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> Build a mockup desktop application in Python (using a modern framework like PyQt6, PySide6, or CustomTkinter) with a sleek, modern UI. The application must support customizable accent colors and include the following features:
>  * **Dummy Login Screen:** The app must start with a login menu that accepts any username and password combination before granting access to the main window.
>  * **Main Header:** In the top-left corner of the main window, display the title "espradar" using the Counter-Strike 2 font.
>  * **User Profile (Below the title):**
>    * **Avatar:** A clickable profile image that prompts the user to change/upload a new picture when clicked.
>    * **Nickname:** Located to the right of the avatar in **bold** text, featuring inline editing (editable upon clicking).
>    * **Status Indicator:** Positioned directly below the nickname. It must display a glowing green circle next to the text "active:lifetime" (the text should also match the glowing green color).
>  * **Data Persistence:** The application must save and remember the user's selected avatar and nickname across application restarts (e.g., saving to a local JSON or config file).
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**Direct & Natural Translation**
> I need you to create a dummy desktop application in Python with a beautiful, modern UI that allows changing the accent color. First, there should be a login menu that accepts any login and password. After logging in, the main window should display the title "espradar" in the top left corner using the Counter-Strike 2 font. Below it, add an avatar (which can be changed by clicking on it), and to the right of the avatar, a bold nickname (which is also editable by clicking). Right below the nickname, add a status featuring a glowing green circle and the text "active:lifetime" in the same glowing green color. The application must also remember the changed avatar and nickname after closing and reopening.
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