feat: Implement advanced foil effects with rolling rainbow, circular glare, and mobile entrance animations, alongside a fix for foil rendering on non-foil cards.

docs/development/devlog/2025-12-17-021500_entrance_animation_fix.md

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+# Entrance Animation Fix
+
+## Objective
+Ensure the card preview plays the "scale-up fade-in" animation when it first appears (mounting), not just when disappearing.
+
+## Changes
+- Modified `FloatingPreview` in `src/client/src/components/CardPreview.tsx`:
+    - Introduced a generic `isMounted` state initialized to `false`.
+    - Added a `useEffect` that sets `isMounted` to `true` on the next animation frame after mount.
+    - Updated CSS logic to check a combined `isActive` state (`isMounted && !isClosing`).
+    - **Logic**:
+        - **Mount (0ms)**: `isActive` is false `->` `opacity-0 scale-95`.
+        - **Next Frame (~16ms)**: `isMounted` becomes true `->` `isActive` becomes true `->` `transition-all` triggers to `opacity-100 scale-100`.
+        - **Unmount Trigger**: `isClosing` becomes true `->` `isActive` becomes false `->` Transitions back to `opacity-0 scale-95`.
+
+## Result
+The card preview now smoothly "pops in" from 95% scale and 0 opacity every time it is triggered, providing a consistent, high-quality feel to the UI interactions.