Refactor app by modularizing components and extracting utilities.

The changes split large features into smaller, reusable components like `AdminPanel`, `LoginPage`, `TopBar`, `PasswordModal`, and `ChipModal`. Utility functions such as `cycleTag` and `chipStorage` were extracted for better organization. This improves the code's readability, maintainability, and scalability.

frontend/src/styles/theme.js

@@ -0,0 +1,11 @@
+export const stylesTokens = {
+    pageBg: "#0b0b0c",
+    panelBg: "rgba(20, 20, 22, 0.55)",
+    panelBorder: "rgba(233, 216, 166, 0.14)",
+
+    textMain: "rgba(245, 239, 220, 0.92)",
+    textDim: "rgba(233, 216, 166, 0.70)",
+    textGold: "#e9d8a6",
+
+    goldLine: "rgba(233, 216, 166, 0.18)",
+  };