Other Changes
- Fix SupportedLanguages DIM test by enabling CallBase on mock
- Refresh profile transcription model list on plugin state changes
- Improve OpenAI Compatible plugin connection UX and remove inline styles
- Migrate all settings sections to WPF-UI controls
- Migrate PluginsSection to WPF-UI with CardExpander and fix expand state
- Add WPF-UI Fluent Design and migrate SettingsWindow to FluentWindow
- Add OpenAI Compatible plugin for local LLM servers
- Extract local models into SherpaOnnx plugin and unify Models UI
- Refresh plugin and model lists live after marketplace install/uninstall
- Add plugin system parity: IActionPlugin, streaming, marketplace, and localization
- Add prompt palette for AI-powered text processing via hotkey