fix(seekbar): pulsewave clean connection, retrotape rolling wheel at playhead

Pulsewave: draw flat played line only up to where the Gaussian envelope
starts (startX), eliminating overlap between the flat line and the wave.

Retrotape: replace dual fixed-position reels with a single spinning reel
that tracks the playhead position across the full seek bar width.

fix(i18n): remove literal 'N' from skip-star descriptions in all languages

Replace 'After N skips' with natural phrasing ('after several skips') in
EN, FR, NL, NB, ZH. Simplify ratingsSkipStarThresholdLabel to a single
word (Skips / Sauts / Overslagen / Hopp / 跳过次数). DE was already fixed.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/locales/en.ts

@@ -507,8 +507,8 @@ export const enTranslation = {
     ratingsSectionTitle: 'Ratings',
     ratingsSkipStarTitle: 'Skip for 1 star',
     ratingsSkipStarDesc:
-      'After N skips in a row, set the track to 1★. Only for tracks not rated before.',
-    ratingsSkipStarThresholdLabel: 'Skips before 1★',
+      'After several skips in a row, set the track to 1★. Only for tracks not yet rated.',
+    ratingsSkipStarThresholdLabel: 'Skips',
     ratingsMixFilterTitle: 'Filter by rating',
     ratingsMixFilterDesc:
       'Filter low-rated items in {{mix}} and {{albums}}. Click the selected star again to turn off the threshold.',