feat(capsule): animated thinking shine indicator

[appergb]

User description

Summary

• 把 transcribing / polishing 阶段的胶囊从 "三个圆点 + 文案" 换成扫光的 thinking 文字效果
• 字号 11 → 14，字重 500，linear-gradient + background-clip: text 实现扫光
• 进入流式头 2 秒走 0.9s 高速扫光（提示「刚开始」），之后切到 2.4s 稳态；duration 变化时浏览器不重启动画，会平滑减速
• 5 个 locale 的 `capsule.thinking` 文案统一为 'thinking'（小写英文），与扫光字面视觉一致

Test plan

• `npm run build` pass
• 真机验证：录音 → 转写 → 润色全程胶囊文字扫光动画顺滑，状态切换有淡入提示
• 中英日韩繁五种 locale 下扫光字面尺寸排版一致

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PR Type

Enhancement

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Description

• Replaced processing dots with thinking shine

• Added fast-then-slow shimmer timing

• Faded in state transitions

• Unified thinking text across locales

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Diagram Walkthrough

flowchart LR
  A["Capsule processing state"] -- "renders" --> B["Shining thinking text"]
  B -- "uses" --> C["Fast burst then steady shimmer"]
  B -- "applies" --> D["State enter fade-in"]
  E["Locale strings"] -- "normalize to" --> F["thinking"]
  F -- "feeds" --> B

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File Walkthrough

	Relevant files
Enhancement	Capsule.tsx Replace dots with animated thinking shine                                openless-all/app/src/components/Capsule.tsx Removed the ProcessingDots indicator entirely. Rendered thinking as gradient-clipped animated text. Added a fast initial shimmer, then steady speed. Added a brief state-enter fade for transitions. +46/-29
Localization	en.ts Normalize English thinking label                                                  openless-all/app/src/i18n/en.ts Changed capsule.thinking from Thinking… to thinking. Keeps the visual label aligned with the new shine effect. +1/-1      ja.ts Normalize Japanese thinking label                                                openless-all/app/src/i18n/ja.ts Changed capsule.thinking from Japanese text to thinking. Removes locale-length variance from the capsule layout. +1/-1      ko.ts Normalize Korean thinking label                                                    openless-all/app/src/i18n/ko.ts Changed capsule.thinking from Korean text to thinking. Ensures consistent width for the animated text treatment. +1/-1      zh-CN.ts Normalize Simplified Chinese thinking label                            openless-all/app/src/i18n/zh-CN.ts Changed capsule.thinking from Chinese text to thinking. Aligns the displayed text with the new shimmer styling. +1/-1      zh-TW.ts Normalize Traditional Chinese thinking label                          openless-all/app/src/i18n/zh-TW.ts Changed capsule.thinking from Chinese text to thinking. Keeps the capsule label visually consistent across locales. +1/-1

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[github-actions]

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