolder();
+        const validatedPath = await window.electronAPI.selectDownloadFolder();

        if (!validatedPath) return; // cancelled

--- a/public/script/customthemes.js
+++ b/public/script/customthemes.js
@@ -1,6 +1,22 @@
 const themeSelect = document.getElementById("themeSelect");
+/**
+ * Currently selected themes loaded from backend.
+ * Used as cache for UI theme switching.
+ */
 let loadedThemes = [];

+/**
+ * Applies a theme object to the application UI by mapping
+ * theme configuration values to CSS variables and DOM properties.
+ *
+ * This function mutates:
+ * - document.body (background styling)
+ * - :root CSS variables (design system tokens)
+ * - subtitle DOM element (theme metadata display)
+ *
+ * @param {Object} theme - Theme definition object
+ * @param {Object} theme.style - Style configuration
+ */
 function applyTheme(theme) {
  const root = document.documentElement;
  const style = theme.style;
@@ -15,72 +31,75 @@ function applyTheme(theme) {
    document.body.style.backgroundImage = "";
  }

-  // Colors
-  root.style.setProperty("--background-color",          style.colors?.background || "");
-  root.style.setProperty("--default-text-color",        style.colors?.text?.default || "");
-  root.style.setProperty("--subtitle-color",            style.colors?.text?.subtitle || "");
-  root.style.setProperty("--audio-only-label-color",    style.colors?.text?.audioOnly || "");
+  // CSS variables (design tokens)
+  root.style.setProperty("--background-color", style.colors?.background || "#121212");
+  root.style.setProperty("--default-text-color", style.colors?.text?.default || "#e0e0e0");
+  root.style.setProperty("--subtitle-color", style.colors?.text?.subtitle || "#2196f3");
+  root.style.setProperty("--audio-only-label-color", style.colors?.text?.audioOnly || "#f5f5f5");

-  // Form
-  root.style.setProperty("--form-bg-color",                   style.form?.background || "");
-  root.style.setProperty("--form-input-bg-color",             style.form?.input?.background || "");
-  root.style.setProperty("--form-input-border-color",         style.form?.input?.border || "");
-  root.style.setProperty("--form-input-border-focus-color",   style.form?.input?.borderFocus || "");
-  root.style.setProperty("--form-input-text-color",           style.form?.input?.text || "");
-  root.style.setProperty("--form-input-placeholder-color",    style.form?.input?.placeholder || "");
-  root.style.setProperty("--form-button-bg-color",            style.form?.button?.background || "");
-  root.style.setProperty("--form-button-text-color",          style.form?.button?.text || "");
-  root.style.setProperty("--form-button-bg-hover-color",      style.form?.button?.hover || "");
-  root.style.setProperty("--paste-button-icon-color",         style.form?.pasteButtonIcon || "");
+  root.style.setProperty("--form-bg-color", style.form?.background || "#1e1e1e");
+  root.style.setProperty("--form-input-bg-color", style.form?.input?.background || "#2a2a2a");
+  root.style.setProperty("--form-input-border-color", style.form?.input?.border || "#444444");
+  root.style.setProperty("--form-input-border-focus-color", style.form?.input?.borderFocus || "#2196f3");
+  root.style.setProperty("--form-input-text-color", style.form?.input?.text || "#f5f5f5");
+  root.style.setProperty("--form-input-placeholder-color", style.form?.input?.placeholder || "#888888");
+  root.style.setProperty("--form-button-bg-color", style.form?.button?.background || "#2196f3");
+  root.style.setProperty("--form-button-text-color", style.form?.button?.text || "#ffffff");
+  root.style.setProperty("--form-button-bg-hover-color", style.form?.button?.hover || "#1976d2");
+  root.style.setProperty("--paste-button-icon-color", style.form?.pasteButtonIcon || "#ffffff");

-  // Checkbox
-  root.style.setProperty("--checkbox-unchecked-bg-color",       style.checkbox?.background?.unchecked || "");
-  root.style.setProperty("--checkbox-checked-bg-color",         style.checkbox?.background?.checked || "");
-  root.style.setProperty("--checkbox-checkmark-border-color",   style.checkbox?.checkmarkBorder || "");
-  root.style.setProperty("--checkbox-pulse-color",              style.checkbox?.pulse || "");
+  root.style.setProperty("--checkbox-unchecked-bg-color", style.checkbox?.background?.unchecked || "#555555");
+  root.style.setProperty("--checkbox-checked-bg-color", style.checkbox?.background?.checked || "#2196f3");
+  root.style.setProperty("--checkbox-checkmark-border-color", style.checkbox?.checkmarkBorder || "#ffffff");
+  root.style.setProperty("--checkbox-pulse-color", style.checkbox?.pulse || "rgba(33, 150, 243, 0.5)");

-  // Download
-  root.style.setProperty("--download-status-color", style.download?.status || "");
+  root.style.setProperty("--download-status-color", style.download?.status || "#2196f3");

-  // Progress bar
-  root.style.setProperty("--progress-bar-bg-color",   style.progressBar?.background || "");
-  root.style.setProperty("--progress-bar-fill-color", style.progressBar?.fill || "");
+  root.style.setProperty("--progress-bar-bg-color", style.progressBar?.background || "#444444");
+  root.style.setProperty("--progress-bar-fill-color", style.progressBar?.fill || "#2196f3");

-  // Video info
-  root.style.setProperty("--video-info-bg-color",          style.videoInfo?.background || "");
-  root.style.setProperty("--video-info-text-color",        style.videoInfo?.text || "");
-  root.style.setProperty("--video-info-heading-color",     style.videoInfo?.heading || "");
-  root.style.setProperty("--video-info-list-color",        style.videoInfo?.list || "");
-  root.style.setProperty("--video-info-list-strong-color", style.videoInfo?.strong || "");
-  root.style.setProperty("--video-info-link-color",        style.videoInfo?.link || "");
-  root.style.setProperty("--video-info-link-hover-color",  style.videoInfo?.linkHover || "");
+  root.style.setProperty("--video-info-bg-color", style.videoInfo?.background || "#1a1a1a");
+  root.style.setProperty("--video-info-text-color", style.videoInfo?.text || "#e0e0e0");
+  root.style.setProperty("--video-info-heading-color", style.videoInfo?.heading || "#2196f3");
+  root.style.setProperty("--video-info-list-color", style.videoInfo?.list || "#cccccc");
+  root.style.setProperty("--video-info-list-strong-color", style.videoInfo?.strong || "#ffffff");
+  root.style.setProperty("--video-info-link-color", style.videoInfo?.link || "#2196f3");
+  root.style.setProperty("--video-info-link-hover-color", style.videoInfo?.linkHover || "#1976d2");

-  // Playlist
-  root.style.setProperty("--playlist-background-color", style.playlist?.background || "");
+  root.style.setProperty("--playlist-background-color", style.playlist?.background || "#303030");

-  // Settings
-  root.style.setProperty("--settings-button-bg-color",      style.settings?.button?.background || "");
-  root.style.setProperty("--settings-button-text-color",    style.settings?.button?.text || "");
-  root.style.setProperty("--open-theme-button-bg-color",    style.settings?.openThemeButton?.background || "");
-  root.style.setProperty("--open-theme-button-text-color",  style.settings?.openThemeButton?.text || "");
-  root.style.setProperty("--open-json-button-bg-color",     style.settings?.openJsonButton?.background || style.settings?.button?.background || "");
-  root.style.setProperty("--open-json-button-text-color",   style.settings?.openJsonButton?.text || style.settings?.button?.text || "");
-  root.style.setProperty("--settings-modal-bg-color",       style.settings?.background?.modal || "");
-  root.style.setProperty("--settings-section-bg-color",     style.settings?.background?.section || "");
-  root.style.setProperty("--settings-text-color",           style.settings?.text || "");
-  root.style.setProperty("--settings-subtitle-color",       style.settings?.subtitle || "");
+  root.style.setProperty("--settings-button-bg-color", style.settings?.button?.background || "#1e1e1e");
+  root.style.setProperty("--settings-button-text-color", style.settings?.button?.text || "#e0e0e0");
+  root.style.setProperty("--open-theme-button-bg-color", style.settings?.openThemeButton?.background || "#2196f3");
+  root.style.setProperty("--open-theme-button-text-color", style.settings?.openThemeButton?.text || "#ffffff");
+  root.style.setProperty("--open-json-button-bg-color", style.settings?.openJsonButton?.background || style.settings?.button?.background || "#1e1e1e");
+  root.style.setProperty("--open-json-button-text-color", style.settings?.openJsonButton?.text || style.settings?.button?.text || "#e0e0e0");
+  root.style.setProperty("--settings-modal-bg-color", style.settings?.background?.modal || "#1e1e1e");
+  root.style.setProperty("--settings-section-bg-color", style.settings?.background?.section || "#2a2a2a");
+  root.style.setProperty("--settings-text-color", style.settings?.text || "#e0e0e0");
+  root.style.setProperty("--settings-subtitle-color", style.settings?.subtitle || "#aaaaaa");

-  // Subtitle
  const subtitleEl = document.getElementById("subtitle");
  if (subtitleEl) subtitleEl.textContent = theme.subtitle || theme.name;
 }

+/**
+ * Persists selected theme ID into Electron backend features storage.
+ *
+ * @param {string} themeId
+ */
 function saveTheme(themeId) {
  window.electronAPI.setFeature("theme", themeId);
 }

+/**
+ * Populates theme dropdown selector with available themes.
+ *
+ * @param {Array} themes
+ */
 function populateThemeSelect(themes) {
  themeSelect.innerHTML = "";
+
  for (const theme of themes) {
    const option = document.createElement("option");
    option.value = theme.id;
@@ -89,35 +108,143 @@ function populateThemeSelect(themes) {
  }
 }

+/**
+ * Initializes theme system:
+ * - loads themes from backend
+ * - restores saved theme
+ * - applies selected theme
+ */
 async function initThemes() {
  loadedThemes = await window.electronAPI.getThemes();

-  if (!loadedThemes.length) return;
+  if (!loadedThemes.length) {
+    const defaultTheme = {
+      id: "dark",
+      name: "Dark",
+      subtitle: "Darkness is my ally",
+      style: {
+        background: {
+          size: "cover",
+          position: "center",
+          attachment: "fixed"
+        },
+
+        colors: {
+          background: "#121212",
+          text: {
+            default: "#e0e0e0",
+            subtitle: "#2196f3",
+            audioOnly: "#f5f5f5"
+          }
+        },
+
+        form: {
+          background: "#1e1e1e",
+          input: {
+            background: "#2a2a2a",
+            border: "#444444",
+            borderFocus: "#2196f3",
+            text: "#f5f5f5",
+            placeholder: "#888888"
+          },
+          button: {
+            background: "#2196f3",
+            text: "#ffffff",
+            hover: "#1976d2"
+          },
+          pasteButtonIcon: "#ffffff"
+        },
+
+        checkbox: {
+          background: {
+            unchecked: "#555555",
+            checked: "#2196f3"
+          },
+          checkmarkBorder: "#ffffff",
+          pulse: "rgba(33, 150, 243, 0.5)"
+        },
+
+        download: {
+          status: "#2196f3"
+        },
+
+        progressBar: {
+          background: "#444444",
+          fill: "#2196f3"
+        },
+
+        videoInfo: {
+          background: "#1a1a1a",
+          text: "#e0e0e0",
+          heading: "#2196f3",
+          list: "#cccccc",
+          strong: "#ffffff",
+          link: "#2196f3",
+          linkHover: "#1976d2"
+        },
+
+        playlist: {
+          background: "#303030"
+        },
+
+        settings: {
+          button: {
+            background: "#1e1e1e",
+            text: "#e0e0e0"
+          },
+          openThemeButton: {
+            background: "#2196f3",
+            text: "#ffffff"
+          },
+          openJsonButton: {
+            background: "#2196f3",
+            text: "#ffffff"
+          },
+          background: {
+            modal: "#1e1e1e",
+            section: "#2a2a2a"
+          },
+          text: "#e0e0e0",
+          subtitle: "#aaaaaa"
+        }
+      }
+    };
+
+    loadedThemes = [defaultTheme];
+  }

  populateThemeSelect(loadedThemes);

  const features = await window.electronAPI.getFeatures();
  const savedId = features.theme;
+
  const theme = loadedThemes.find(t => t.id === savedId) || loadedThemes[0];

  themeSelect.value = theme.id;
  applyTheme(theme);
 }

+/**
+ * Handles theme selection change from UI dropdown.
+ */
 themeSelect.addEventListener("change", (e) => {
  const theme = loadedThemes.find(t => t.id === e.target.value);
-  if (theme) {
-    applyTheme(theme);
-    saveTheme(theme.id);
-  }
+  if (!theme) return;
+
+  applyTheme(theme);
+  saveTheme(theme.id);
 });

+/**
+ * Reloads themes from backend and reapplies current selection.
+ */
 async function refreshThemes() {
  loadedThemes = await window.electronAPI.reloadThemes();
  populateThemeSelect(loadedThemes);

  const features = await window.electronAPI.getFeatures();
  const savedId = features.theme;
+
  const theme = loadedThemes.find(t => t.id === savedId) || loadedThemes[0];

  themeSelect.value = theme.id;
--- a/public/script/downloadstatus.js
+++ b/public/script/downloadstatus.js
@@ -2,9 +2,35 @@ const form = document.getElementById("downloadForm");
 const statusDiv = document.getElementById("downloadStatus");
 const button = form.querySelector("button[type=\"submit\"]");
 const stopBtn = document.getElementById("stopBtn");
+
+/**
+ * Indicates whether a download process is currently active.
+ * Used to prevent duplicate submissions and to gate UI actions
+ * such as disabling the form or showing progress.
+ */
 let isDownloading = false;
+
+/**
+ * Indicates whether the current download was explicitly
+ * stopped by the user via the cancel action.
+ *
+ * Used to differentiate between:
+ * - user-initiated cancellation
+ * - failures or natural completion
+ */
 let userStoppedDownload = false;

+
+
+/**
+ * Handles download form submission.
+ *
+ * - Validates user input (URL)
+ * - Disables UI during download
+ * - Sends request to backend `/download`
+ * - Manages success / error states
+ * - Restores UI state after completion
+ */
 form.addEventListener("submit", async (e) => {
  e.preventDefault();
  
@@ -61,6 +87,13 @@ form.addEventListener("submit", async (e) => {
  }
 });

+/**
+ * Displays initial download progress UI immediately
+ * when a download starts.
+ *
+ * Initializes progress bar, speed indicator, stage text
+ * and shows the stop button.
+ */
 function showInitialProgress() {
  const progressWrapper = document.getElementById("downloadProgressWrapper");
  const progressBarText = document.getElementById("downloadProgressText");
@@ -84,6 +117,14 @@ function showInitialProgress() {
  if (stopBtn) stopBtn.style.display = "inline-flex";
 }

+/**
+ * Cancels the current download process.
+ *
+ * Sends a request to backend `/download/cancel`,
+ * updates UI state and resets progress indicators.
+ *
+ * Prevents duplicate calls if no download is active.
+ */
 async function stopDownload() {
  if (!isDownloading) return;

@@ -109,6 +150,12 @@ async function stopDownload() {
  }
 }

+/**
+ * Resets all download progress UI elements to their
+ * default hidden state.
+ *
+ * Used after completion or cancellation of a download.
+ */
 function resetProgressBar() {
  const progressWrapper = document.getElementById("downloadProgressWrapper");
  if (progressWrapper) progressWrapper.style.display = "none";
--- a/public/script/fetchinfo.js
+++ b/public/script/fetchinfo.js
@@ -1,23 +1,44 @@
+/**
+ * Converts a raw upload date string (format YYYYMMDD)
+ * into a human-readable format (DD/MM/YYYY).
+ *
+ * Returns "Inconnue" if the input is invalid or malformed.
+ */
 function formatDate(dateStr) {
  if (!dateStr || dateStr.length !== 8) return "Inconnue";
  return `${dateStr.slice(6,8)}/${dateStr.slice(4,6)}/${dateStr.slice(0,4)}`;
 }

+/**
+ * Converts a file size in bytes into megabytes (MB).
+ *
+ * Returns a formatted string with 2 decimals (e.g. "12.34 Mo").
+ * If input is falsy, returns "Inconnue".
+ */
 function formatSize(bytes) {
  return bytes ? (bytes / (1024*1024)).toFixed(2) + " Mo" : "Inconnue";
 }

+/**
+ * Fetches video or playlist metadata from the backend `/info` endpoint.
+ *
+ * Sends a POST request with URL-encoded body.
+ * Handles network errors, HTTP errors and JSON parsing safely.
+ *
+ * @param {string} url - Video or playlist URL
+ * @returns {Promise<Object>} Parsed metadata or error object
+ */
 async function fetchVideoInfo(url) {
  try {
-    const res = await fetch("/info", {
-      method: "POST",
-      headers: { "Content-Type": "application/x-www-form-urlencoded" },
-      body: new URLSearchParams({ url }),
+    const res = await fetch(`/info?url=${encodeURIComponent(url)}`, {
+      method: "GET",
+      headers: {"Accept": "application/json"}
    });

-    if (!res.ok) return { error: `An Error occured when fetching info` };
-
    const data = await res.json();
+
+    if (!res.ok) return {error: `An Error occured when fetching info`};
+
    if (!data) return { error: "Data is Missing" };

    return data;
@@ -26,9 +47,19 @@ async function fetchVideoInfo(url) {
  }
 }

-
+/**
+ * Initializes the video info system UI.
+ *
+ * - Listens to URL input changes
+ * - Automatically fetches video/playlist metadata if enabled
+ * - Renders either playlist UI or single video UI
+ * - Handles loading states and caching (lastFetchedUrl)
+ *
+ * Also manages dynamic playlist title injection into the form.
+ */
 async function init() {

+  // Main input listener: triggers auto-fetch when URL changes
  document.addEventListener("DOMContentLoaded", () => {
    const urlInput = document.getElementById("UrlInput");
    const infoDiv = document.getElementById("videoInfo");
@@ -240,6 +271,6 @@ async function init() {

  })

-};
+}

 init();
--- a/public/script/progressBar.js
+++ b/public/script/progressBar.js
@@ -1,40 +1,65 @@
+/**
+ * DOM elements used for download progress UI rendering.
+ * These elements are updated in real-time via SSE streams.
+ */
 const progressWrapper = document.getElementById("downloadProgressWrapper");
 const progressBar = document.getElementById("downloadProgress");
-const progressBarText = document.getElementById("downloadProgressText")
+const progressBarText = document.getElementById("downloadProgressText");

 const speedElement = document.getElementById("downloadSpeedText");
 const stageElement = document.getElementById("downloadStage");
 const playlistInfoElement = document.getElementById("playlistInfoText");
+
+/**
+ * Server-Sent Events streams for real-time download updates.
+ * Each stream is responsible for a specific aspect of the download state.
+ */
 const speedEvt = new EventSource("/download/speed");
 const stageEvt = new EventSource("/download/stage");
 const playlistInfoEvt = new EventSource("/download/playlist-info");

+/**
+ * Resets the progress UI to its initial state.
+ * Hides all dynamic elements and clears displayed values.
+ */
 function startProgress() {
  progressBar.style.width = "0%";
  progressBarText.innerHTML = "0%";
  speedElement.innerHTML = "0 Mib/s";
 }

+/**
+ * Makes the progress UI visible and enables related controls
+ * such as the stop button.
+ */
 function showProgress() {
  progressWrapper.style.display = "block";
  progressBarText.style.display = "block";
  speedElement.style.display = "block";

-  // Show stop button
  const stopBtn = document.getElementById("stopBtn");
  if (stopBtn) stopBtn.style.display = "inline-flex";
 }

+/**
+ * Updates the progress bar UI with the given percentage.
+ * Automatically triggers UI visibility if not already shown.
+ *
+ * @param {number} percent - Download progress percentage (0–100)
+ */
 function updateProgress(percent) {
-  // Show progress div and stop button only when percent > 0
  if (percent > 0 && progressWrapper.style.display !== "block") {
    showProgress();
  }
-  
+
  progressBar.style.width = `${percent}%`;
  progressBarText.innerHTML = `${percent}%`;
 }

+/**
+ * Fully resets the progress UI and hides all download indicators.
+ * Called after completion or cancellation.
+ */
 function resetProgress() {
  progressBar.style.width = "0%";
  progressBarText.textContent = "";
@@ -50,13 +75,19 @@ function resetProgress() {
  playlistInfoElement.textContent = "";
  playlistInfoElement.style.display = "none";

-  // Hide stop button
  const stopBtn = document.getElementById("stopBtn");
  if (stopBtn) stopBtn.style.display = "none";
 }

-// SSE Connexion
+/**
+ * Main SSE stream handling download progress updates.
+ * Supports:
+ * - reset signal
+ * - done signal
+ * - percentage updates
+ */
 const evtSource = new EventSource("/download/progress");
+
 evtSource.onmessage = e => {
  if (e.data === "reset") {
    startProgress();
@@ -65,34 +96,41 @@ evtSource.onmessage = e => {
  }

  if (e.data === "done") {
-    // Keep progress bar visible for better UX, let toast handle the feedback
    setTimeout(() => {
      resetProgress();
-      window.electronAPI.setProgress(-1); 
-    }, 2000); // Wait 2s so user sees 100% progress
+      window.electronAPI.setProgress(-1);
+    }, 2000);
    return;
  }

  const percent = parseFloat(e.data);
-  
+
  if (!isNaN(percent)) {
    updateProgress(percent);
-    window.electronAPI.setProgress(percent); // Update Task Bar
-    // Don't hide at 100%, wait for "done" signal instead
+    window.electronAPI.setProgress(percent);
  }
 };

+/**
+ * SSE stream: download speed updates (e.g. "5.2 MiB/s").
+ */
 speedEvt.onmessage = e => {
  speedElement.style.display = "block";
-  speedElement.textContent = e.data; // ex: "5.2MiB/s"
+  speedElement.textContent = e.data;
 };

+/**
+ * SSE stream: download stage updates (e.g. downloading, merging, extracting).
+ */
 stageEvt.onmessage = e => {
  stageElement.style.display = "block";
-  stageElement.textContent = e.data; // ex: "📥 Downloading..."
+  stageElement.textContent = e.data;
 };

+/**
+ * SSE stream: playlist progress updates (e.g. "Item 1 of 15").
+ */
 playlistInfoEvt.onmessage = e => {
  playlistInfoElement.style.display = "block";
-  playlistInfoElement.textContent = e.data; // ex: "Item 1 of 15"
+  playlistInfoElement.textContent = e.data;
 };
--- a/public/script/settingsPanel.js
+++ b/public/script/settingsPanel.js
@@ -1,66 +1,105 @@
+/**
+ * Settings panel DOM elements used to control application feature flags
+ * and configuration UI interactions.
+ */
 const settingsPanel = document.getElementById("settings-panel");
 const settingsModal = document.querySelector(".settings-modal");
-
 const settingsButton = document.getElementById("settings-button");

+/**
+ * Tracks current settings panel state.
+ * NOTE: actual visibility is derived from DOM style in current implementation.
+ */
 let isOpen = false;

+/**
+ * Toggles visibility of the settings panel when clicking the settings button.
+ */
 settingsButton.addEventListener("click", () => {
-    const isOpen = settingsPanel.style.display === "block";
-    settingsPanel.style.display = isOpen ? "none" : "block";
+  const currentlyOpen = settingsPanel.style.display === "block";
+  settingsPanel.style.display = currentlyOpen ? "none" : "block";
 });

+/**
+ * Closes the settings panel and resets internal state.
+ */
 function closePanel() {
-    isOpen = false;
-    settingsPanel.style.display = "none";
+  isOpen = false;
+  settingsPanel.style.display = "none";
 }

-
+/**
+ * Loads feature flags from Electron backend and syncs them
+ * with corresponding UI controls (checkboxes, selects).
+ *
+ * Also registers change listeners to persist updates in real time.
+ */
 async function loadSettings() {
  const features = await window.electronAPI.getFeatures();

-  document.querySelectorAll(".settings-section input, .settings-section select").forEach(el => {
-    const key = el.dataset.key;
-    if (features[key] !== undefined) {
-      if (el.type === "checkbox") el.checked = features[key];
-      else if (el.tagName === "SELECT") el.value = features[key];
-    }
+  document
+    .querySelectorAll(".settings-section input, .settings-section select")
+    .forEach((el) => {
+      const key = el.dataset.key;
+      if (!key) return;

-    el.addEventListener("change", () => {
-      if (key === "theme") return;
-      let value = el.type === "checkbox" ? el.checked : el.value;
-      window.electronAPI.setFeature(key, value);
+      if (features[key] !== undefined) {
+        if (el.type === "checkbox") el.checked = features[key];
+        else if (el.tagName === "SELECT") el.value = features[key];
+      }
+
+      el.addEventListener("change", () => {
+        if (key === "theme") return;
+
+        const value = el.type === "checkbox" ? el.checked : el.value;
+        window.electronAPI.setFeature(key, value);
+      });
    });
-  });
 }

-// Open The JSON
-document.getElementById("open-json-btn").addEventListener("click", () => {
-  window.topbarAPI.openConfig();
+/**
+ * Opens configuration JSON file via Electron topbar API.
+ */
+document.getElementById("open-json-btn")
+  ?.addEventListener("click", () => {
+    window.topbarAPI.openConfig();
+  });
+
+/**
+ * Opens theme directory via Electron topbar API.
+ */
+document.getElementById("open-theme")
+  ?.addEventListener("click", () => {
+    window.topbarAPI.openTheme();
+  });
+
+/**
+ * Refreshes theme list and updates UI selector with a short animation.
+ */
+document.getElementById("refresh-themes-btn")
+  ?.addEventListener("click", function () {
+    this.classList.add("spinning");
+    window.refreshThemes();
+
+    setTimeout(() => {
+      this.classList.remove("spinning");
+    }, 600);
+  });
+
+/**
+ * Clicking the overlay outside the modal closes the settings panel.
+ */
+settingsPanel?.addEventListener("click", closePanel);
+
+/**
+ * Prevents modal clicks from closing the settings panel
+ * by stopping event propagation to the overlay.
+ */
+settingsModal?.addEventListener("click", (e) => {
+  e.stopPropagation();
 });

-// Open Theme Folder
-document.getElementById("open-theme").addEventListener("click", () => {
-  window.topbarAPI.openTheme();
-});
-
-// Refresh Themes
-document.getElementById("refresh-themes-btn").addEventListener("click", function() {
-  this.classList.add("spinning");
-  window.refreshThemes();
-  
-  setTimeout(() => {
-    this.classList.remove("spinning");
-  }, 600);
-});
-
-
-/* clic sur l'overlay = fermer */
-settingsPanel.addEventListener("click", closePanel);
-
-/* clic dans la modal = stop propagation */
-settingsModal.addEventListener("click", (e) => {
-    e.stopPropagation();
-});
-
-loadSettings();
+/**
+ * Initializes settings UI by loading backend feature flags.
+ */
+loadSettings();
--- a/public/script/toast.js
+++ b/public/script/toast.js
@@ -1,17 +1,26 @@
-window.showToast = function(message, type = 'info', duration = 4000) {
-  const container = document.getElementById('toast-container');
-  if (!container) return;
+/**
+ * Displays a toast notification in the global UI container.
+ *
+ * Toasts are automatically appended to `#toast-container`,
+ * support multiple visual types, and can auto-dismiss after a delay.
+ *
+ * @param {string} message - Message displayed inside the toast
+ * @param {"success"|"error"|"warning"|"info"} [type="info"] - Visual style of the toast
+ * @param {number} [duration=4000] - Auto-dismiss delay in milliseconds (0 disables auto removal)
+ * @returns {HTMLElement|null} The created toast element or null if container is missing
+ */
+window.showToast = function (message, type = "info", duration = 4000) {
+  const container = document.getElementById("toast-container");
+  if (!container) return null;

-  // Create toast element
-  const toast = document.createElement('div');
-  toast.classList.add('toast', type);
+  const toast = document.createElement("div");
+  toast.classList.add("toast", type);

-  // Icons for different types
  const icons = {
-    success: '✓',
-    error: '✕',
-    warning: '⚠',
-    info: 'ℹ'
+    success: "✓",
+    error: "✕",
+    warning: "⚠",
+    info: "ℹ"
  };

  const icon = icons[type] || icons.info;
@@ -22,14 +31,11 @@ window.showToast = function(message, type = 'info', duration = 4000) {
    <button class="toast-close" title="Close">×</button>
  `;

-  // Add close functionality
-  const closeBtn = toast.querySelector('.toast-close');
-  closeBtn.addEventListener('click', () => removeToast(toast));
+  const closeBtn = toast.querySelector(".toast-close");
+  closeBtn.addEventListener("click", () => removeToast(toast));

-  // Add to container
  container.appendChild(toast);

-  // Auto remove after duration
  if (duration > 0) {
    setTimeout(() => removeToast(toast), duration);
  }
@@ -37,18 +43,41 @@ window.showToast = function(message, type = 'info', duration = 4000) {
  return toast;
 };

+/**
+ * Removes a toast element with a small exit animation.
+ *
+ * @param {HTMLElement} toast
+ */
 function removeToast(toast) {
-  if (!toast.parentElement) return;
-  
-  toast.classList.add('removing');
+  if (!toast?.parentElement) return;
+
+  toast.classList.add("removing");
+
  setTimeout(() => {
-    if (toast.parentElement) {
-      toast.remove();
-    }
+    toast.remove();
  }, 300);
 }

-window.showSuccess = (message, duration = 4000) => window.showToast(message, 'success', duration);
-window.showError = (message, duration = 5000) => window.showToast(message, 'error', duration);
-window.showWarning = (message, duration = 4000) => window.showToast(message, 'warning', duration);
-window.showInfo = (message, duration = 4000) => window.showToast(message, 'info', duration);
+/**
+ * Shortcut: success toast
+ */
+window.showSuccess = (message, duration = 4000) =>
+  window.showToast(message, "success", duration);
+
+/**
+ * Shortcut: error toast
+ */
+window.showError = (message, duration = 5000) =>
+  window.showToast(message, "error", duration);
+
+/**
+ * Shortcut: warning toast
+ */
+window.showWarning = (message, duration = 4000) =>
+  window.showToast(message, "warning", duration);
+
+/**
+ * Shortcut: info toast
+ */
+window.showInfo = (message, duration = 4000) =>
+  window.showToast(message, "info", duration);
--- a/public/script/topbar.js
+++ b/public/script/topbar.js
@@ -1,16 +1,22 @@
-// Ajout des listeners pour la topbar
+/**
+ * Initializes topbar button event listeners and binds them
+ * to the Electron preload API exposed in `window.topbarAPI`.
+ *
+ * This function is safe to call once DOM is ready.
+ * It silently aborts if the API or elements are missing.
+ */
 function setupTopbarListeners() {
  const { topbarAPI } = window;
  if (!topbarAPI) return;
-  
-  const minBtn = document.getElementById('minimize-btn');
-  const maxBtn = document.getElementById('maximize-btn');
-  const closeBtn = document.getElementById('close-btn');
-  const devtoolsBtn = document.getElementById('devtools-btn');
-  const logsBtn = document.getElementById('logs-btn');
-  const websiteBtn = document.getElementById('website-btn');
-  const wikiBtn = document.getElementById('wiki-btn');
-  const workshopBtn = document.getElementById('workshop-btn');
+
+  const minBtn = document.getElementById("minimize-btn");
+  const maxBtn = document.getElementById("maximize-btn");
+  const closeBtn = document.getElementById("close-btn");
+  const devtoolsBtn = document.getElementById("devtools-btn");
+  const logsBtn = document.getElementById("logs-btn");
+  const websiteBtn = document.getElementById("website-btn");
+  const wikiBtn = document.getElementById("wiki-btn");
+  const workshopBtn = document.getElementById("workshop-btn");

  if (minBtn) minBtn.onclick = () => topbarAPI.minimize();
  if (maxBtn) maxBtn.onclick = () => topbarAPI.maximize();
@@ -22,12 +28,30 @@ function setupTopbarListeners() {
  if (workshopBtn) workshopBtn.onclick = () => topbarAPI.openWorkshop();
 }

-document.addEventListener('DOMContentLoaded', setupTopbarListeners);
+/**
+ * Registers topbar event listeners after DOM is fully loaded.
+ */
+document.addEventListener("DOMContentLoaded", setupTopbarListeners);

-const features = await window.electronAPI.getFeatures();
+/**
+ * Applies UI layout adjustments depending on feature flags
+ * provided by the Electron backend.
+ *
+ * Specifically handles:
+ * - hiding custom topbar
+ * - adjusting layout spacing
+ * - repositioning theme switcher
+ */
+(async function applyFeatureLayout() {
+  const features = await window.electronAPI.getFeatures();

-if(!features.customTopBar){
-  document.getElementById("topbar").style.display = "none"; 
-  document.getElementById("container").style.marginTop = "0";
-  document.getElementById("theme-switcher").style.top = "30px";  
-} 
+  if (!features.customTopBar) {
+    const topbar = document.getElementById("topbar");
+    const container = document.getElementById("container");
+    const themeSwitcher = document.getElementById("theme-switcher");
+
+    if (topbar) topbar.style.display = "none";
+    if (container) container.style.marginTop = "0";
+    if (themeSwitcher) themeSwitcher.style.top = "30px";
+  }
+})();
--- a/public/styles/layout/form.css
+++ b/public/styles/layout/form.css
@@ -40,8 +40,7 @@ form button:hover {
 form#downloadForm {
    display: flex;
    gap: 0.5em;
-    max-width: 600px;
-    width: 100%;
+    width: 350px;
    justify-content: center;
 }

--- a/public/styles/styles.css
+++ b/public/styles/styles.css
@@ -16,6 +16,14 @@
@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');


+/* Mark element as disabled */
+.disabled {
+  pointer-events: none;
+  opacity: 0.5;
+  filter: grayscale(40%);
+  cursor: not-allowed;
+}
+
 /* Because why not */
 #reference{
  position: fixed;
--- a/resources/binaries/linux/yt-dlp
+++ b/resources/binaries/linux/yt-dlp
--- a/resources/binaries/win-32/yt-dlp.exe
+++ b/resources/binaries/win-32/yt-dlp.exe
--- a/scripts/create-copr-package.sh
+++ b/scripts/create-copr-package.sh
@@ -0,0 +1,116 @@
+#!/bin/bash
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+VERSION=$(node -p "require('$ROOT_DIR/package.json').version")
+RPM_OUT="$ROOT_DIR/dist/freedom-loader-${VERSION}.x86_64.rpm"
+
+# ------------------------------------------------------------
+# Resolve fpm from electron-builder cache
+# Excludes Ruby gem wrappers, targets standalone binaries only
+# Prefers fpm@2.x over legacy fpm-1.9.x
+# ------------------------------------------------------------
+FPM=$(find ~/.cache/electron-builder -name "fpm" -type f 2>/dev/null \
+    | grep -v "/gems/bin/fpm" \
+    | grep -v "/gems/gems/" \
+    | grep -v "/lib/app/bin/fpm" \
+    | grep "fpm@" \
+    | head -1)
+
+# Fallback to legacy fpm-1.9.x if fpm@2.x not found
+if [ -z "$FPM" ]; then
+    FPM=$(find ~/.cache/electron-builder -name "fpm" -type f 2>/dev/null \
+        | grep -v "/gems/" \
+        | grep -v "/lib/app/bin/fpm" \
+        | head -1)
+fi
+
+if [ -z "$FPM" ]; then
+    echo "Error: fpm not found in electron-builder cache. Run 'npm run build:linux' once first to download it."
+    exit 1
+fi
+
+echo "Using fpm: $FPM"
+
+# Check that linux-unpacked exists
+if [ ! -d "$ROOT_DIR/dist/linux-unpacked" ]; then
+    echo "Error: dist/linux-unpacked not found. Run 'npm run build:linux' first."
+    exit 1
+fi
+
+# ------------------------------------------------------------
+# Prepare staging files
+# fpm requires exact file-to-destination mappings to avoid
+# scanning system directories (which causes permission errors)
+# ------------------------------------------------------------
+
+# Shell wrapper for /usr/bin/freedom-loader
+TMP_WRAPPER="$ROOT_DIR/.rpm-pkg-tmp-wrapper"
+mkdir -p "$TMP_WRAPPER"
+cat > "$TMP_WRAPPER/freedom-loader" << 'EOF'
+#!/bin/sh
+exec /opt/freedom-loader/freedom-loader "$@"
+EOF
+chmod +x "$TMP_WRAPPER/freedom-loader"
+
+# Desktop entry file
+TMP_DESKTOP="$ROOT_DIR/.rpm-pkg-tmp-desktop"
+mkdir -p "$TMP_DESKTOP"
+cat > "$TMP_DESKTOP/freedom-loader.desktop" << 'EOF'
+[Desktop Entry]
+Name=Freedom Loader
+Exec=/opt/freedom-loader/freedom-loader %U
+Icon=freedom-loader
+Type=Application
+Categories=AudioVideo;Utility;Network;
+Comment=Free and open-source GUI for yt-dlp
+StartupWMClass=Freedom Loader
+EOF
+
+# ------------------------------------------------------------
+# Step 1 - Build .rpm from linux-unpacked via fpm
+# ------------------------------------------------------------
+echo "Building RPM..."
+"$FPM" -s dir -t rpm --force \
+    --rpm-use-file-permissions \
+    --name freedom-loader \
+    --version "$VERSION" \
+    --architecture x86_64 \
+    --description "Free and open-source GUI for yt-dlp" \
+    --url "https://masteracnolo.github.io/Freedom-Loader-Site/" \
+    --maintainer "MasterAcnolo <MasterAcnolo@users.noreply.github.com>" \
+    --license "GPL-3.0-only" \
+    --depends gtk3 \
+    --depends nss \
+    --depends libXScrnSaver \
+    --depends at-spi2-core \
+    --rpm-attr "4755,root,root:/opt/freedom-loader/chrome-sandbox" \
+    --package "$RPM_OUT" \
+    "$ROOT_DIR/dist/linux-unpacked/=/opt/freedom-loader" \
+    "$TMP_WRAPPER/freedom-loader=/usr/bin/freedom-loader" \
+    "$TMP_DESKTOP/freedom-loader.desktop=/usr/share/applications/freedom-loader.desktop" \
+    "$ROOT_DIR/build/app-icon.png=/usr/share/icons/hicolor/512x512/apps/freedom-loader.png" \
+    "$ROOT_DIR/package/com.masteracnolo.freedomloader.metainfo.xml=/usr/share/metainfo/com.masteracnolo.freedomloader.metainfo.xml"
+
+rm -rf "$TMP_WRAPPER" "$TMP_DESKTOP"
+echo "RPM built: $RPM_OUT"
+
+# ------------------------------------------------------------
+# Step 2 - Build SRPM for COPR
+# Wraps the .rpm above into a source RPM for COPR submission
+# ------------------------------------------------------------
+echo "Building SRPM for COPR..."
+mkdir -p "$ROOT_DIR/srpm-out"
+
+TMP_DIR="$ROOT_DIR/.copr-build-tmp"
+mkdir -p "$TMP_DIR"
+TMP_SPEC="$TMP_DIR/freedom-loader.spec"
+sed "s/__VERSION__/$VERSION/g" "$ROOT_DIR/package/freedom-loader.spec" > "$TMP_SPEC"
+
+rpmbuild -bs "$TMP_SPEC" \
+    --define "_sourcedir $ROOT_DIR/dist" \
+    --define "_srcrpmdir $ROOT_DIR/srpm-out"
+
+rm -rf "$TMP_DIR"
+echo "SRPM built: $ROOT_DIR/srpm-out/freedom-loader-$VERSION-1*.src.rpm"
--- a/scripts/release.sh
+++ b/scripts/release.sh
@@ -0,0 +1,187 @@
+#!/bin/bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+VERSION=$(node -p "require('$ROOT_DIR/package.json').version")
+TAG="$VERSION"
+
+# Parse arguments
+PUBLISH_SNAP=false
+PUBLISH_COPR=false
+DRY_RUN=false
+
+for arg in "$@"; do
+    case $arg in
+        --snap)    PUBLISH_SNAP=true ;;
+        --copr)    PUBLISH_COPR=true ;;
+        --publish) PUBLISH_SNAP=true; PUBLISH_COPR=true ;;
+        --dry-run) DRY_RUN=true ;;
+        *) echo "⚠️ Argument inconnu : $arg" ; exit 1 ;;
+    esac
+done
+
+echo ""
+echo "============================================"
+echo "  Freedom Loader - Release Pipeline"
+echo "  Version  : $VERSION"
+echo "  Tag      : $TAG"
+echo "  Snap     : $PUBLISH_SNAP"
+echo "  COPR     : $PUBLISH_COPR"
+echo "  Dry run  : $DRY_RUN"
+echo "============================================"
+echo ""
+
+# ------------------------------------------------------------
+# Step 0.1 - Check Dependencies
+# ------------------------------------------------------------
+echo "[0/5] Checking dependencies..."
+
+command -v gh >/dev/null 2>&1 || { echo "'gh' CLI missing, need to be installed (https://cli.github.com/)."; exit 1; }
+
+if [ "$PUBLISH_SNAP" = true ] && [ "$DRY_RUN" = false ]; then
+    command -v snapcraft >/dev/null 2>&1 || { echo "'snapcraft' missing, need to be installed."; exit 1; }
+fi
+
+if [ "$PUBLISH_COPR" = true ] && [ "$DRY_RUN" = false ]; then
+    command -v copr-cli >/dev/null 2>&1 || { echo "'copr-cli' missing, need to be installed."; exit 1; }
+fi
+
+echo "All dependencies found"
+
+# ------------------------------------------------------------
+# Step 0.2 - Clean Workspace
+# ------------------------------------------------------------
+echo "[0/5] Cleaning workspace..."
+# On supprime les dossiers générés lors des builds précédents
+rm -rf "$ROOT_DIR/dist" "$ROOT_DIR/srpm-out"
+echo "Workspace cleaned (dist/ and srpm-out/ removed)"
+
+# ------------------------------------------------------------
+# Step 1 - Build Linux packages (AppImage, deb, snap)
+# ------------------------------------------------------------
+echo "[1/5] Building Linux packages..."
+cd "$ROOT_DIR"
+npm run build:linux
+echo "Linux packages built"
+
+# ------------------------------------------------------------
+# Step 2 - Build RPM binary + SRPM for COPR
+# Uses the create-copr-package.sh script which handles:
+# - fpm binary resolution from electron-builder cache
+# - .rpm generation from linux-unpacked
+# - .src.rpm generation for COPR submission
+# ------------------------------------------------------------
+echo "[2/5] Building RPM and SRPM..."
+bash "$ROOT_DIR/scripts/create-copr-package.sh"
+echo "RPM and SRPM built"
+
+# ------------------------------------------------------------
+# Step 3 - Build Windows installer
+# Note: requires Windows binaries to be present locally under
+# resources/binaries/win-32/ (not committed to the repo)
+# ------------------------------------------------------------
+echo "[3/5] Building Windows installer..."
+npm run build:win
+echo " Windows installer built"
+
+# ------------------------------------------------------------
+# Step 4 - Create a draft release on GitHub
+# Release notes are pre-filled with the standard template.
+# Edit and publish manually from the GitHub web interface.
+# Requires gh CLI to be installed and authenticated.
+# ------------------------------------------------------------
+echo "[4/5] Creating GitHub draft release $TAG..."
+
+# Utilise une méthode un peu plus robuste pour trouver l'ancien tag (ignore le HEAD actuel s'il est déjà tagué)
+PREV_TAG=$(git rev-list --tags --skip=1 --max-count=1 | xargs git describe --tags 2>/dev/null || echo "previous")
+
+RELEASE_NOTES="# Freedom Loader - $VERSION
+
+## Found a bug or issue?
+Please report it in the [GitHub Issues](https://github.com/MasterAcnolo/Freedom-Loader/issues) section.
+
+## Next Release (non-exhaustive roadmap)
+- More format options
+- Subtitle support
+- Improved UI / UX
+- Language selection
+- Download specific parts of videos
+- File renaming options
+- Parallel downloads
+- Skip sponsored parts automatically
+
+**Full Changelog**: https://github.com/MasterAcnolo/Freedom-Loader/compare/${PREV_TAG}...${TAG}"
+
+if [ "$DRY_RUN" = false ]; then
+    gh release create "$TAG" \
+        --title "$TAG" \
+        --notes "$RELEASE_NOTES" \
+        --draft \
+        "$ROOT_DIR/dist/Freedom-Loader-Setup-${VERSION}.exe" \
+        "$ROOT_DIR/dist/Freedom-Loader-Setup-${VERSION}.exe.blockmap" \
+        "$ROOT_DIR/dist/freedom-loader-${VERSION}.x86_64.rpm" \
+        "$ROOT_DIR/dist/freedom-loader_${VERSION}_amd64.deb" \
+        "$ROOT_DIR/dist/Freedom Loader-${VERSION}.AppImage" \
+        "$ROOT_DIR/dist/freedom-loader_${VERSION}_amd64.snap" \
+        "$ROOT_DIR/dist/latest.yml" \
+        "$ROOT_DIR/dist/latest-linux.yml"
+    echo "Draft release created: https://github.com/MasterAcnolo/Freedom-Loader/releases"
+else
+    echo "  [DRY RUN] gh release create $TAG (skipped)"
+fi
+
+# ------------------------------------------------------------
+# Step 5 - Publish to package stores
+# Snap and COPR are opt-in via --snap, --copr, or --publish.
+# Without these flags, this step is skipped entirely.
+# Run after the GitHub release is published (not the draft),
+# so store users always get the same version as GitHub users.
+# ------------------------------------------------------------
+echo "[5/5] Publishing to package stores..."
+
+if [ "$PUBLISH_SNAP" = true ]; then
+    echo "  Publishing to Snap Store..."
+    if [ "$DRY_RUN" = false ]; then
+        export PATH=$PATH:/var/lib/snapd/snap/bin
+        snapcraft upload \
+            "$ROOT_DIR/dist/freedom-loader_${VERSION}_amd64.snap" \
+            --release=stable
+        echo " Snap published"
+    else
+        echo "  [DRY RUN] snapcraft upload (skipped)"
+    fi
+else
+    echo "  Snap: skipped (use --snap or --publish to enable)"
+fi
+
+if [ "$PUBLISH_COPR" = true ]; then
+    echo "  Publishing to COPR..."
+    if [ "$DRY_RUN" = false ]; then
+        copr-cli build freedom-loader \
+            "$ROOT_DIR/srpm-out/freedom-loader-${VERSION}-1"*.src.rpm
+        echo "COPR build triggered"
+    else
+        echo "  [DRY RUN] copr-cli build (skipped)"
+    fi
+else
+    echo "  COPR: skipped (use --copr or --publish to enable)"
+fi
+
+# ------------------------------------------------------------
+# Done - Summary
+# ------------------------------------------------------------
+echo ""
+echo "============================================"
+echo "  Release pipeline complete."
+echo ""
+echo "  Next steps:"
+echo "  1. Fill in the release notes on GitHub"
+echo "  2. Publish the draft release"
+if [ "$PUBLISH_SNAP" = false ] || [ "$PUBLISH_COPR" = false ]; then
+echo ""
+echo "  Store publishing (not done yet):"
+[ "$PUBLISH_SNAP" = false ] && echo "  - Snap  : bash scripts/release.sh --snap"
+[ "$PUBLISH_COPR" = false ] && echo "  - COPR  : bash scripts/release.sh --copr"
+fi
+echo "============================================"
--- a/server/controller/download.controller.js
+++ b/server/controller/download.controller.js
@@ -4,11 +4,47 @@ const { isValidUrl, isSafePath } = require("../helpers/validation.helpers");
 const { notifyDownloadFinished } = require("../helpers/notify.helpers");
 const { configFeatures } = require("../../config");

-const listeners = [];
-const speedListeners = [];
-const stageListeners = [];
-const playlistInfoListeners = [];
+/**
+ * Active Server-Sent Event subscribers receiving
+ * download progress updates.
+ *
+ * Each listener receives a percentage value between
+ * 0 and 100 during the download lifecycle.
+ */
+const progressListeners = [];

+/**
+ * Active Server-Sent Event subscribers receiving
+ * download speed updates.
+ */
+const speedListeners = [];
+
+/**
+ * Active Server-Sent Event subscribers receiving
+ * download stage updates.
+ */
+const stageListeners = [];
+
+/**
+ * Active Server-Sent Event subscribers receiving
+ * playlist progress information.
+ */
+const playlistListeners = [];
+
+/**
+ * Handles download requests and starts a yt-dlp download.
+ *
+ * Validates user input, prepares download options and
+ * delegates the download process to the download service.
+ *
+ * Once the download completes successfully, a desktop
+ * notification may be displayed depending on the
+ * application configuration.
+ *
+ * @param {import("express").Request} req
+ * @param {import("express").Response} res
+ * @returns {Promise<void>}
+ */
 async function downloadController(req, res) {
  try {
    const options = {
@@ -25,17 +61,30 @@ async function downloadController(req, res) {
      return res.status(400).send("Save Path Not Allowed.");
    }

-    // Get output folder when the download is finished
-    const outputFolder = await fetchDownload(options, listeners, speedListeners, stageListeners, playlistInfoListeners);
+    const outputFolder = await fetchDownload(
+      options,
+      progressListeners,
+      speedListeners,
+      stageListeners,
+      playlistListeners
+    );
+    
    notifyDownloadFinished(outputFolder, configFeatures.notifySystem);
    res.send("Download Done !");
    
  } catch (err) {
-    logger.error(`Server Error in /download : ${err.message}`);
-    res.status(500).send(`Server Error`);
+    logger.error(`Server Error in /download: ${err?.message ?? err}`);
+    res.status(500).send("Server Error");
  }
 }

+/**
+ * Opens a Server-Sent Events (SSE) connection used to
+ * stream download progress updates to the client.
+ *
+ * @param {import("express").Request} req
+ * @param {import("express").Response} res
+ */
 function progressController(req, res) {
  res.set({
    'Content-Type': 'text/event-stream',
@@ -44,14 +93,21 @@ function progressController(req, res) {
  });

  const sendProgress = percent => res.write(`data: ${percent}\n\n`);
-  listeners.push(sendProgress);
+  progressListeners.push(sendProgress);

  req.on('close', () => {
-    listeners.splice(listeners.indexOf(sendProgress), 1);
+    progressListeners.splice(progressListeners.indexOf(sendProgress), 1);
    res.end();
  });
 }

+/**
+ * Opens a Server-Sent Events (SSE) connection used to
+ * stream download speed updates to the client.
+ *
+ * @param {import("express").Request} req
+ * @param {import("express").Response} res
+ */
 function speedController(req, res) {
  res.set({
    'Content-Type': 'text/event-stream',
@@ -68,6 +124,14 @@ function speedController(req, res) {
  });
 }

+/**
+ * Opens a Server-Sent Events (SSE) connection used to
+ * stream download stage updates such as downloading,
+ * merging, extracting audio or embedding metadata.
+ *
+ * @param {import("express").Request} req
+ * @param {import("express").Response} res
+ */
 function stageController(req, res) {
  res.set({
    'Content-Type': 'text/event-stream',
@@ -84,6 +148,14 @@ function stageController(req, res) {
  });
 }

+/**
+ * Cancels the currently running download process.
+ *
+ * Returns an error response if no download is active.
+ *
+ * @param {import("express").Request} req
+ * @param {import("express").Response} res
+ */
 function cancelDownloadController(req, res) {
  const cancelled = cancelDownload();
  if (cancelled) {
@@ -95,6 +167,18 @@ function cancelDownloadController(req, res) {
  }
 }

+/**
+ * Opens a Server-Sent Events (SSE) connection used to
+ * stream playlist progress information to the client.
+ *
+ * Example:
+ * - Item 1 of 20
+ * - Item 12 of 20
+ * - Item 20 of 20
+ *
+ * @param {import("express").Request} req
+ * @param {import("express").Response} res
+ */
 function playlistInfoController(req, res) {
  res.set({
    'Content-Type': 'text/event-stream',
@@ -103,10 +187,10 @@ function playlistInfoController(req, res) {
  });

  const sendPlaylistInfo = info => res.write(`data: ${info}\n\n`);
-  playlistInfoListeners.push(sendPlaylistInfo);
+  playlistListeners.push(sendPlaylistInfo);

  req.on('close', () => {
-    playlistInfoListeners.splice(playlistInfoListeners.indexOf(sendPlaylistInfo), 1);
+    playlistListeners.splice(playlistListeners.indexOf(sendPlaylistInfo), 1);
    res.end();
  });
 }
--- a/server/controller/info.controller.js
+++ b/server/controller/info.controller.js
@@ -3,70 +3,127 @@ const { parseVideo, parsePlaylist } = require("../helpers/parseInfo.helpers");
 const { logger } = require("../logger");
 const { isValidUrl } = require("../helpers/validation.helpers");

-async function infoController(req, res){
+/**
+ * Handles metadata retrieval for a video or playlist.
+ *
+ * This controller:
+ * - Validates incoming URL (query or body)
+ * - Calls yt-dlp metadata extraction service
+ * - Detects playlist vs single video context
+ * - Applies fallback strategy if playlist extraction fails
+ * - Returns normalized parsed response (video or playlist)
+ *
+ * @param {import("express").Request} req
+ * @param {import("express").Response} res
+ */
+async function infoController(req, res) {

-    const url = req.body.url || req.query.url; // POST et GET
+    // Previously, i support both POST and GET element, but it's kinda weird. So now it only support GET.
+    const url = req.query.url;
+    const encodedUrl = encodeURIComponent(url)

-
-    // If no url, non-string url or invalid url
-
-    if (!url || typeof url !== "string" || !isValidUrl(url)) return res.status(400).send("Invalid URL Or Missing");
-
-    logger.info(`/Info Request receive by the Info Controller. URL: ${url}`);
-
-    if (url.includes("&list") || url.includes("?list")) {
-        logger.info("Estimated Data Type: Playlist")
-
-    } else{
-        logger.info("Estimated Data Type: Video")
+    /**
+     * Basic validation:
+     * - URL must exist
+     * - Must be a string
+     * - Must pass custom URL validation
+     */
+    if (!url || typeof url !== "string" || !isValidUrl(url)) {
+        return res.status(400).send("Invalid URL Or Missing");
    }

-    try {
-    let data;
-    let fetchError = null;
+    logger.info(`Info request received. RAW URL: ${url}`);
+    logger.info(`Info request received. ENCODED: ${encodedUrl}`);
+
+    // Lightweight heuristic to detect playlist URLs. It works for Youtube.
+    const isPlaylistUrl = url.includes("&list") || url.includes("?list");
+
+    logger.info(
+        isPlaylistUrl
+            ? "Estimated Data Type: Playlist"
+            : "Estimated Data Type: Video"
+    );

    try {
-        data = await fetchInfo(url);
-    } catch (err) {
-        fetchError = err;
-        
-        // If it's a playlist URL and fetch failed, try fetching just the single video
-        if ((url.includes("&list") || url.includes("?list"))) {
-            logger.info(`Playlist fetch failed: ${err.message}. Retrying with single video...`);
-            
-            // Remove the &list parameter
-            const singleVideoUrl = url.split("&list")[0].split("?list")[0];
-            
-            try {
-                data = await fetchInfo(singleVideoUrl);
-                logger.info(`Single video fetch succeeded after playlist failure`);
-            } catch (retryErr) {
-                logger.error(`Single video fetch also failed: ${retryErr.message}`);
-                throw err; // Throw the original error
+        let data;
+
+        /**
+         * Primary metadata fetch attempt
+         */
+        try {
+            data = await fetchInfo(url);
+        } catch (err) {
+
+            /**
+             * Fallback strategy:
+             * If playlist extraction fails, retry as single video
+             */
+            if (isPlaylistUrl) {
+
+                logger.info(
+                    `Playlist fetch failed: ${err.message}. Retrying as single video...`
+                );
+
+                // Remove playlist query parameter (best-effort cleanup)
+                const singleVideoUrl = url.split("&list")[0].split("?list")[0];
+
+                try {
+                    data = await fetchInfo(singleVideoUrl);
+                    logger.info("Single video fetch succeeded after playlist failure");
+                } catch (retryErr) {
+                    logger.error(
+                        `Single video fetch also failed: ${retryErr.message}`
+                    );
+
+                    // Preserve original error context
+                    throw err;
+                }
+
+            } else {
+                throw err;
            }
-        } else {
-            throw err;
        }
-    }

-    if (data._type === "playlist") {
+        /**
+         * Normalize response based on yt-dlp output type
+         */
+        if (data._type === "playlist") {

-        const playlist = parsePlaylist(data);
-        logger.info(`Playlist : ${playlist.title} (${playlist.count} vidéos)`);
-        return res.json(playlist);
+            // If the playlist got only one video, show it as a video.
+            if (data.entries && data.entries.length === 1) {

-    } else{
-        const video = parseVideo(data);
-        logger.info(`Unique Video: ${video.title}`);
-        return res.json(video);
-    }
+                const singleVideo = parseVideo(data.entries[0]);

+                logger.info(`Playlist with 1 item converted to video: ${singleVideo.title}`);
+
+                return res.json(singleVideo);
+            }
+
+            const playlist = parsePlaylist(data);
+
+            logger.info(
+                `Playlist fetched: ${playlist.title} (${playlist.count} videos)`
+            );
+
+            return res.json(playlist);
+
+        } else {
+
+            const video = parseVideo(data);
+
+            logger.info(`Video fetched: ${video.title}`);
+
+            return res.json(video);
+        }

    } catch (err) {
-        logger.error(`Info controller error: ${err && err.message ? err.message : err}`);
-        return res.status(500).send(`Unable to fetch info`);
+
+        logger.error(
+            `Info controller error: ${err && err.message ? err.message : err}`
+        );
+
+        return res.status(500).send("Unable to fetch info");
    }
-    
 }

-module.exports = {infoController};
+module.exports = { infoController };
--- a/server/helpers/buildArgs.helpers.js
+++ b/server/helpers/buildArgs.helpers.js
@@ -5,6 +5,26 @@ const { ffmpegPath, denoPath} = require("./path.helpers.js");
 const { configFeatures } = require("../../config.js");
 const { logger } = require("../logger.js");

+/**
+ * Validates whether the provided codec is supported by the application.
+ *
+ * If the codec is supported, it is returned unchanged.
+ * Otherwise, a warning is logged and the default codec ("h264")
+ * is returned as a fallback.
+ *
+ * Supported codecs:
+ * - av01
+ * - vp9.2
+ * - vp9
+ * - h265
+ * - h264
+ * - vp8
+ * - h263
+ * - theora
+ *
+ * @param {string} codec - Codec identifier to validate.
+ * @returns {string} A valid codec identifier.
+ */
 function validateCodec(codec){

  const validCodec = [
@@ -20,7 +40,29 @@ function validateCodec(codec){
  }
 }

-function buildYtDlpArgs({ url, audioOnly, quality, outputFolder }) {
+/**
+ * Builds the complete yt-dlp argument list based on the
+ * application configuration and download options.
+ *
+ * The generated arguments include:
+ * - Browser cookie extraction
+ * - FFmpeg integration
+ * - Deno runtime configuration
+ * - Metadata and thumbnail embedding
+ * - Playlist handling
+ * - Video/audio format selection
+ * - Quality filtering
+ * - Output file destination
+ *
+ * @param {Object} options - Download configuration.
+ * @param {string} options.url - Video or playlist URL.
+ * @param {boolean} options.audioOnly - Whether to extract audio only.
+ * @param {string} options.quality - Requested quality preset.
+ * @param {string} options.outputFolder - Download destination folder.
+ *
+ * @returns {string[]} Array of arguments ready to be passed to yt-dlp.
+ */
+function buildYtDlpArgs({url, audioOnly, quality, outputFolder, isPlaylist}) {

  logger.info("--- CONFIGURATION ---");

@@ -28,6 +70,7 @@ function buildYtDlpArgs({ url, audioOnly, quality, outputFolder }) {
  logger.info(`CONFIG discordRPC: ${configFeatures.discordRPC}`);
  logger.info(`CONFIG customTopBar: ${configFeatures.customTopBar}`);
  logger.info(`CONFIG autoCheckInfo: ${configFeatures.autoCheckInfo}`);
+  logger.info(`CONFIG keepPlaylistOrder: ${configFeatures.keepPlaylistOrder}`);
  logger.info(`CONFIG addThumbnail: ${configFeatures.addThumbnail}`);
  logger.info(`CONFIG addMetadata: ${configFeatures.addMetadata}`);
  logger.info(`CONFIG verboseLogs: ${configFeatures.verboseLogs}`);
@@ -75,7 +118,19 @@ function buildYtDlpArgs({ url, audioOnly, quality, outputFolder }) {
  };

  args.push("-f", qualityMap[quality] || "best");
-  args.push("-o", path.join(outputFolder, "%(title)s.%(ext)s"));
+
+  /**
+   * Default title output template
+   * @type {string}
+   */
+  let outputTemplate = "%(title)s.%(ext)s";
+
+  // If it's a playlist, and we want to keep the playlist order. Add an index before the title.
+  if (isPlaylist && configFeatures.keepPlaylistOrder && configFeatures.autoDownloadPlaylist) {
+    outputTemplate = "%(playlist_index)02d - %(title)s.%(ext)s";
+  }
+
+  args.push("-o", path.join(outputFolder, outputTemplate));
  args.push(url);

  return args.filter(Boolean);
--- a/server/helpers/getBrowser.helpers.js
+++ b/server/helpers/getBrowser.helpers.js
@@ -4,12 +4,36 @@ const path = require("path");
 const notify = require("./notify.helpers")
 const { logger } = require("../logger");

+/**
+ * Detects the first supported browser installed on the system.
+ *
+ * The detected browser is used by yt-dlp to import authentication
+ * cookies when required by certain platforms.
+ *
+ * Currently, Firefox is the only browser officially supported
+ * by the application.
+ *
+ * If no supported browser is found:
+ * - A warning is logged
+ * - A notification is displayed to the user
+ * - "firefox" is returned as a fallback to allow yt-dlp to
+ *   handle the error gracefully without crashing the application
+ *
+ * @returns {string} The detected browser identifier.
+ */
 function getUserBrowser() {
-  const userProfile = os.homedir();
+  //const userProfile = os.homedir();
+  const firefoxPath = getFirefoxProfilePath();

-  // List of browsers supported by yt-dlp (Currently I can only guarantee Firefox, Sorry)
+  /**
+   * Browsers supported by yt-dlp cookie extraction.
+   *
+   * Only Firefox is currently enabled and tested.
+   * Additional browsers can be enabled in the future
+   * once compatibility has been verified.
+   */
  const browsers = [
-    { name: "firefox", path: path.join(userProfile, "AppData", "Roaming", "Mozilla", "Firefox", "Profiles") },
+    { name: "firefox", path: firefoxPath },
    // { name: "chrome", path: path.join(userProfile, "AppData", "Local", "Google", "Chrome", "User Data", "Default") },
    // { name: "brave", path: path.join(userProfile, "AppData", "Local", "BraveSoftware", "Brave-Browser", "User Data", "Default") },
    // { name: "edge", path: path.join(userProfile, "AppData", "Local", "Microsoft", "Edge", "User Data", "Default") },
@@ -19,21 +43,60 @@ function getUserBrowser() {
    // { name: "whale", path: path.join(userProfile, "AppData", "Local", "Naver", "Naver Whale", "User Data", "Default") }
  ];

-  // Search for an available browser
+  // Search for the first available browser profile.
  for (const browser of browsers) {
-    if (fs.existsSync(browser.path)) {
+    if (browser.path && fs.existsSync(browser.path)) {
      logger.info(`Browser found: ${browser.name}`);
      return browser.name;
    }
  }

-  // No browser found - notify user
+  // No supported browser found => Notify User
  logger.warn("No supported browser found on the system");
-  notify.notifyFirefoxBrowserMissing();
-  
-  // Fallback: return "Firefox" to let YT-DLP manage error
-  // this avoid app crash
+
+  // If you somehow managed to live without Firefox and need help installing it. - Don't applied to my Linux chad
+  if (process.platform === "win32") {
+    notify.notifyFirefoxBrowserMissing();
+  }
+
+  // Fallback to Firefox and let yt-dlp handle the error gracefully.
+  // This prevents the application from crashing
  return "firefox";
 }

+function getFirefoxProfilePath() {
+  const home = os.homedir();
+
+  if (process.platform === "win32") {
+    return path.join(
+      home,
+      "AppData",
+      "Roaming",
+      "Mozilla",
+      "Firefox",
+      "Profiles"
+    );
+  }
+
+  if (process.platform === "linux") {
+    return path.join(
+      "usr",
+      "bin",
+      "firefox"
+    );
+  }
+
+  if (process.platform === "darwin") {
+    return path.join(
+      home,
+      "Library",
+      "Application Support",
+      "Firefox",
+      "Profiles"
+    );
+  }
+
+  return null;
+}
+
 module.exports = getUserBrowser
--- a/server/helpers/notify.helpers.js
+++ b/server/helpers/notify.helpers.js
@@ -1,19 +1,65 @@
 const { Notification, shell } = require("electron");
 const { iconPaths } = require("./path.helpers");
+const { logger } = require("../logger");

+/**
+ * Set that is holding all notifications. Used to avoid Race Condition and notification crash
+ * @type {Set<any>}
+ */
+const activeNotifications = new Set();
+
+/**
+ * Displays a system notification when a download completes successfully.
+ *
+ * If enabled, clicking the notification opens the download folder
+ * using the system file explorer.
+ *
+ * @param {string} folder - Path to the completed download folder.
+ * @param {boolean} notifyEnabled - Whether notifications are enabled in config.
+ */
 function notifyDownloadFinished(folder, notifyEnabled = true) {
  if (!notifyEnabled) return;
-  
+  if (!folder) return;
+
  const notif = new Notification({
    title: "Freedom Loader",
    body: "Your download is complete, click here to open it.",
    icon: iconPaths.confirm,
  });

-  notif.on("click", () => shell.openPath(folder));
+  // Protect notification to garbage collection and race condition, by adding a 150ms timeout before trying to open the folder
+  activeNotifications.add(notif);
+
+  notif.on("click", () => {
+    activeNotifications.delete(notif);
+
+    setTimeout(() => {
+      shell.openPath(folder).then((errorMessage) => {
+        if (errorMessage) {
+          logger.error(`Impossible d'ouvrir le dossier : ${errorMessage}`);
+        }
+      }).catch(err => {
+        logger.error(`Erreur inattendue de shell.openPath : ${err}`);
+      });
+    }, 150);
+  });
+
+  notif.on("close", () => {
+    activeNotifications.delete(notif);
+  });
+
  notif.show();
 }

+/**
+ * Displays a notification when browser cookies cannot be extracted.
+ *
+ * This usually indicates:
+ * - User is not logged in to the browser
+ * - Browser profile is inaccessible
+ *
+ * Clicking the notification opens a tutorial link.
+ */
 function notifyCookiesBrowserError(){
  const notif = new Notification({
    title: "Cookies Error",
@@ -21,23 +67,51 @@ function notifyCookiesBrowserError(){
    icon: iconPaths.error,
  });

-  notif.on("click", () => shell.openExternal("https://youtube.com/shorts/cN9f4s1Mf88?si=519QCVd_-fzJqRf1"));
+  activeNotifications.add(notif);
+
+  notif.on("click", () => {
+    shell.openExternal("https://www.firefox.com/en-US/download/");
+    activeNotifications.delete(notif);
+  });
+
+  notif.on("close", () => {
+    activeNotifications.delete(notif);
+  });
+
  notif.show();
 }

-function notifyFirefoxBrowserMissing(){
+/**
+ * Displays a notification when Firefox is not detected
+ * on the user system.
+ *
+ * This is required for cookie extraction via yt-dlp.
+ *
+ * Clicking the notification opens an installation guide.
+ */
+function notifyFirefoxBrowserMissing() {
  const notif = new Notification({
    title: "Firefox Missing",
    body: "Firefox was not found on your system. Click here to follow the installation guide",
    icon: iconPaths.error,
  });

-  notif.on("click", () => shell.openExternal("https://youtube.com/shorts/cN9f4s1Mf88?si=519QCVd_-fzJqRf1"))
+  activeNotifications.add(notif);
+
+  notif.on("click", () => {
+    shell.openExternal("https://www.firefox.com/en-US/download/");
+    activeNotifications.delete(notif);
+  });
+
+  notif.on("close", () => {
+    activeNotifications.delete(notif);
+  });
+
  notif.show();
 }

 module.exports = {
-  notifyDownloadFinished, 
+  notifyDownloadFinished,
  notifyCookiesBrowserError,
-  notifyFirefoxBrowserMissing
+  notifyFirefoxBrowserMissing,
 };
--- a/server/helpers/parseInfo.helpers.js
+++ b/server/helpers/parseInfo.helpers.js
@@ -1,27 +1,38 @@
+/**
+ * Normalizes a video payload by attaching the resource type.
+ *
+ * @param {Object} data - Raw video metadata.
+ * @returns {Object} Normalized video object.
+ */
 function parseVideo(data) {
-
-    return {
-        type: "video",
-        ...data
-    };
+  return {
+    type: "video",
+    ...data
+  };
 }

+/**
+ * Transforms a raw playlist payload into a normalized structure
+ * containing playlist metadata and a simplified list of videos.
+ *
+ * @param {Object} data - Raw playlist metadata.
+ * @returns {Object} Normalized playlist object.
+ */
 function parsePlaylist(data) {
-    
-    return {
-        type: "playlist",
-        title: data.title || data.id,
-        channel: data.uploader,
-        count: data.entries.length,
-        videos: (data.entries || []).map(v => ({
-            id: v.id,
-            title: v.title,
-            url: v.webpage_url,
-            duration: v.duration,
-            thumbnail: v.thumbnail,
-            uploader: v.uploader
-        }))
-    };
+  return {
+    type: "playlist",
+    title: data.title || data.id,
+    channel: data.uploader,
+    count: data.entries.length,
+    videos: (data.entries || []).map(v => ({
+      id: v.id,
+      title: v.title,
+      url: v.webpage_url,
+      duration: v.duration,
+      thumbnail: v.thumbnail,
+      uploader: v.uploader
+    }))
+  };
 }

-module.exports = { parseVideo, parsePlaylist };
+module.exports = { parseVideo, parsePlaylist };
--- a/server/helpers/path.helpers.js
+++ b/server/helpers/path.helpers.js
@@ -1,110 +1,232 @@
 const path = require("path");
 const fs = require("fs");
-const os = require("os");
 const { app } = require("electron");
 const config = require("../../config.js");

-const { logger } = require("../logger.js");
+/**
+ * Is the OS windows
+ */
+const isWindows = process.platform === 'win32'

-// Centralized resource paths
-const resourcesPath = config.localMode 
-  ? path.join(__dirname, "../../ressources")
+/**
+ * On windows the binaries are name.exe on Linux/macOS no
+ */
+const ext = isWindows ? '.exe' : ''
+
+/**  Centralized resource paths */
+const resourcesPath = config.devMode
+  ? path.join(__dirname, "../../resources")
  : process.resourcesPath;

-// Default download folder (centralized)
-const defaultDownloadFolder = path.join(os.homedir(), "Downloads", "Freedom Loader");
+/**  Default download folder (centralized) */
+const defaultDownloadFolder = path.join(app.getPath("downloads"), "Freedom Loader");
+
+/**
+ * Current platform:
+ * win32 | linux | darwin
+ */
+const platform = process.platform;
+
+/**
+ * Dev source tree uses platform-named subfolders (matches resources/binaries/{win-32,linux,darwin}).
+ * Packaged builds flatten everything directly under binaries/, since each
+ * platform build only ships its own binaries — no subfolder needed.
+ */
+const devPlatformFolder = {
+  win32: "win-32",
+  linux: "linux",
+  darwin: "darwin"
+}[platform];
+
+const binariesPath = config.devMode
+    ? path.join(resourcesPath, "binaries", devPlatformFolder)
+    : path.join(resourcesPath, "binaries");
+
+
+/**
+ * Runtime-resolved binary paths.
+ * These values differ between development and production builds.
+ */

-// Binary paths
 let userYtDlp;
 let ffmpegPath;
 let denoPath;

-const sourceYtDlp = path.join(resourcesPath, "binaries","yt-dlp.exe");
+/** Source binary bundled inside application resources (used for first-time copy) */
+const sourceYtDlp = path.join(
+  binariesPath,
+  `yt-dlp${ext}`
+);

-if (config.localMode) {
-  userYtDlp = path.join(__dirname, "../../ressources/yt-dlp.exe");
-  ffmpegPath = path.join(__dirname, "../../ressources/"); // <- has ffmpeg.exe and ffprobe.exe
-  denoPath = path.join(__dirname, "../../ressources/deno.exe"); 
+/**
+ * Resolve binary locations depending on environment:
+ * - dev: local resources folder
+ * - prod: extracted userData + packaged resources
+ */
+if (config.devMode) {
+  userYtDlp = path.join(
+    binariesPath,
+    `yt-dlp${ext}`
+  );
+
+  ffmpegPath = path.join(
+    binariesPath,
+    `ffmpeg${ext}`
+  );
+
+  denoPath = path.join(
+    binariesPath,
+    `deno${ext}`
+  );
 } else {
-  userYtDlp = path.join(app.getPath("userData"),"yt-dlp.exe");
-  ffmpegPath = path.join(resourcesPath, "binaries","ffmpeg.exe"); 
-  denoPath = path.join(resourcesPath, "binaries","deno.exe");
+  userYtDlp = path.join(
+    app.getPath("userData"),
+    `yt-dlp${ext}`
+  );

-  if (!fs.existsSync(userYtDlp)) {
+  ffmpegPath = path.join(
+    binariesPath,
+    `ffmpeg${ext}`
+  );
+
+  denoPath = path.join(
+    binariesPath,
+    `deno${ext}`
+  );
+
+  if (!fs.existsSync(userYtDlp) && fs.existsSync(sourceYtDlp)) {
    fs.copyFileSync(sourceYtDlp, userYtDlp);
+
+    // Linux/macOS executable permission
+    if (!isWindows) {
+      try {
+        fs.chmodSync(userYtDlp, 0o755);
+      } catch (err) {
+          getLogger().warn(`Failed to chmod yt-dlp: ${err.message}`);
+      }
+    }
  }
 }

-// Notification icon paths
+/**
+ * Centralized notification and UI icon paths.
+ * Used by Electron notifications and UI components.
+ */
 const iconPaths = {
  confirm: path.join(resourcesPath, "confirm-icon.png"),
  error: path.join(resourcesPath, "error.png"),
  app: path.join(resourcesPath, "app-icon.ico")
 };

-// Binary paths for verification
+/**
+ * Static reference paths to bundled binaries.
+ * Used mainly for verification and diagnostics.
+ */
 const binaryPaths = {
-  ytDlp: path.join(resourcesPath, "binaries", "yt-dlp.exe"),
-  ffmpeg: path.join(resourcesPath, "binaries", "ffmpeg.exe"),
-  ffprobe: path.join(resourcesPath, "binaries", "ffprobe.exe"),
-  deno: path.join(resourcesPath, "binaries", "deno.exe")
+  ytDlp: path.join(
+    binariesPath,
+    `yt-dlp${ext}`
+  ),
+
+  ffmpeg: path.join(
+    binariesPath,
+    `ffmpeg${ext}`
+  ),
+
+  ffprobe: path.join(
+    binariesPath,
+    `ffprobe${ext}`
+  ),
+
+  deno: path.join(
+    binariesPath,
+    `deno${ext}`
+  )
 };

-// Theme paths - themes stored in AppData to survive updates
+/**
+ * Theme storage system:
+ * - default themes come from app resources
+ * - user themes are persisted in userData to survive updates
+ */
 const userThemesPath = path.join(app.getPath("userData"), "themes");
 const defaultThemesSourcePath = path.join(resourcesPath, "theme");

+/**
+ * Initializes user theme directory and ensures default themes exist.
+ *
+ * - Creates user themes folder if missing
+ * - Copies bundled themes from resources if not present
+ * - Applies permissive permissions for runtime modification
+ */
 function initUserThemes() {
  try {
    if (!fs.existsSync(userThemesPath)) {
      fs.mkdirSync(userThemesPath, { recursive: true });
-      // Ensure folder is writable
      fs.chmodSync(userThemesPath, 0o777);
-      logger.info("Created user themes directory");
+      getLogger().info("Created user themes directory");
    }

-    // Copy default themes from resources to user directory if they don't exist
    if (fs.existsSync(defaultThemesSourcePath)) {
      const defaultThemes = fs.readdirSync(defaultThemesSourcePath);
      for (const theme of defaultThemes) {
        const srcPath = path.join(defaultThemesSourcePath, theme);
        const destPath = path.join(userThemesPath, theme);
-        
-        if (!fs.existsSync(destPath)) {
-          try {
+        const srcIsFile = !fs.statSync(srcPath).isDirectory();
+
+        if (fs.existsSync(destPath)) {
+          const destIsDir = fs.statSync(destPath).isDirectory();
+          if (srcIsFile && destIsDir) {
+            getLogger().warn(`Corrupted theme entry: ${theme}, fixing...`);
+            fs.rmSync(destPath, { recursive: true, force: true });
+
+          } else {
+            continue;
+          }
+        }
+
+        try {
+          if (srcIsFile) {
+            fs.copyFileSync(srcPath, destPath);
+            fs.chmodSync(destPath, 0o666);
+          } else {
            copyDirectory(srcPath, destPath);
            fs.chmodSync(destPath, 0o777);
-            logger.info(`Copied default theme: ${theme}`);
-          } catch (copyErr) {
-            logger.warn(`Failed to copy theme ${theme}: ${copyErr.message}. Theme folder will be created, add theme files manually.`);
-            try {
-              fs.mkdirSync(destPath, { recursive: true });
-              fs.chmodSync(destPath, 0o777);
-            } catch (mkdirErr) {
-              logger.warn(`Could not create theme directory ${theme}: ${mkdirErr.message}`);
-            }
          }
+          getLogger().info(`Copied default theme: ${theme}`);
+        } catch (copyErr) {
+          getLogger().warn(`Failed to copy theme ${theme}: ${copyErr.message}`);
        }
      }
    } else {
-      logger.warn(`Default themes source path not found: ${defaultThemesSourcePath}`);
+      getLogger().warn(`Default themes source path not found: ${defaultThemesSourcePath}`);
    }
  } catch (err) {
-    logger.error(`Failed to initialize user themes: ${err.message}`);
+    getLogger().error(`Failed to initialize user themes: ${err.message}`);
  }
 }
-
+/**
+ * Recursively copies a directory and its contents.
+ *
+ * @param {string} src - Source directory
+ * @param {string} dest - Destination directory
+ * @throws Error If copy operation fails
+ */
 function copyDirectory(src, dest) {
  try {
    if (!fs.existsSync(dest)) {
-      fs.mkdirSync(dest, { recursive: true, mode: 0o777 });
+      fs.mkdirSync(dest, {
+        recursive: true,
+        mode: 0o777
+      });
    }
-    
+
    const files = fs.readdirSync(src);
+
    for (const file of files) {
      const srcFile = path.join(src, file);
      const destFile = path.join(dest, file);
-      
+
      if (fs.statSync(srcFile).isDirectory()) {
        copyDirectory(srcFile, destFile);
      } else {
@@ -116,8 +238,32 @@ function copyDirectory(src, dest) {
  }
 }

-if (!userYtDlp){ logger.error("Missing YT-DLP")}
-if (!ffmpegPath){ logger.error("Missing FFMPEG")}
-if (!denoPath){ logger.error("Missing DENO")}
+// Runtime validation of critical binaries
+// if (!userYtDlp) {
+//     getLogger().error("Missing yt-dlp binary");
+// }

-module.exports = { userYtDlp, ffmpegPath, denoPath, iconPaths, binaryPaths, resourcesPath, defaultDownloadFolder, userThemesPath, initUserThemes };
+// if (!ffmpegPath) {
+//     getLogger().error("Missing ffmpeg binary");
+// }
+
+// if (!denoPath) {
+//     getLogger().error("Missing deno binary");
+// }
+
+
+function validateBinaries() {
+  if (!userYtDlp) getLogger().error("Missing yt-dlp binary");
+  if (!ffmpegPath) getLogger().error("Missing ffmpeg binary");
+  if (!denoPath) getLogger().error("Missing deno binary");
+}
+
+/**
+ * Helper to lazy load logger, avoid circular import
+ * @returns {winston.Logger}
+ */
+function getLogger() {
+    return require("../logger.js").logger;
+}
+
+module.exports = { userYtDlp, ffmpegPath, denoPath, iconPaths, binaryPaths, resourcesPath, defaultDownloadFolder, userThemesPath, initUserThemes, isWindows, validateBinaries };
--- a/server/helpers/rateLimit.helpers.js
+++ b/server/helpers/rateLimit.helpers.js
@@ -1,14 +1,24 @@
 const RateLimit = require("express-rate-limit");


-/* Rate Limite */
-const rateLimite = RateLimit({
+/**
+ * Rate limiter middleware used to protect public endpoints
+ * against abusive or excessive requests.
+ *
+ * Restrictions:
+ * - 5 requests per IP address
+ * - 15-minute sliding window
+ *
+ * When the limit is exceeded, a HTTP 429 (Too Many Requests)
+ * response is returned.
+ */
+const rateLimit = RateLimit({
  windowMs: 15 * 60 * 1000, // 15 minutes
-  max: 5, // limit each IP to 100 requests per windowMs on the root path
+  max: 5,
  message: "Too many requests, please try again later.",
-  statusCode: 429, // HTTP status code for "Too Many Requests"
+  statusCode: 429,
 });

 module.exports = {
-    rateLimite
+    rateLimit
 }
--- a/server/helpers/validation.helpers.js
+++ b/server/helpers/validation.helpers.js
@@ -1,21 +1,43 @@
 const path = require("path");

-function isValidUrl(url) { 
-  try { 
-      new URL(url); 
-      return true; 
-      
-    } catch { 
-      return false; 
-    } 
+/**
+ * Validates whether the provided string is a well-formed URL.
+ *
+ * The validation relies on the native URL constructor and
+ * returns `true` only if the value can be successfully parsed.
+ *
+ * @param {string} url - URL to validate.
+ * @returns {boolean} True if the URL is valid, otherwise false.
+ */
+function isValidUrl(url) {
+  try {
+    new URL(url);
+    return true;

+  } catch {
+    return false;
+  }
 }

+/**
+ * Validates whether a folder path is considered safe for
+ * file operations.
+ *
+ * Security checks:
+ * - Rejects empty or very short paths.
+ * - Resolves the absolute path before validation.
+ * - Prevents access to sensitive Windows system directories.
+ *
+ * @param {string} folder - Folder path to validate.
+ * @returns {boolean} True if the path is considered safe, otherwise false.
+ */
 function isSafePath(folder) {
  if (!folder || folder.length < 3) return false;
+
  const unsafe = ["System32", "\\Windows"];
  const resolved = path.resolve(folder);
+
  return !unsafe.some(u => resolved.includes(u));
 }

-module.exports = { isValidUrl, isSafePath };
+module.exports = { isValidUrl, isSafePath };
--- a/server/logger.js
+++ b/server/logger.js
@@ -4,9 +4,11 @@ const fs = require("fs");
 const path = require("path");
 const os = require("os");
 const config = require("../config");
+const {isWindows} = require("./helpers/path.helpers");
+const { logSystemInfo } = require("./sysinfo");

 // Logs folder in Windows
-const logDir = path.join(os.homedir(), "AppData", "Local", "FreedomLoader", "logs");
+const logDir = isWindows ? path.join(os.homedir(), "AppData", "Local", "FreedomLoader", "logs") : path.join(process.env.XDG_DATA_HOME || path.join(os.homedir(), ".local", "share"),  "FreedomLoader", "logs");

 // Create "Logs" folder if needed
 try {
@@ -20,10 +22,42 @@ const logFormat = format.combine(
  format.printf(({ timestamp, level, message }) => `${timestamp} | ${level.toUpperCase()} |  ${message}`)
 );

-// Logger configuration
+/**
+ * Format used by the saved file
+ * @type {Format}
+ */
+const fileFormat = format.combine(
+    format.timestamp({format: "YYYY-MM-DD HH:mm:ss"}),
+    format.errors({stack: true}), // Capture la stack trace complète des erreurs
+    format.printf(({timestamp, level, message, stack}) => {
+      return `${timestamp} | ${level.toUpperCase()} | ${stack || message}`;
+    })
+);
+
+/**
+ * Formated used by the IDE/Console
+ * @type {Format}
+ */
+const consoleFormat = format.combine(
+    format.colorize({all: true}),
+    format.timestamp({format: "HH:mm:ss"}),
+    format.errors({stack: true}),
+    format.printf(({timestamp, level, message, stack}) => {
+      return `[${timestamp}] ${level}: ${stack || message}`;
+    })
+);
+
+/**
+ * Logger Instance with differents types
+ *  - info
+ *  - error
+ *  - warn 
+ * 
+ * You need to specify the text that need to be displayed
+ * @param string
+ */
 const logger = createLogger({
  level: "info",
-  format: logFormat,
  transports: [
    new DailyRotateFile({
      dirname: logDir,
@@ -31,20 +65,28 @@ const logger = createLogger({
      datePattern: "YYYY-MM-DD",
      zippedArchive: false,
      maxFiles: "7d",
-      format: logFormat,
+      format: fileFormat,
      options: { flags: "a" },
    }),
    new transports.Console({
-      format: logFormat,
+      format: consoleFormat,
    }),
  ],
 });

-function logSessionStart() {
+/**
+ * Start Log Session 
+ */
+function logSessionStart(logDir, downloadPath) {
  logger.info(`--- Starting session: ${new Date().toISOString()} ---`);
+  logger.info("============================================================")
  logger.info(`Application Version: ${config.version}`)
+  if (typeof logSystemInfo === 'function') logSystemInfo(logger, logDir, downloadPath);
 }

+/**
+ * Stop Log Session
+ */
 function logSessionEnd() {
  logger.info(`--- Ending session: ${new Date().toISOString()} ---`);
 }
--- a/server/routes/info.route.js
+++ b/server/routes/info.route.js
@@ -2,6 +2,6 @@ const express = require("express");
 const router = express.Router();
 const { infoController } = require("../controller/info.controller");

-router.post("/", infoController);
+router.get("/", infoController);

 module.exports = router;
--- a/server/server.js
+++ b/server/server.js
@@ -2,7 +2,7 @@ const express = require("express");
 const path = require("path");
 const { logger, logSessionEnd } = require("./logger");
 const config = require("../config");
-const { rateLimite } = require("./helpers/rateLimit.helpers");
+const { rateLimit } = require("./helpers/rateLimit.helpers");

 const app = express();

@@ -13,11 +13,21 @@ app.use(express.static(path.join(__dirname, "../public")));

 // Routes
 app.use("/download", require("./routes/download.route"));
-app.use("/info",     require("./routes/info.route"));
-app.get("/", rateLimite, (req, res) => {
+app.use("/info", require("./routes/info.route"));
+
+// Interface
+app.get("/", rateLimit, (req, res) => {
  res.sendFile(path.join(__dirname, "../public/index.html"));
 });

+/**
+ * Initializes and starts the Express HTTP server.
+ * 
+ * - Binds the server to `config.applicationPort`
+ * - Resolves with the HTTP server instance on successful startup
+ * - Rejects on server binding or runtime errors
+ * - Registers SIGINT/SIGTERM handlers for graceful shutdown
+ */
 async function startServer() {
  return new Promise((resolve, reject) => {
    const server = app.listen(config.applicationPort, () => {
@@ -30,6 +40,12 @@ async function startServer() {
      reject(err);
    });

+    /**
+     * Clean exit function
+     *  - Stop Log 
+     *  - Stop Express Server
+     *  - Stop Electron App 
+     */
    const gracefulExit = () => {
      logSessionEnd();
      server.close(() => {
--- a/server/services/download.services.js
+++ b/server/services/download.services.js
@@ -6,15 +6,47 @@ const { buildYtDlpArgs } = require("../helpers/buildArgs.helpers");
 const notify = require("../helpers/notify.helpers");
 const path = require("path");
 const { isSafePath } = require("../helpers/validation.helpers");
-const { configFeatures } = require("../../config.js");
+const {reloadFeatures} = require("../../config");

+/**
+ * Reference to the currently running yt-dlp process.
+ *
+ * Used to support download cancellation and lifecycle
+ * management.
+ *
+ * @type {import("child_process").ChildProcess|null}
+ */
 let currentDownloadProcess = null;

-// Détecte si une URL est une playlist
+/**
+ * Determines whether a URL targets a playlist.
+ *
+ * The detection is based on the presence of the YouTube
+ * playlist query parameter (`list`).
+ *
+ * @param {string} url - URL to inspect.
+ * @returns {boolean} True if the URL appears to be a playlist.
+ */
 function isPlaylistUrl(url) {
  return url.includes("?list=") || url.includes("&list=");
 }

+/**
+ * Creates a dedicated download folder for a playlist.
+ *
+ * The playlist title is sanitized to ensure it can be safely
+ * used as a filesystem path. If the target folder already
+ * exists, an incremented suffix is appended until a unique
+ * folder name is found.
+ *
+ * If folder creation fails, a fallback folder named
+ * "Untitled Playlist X" is generated.
+ *
+ * @param {string} basePath - Parent download directory.
+ * @param {string} playlistTitle - Playlist title returned by yt-dlp.
+ * @returns {string} Absolute path of the created playlist folder.
+ * @throws {Error} If no valid folder can be created.
+ */
 function createPlaylistFolder(basePath, playlistTitle) {
  const sanitizedTitle = playlistTitle
    .replace(/[<>:"|?*]/g, '') 
@@ -74,10 +106,39 @@ function createPlaylistFolder(basePath, playlistTitle) {
  }
 }

+/**
+ * Starts a yt-dlp download process and monitors its progress.
+ *
+ * Responsibilities:
+ * - Validates and prepares the output directory
+ * - Creates playlist folders when enabled
+ * - Builds yt-dlp command arguments
+ * - Spawns the yt-dlp process
+ * - Parses progress, speed and stage information
+ * - Notifies listeners about download events
+ * - Handles download completion and failures
+ *
+ * @param {Object} options - Download options.
+ * @param {string} options.url - Video or playlist URL.
+ * @param {string} [options.outputFolder] - Destination folder.
+ * @param {string} [options.playlistTitle] - Playlist title.
+ *
+ * @param {Function[]} listeners - Progress listeners.
+ * @param {Function[]} speedListeners - Download speed listeners.
+ * @param {Function[]} stageListeners - Processing stage listeners.
+ * @param {Function[]} playlistInfoListeners - Playlist progress listeners.
+ *
+ * @returns {Promise<string>}
+ * Resolves with the final output folder path once the
+ * download has completed successfully.
+ */
 function fetchDownload(options, listeners, speedListeners, stageListeners, playlistInfoListeners) {

  return new Promise((resolve, reject) => {
-    logger.info(`CONFIG createPlaylistFolders: ${configFeatures.createPlaylistFolders}`);
+
+    const userConfig = reloadFeatures();
+
+    logger.info(`CONFIG createPlaylistFolders: ${userConfig.createPlaylistFolders}`);
    
    let outputFolder = options.outputFolder || defaultDownloadFolder;
    
@@ -100,8 +161,8 @@ function fetchDownload(options, listeners, speedListeners, stageListeners, playl

    // Détecte si c'est une playlist et crée un dossier approprié
    const isPlaylist = options.playlistTitle || isPlaylistUrl(options.url);
-    
-    if (isPlaylist && configFeatures.createPlaylistFolders) {
+
+    if (isPlaylist && userConfig.createPlaylistFolders) {
      try {
        const playlistName = options.playlistTitle || "Untitled Playlist";
        safeOutputFolder = createPlaylistFolder(safeOutputFolder, playlistName);
@@ -110,11 +171,16 @@ function fetchDownload(options, listeners, speedListeners, stageListeners, playl
        logger.error(`Failed to create playlist folder: ${err.message}`);
        return reject(err);
      }
-    } else if (isPlaylist && !configFeatures.createPlaylistFolders) {
+    } else if (isPlaylist && !userConfig.createPlaylistFolders) {
      logger.info(`Playlist detected but createPlaylistFolders is disabled, using base folder`);
    }

-    const args = buildYtDlpArgs({ ...options, outputFolder: safeOutputFolder });
+    const args = buildYtDlpArgs({
+      ...options,
+      outputFolder: safeOutputFolder,
+      isPlaylist
+    });
+
    logger.info(`[yt-dlp args] ${args.join(" ")}`);

    const child = execFile(userYtDlp, args);
@@ -191,6 +257,16 @@ function fetchDownload(options, listeners, speedListeners, stageListeners, playl
  });
 }

+/**
+ * Cancels the currently running yt-dlp process.
+ *
+ * Attempts to terminate the entire process tree to ensure
+ * that yt-dlp and any spawned FFmpeg processes are stopped.
+ *
+ * @returns {boolean}
+ * True if a download process was cancelled,
+ * otherwise false.
+ */
 function cancelDownload() {
  if (currentDownloadProcess) {
    logger.info("Cancelling download and killing all child processes...");
--- a/server/services/info.services.js
+++ b/server/services/info.services.js
@@ -3,8 +3,30 @@ const { userYtDlp, denoPath } = require("../helpers/path.helpers");
 const getUserBrowser = require("../helpers/getBrowser.helpers");
 const { logger } = require("../logger");

+/**
+ * Retrieves metadata for a video or playlist using yt-dlp.
+ *
+ * The command executes yt-dlp in JSON mode and returns the
+ * parsed response object without downloading any media.
+ *
+ * Features:
+ * - Supports videos and playlists
+ * - Imports browser cookies when available
+ * - Uses Deno for JavaScript extraction
+ * - Applies a 30-second timeout
+ * - Limits response size to 10 MB
+ *
+ * @param {string} url - Video or playlist URL to inspect.
+ * @returns {Promise<Object>} Resolves with the metadata returned by yt-dlp.
+ *
+ */
 function fetchInfo(url) {
-    const args = [
+
+    /**
+     * Base yt-dlp arguments used to retrieve metadata
+     * without downloading media files.
+     */
+    const metadataArgs  = [
        "--js-runtimes", `deno:${denoPath}`,
        "--dump-single-json",
        "--ignore-errors",
@@ -16,9 +38,9 @@ function fetchInfo(url) {

    return new Promise((resolve, reject) => {

-        execFile(userYtDlp,[...args, url],
+        execFile(userYtDlp,[...metadataArgs , url],
            {   timeout: 30_000, // 30s, if more timeout
-                maxBuffer: 10 * 1024 * 1024 },  // 10MO max response (Default: 200ko)
+                maxBuffer: 10 * 1024 * 1024 },  // Maximum response size: 10 MB (Node.js default is much smaller)
                
                (error, stdout, stderr) => {

--- a/server/sysinfo.js
+++ b/server/sysinfo.js
@@ -0,0 +1,142 @@
+const os = require("os");
+const fs = require("fs");
+const { execSync } = require("child_process");
+const { app } = require("electron");
+
+/**
+ * Reads /etc/os-release to get the Linux distribution name
+ */
+function getLinuxDistro() {
+    try {
+        const content = fs.readFileSync("/etc/os-release", "utf-8");
+        const pretty = content.match(/^PRETTY_NAME="?(.+?)"?$/m);
+        if (pretty) return pretty[1];
+        const name = content.match(/^NAME="?(.+?)"?$/m);
+        return name ? name[1] : "Unknown Linux";
+    } catch {
+        return "Unknown Linux";
+    }
+}
+
+/**
+ * Reads the package-type file written by electron-builder
+ * to determine how the app was distributed (rpm, snap, AppImage, deb...)
+ */
+function getPackageType() {
+    try {
+        const pkgTypePath = require("path").join(process.resourcesPath, "package-type");
+        if (fs.existsSync(pkgTypePath)) {
+            return fs.readFileSync(pkgTypePath, "utf-8").trim();
+        }
+    } catch { /* ignore */ }
+    return "unknown";
+}
+
+/**
+ * Checks if Firefox is installed on the current platform
+ */
+function detectFirefox() {
+    const platform = process.platform;
+
+    if (platform === "win32") {
+        const paths = [
+            "C:\\Program Files\\Mozilla Firefox\\firefox.exe",
+            "C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe",
+            `${process.env.LOCALAPPDATA}\\Mozilla Firefox\\firefox.exe`,
+        ];
+        return paths.some(p => fs.existsSync(p));
+    }
+
+    if (platform === "linux") {
+        const paths = [
+            "/usr/bin/firefox",
+            "/usr/bin/firefox-esr",
+            "/usr/local/bin/firefox",
+            "/snap/bin/firefox",
+            "/var/lib/flatpak/exports/bin/org.mozilla.firefox",
+            `${os.homedir()}/.local/share/flatpak/exports/bin/org.mozilla.firefox`,
+        ];
+        if (paths.some(p => fs.existsSync(p))) return true;
+        try { execSync("which firefox", { stdio: "ignore" }); return true; } catch { return false; }
+    }
+
+    return false;
+}
+
+/**
+ * Builds the system info object logged at startup
+ * 
+ * @param {string} logDir - path to the log directory
+ * @param {string} downloadPath - current configured download path
+ */
+function getSystemInfo(logDir, downloadPath) {
+    const platform = process.platform;
+    const cpus = os.cpus();
+    const totalMem = (os.totalmem() / 1024 / 1024 / 1024).toFixed(1);
+    const freeMem  = (os.freemem()  / 1024 / 1024 / 1024).toFixed(1);
+
+    let platformLabel;
+    if (platform === "win32") {
+        platformLabel = `Windows (${os.release()})`;
+    } else if (platform === "linux") {
+        platformLabel = `Linux — ${getLinuxDistro()}`;
+    } else {
+        platformLabel = `${platform} ${os.release()} (unsupported)`;
+    }
+
+    const info = {
+        "Platform":        platformLabel,
+        "Architecture":    os.arch(),
+        "CPU":             cpus.length ? `${cpus[0].model.trim()} (${cpus.length} cores)` : "Unknown",
+        "Memory":          `${freeMem} GB free / ${totalMem} GB total`,
+        "Locale":          app.getLocale(),
+        "Electron":        process.versions.electron,
+        "Node":            process.versions.node,
+        "Packaged":        String(app.isPackaged),
+        "Package type":    app.isPackaged ? getPackageType() : "dev",
+        "Firefox present": detectFirefox() ? "Yes" : "No — cookie features unavailable",
+        "Log directory":   logDir,
+        "Download path":   downloadPath,
+    };
+
+    // Linux-specific extras
+    if (platform === "linux") {
+        const sessionType = process.env.XDG_SESSION_TYPE || "unknown";
+        const waylandDisplay = process.env.WAYLAND_DISPLAY;
+        const x11Display = process.env.DISPLAY;
+
+        info["Display server"]  = waylandDisplay
+            ? `Wayland (${waylandDisplay})`
+            : x11Display
+            ? `X11 (${x11Display})`
+            : sessionType !== "unknown"
+            ? sessionType
+            : "unknown";
+
+        info["Desktop env"] = process.env.XDG_CURRENT_DESKTOP || process.env.DESKTOP_SESSION || "unknown";
+    }
+
+    return info;
+}
+
+/**
+ * Logs system info at application startup
+ *
+ * @param {object} logger - winston logger instance
+ * @param {string} logDir - path to the log directory
+ * @param {string} downloadPath - current configured download path
+ */
+function logSystemInfo(logger, logDir, downloadPath) {
+    const info = getSystemInfo(logDir, downloadPath);
+    const maxKeyLen = Math.max(...Object.keys(info).map(k => k.length));
+
+    logger.info("=".repeat(60));
+    logger.info("SYSTEM INFO");
+    logger.info("=".repeat(60));
+    for (const [key, val] of Object.entries(info)) {
+        logger.info(`  ${key.padEnd(maxKeyLen)} : ${val}`);
+    }
+    logger.info("=".repeat(60));
+}
+
+module.exports = { logSystemInfo };
--- a/test/unit/buildArgs.test.js
+++ b/test/unit/buildArgs.test.js
@@ -0,0 +1,182 @@
+const path = require("path");
+
+jest.mock("../../server/helpers/getBrowser.helpers.js", () =>
+    jest.fn(() => "firefox")
+);
+
+jest.mock("../../server/helpers/path.helpers.js", () => ({
+    ffmpegPath: "/mock/ffmpeg",
+    denoPath: "/mock/deno",
+}));
+
+jest.mock("../../config.js", () => ({
+    configFeatures: {
+        autoUpdate: false,
+        discordRPC: false,
+        customTopBar: false,
+        autoCheckInfo: false,
+        addThumbnail: true,
+        addMetadata: true,
+        verboseLogs: false,
+        autoDownloadPlaylist: false,
+        customCodec: "h264",
+    },
+}));
+
+jest.mock("../../server/logger.js", () => ({
+    logger: {
+        info: jest.fn(),
+        error: jest.fn(),
+    },
+}));
+
+const { buildYtDlpArgs } = require("../../server/helpers/buildArgs.helpers");
+const { configFeatures } = require("../../config");
+const { logger } = require("../../server/logger");
+
+describe("buildYtDlpArgs", () => {
+    beforeEach(() => {
+        jest.clearAllMocks();
+    });
+
+    test("builds default video arguments", () => {
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "best",
+            outputFolder: "/downloads",
+        });
+
+        expect(args).toContain("--cookies-from-browser");
+        expect(args).toContain("firefox");
+
+        expect(args).toContain("--ffmpeg-location");
+        expect(args).toContain("/mock/ffmpeg");
+
+        expect(args).toContain("--js-runtimes");
+        expect(args).toContain("deno:/mock/deno");
+
+        expect(args).toContain("--merge-output");
+        expect(args).toContain("mp4");
+
+        expect(args).toContain("-f");
+        expect(args).toContain("bestvideo+bestaudio/best/mp4");
+
+        expect(args).toContain(
+            path.join("/downloads", "%(title)s.%(ext)s")
+        );
+
+        expect(args.at(-1)).toBe("https://youtube.com/watch?v=123");
+    });
+
+    test("builds audio-only arguments", () => {
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: true,
+            quality: "best",
+            outputFolder: "/downloads",
+        });
+
+        expect(args).toContain("--extract-audio");
+        expect(args).toContain("--audio-format");
+        expect(args).toContain("mp3");
+        expect(args).toContain("bestaudio");
+
+        expect(args).not.toContain("--merge-output");
+    });
+
+    test("uses requested quality", () => {
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "720",
+            outputFolder: "/downloads",
+        });
+
+        expect(args).toContain(
+            "bestvideo[height<=720]+bestaudio/best[height<=720]/mp4"
+        );
+    });
+
+    test("falls back to best for unknown quality", () => {
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "unknown",
+            outputFolder: "/downloads",
+        });
+
+        expect(args).toContain("best");
+    });
+
+    test("uses --no-playlist by default", () => {
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "best",
+            outputFolder: "/downloads",
+        });
+
+        expect(args).toContain("--no-playlist");
+        expect(args).not.toContain("--yes-playlist");
+    });
+
+    test("uses --yes-playlist when enabled", () => {
+        configFeatures.autoDownloadPlaylist = true;
+
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "best",
+            outputFolder: "/downloads",
+        });
+
+        expect(args).toContain("--yes-playlist");
+        expect(args).not.toContain("--no-playlist");
+
+        configFeatures.autoDownloadPlaylist = false;
+    });
+
+    test("embeds thumbnail and metadata when enabled", () => {
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "best",
+            outputFolder: "/downloads",
+        });
+
+        expect(args).toContain("--embed-thumbnail");
+        expect(args).toContain("--add-metadata");
+    });
+
+    test("logs codec validation", () => {
+        buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "best",
+            outputFolder: "/downloads",
+        });
+
+        expect(logger.info).toHaveBeenCalledWith("Codec Valid: h264");
+    });
+
+    test("falls back to h264 when codec is invalid", () => {
+        configFeatures.customCodec = "invalid";
+
+        const args = buildYtDlpArgs({
+            url: "https://youtube.com/watch?v=123",
+            audioOnly: false,
+            quality: "best",
+            outputFolder: "/downloads",
+        });
+
+        expect(logger.error).toHaveBeenCalledWith(
+            "Codec not valid: invalid. Using default codec"
+        );
+
+        const sortIndex = args.indexOf("-S");
+        expect(args[sortIndex + 1]).toContain("vcodec:h264");
+
+        configFeatures.customCodec = "h264";
+    });
+});
--- a/test/unit/notify.helpers.test.js
+++ b/test/unit/notify.helpers.test.js
@@ -0,0 +1,133 @@
+const mockShow = jest.fn();
+const mockOn = jest.fn();
+const mockOpenPath = jest.fn();
+const mockOpenExternal = jest.fn();
+
+jest.mock("electron", () => ({
+    Notification: jest.fn().mockImplementation(() => ({
+        show: mockShow,
+        on: mockOn,
+    })),
+    shell: {
+        openPath: mockOpenPath,
+        openExternal: mockOpenExternal,
+    },
+}));
+
+jest.mock("../../server/helpers/path.helpers", () => ({
+    iconPaths: {
+        confirm: "/icons/confirm.png",
+        error: "/icons/error.png",
+    },
+}));
+
+jest.mock("../../server/logger", () => ({
+    logger: {
+        info: jest.fn(),
+        error: jest.fn(),
+    },
+}));
+
+const { Notification, shell } = require("electron");
+
+const {
+    notifyDownloadFinished,
+    notifyCookiesBrowserError,
+    notifyFirefoxBrowserMissing,
+} = require("../../server/helpers/notify.helpers");
+
+describe("notify.helpers", () => {
+    beforeEach(() => {
+        jest.clearAllMocks();
+    });
+
+    describe("notifyDownloadFinished", () => {
+        test("does nothing when notifications are disabled", () => {
+            notifyDownloadFinished("/downloads", false);
+
+            expect(Notification).not.toHaveBeenCalled();
+        });
+
+        test("does nothing when folder is missing", () => {
+            notifyDownloadFinished(undefined, true);
+
+            expect(Notification).not.toHaveBeenCalled();
+        });
+
+        test("creates and shows notification", () => {
+            notifyDownloadFinished("/downloads");
+
+            expect(Notification).toHaveBeenCalledWith({
+                title: "Freedom Loader",
+                body: "Your download is complete, click here to open it.",
+                icon: "/icons/confirm.png",
+            });
+
+            expect(mockOn).toHaveBeenCalledWith(
+                "click",
+                expect.any(Function)
+            );
+
+            expect(mockShow).toHaveBeenCalled();
+        });
+
+        test("opens folder when notification is clicked", () => {
+            notifyDownloadFinished("/downloads");
+
+            const callback = mockOn.mock.calls[0][1];
+            callback();
+
+            expect(shell.openPath).toHaveBeenCalledWith("/downloads");
+        });
+    });
+
+    describe("notifyCookiesBrowserError", () => {
+        test("creates notification", () => {
+            notifyCookiesBrowserError();
+
+            expect(Notification).toHaveBeenCalledWith({
+                title: "Cookies Error",
+                body: "Unable to retrieve cookies. Please log in to your browser and click here to view the tutorial.",
+                icon: "/icons/error.png",
+            });
+
+            expect(mockShow).toHaveBeenCalled();
+        });
+
+        test("opens tutorial when clicked", () => {
+            notifyCookiesBrowserError();
+
+            const callback = mockOn.mock.calls[0][1];
+            callback();
+
+            expect(shell.openExternal).toHaveBeenCalledWith(
+                "https://youtube.com/shorts/cN9f4s1Mf88?si=519QCVd_-fzJqRf1"
+            );
+        });
+    });
+
+    describe("notifyFirefoxBrowserMissing", () => {
+        test("creates notification", () => {
+            notifyFirefoxBrowserMissing();
+
+            expect(Notification).toHaveBeenCalledWith({
+                title: "Firefox Missing",
+                body: "Firefox was not found on your system. Click here to follow the installation guide",
+                icon: "/icons/error.png",
+            });
+
+            expect(mockShow).toHaveBeenCalled();
+        });
+
+        test("opens installation guide when clicked", () => {
+            notifyFirefoxBrowserMissing();
+
+            const callback = mockOn.mock.calls[0][1];
+            callback();
+
+            expect(shell.openExternal).toHaveBeenCalledWith(
+                "https://youtube.com/shorts/cN9f4s1Mf88?si=519QCVd_-fzJqRf1"
+            );
+        });
+    });
+});
--- a/theme/dark.zip
+++ b/theme/dark.zip
--- a/theme/light.zip
+++ b/theme/light.zip
Author	SHA1	Message	Date
MasterAcnolo	5f28aa502a	fix: discord RPC on Linux, creating symlink between Discord and Freedom Loader at start if needed	2026-08-08 10:51:10 +02:00
MasterAcnolo	4a10ef2614	refactor: app display in front end. To make difference more obvious between bundled and not	2026-08-08 10:50:39 +02:00
MasterAcnolo	1296199f65	add: somes startup configuration for dev	2026-08-08 10:50:18 +02:00
MasterAcnolo	764b566699	update: bump version to 1.6.2	2026-08-08 10:12:21 +02:00
MasterAcnolo	0c568c1e8d	fix: small fixes in README and update project structure	2026-08-08 10:12:06 +02:00
MasterAcnolo	dae4dd852f	add: nodemon configuration for developpment env	2026-08-08 09:28:03 +02:00
MasterAcnolo	e5c5542750	add: nodemon configuration for developpment env	2026-08-08 09:28:01 +02:00
MasterAcnolo	9b2c6c9552	fix: release.sh version format	2026-08-07 23:28:24 +02:00
MasterAcnolo	871ebe2498	refactor: enhance log format by adding color when app is run in an IDE or a Terminal	2026-08-07 23:28:00 +02:00
Axel Nicolas	730069a3c6	Merge pull request #46 from MasterAcnolo/1.6.1 1.6.1	2026-08-07 22:27:33 +02:00
MasterAcnolo	7a0cbd7456	refactor: changed /info router from POST to GET	2026-08-07 21:13:12 +02:00
MasterAcnolo	5d676b45e7	refactor: moved "Auto Fetch Info" settings to advanced settings	2026-08-07 21:06:11 +02:00
MasterAcnolo	a7f3d84a7d	fix: log start format and smalls coms fix	2026-08-07 21:04:28 +02:00
MasterAcnolo	fbce5e5b7b	update: dependencies	2026-08-05 22:51:55 +02:00
MasterAcnolo	cc7cc38392	feat: automatic release creation with scripts	2026-08-05 22:51:31 +02:00
MasterAcnolo	6a9e5a063b	refactor: notify.helpers.js logic. Add a timeout and a better notification management to avoid race condition on Unix Systems	2026-08-05 22:16:15 +02:00
MasterAcnolo	cf8c95711c	refactor: notify.helpers.js logic. Add a timeout and a better notification management to avoid race condition on Unix Systems	2026-08-05 22:15:53 +02:00
MasterAcnolo	3683e4245f	fix: enhance readme with keepPlaylistOrder information. And fix some typo to fix Linux Env	2026-08-05 22:10:44 +02:00
MasterAcnolo	01affd8ddf	feat: Keep Playlist Order features. Add index before title if it's a playlist and we activate this feature.	2026-08-05 21:52:14 +02:00
MasterAcnolo	faba3f516b	fix: unit test wrong folder	2026-08-05 21:49:37 +02:00
MasterAcnolo	c1d9448a2b	fix: bump version to 1.6.1 and update electron to 43.3.0	2026-08-05 21:49:25 +02:00
MasterAcnolo	1bff8376b4	fix: force artifact name for exe	2026-08-04 22:04:20 +02:00
MasterAcnolo	3f44c01bd7	fix: refresh config at every download. Used by CreatePlaylistFolder	2026-08-04 22:03:55 +02:00
MasterAcnolo	d0bdd887e3	fix: exclude dist, release and build folder from jest config	2026-08-02 21:40:39 +02:00
MasterAcnolo	609ac2eadb	fix: better dev mode comparaison, useful for tests	2026-08-02 09:25:39 +02:00
MasterAcnolo	c484d322bf	feat: unit tests for buildArgs and Notify	2026-08-02 09:25:05 +02:00
Axel Nicolas	b321a1d164	Merge pull request #45 from MasterAcnolo/linux-version 1.6.0 - Linux version	2026-07-28 21:38:03 +02:00
MasterAcnolo	89e6fcf9bc	fix: snap Store package.json arguments	2026-07-28 20:43:04 +02:00
MasterAcnolo	ba2f317551	fix: snap Store mention in SECURITY.md	2026-07-28 20:42:51 +02:00
MasterAcnolo	553e383c94	refactor: rpm package publish	2026-07-27 22:40:30 +02:00
MasterAcnolo	89cc0b85a3	refactor: rpm package publish	2026-07-27 22:40:22 +02:00
MasterAcnolo	abd0bf9006	refactor: rpm package publish	2026-07-27 22:40:19 +02:00
MasterAcnolo	653f73805e	fix: enhance package.json and rename linux package to freedom-loader	2026-07-27 22:15:19 +02:00
Axel Nicolas	4f03c5876f	Merge pull request #44 from MasterAcnolo/sync Sync	2026-07-26 15:15:52 +02:00
MasterAcnolo	a5f05f32af	fix: readme missing items and [!TIP]	2026-07-26 11:21:23 +02:00
MasterAcnolo	0d1b1e4919	refactor: security.md	2026-07-26 09:37:39 +02:00
MasterAcnolo	0e77a94ec7	feat: enhance logger by displaying systeminfo at start of the app	2026-07-26 09:37:27 +02:00
MasterAcnolo	7f481d20b2	sync: update dependencies and this is ready for windows	2026-07-25 12:49:36 +02:00
MasterAcnolo	1ff32ca021	sync: to work on windows	2026-07-25 11:32:48 +02:00
MasterAcnolo	90d8a9f65d	fix: correct use of logger for path.helpers.js	2026-07-22 20:41:54 +02:00
MasterAcnolo	d5965c2ce0	fix: bring back theme features for Linux	2026-07-22 18:44:30 +02:00
MasterAcnolo	15f59a6093	fix: bring back theme features for Linux	2026-07-22 18:16:33 +02:00
MasterAcnolo	8b31436e25	feat: publish package to fedora copr, add script to automaticaly build and upload the file. Enhance readme and fix auto updater issue	2026-06-29 10:44:17 +02:00
MasterAcnolo	7d5203001b	add: BINARIES.md readme file. About how to install the binaries for dev mode	2026-06-28 21:49:53 +02:00
MasterAcnolo	60709c4fad	fix: don't show dialog box if no previous version is available.	2026-06-28 21:48:24 +02:00
MasterAcnolo	2fb6509edc	add: dark.zip and white.zip theme to the repo	2026-06-28 21:34:26 +02:00
MasterAcnolo	eebce83976	fix: small code quality and mismatch.	2026-06-28 21:34:00 +02:00
MasterAcnolo	a56a070bc8	feat: support Linux. Refactor resources architecture. Create build script Currently, themes are disabled and firefox notification too.	2026-06-28 21:32:49 +02:00
MasterAcnolo	e1ef7032bb	add: default theme applied in app. If no theme is there	2026-06-18 21:55:50 +02:00
MasterAcnolo	e7333b7b6b	fix: missing enableHardwareAcceleration settings in readme	2026-06-10 21:43:38 +02:00
Axel Nicolas	e2b51d32d1	Merge pull request #43 from MasterAcnolo/1.6.0 1.5.1	2026-06-02 22:47:40 +02:00
MasterAcnolo	81515c6ab8	fix: revert version to 1.5.1 in package.json and README.md	2026-06-02 22:35:29 +02:00
MasterAcnolo	c88189b44f	feat: add Devtron in dev mode remove unused settings item add setting to disable hardware acceleration (enabled by default) optimize main.js startup loading	2026-06-01 22:39:12 +02:00
MasterAcnolo	b745ebd29f	fix: display "dev" in app version if the app is not packaged	2026-05-31 21:45:56 +02:00
MasterAcnolo	13ee4c170b	fix: fix width for form	2026-05-31 21:12:35 +02:00
MasterAcnolo	0218664c5a	refactor: add full documentation and fix theme loading robustness - Add JSDoc comments across frontend and backend modules - Improve code readability and maintainability with consistent documentation style - Document Electron IPC handlers, UI utilities, and theme system - Add missing function/class documentation in theme loader and app services - Minor structural improvements and cleanup across Electron main process modules - Minor fixes on variable names	2026-05-31 20:38:42 +02:00
MasterAcnolo	6afc5e06d6	fix: app startup. Can't start another instance now.	2026-05-31 15:48:20 +02:00
MasterAcnolo	519dcad6e6	fix: rename localMode => devMode for clarity	2026-05-29 07:42:49 +02:00
MasterAcnolo	ac94d68224	fix: rename localMode => devMode for clarity	2026-05-29 07:42:38 +02:00
MasterAcnolo	0f876fcb70	fix: update dependencies	2026-05-29 07:41:54 +02:00
MasterAcnolo	a6c11ba7c4	update: version for 1.6.0	2026-05-15 19:57:33 +02:00
MasterAcnolo	44132dd7b5	fix: update dependencies	2026-05-11 21:14:00 +02:00
MasterAcnolo	15ab6892b7	Fix: remove duplication roadmap (now full in website)	2026-05-01 12:07:39 +02:00
MasterAcnolo	725b6f0ada	Fix: Configuration File Location	2026-04-15 13:55:13 +02:00
MasterAcnolo	ad0e4f858b	Fix: missing options in readme	2026-04-15 13:50:39 +02:00
MasterAcnolo	68108e3a66	Update Workshop link to GitHub repository	2026-04-14 11:28:53 +02:00