feat(playback): global speed with three strategies (#852)

* feat(playback): global speed with three strategies

Add Settings → Audio and player-bar controls for global playback speed
(speed with auto pitch correction as default, varispeed, manual pitch shift).
Time-stretch runs on a background worker; Orbit sessions force 1.0× passthrough.

* fix(playback): align seekbar, seek, and progress on content timeline

Unify UI timebase across varispeed and preserve strategies: full-track
duration, speed-scaled progress for DSP paths, and content-timeline seeks
without varispeed scaling. Reset the sample counter after seek so clicks
land correctly; restart playback on strategy/enable changes instead of
fragile hot-switching.

* fix(ui): anchor playback speed popover like volume controls

Replace the centered EQ-style modal with a player-bar popover (outside
click, Escape, reposition on scroll). Show compact controls in the bar
and overflow menu; keep strategy hints and labels in Settings only.

* docs(release): CHANGELOG and credits for playback speed (PR #852)

* docs(changelog): add playback speed entry for PR #852

* fix(clippy): simplify raw_counter_samples branch for CI

Collapse duplicate if branches flagged by clippy::if-same-then-else.

* fix(ui): wheel on pitch slider adjusts pitch in speed popover

In compact player-bar controls, scroll over the pitch row changes pitch;
elsewhere in the panel changes speed. Stop propagation so overflow menu
wheel does not tweak volume.

* fix(playback): address PR #852 review and drop ineffective dynamic imports

Translate playback-rate strings for de/fr/es/zh/nb/nl/ro; restamp sample
counter on live preserve-path speed changes; use neutral rate atomics for
radio progress; static-import playerStore in playListenSession (move preview
volume sync to previewPlayerVolumeSync side-effect module).

* fix(i18n): translate playback-rate strategy labels in all locales

Replace leftover English Varispeed/Pitch strings in ru and other non-en
settings blocks so popover strategy buttons and hints read natively.

* fix(i18n): refine German varispeed label to "Tonhöhe folgt dem Tempo"

---------

Co-authored-by: Psychotoxical <171614930+Psychotoxical@users.noreply.github.com>

src/locales/zh/settings.ts

@@ -322,8 +322,24 @@ export const settings = {
   playerBarStarRating: '星级评分',
   playerBarFavorite: '收藏（心形）',
   playerBarLastfmLove: 'Last.fm 喜欢',
+  playerBarPlaybackRate: '播放速度',
   playerBarEqualizer: '均衡器',
   playerBarMiniPlayer: '迷你播放器',
+  playbackRateTitle: '播放速度',
+  playbackRateEnabled: '启用播放速度',
+  playbackRateEnabledDesc: '全局调整所有曲目的播放速度。不适用于电台和预览。',
+  playbackRateStrategy: '策略',
+  playbackRateStrategySpeed: '速度',
+  playbackRateStrategyVarispeed: '随速变调',
+  playbackRateStrategyPreserve: '音高',
+  playbackRateSpeed: '速度',
+  playbackRatePitch: '音高',
+  playbackRateDerivedPitch: '速度引起的音高偏移：{{value}}',
+  playbackRateAutoPitch: '音高会自动校正。',
+  playbackRateHint: '「速度」保持音高不变。「随速变调」会随速度改变音高。「音高」可手动偏移。比「随速变调」占用更多 CPU。不适用于电台、预览或 Orbit。',
+  playbackRateNeutral: '在 1.0× 且无音高偏移时，播放为正常速度。',
+  playbackRateOrbitPaused: 'Orbit 会话期间不生效 — 播放保持 1.0× 以同步。',
+  playbackRateOrbitPausedShort: 'Orbit：1.0× 同步。',
   advancedMode: '高级',
   advancedModeTooltip: '在所有设置选项卡中显示高级选项。由社区贡献，未必体现 Psysonic 维护者的设计理念。',
   advancedBadge: '高级',