- Fixed Challenge Modal overlap issue by adjusting the main stacking context in App.tsx

- Implemented "click-outside-to-close" functionality for both the Challenge Modal and User Dropdown
- Added protocol-specific action buttons for challenges: "Open in new tab" for HTTP and "Copy to clipboard" for NC
- Enhanced Scoreboard rankings with significantly larger, consistent font sizes (text-2xl) for better readability
- Rebranded "TEAM_IDENTIFIER" to "PLAYER" and "TOTAL_POINTS" to "POINTS" across the platform (Scoreboard, Matrix, User Menu)
- Updated navigation: Renamed "SCOREBOARD" to "SCORES" in the nav bar and dynamic page titles
- Modernized User Dropdown menu with a dedicated "PLAYER" header and "LOGOUT" action
- Improved Score Matrix and Score Graph titles for consistency with the new "Player" terminology
- Added CAPTCHA human verification (svg-captcha) to Login and Registration flows for enhanced security
- Optimized frontend assets by migrating Tailwind and JetBrains Mono to local hosting
- Refactored Admin panel: Renamed "Operators" to "Users" and improved layout alignment

public/jetbrains-mono.css

@@ -0,0 +1,21 @@
+@font-face {
+  font-family: 'JetBrains Mono';
+  font-style: normal;
+  font-weight: 400;
+  font-display: swap;
+  src: url('./jetbrains-mono-400.ttf') format('truetype');
+}
+@font-face {
+  font-family: 'JetBrains Mono';
+  font-style: normal;
+  font-weight: 700;
+  font-display: swap;
+  src: url('./jetbrains-mono-700.ttf') format('truetype');
+}
+@font-face {
+  font-family: 'JetBrains Mono';
+  font-style: normal;
+  font-weight: 800;
+  font-display: swap;
+  src: url('./jetbrains-mono-800.ttf') format('truetype');
+}