Modernization and Transition to Manifest V3

[VreelXYZ]

This update brings the Widevine L3 Decrypter to modern browser standards while significantly improving the user experience with a complete UI overhaul and functional refinements.

🧪 Compatibility & Testing:

Tested on: Google Chrome (Latest Version).
Target Platforms: Designed to be compatible with all Chromium-based browsers (Edge, Brave, Opera, etc.) that support Manifest V3.

🛠 Technical Changes (Manifest V3 Migration)

• Manifest Architecture: Migrated from Manifest V2 to Manifest V3.
• Service Worker: Converted the legacy background page into a high-performance Service Worker (background.js).
• Communication Layer: Implemented chrome.runtime.sendMessage for robust communication between the popup and the background service worker.
• Native Popup: Switched from manual chrome.windows.create logic to the native default_popup implementation in manifest.json, ensuring the extension behaves like a modern tool.

🎨 Design & UI/UX Overhaul

• Dark Theme: Implemented a "Flutter-inspired" dark aesthetic using a deep indigo/slate palette (#0f172a).
• Responsive Layout: Increased the default width to 800px to provide better readability for long PSSH and License strings. Optimized the layout to be clean, centered, and professional.
• Micro-interactions: Added smooth transitions, hover effects on buttons, and styled scrollbars for a premium feel.
• History Page: Fully redesigned the history window to match the main application’s look and feel.

✨ New Features & Improvements

• One-Click Copy: Added convenient "Copy" buttons for PSSH, License URL, and the Resulting Keys.
• Clean Key Output: The results are now automatically cleaned. We removed unnecessary scheme prefixes (e.g., 0000...:0000...), so you get raw, ready-to-use keys immediately.
• Enhanced Error Diagnostics: Removed generic "Error" messages. The UI now displays the actual server response from the license server, making it much easier to debug failed requests.
• Optimized Formats: Standardized input fields and buttons with subtle borders and clear focus states.

🐛 Bug Fixes

• Fixed the issue where the popup would open as a separate browser window instead of a standard extension menu.
• Resolved layout "clipping" issues for users on high-density displays.
• Improved the cleanup of the result field between different decryption attempts.