* refactor(IpcChannel): rename theme change event and streamline theme handling
- Updated the IpcChannel enum to rename 'theme:change' to 'theme:updated' for clarity.
- Refactored theme handling in ipc.ts to utilize a new ThemeService, simplifying theme updates and event broadcasting.
- Adjusted various components to consistently use the updated theme variable naming convention.
* refactor(Theme): standardize theme handling across components
- Updated theme retrieval to use 'actualTheme' instead of 'theme' for consistency.
- Changed default theme setting from 'auto' to 'system' in ConfigManager and related components.
- Adjusted theme handling in various components to reflect the new naming convention and ensure proper theme application.
* fix(Theme): improve theme handling and migration logic
- Added a console log for debugging theme transitions in ThemeProvider.
- Updated ThemeService to ensure theme is set correctly when changed.
- Incremented version number in store configuration to reflect changes.
- Enhanced migration logic to convert 'auto' theme setting to 'system' for better consistency.
* feat(Theme): add getTheme IPC channel and improve theme management
- Introduced a new IPC channel 'App_GetTheme' to retrieve the current theme.
- Updated ThemeService to include a method for getting the current theme.
- Refactored theme initialization in WindowService to ensure proper theme setup.
- Enhanced theme handling in various components to utilize the new theme retrieval method.
* fix(ThemeService): improve theme initialization and retrieval logic
- Set default theme to 'system' and updated theme initialization to handle legacy versions.
- Enhanced getTheme method to return both the current theme and the actual theme based on nativeTheme settings.
- Removed redundant initTheme method from ThemeService and ensured themeService is imported in WindowService for proper initialization.
- Updated ThemeProvider to handle the new structure of the theme retrieval response.
* refactor(Settings): remove theme management from settings
- Eliminated theme-related state and actions from the settings slice.
- Updated useSettings hook to remove theme handling functionality.
- Cleaned up imports by removing unused ThemeMode type.
* refactor(Theme): update theme retrieval in GeneralSettings and HomeWindow
- Restored theme retrieval in GeneralSettings and HomeWindow components.
- Adjusted imports to ensure proper theme management.
- Updated theme condition checks to utilize the ThemeMode enumeration for consistency.
* refactor(Theme): update theme terminology and retrieval in Sidebar and DisplaySettings
- Changed theme label from 'auto' to 'system' in multiple localization files for consistency.
- Updated Sidebar component to reflect the new theme terminology.
- Adjusted DisplaySettings to display the updated theme label.
* refactor(ThemeProvider): initialize theme state from API response
* refactor(ThemeProvider): reset theme state to default values and streamline initialization logic
* refactor(Theme): enhance theme management by incorporating 'system' mode and updating state handling
- Updated ThemeService to include 'system' as a valid theme option.
- Refactored ThemeProvider to utilize useSettings for theme state management and ensure proper initialization.
- Adjusted useSettings to include theme setting functionality.
- Modified settings slice to manage theme state effectively.
* refactor(WindowService, ThemeProvider, Messages, HomeWindow): streamline imports and clean up unused variables
- Removed duplicate import of ThemeService in WindowService.
- Adjusted import order in ThemeProvider for clarity.
- Simplified useSettings destructuring in Messages component.
- Cleaned up unused ThemeMode import in HomeWindow.
* refactor(Theme): standardize theme usage across components by replacing 'actualTheme' with 'theme'
- Updated components to consistently use 'theme' instead of 'actualTheme' for better clarity and maintainability.
- Adjusted ThemeProvider to reflect changes in theme state management.
- Ensured all relevant components are aligned with the new theme structure.
* refactor(Theme): remove unused theme retrieval functionality
- Eliminated the App_GetTheme channel and associated methods from ThemeService and IPC handling.
- Updated components to use the new theme structure, replacing 'actualTheme' with 'settedTheme' for consistency.
- Ensured all theme-related functionalities are streamlined and aligned with the latest changes.
* refactor(Theme): update theme variable usage in ChatFlowHistory and GeneralSettings
- Replaced 'theme' with 'settedTheme' in ChatFlowHistory for consistency with recent theme structure changes.
- Simplified theme destructuring in GeneralSettings by removing unused 'themeMode' variable.
- Ensured alignment with the latest theme management updates across components.
* refactor(Theme): update theme variable in GeneralSettings component
- Replaced 'themeMode' with 'theme' in GeneralSettings for consistency with recent theme structure changes.
- Ensured alignment with the latest theme management updates across components.
---------
Co-authored-by: beyondkmp <beyondkmkp@gmail.com>
- Removed unused 'right' prop from Scrollbar component.
- Increased scrolling timeout duration for better user experience.
- Updated scrollbar styles to simplify color handling.
- Adjusted Messages component to remove unnecessary props and added margin for better layout.
- Added responsive styles to CitationBlock for improved mobile display.
- Introduced a new setting to remember the last adjusted size of the action window.
- Updated ConfigManager, SelectionService, and IPC channels to handle the new feature.
- Enhanced UI components to allow users to toggle the "Remember Size" option.
- Localized the new setting in multiple languages.
- Added a mock Redux store to the QuickPanelView tests for better state management.
- Refactored test rendering to use a wrapper function for consistent provider usage.
- Updated Scrollbar test to verify throttle behavior with new delay and options.
- Renamed variables for consistency, changing `AssistantsTabSortType` to `assistantsTabSortType`.
- Refactored tag calculation in `useTags` to utilize `uniq` and `flatMap` for better performance and readability.
- Updated localization files to remove unnecessary characters in quick trigger messages.
- Enhanced the `AssistantItem` component by extracting menu item creation logic and sorting functions for better maintainability.
- Introduced a new color selection feature in DisplaySettings, allowing users to choose from predefined theme color presets.
- Added a dedicated section for zoom settings in the DisplaySettings component, enhancing user customization options.
- Updated localization files to include new zoom settings titles in multiple languages.
- Updated styles for message content and group containers to improve layout.
- Added new selectors to exclude additional elements from navigation.
- Implemented conditional rendering for mentions in message content.
- Simplified token display logic in message tokens component.
* feat(theme): 用户自定义主题色
* refactor(QuickPanel): integrate user theme for dynamic color handling
* refactor(ThemeProvider): separate user theme initialization into its own useEffect
* refactor(useUserTheme): move theme initialization logic into a dedicated function
* feat(settings): enhance color picker with presets and update styles for ant-collapse
* feat: Refactor theme management to use userTheme object for colorPrimary
* feat: add filter mode and list functionality to selection assistant
- Introduced new filter mode options (default, whitelist, blacklist) for the selection assistant.
- Added methods to set and get filter mode and filter list in ConfigManager.
- Enhanced SelectionService to manage filter mode and list, affecting text selection processing.
- Updated UI components to allow users to configure filter settings.
- Localized new filter settings in multiple languages.
* feat: support Shift+Click & enhance Ctrl key method
* fix: remove comments
* refactor(ChatNavigation): move down the navigation bar
* refactor: attach listeners to MessagesContainer for better triggering experience
* refactor: add delay to Tooltips
* refactor: exclude some toolbars areas from triggering
feat: add filter mode and list functionality to selection assistant
- Introduced new filter mode options (default, whitelist, blacklist) for the selection assistant.
- Added methods to set and get filter mode and filter list in ConfigManager.
- Enhanced SelectionService to manage filter mode and list, affecting text selection processing.
- Updated UI components to allow users to configure filter settings.
- Localized new filter settings in multiple languages.
- Added eslint-disable comments for react-hooks/exhaustive-deps in CustomCollapse, DmxapiPage, SelectionActionApp, ActionGeneral, and ActionTranslate components to prevent warnings related to missing dependencies in useEffect hooks.
- Adjusted max token limit for 'claude-sonnet-4' and 'claude-opus-4' models from 64000 to 32000.
- Simplified reasoning checks in OpenAIProvider to combine conditions for supported models, enhancing code clarity.
* fix: increase max cache limit and update slider marks in MiniAppSettings
* fix: adjust max cache limit and update slider marks in MiniAppSettings
* Update MiniAppSettings.tsx
---------
Co-authored-by: George Zhao <georgezhao@SKJLAB>
* refactor: TrayService
- Removed the App_RestartTray channel from IpcChannel and its usage in ipc.ts and preload/index.ts.
- Updated TrayService to handle configuration changes without the need for a restart.
- Enhanced ConfigManager to notify subscribers on language and quick assistant settings changes.
- Adjusted QuickAssistantSettings to close the mini window based on the quick assistant's enable state.
* refactor: enhance configuration management
- Updated ConfigManager to consolidate setting and notification logic into a single method, setAndNotify.
- Modified IPC handler to accept an additional parameter for notification control.
- Adjusted QuickAssistantSettings to utilize the new parameter for enabling notifications during configuration changes.
- Introduced defaultPaintingProvider in settings to manage selected painting provider.
- Updated Sidebar component to reflect the selected painting provider in the route.
- Enhanced PaintingsRoutePage to dispatch the default painting provider based on URL parameters.
- Added PaintingProvider type to define available options for painting providers.
* feat: add title prototype to selection action button in compact mode
* fix: optimize the display name logic for action buttons in the selection toolbar
- Added exclusions for various distribution directories and module types to optimize the build process.
- Updated license file exclusions to be more inclusive of different casing variations.
- Updated the @google/genai dependency in package.json and yarn.lock to version 1.0.1.
- Removed the GeminiService and its related references from the codebase to streamline functionality.
- Introduced a new CacheService for managing cached data effectively.
* feat(selection): implement selection assistant with toolbar and action management
- Added selection assistant functionality including a toolbar for actions.
- Introduced new settings for enabling/disabling the selection assistant and configuring its behavior.
- Implemented action items for built-in functionalities like translate, explain, and copy.
- Integrated selection service to manage selection events and actions.
- Updated localization files to support new selection assistant features in multiple languages.
- Added new components for action management and user interaction within the selection assistant.
* chore: update selection-hook to version 0.9.10 and exclude prebuilds from packaging
* fix: toolbar hiding
* feat: enhance error handling and service management in main index
* fix: improve logical coordinate handling in SelectionService
* fix: update URL loading and coordinate conversion in SelectionService
* fix: replace console.error with Logger for error handling in SelectionService
* refactor(SelectionService): enhance preloaded action window management
* chore(electron-builder): add filter for .node build files in configuration
* fix: toolbar position calculating for multi monitor
* fix: update selection assistant configuration and improve error handling in SelectionService
* fix: SelectionActionUserModal layout
* feat: add hints for custom search URL in multiple languages
* fix: update calculateToolbarPosition to ensure integer return type and round position values
* feat: add action window opacity setting and update related UI components
refactor: SelectionActionsList
* chore: enhance tooltip for trigger mode settings
* fix: console.log
* chore: update selection-hook to version 0.9.12
* fix: integrate language settings into selection components
* fix: filter out default assistant from user predefined assistants in selection modal
* chore: update selection-hook package version to 0.9.13
* chore: update selection-hook package version to 0.9.14
* test: more unit tests
- Adjust vitest configuration to handle main process and renderer process tests separately
- Add unit tests for main process utils
- Add unit tests for the renderer process
- Add three component tests to verify vitest usage: `DragableList`, `Scrollbar`, `QuickPanelView`
- Add an e2e startup test to verify playwright usage
- Extract `splitApiKeyString` and add tests for it
- Add and format some comments
* fix: mock individual properties
* test: add tests for CustomTag
* test: add tests for ExpandableText
* test: conditional rendering tooltip of tag
* chore: update dependencies
- Consolidated edit and delete menu items for providers into separate constants for improved readability and maintainability.
- Enhanced the logic for displaying menus based on provider status, ensuring correct options are presented for system providers and initial providers.
- Updated release notes to include new DMXAPI service and fixed knowledge base search results issue.
- Enhanced drag-and-drop functionality for message selection and resolved memory exceptions in translation replies.
- Added styling adjustments for context menu and improved layout in CodeBlockView and MessageGroup components.
- Introduced a new dark mode logo for DMXAPI and updated the logo rendering logic in the DMXAPISettings component to switch between light and dark logos based on the current theme.
- Renumbered feature sections for clarity and consistency across English, Japanese, and Chinese README files.
- Improved formatting by removing unnecessary bullet points for a cleaner presentation of core features, knowledge management, platform support, and advanced features.
- Introduced throttling to the updateTranslationBlock dispatch function to limit the frequency of updates, enhancing performance during message operations.
- Utilized lodash's throttle function to ensure efficient handling of accumulated text updates.
* fix: enhance ExportService to support nested bold and italic formatting
- Added tracking for nested bold and italic tags in the ExportService.
- Updated text rendering logic to apply bold and italic styles based on the nesting level of the tags.
* fix: remove unused citation variable in messageToMarkdown function
* feat: enhance citation handling in message export functionality
- Refactored message export functions to include citation content in markdown output.
- Introduced a new utility function to extract and format citations from messages.
- Updated related imports and adjusted existing markdown generation logic for improved clarity and maintainability.
* feat: enhance message export tests to include citation and reasoning content
- Added tests to verify inclusion of citation content in markdown output when citation blocks exist.
- Ensured proper formatting with double newlines between sections in exported markdown.
- Updated existing tests to handle cases with reasoning content and no main text block gracefully.
* fix: update citation mapping in export tests for consistency
- Modified the citation mapping in export tests to use the index parameter directly, improving clarity and consistency in the generated markdown output.
* Fix: MessageMenubar copy uses latest content
The 'Copy' button in MessageMenubar was previously using memoized content
derived from component props. This could lead to copying stale content if
you edited a message (e.g., a code block), saved it, and then
immediately clicked 'Copy', because the asynchronous Redux store update
might not have completed and propagated to the props yet.
This commit modifies the onCopy function in MessageMenubar.tsx to
fetch the latest version of the message directly from the Redux store
(store.getState().messages.entities[message.id]) at the moment the
copy action is performed. This ensures that the most up-to-date content
is always copied, resolving the stale content issue.
* Chore: Remove unnecessary comments from MessageMenubar
Removes a few explanatory comments from the onCopy function in
MessageMenubar.tsx that were deemed unnecessary, to keep the code
cleaner.
The comments originated from an example provided in a previous description. The core logic of the function remains unchanged.
---------
Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
* feat: add disable MCP server functionality and update translations
* feat: update MCPToolsButton and WebSearchButton to use CircleX icon and change labels to 'close'
---------
Co-authored-by: kangfenmao <kangfenmao@qq.com>
* feat: add Cherry Cloud provider with associated assets and localization support
* feat: add Cherry Cloud provider support with OAuth integration and IPC handling
* fix: add success message for Cherry Cloud API key update
* feat: enhance provider navigation with dynamic ID in URL and update selected provider state
* feat: implement Cherry Cloud server synchronization with token management and error handling
* feat: add CherryCloud provider configuration and token management
* feat: integrate TokenFlux provider support and update related configurations
fix: update redux-persist version to 104
refactor: remove redundant tokenflux provider model assignment in migration
fix: update migration to add TokenFlux provider instead of CherryCloud
* feat: enhance TokenFlux server synchronization with API key authentication support
* feat: update TokenFlux provider assets and add new models
* feat: update migration logic for version 106 to add TokenFlux provider
* feat: disable TokenFlux provider by default in INITIAL_PROVIDERS
* feat: add TokenFlux billing URLs to providerCharge and providerBills functions
* feat: add navigation buttons for webview history in MinApp popup
- Implemented 'Go Back' and 'Go Forward' functionality in the MinApp popup.
- Added corresponding translations for English, Japanese, Russian, and Chinese locales.
- Included icons for navigation buttons to enhance user experience.
* fix: update Russian and Traditional Chinese translations for UI elements
- Revised translations for "rightclick_copyurl", "close", and "minimize" to improve clarity and consistency in the Russian and Traditional Chinese locales.
- Ensured that the translations align better with user expectations and common usage.
* fix: update Russian translations for MinApp popup UI elements
- Revised translations for "close" and "minimize" to specify their context within the MinApp, enhancing clarity for users.
- Ensured consistency with existing translations and improved user understanding of the interface.
---------
Co-authored-by: beyondkmp <beyondkmkp@gmail.com>
- Updated the environment variable initialization to use a consistent type.
- Added logic to set the PATH variable correctly, ensuring it falls back to existing values if necessary.
- Removed unnecessary content accumulation and streamlined chunk processing logic.
- Introduced distinct handling for 'thinking' and 'text' parts, ensuring accurate onChunk calls for both types.
- Enhanced timing tracking for reasoning content, improving overall responsiveness in streaming scenarios.
- Enhanced `isWebSearchModel` to recognize 'grok' as a valid web search model.
- Updated `getOpenAIWebSearchParams` to return specific search parameters for 'grok'.
- Modified `OpenAIProvider` to handle citations from 'grok' in web search results.
- Added 'grok' to the `WebSearchSource` enum for citation formatting.
- Added logic to remove proxy environment variables when the command ends with 'bun'.
- Introduced a new private method `removeProxyEnv` to clean up the environment variables before starting the server.
* fix: enhance backup and restore functionality with skip option
- Updated `restore` and `restoreFromWebdav` methods in `BackupManager` to include a `skipBackupFile` parameter, allowing users to skip restoring the Data directory if desired.
- Modified corresponding IPC calls in `preload` and `BackupService` to support the new parameter.
- Added success message translations in multiple languages for improved user feedback.
* fix: integrate skipBackupFile option in RestorePopup for enhanced restore functionality
* refactor: remove skipBackupFile parameter from restore methods for simplified usage
- Updated `restore` and `restoreFromWebdav` methods in `BackupManager`, `BackupService`, and `NutstoreService` to remove the `skipBackupFile` parameter, streamlining the restore process.
- Adjusted corresponding IPC calls in `preload` and `RestorePopup` to reflect the changes, ensuring consistent functionality across the application.
- Added event listeners for LOCATE_MESSAGE events to scroll to specific messages in the MessageGroup component.
- Introduced a new SelectionBox component to handle multi-select functionality, allowing users to select multiple messages with drag actions.
- Refactored Messages component to remove unused multi-select logic and improve overall structure.
- Cleaned up code by removing commented-out sections and unnecessary state management related to dragging.
* feat: add functionality to insert messages at a specific index in the Redux store
- Introduced a new interface for inserting messages at a specified index.
- Implemented the insertMessageAtIndex reducer to handle message insertion.
- Updated saveMessageAndBlocksToDB to support message insertion logic.
- Modified appendAssistantResponseThunk to utilize the new insertion functionality.
* feat: integrate multi-select mode handling in MessageGroup component
- Added useChatContext hook to access multi-select mode state.
- Updated isGrouped logic to account for multi-select mode, ensuring proper message grouping behavior.
- Enhanced MessageWrapper styles for better layout management in different modes.
---------
Co-authored-by: kangfenmao <kangfenmao@qq.com>
* Fix: Use effective theme for code style in SettingsTab
The SettingsTab component was previously using the theme setting directly from useSettings to determine whether to apply the light or dark code style. This caused an issue when the theme was set to 'auto', as it wouldn't correctly reflect the actual system theme (light or dark).
This commit modifies SettingsTab.tsx to use the `theme` from the `useTheme` hook (which provides the effective theme) for the logic that determines the code editor and preview styles. This ensures that the code style accurately reflects your current effective theme, including when 'auto' theme is selected and the OS theme changes.
* Refactor: Remove unnecessary comments in SettingsTab
This commit removes non-essential comments that were added during a previous refactoring of `SettingsTab.tsx`. The core logic for using the effective theme for code style selection remains unchanged. This change is purely for code cleanliness.
---------
Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
- Integrated Redux dispatch to load topic messages when a message is clicked in HistoryPage.
- Updated SearchResults to utilize message blocks for improved search results, including content extraction.
- Refactored state management to accommodate new content structure in search results.
- Modified the uploadFile method in GeminiService to include baseURL in the parameters.
- Updated the corresponding calls in the preload and renderer layers to pass the baseURL along with the apiKey.
* refactor: improve shiki highlighter utils and reuse it in ShikiStreamService
* refactor: reuse shiki highlighter and markdown-it renderer
* hotfix: exclude GitHub and Copilot models
* fix: update service tier check to exclude GitHub and Copilot models
---------
Co-authored-by: one <wangan.cs@gmail.com>
- Updated NotificationProvider to truncate long messages for better display.
- Modified message sending logic in messageThunk to prevent notifications on the home page, improving user experience.
- Renamed IPC channels for notifications to improve clarity and consistency.
- Updated related handlers in the main process and preload scripts to reflect the new naming convention.
- Enhanced notification service to respect user settings before sending notifications.
- Added a check for user cancellation in the file save dialog, rejecting the promise if canceled.
- Enhanced error handling to reject the promise with a detailed error message instead of returning null.
- Integrated `useAppSelector` in Inputbar to manage multi-selection state.
- Updated Inputbar to conditionally render based on multi-selection mode.
- Modified MessageEditor to display the resend button only for assistant messages, improving UI clarity.
- Replaced the ChatContext with a custom hook `useChatContext` for better modularity and reusability.
- Updated components to utilize the new hook, passing the active topic as an argument.
- Enhanced multi-selection logic and state management for messages, improving user experience in the chat interface.
- Removed the old ChatContext file to streamline the codebase.
- Replaced the div in ContextMenu with a styled component for better styling control.
- Enhanced Message component to handle editing state more cleanly, separating the editor from the message display.
- Adjusted styling for the MessageEditor and FileBlocksContainer for improved layout and responsiveness.
- Removed the electron-notification-state package from dependencies as it is no longer used.
- Updated NotificationService to eliminate Do Not Disturb handling.
- Changed default notification settings in the Redux store to false for assistant messages, backups, and knowledge embedding.
- Replaced singleton pattern with direct instantiation of McpService for cleaner code.
- Updated IPC handlers to use the new mcpService instance directly.
- Removed unnecessary logging in Inputbar and MCPToolsButton components to streamline functionality.
- Cleaned up error handling in McpSettings to improve user experience.
- Updated getServiceTier method to ensure proper handling of undefined OpenAI models.
- Added initialization for OpenAI settings in the migration process to set default values if not present.
- Replaced Ant Design icons with Lucide icons for a more modern look.
- Adjusted ActionButton styling to have a circular border radius.
- Updated translation keys in Chinese locales for better formatting.
- Enhanced event handling in ChatContext to manage multi-select mode more effectively.
- Cleaned up unused imports and props in MessageGroup and MessageSelect components.
* WIP
* feat: integrate notification system using Electron's Notification API
- Replaced the previous notification implementation with Electron's Notification API for better integration.
- Updated notification types and structures to support new features.
- Added translations for notification messages in multiple languages.
- Cleaned up unused dependencies related to notifications.
* refactor: remove unused node-notifier dependency from Electron config
* clean: remove node-notifier from asarUnpack in Electron config
* fix: update notification type in preload script to align with new structure
* feat: Integrate NotificationService for user notifications across various components
- Implemented NotificationService in useUpdateHandler to notify users of available updates.
- Enhanced KnowledgeQueue to send success and error notifications during item processing.
- Updated BackupService to notify users upon successful restoration and backup completion.
- Added error notifications in message handling to improve user feedback on assistant responses.
This update improves user experience by providing timely notifications for important actions and events.
* feat: Refactor notification handling and integrate new notification settings
- Moved SYSTEM_MODELS to a new file for better organization.
- Enhanced notification handling across various components, including BackupService and KnowledgeQueue, to include a source attribute for better context.
- Introduced notification settings in the GeneralSettings component, allowing users to toggle notifications for assistant messages, backups, and knowledge embedding.
- Updated the Redux store to manage notification settings and added migration logic for the new settings structure.
- Improved user feedback by ensuring notifications are sent based on user preferences.
This update enhances the user experience by providing customizable notification options and clearer context for notifications.
* feat: Add 'update' source to NotificationSource type for enhanced notification context
* feat: Integrate electron-notification-state for improved notification handling
- Added electron-notification-state package to manage Do Not Disturb settings.
- Updated NotificationService to respect user DND preferences when sending notifications.
- Adjusted notification settings in various components (BackupService, KnowledgeQueue, useUpdateHandler) to ensure notifications are sent based on user preferences.
- Enhanced user feedback by allowing notifications to be silenced based on DND status.
* feat: Add notification icon to Electron notifications
* fix: import SYSTEM_MODELS in EditModelsPopup for improved model handling
* feat(i18n): add knowledge base notifications in multiple languages
- Added success and error messages for knowledge base operations in English, Japanese, Russian, Chinese (Simplified and Traditional).
- Updated the KnowledgeQueue to utilize the new notification messages for better user feedback.
* feat(notification): introduce NotificationProvider and integrate into App component
- Added NotificationProvider to manage notifications within the application.
- Updated App component to include NotificationProvider, enhancing user feedback through notifications.
- Refactored NotificationQueue to support multiple listeners for notification handling.
- Updated registerHandler to only log and update the handler if it changes, reducing unnecessary operations.
- Removed logging from unregisterHandler for cleaner code.
