fix(privacy): add Shared LevelDB PrivacyInfo and bump build to 50

Satisfy ITMS-91061 by shipping PrivacyInfo.xcprivacy inside OSGKeyboardShared.framework for librime's statically linked leveldb.

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - **Custom style mood emoji**: custom polish styles can opt in (default off) to allow emotion-matched emoji; the prompt overrides R5 and post-processing keeps them on screen. Paste-only prompts that declare emoji opt-in are detected automatically. / **自定义风格情绪 emoji**：自定义润色风格可单独开启（默认关）按情绪点缀 emoji；提示词覆盖 R5，后处理保留上屏。仅粘贴声明允许 emoji 的 prompt 也会自动识别。
 
 ### Fixed
+- **Shared LevelDB privacy manifest**: ship `PrivacyInfo.xcprivacy` inside `OSGKeyboardShared.framework` so App Store Connect no longer rejects uploads for ITMS-91061 (leveldb via librime). / **Shared LevelDB 隐私清单**：在 `OSGKeyboardShared.framework` 内打包 `PrivacyInfo.xcprivacy`，避免 App Store Connect 因 ITMS-91061（librime 内嵌 leveldb）拒收。
 - **PiP post-utterance yellow flash**: after a voice turn, the mic no longer briefly shows yellow「正在启动画中画」— hold ready once the session proved live, refresh host ready on ack, and avoid labeling an already-active PiP as `.starting`. / **PiP 句末黄色闪烁**：语音说完后麦克风不再短暂变黄并提示「正在启动画中画」——会话曾就绪后保持绿灯、ack 后立即刷新 host ready，且已激活的 PiP 不再标成 `.starting`。
 - **English Shift after Return**: sentence autocapitalization treats newline as a new-line boundary (system keyboard behavior), so Notes-style multi-line Return arms Shift again. / **回车后英文 Shift**：句首自动大写将换行视为新行边界（对齐系统键盘），备忘录等多行回车后会重新点亮 Shift。
 - **English Shift with stale proxy**: after our own insert/delete, autocap merges a local caret-prefix shadow when `documentContextBeforeInput` lags (e.g. period / Return in Notes). / **滞后前文下的英文 Shift**：自身插删后若 `documentContextBeforeInput` 滞后，自动大写会合并本地光标前文影子（如备忘录中的句号/回车）。