chore(sync): 同步 upstream/main 并保留本地功能增强

- 合入 upstream v1.0.8（设置重构、音频恢复与发布流程更新）

- 保留本地多语言与 Qwen ASR 配置能力，并融合会话流程改动

- 重新生成 Xcode 工程以纳入 Localization 源文件，确保构建通过

feat: 增加界面多语言与设置向导快捷键兼容

- 新增 SPLocalization，本地化状态栏、向导、Overlay 与通知文案

- 在配置中新增 ui.language（默认 en，可设 zh），并补充对应单元测试

- 修复 Setup Wizard 输入框中 Command 复制粘贴快捷键被热键监听干扰的问题

feat(warning): notify user when LLM correction fails with fallback

Add on_session_warning callback in FFI for non-fatal warnings. When the
LLM API call fails (e.g. invalid API key), the app still pastes the raw
ASR text but now sends a system notification informing the user that LLM
correction was skipped and why.

feat(overlay): add floating status pill above Dock

Add a borderless overlay panel at the bottom-center of the screen that
shows the current session state with animated visuals: waveform bars for
recording, bouncing dots for processing, animated checkmark for pasting,
and an X for errors. Auto-hides on idle with fade transitions.

Bump version to 1.0.5 (build 6).

feat(hotkey): add configurable trigger key with auto-reload

Add hotkey.trigger_key config option supporting fn, left_option,
right_option, left_command, and right_command. Config changes are
detected automatically via file polling (every 3s) and applied
without app restart.

Also fix LLM system prompt inserting unwanted punctuation, add
koe-setup skill for AI-assisted onboarding, and update README
with new hotkey and skill documentation.

feat(asr): upgrade to ASR 2.0 with two-pass recognition

- Switch to Doubao ASR 2.0 model (volc.seedasr.sauc.duration) and
  optimized streaming endpoint (bigmodel_async)
- Enable two-pass recognition (enable_nonstream) for higher accuracy:
  streaming results return in real-time, then non-streaming model
  re-recognizes each confirmed segment
- Fix hotwords to use corpus.context format per official API docs
- Add Definite event type for high-confidence two-pass results
- Pass ASR interim revision history to LLM for better error correction
- Set dictionary_max_candidates default to 0 (send all entries)
- Add detailed logging for ASR request params and LLM prompts
- Bump version to 1.0.3