style(design): apply Minimal Dark Mode design system\n\n- Switched to complete Dark Mode (OLED-friendly)\n- Established standard color palette matching modern technical aesthetics\n- Changed font to Plus Jakarta Sans for increased legibility\n- Enforced dark mode as default in App.tsx\n- Fixed several React cascading render (setState in useEffect) warnings

.agent/skills/vercel-react-best-practices/rules/advanced-init-once.md

@@ -1,42 +1,42 @@
----
-title: Initialize App Once, Not Per Mount
-impact: LOW-MEDIUM
-impactDescription: avoids duplicate init in development
-tags: initialization, useEffect, app-startup, side-effects
----
-
-## Initialize App Once, Not Per Mount
-
-Do not put app-wide initialization that must run once per app load inside `useEffect([])` of a component. Components can remount and effects will re-run. Use a module-level guard or top-level init in the entry module instead.
-
-**Incorrect (runs twice in dev, re-runs on remount):**
-
-```tsx
-function Comp() {
-  useEffect(() => {
-    loadFromStorage();
-    checkAuthToken();
-  }, []);
-
-  // ...
-}
-```
-
-**Correct (once per app load):**
-
-```tsx
-let didInit = false;
-
-function Comp() {
-  useEffect(() => {
-    if (didInit) return;
-    didInit = true;
-    loadFromStorage();
-    checkAuthToken();
-  }, []);
-
-  // ...
-}
-```
-
-Reference: [Initializing the application](https://react.dev/learn/you-might-not-need-an-effect#initializing-the-application)
+---
+title: Initialize App Once, Not Per Mount
+impact: LOW-MEDIUM
+impactDescription: avoids duplicate init in development
+tags: initialization, useEffect, app-startup, side-effects
+---
+
+## Initialize App Once, Not Per Mount
+
+Do not put app-wide initialization that must run once per app load inside `useEffect([])` of a component. Components can remount and effects will re-run. Use a module-level guard or top-level init in the entry module instead.
+
+**Incorrect (runs twice in dev, re-runs on remount):**
+
+```tsx
+function Comp() {
+  useEffect(() => {
+    loadFromStorage();
+    checkAuthToken();
+  }, []);
+
+  // ...
+}
+```
+
+**Correct (once per app load):**
+
+```tsx
+let didInit = false;
+
+function Comp() {
+  useEffect(() => {
+    if (didInit) return;
+    didInit = true;
+    loadFromStorage();
+    checkAuthToken();
+  }, []);
+
+  // ...
+}
+```
+
+Reference: [Initializing the application](https://react.dev/learn/you-might-not-need-an-effect#initializing-the-application)