fix(web): all accent text and icons use accent-fg (#5318)

The raw accent fails AA as text on every dark surface, not only on its
own tint: 3.04:1 on the page, 2.70 on iron, 2.21 on slate, against 4.5.
accent-fg (the house formula, 45% toward parchment) measures 5.62 at
worst across both modes. The operator chose the readable colour over the
signature teal for text, on 2026-10-08.

- 36 sites swap. They are 35 Tailwind uses: links, "Now playing", the
  ingest progress line, active shuffle/repeat, the liked heart, the app
  download icon and its hover. The last is the alphabet rail's pending
  spinner in CSS. Icons follow the text: as graphics they need only
  3:1, and the raw accent misses even that on iron.
- check-tint-contrast adds accent to TEXT_NEVER_RAW, so a new raw
  text-accent or color: var(--fs-accent) fails the web lane. Run against
  the files before the swap, it finds all 36. Borders, rings and fills
  keep the raw accent.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/scripts/check-tint-contrast.test.js

@@ -42,6 +42,13 @@ describe('hue-on-own-tint check (#3150)', () => {
       expect(findRawText(`.msg { color: var(--fs-error); }`)[0].fix).toBe('var(--fs-error-fg)');
     });
 
+    test('raw accent text is caught too, including hover: variants (#5318)', () => {
+      expect(findRawText(`<a class="text-sm text-accent hover:underline">`)[0].fix).toBe('text-accent-fg');
+      expect(findRawText(`<a class="hover:text-accent">`)).toHaveLength(1);
+      expect(findRawText(`.pending { color: var(--fs-accent); }`)[0].fix).toBe('var(--fs-accent-fg)');
+      expect(findRawText(`<a class="text-accent-fg border-accent">`)).toEqual([]);
+    });
+
     test('passes error-fg, and error as a border or outline', () => {
       expect(findRawText(`<p class="text-error-fg">x</p>`)).toEqual([]);
       expect(findRawText(`<div class="border-error" class:border-error={bad}>`)).toEqual([]);