chore: update Market Insights entry card UI (#28029)

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## **Description**

UI update for the Market Insights entry card, and adds the skeleton
piece as well.

<img width="398" height="148" alt="Screenshot 2026-03-27 at 11 19 11"
src="https://github.com/user-attachments/assets/ba8a7c7a-234b-453a-8baf-b4f9304f10ba"
/>


https://github.com/user-attachments/assets/5ded82fe-65cd-4f5a-837f-cacdb98e5a78

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## **Related issues**

Fixes:

## **Manual testing steps**

```gherkin
Feature: my feature name

  Scenario: user [verb for user action]
    Given [describe expected initial app state]

    When user [verb for user action]
    Then [describe expected outcome]
```

## **Screenshots/Recordings**

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### **Before**

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### **After**

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## **Pre-merge author checklist**

- [ ] I've followed [MetaMask Contributor
Docs](https://github.com/MetaMask/contributor-docs) and [MetaMask Mobile
Coding
Standards](https://github.com/MetaMask/metamask-mobile/blob/main/.github/guidelines/CODING_GUIDELINES.md).
- [ ] I've completed the PR template to the best of my ability
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Not required for external contributors.

## **Pre-merge reviewer checklist**

- [ ] I've manually tested the PR (e.g. pull and build branch, run the
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in the ticket it closes and includes the necessary testing evidence such
as recordings and or screenshots.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Medium Risk**
> Moderate UI/animation refactor (Reanimated/SVG worklets, timed
carousel) that could introduce visual regressions or extra
render/animation cost, plus conditional rendering changes for loading
states.
> 
> **Overview**
> Updates the Market Insights entry card presentation: adds gradient
“chrome” styling (title, sparkle, arrow), replaces the static body copy
with a rotating `SlidingTextCarousel` of trend descriptions (falls back
to summary), and tweaks layout/interaction from `Pressable` to
`TouchableOpacity`.
> 
> Refactors `AnimatedGradientBorder` to use a trail-aligned animated SVG
gradient and a new `animationKey` trigger (re-fires on visibility and on
carousel slide starts), with new polyline-based border sampling to align
dash offset with gradient head/tail.
> 
> Introduces `MarketInsightsEntryCardSkeleton` (and new
`ENTRY_CARD_SKELETON` test id) and updates Token Details + Perps Market
Details to show the skeleton while insights are loading, otherwise hide
the section when not loading and no report.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
6e5a52c. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Xavier Brochard <xavier.brochard@consensys.net>

Author: zone-live

app/components/UI/MarketInsights/MarketInsights.testIds.ts

@@ -2,6 +2,7 @@ export enum MarketInsightsSelectorsIDs {
   ENTRY_CARD = 'market-insights-entry-card',
   ENTRY_CARD_HEADLINE = 'market-insights-entry-card-headline',
   VIEW_CONTAINER = 'market-insights-view-container',
+  ENTRY_CARD_SKELETON = 'market-insights-entry-card-skeleton',
   VIEW_SKELETON = 'market-insights-view-skeleton',
   VIEW_HEADER = 'market-insights-view-header',
   TREND_ITEM = 'market-insights-trend-item',

app/components/UI/MarketInsights/components/MarketInsightsEntryCard/AnimatedGradientBorder.constants.ts

@@ -3,32 +3,54 @@ import { brandColor } from '@metamask/design-tokens';
 /** Duration of the sweep traveling around the border in ms */
 export const BORDER_SWEEP_DURATION_MS = 1000;
 
-/** Border radius matching Tailwind's rounded-2xl (16px) */
-export const BORDER_RADIUS = 16;
+/** Border radius matching Tailwind's rounded-xl (12px) */
+export const BORDER_RADIUS = 12;
 
 /** Stroke width of the sharp main border line */
-export const BORDER_STROKE_WIDTH = 3;
+export const BORDER_STROKE_WIDTH = 2.5;
 
 /** Fraction of the perimeter visible as the sweep segment
  * How long the trail is
  */
-export const BORDER_TRAIL_FRACTION = 0.4;
+export const BORDER_TRAIL_FRACTION = 0.5;
 
-/** Fraction of progress used for the fade-in at the start of the sweep
- * How long the fade-in is
+/**
+ * Elastic trail: at sweep start/end the trail length is this fraction of
+ * the peak length (`BORDER_TRAIL_FRACTION * perimeter`). Middle of sweep uses
+ * the full peak length. 1 disables compression at the ends.
  */
-export const BORDER_FADE_IN_FRACTION = 0.8;
+export const BORDER_TRAIL_ELASTIC_END_RATIO = 0.5;
 
-/** Fraction of progress used for the fade-out at the end of the sweep
- * How long the fade-out is
+/**
+ * Constant phase added to `strokeDashoffset` (`perimeter * this`), independent
+ * of animation progress (rotates where the dash sits on the path).
  */
-export const BORDER_FADE_OUT_FRACTION = 0.8;
+export const BORDER_DASH_START_SHIFT_FRACTION = 0.4;
 
-/** Gradient stop colors: pink/purple → orange */
-export const BORDER_GRADIENT_COLORS = [
-  brandColor.purple300,
-  brandColor.orange400,
-] as const;
+/**
+ * Normalized sweep at `p === 0`. See `AnimatedGradientBorder` worklet:
+ * `sweepT = start + p * (end - start)`, `pathPhase = 1 - sweepT`.
+ */
+export const BORDER_SWEEP_PATH_START_FRACTION = 0;
+
+/** Normalized sweep position when the animation completes (`p === 1`). */
+export const BORDER_SWEEP_PATH_END_FRACTION = 1;
+
+/**
+ * Opacity fade-in completes at this animation progress (`p`). Lower = trail
+ * reaches full opacity sooner. Fade-in uses smoothstep `u²(3-2u)` in the worklet.
+ * If `BORDER_TRAIL_OPACITY_FADE_OUT_START_FRACTION` is greater than this value,
+ * opacity stays at 1 until fade-out starts; if equal, fade-out begins as soon
+ * as fade-in completes (no hold).
+ */
+export const BORDER_TRAIL_OPACITY_FADE_IN_END_FRACTION = 0.7;
+
+/**
+ * Opacity fade-out begins at this `p` (cubic ease-out to 0 at `p === 1`).
+ * Use a value strictly greater than `BORDER_TRAIL_OPACITY_FADE_IN_END_FRACTION`
+ * for a full-opacity plateau between the two phases.
+ */
+export const BORDER_TRAIL_OPACITY_FADE_OUT_START_FRACTION = 0.8;
 
 /** Fraction of the card that must be visible on-screen to trigger the animation (1 = fully visible) */
 export const VISIBILITY_THRESHOLD = 1;