- Changed the default language in `index.html` from Russian to English, updating the title and button aria-labels for improved accessibility.
- Refactored the `buildFetchOptions` function in `api.js` to include an optional external abort signal, enhancing request management.
- Updated `fetchDuties` and `fetchCalendarEvents` to support request cancellation using the new abort signal, improving error handling.
- Added unit tests for the API functions to ensure proper functionality, including handling of 403 errors and request cancellations.
- Enhanced CSS styles for duty markers to improve visual consistency.
- Removed unused code and improved the overall structure of the JavaScript files for better maintainability.
- Updated the loading indicator in `index.html` to include a spinner and text for better user feedback during loading.
- Added CSS transitions for smoother visual effects on various elements, including buttons and overlays, enhancing overall user experience.
- Refactored JavaScript functions to utilize requestAnimationFrame for improved animation performance when showing and hiding panels.
- Implemented smooth scrolling behavior for duty list navigation, improving usability when focusing on current duties.
- Added functionality to lock the background scroll when the day detail panel is open, improving user interaction by preventing background movement.
- Implemented logic to restore the scroll position when the panel is closed, ensuring a seamless user experience.
- Updated CSS to support the new behavior, enhancing the visual consistency of the day detail panel.
- Added early return checks in navigation button event listeners to prevent actions while the day detail panel is open, improving performance and usability.
- Introduced a new `dayDetail.js` module to manage the day detail panel functionality, allowing users to view detailed information about duties and events for each calendar day.
- Enhanced the calendar rendering in `calendar.js` to include visual indicators for duties and events, improving user interaction and experience.
- Updated CSS in `style.css` to style the day detail panel and its components, ensuring a responsive design for both desktop and mobile views.
- Refactored `hints.js` to export the `getDutyMarkerRows` function, facilitating better integration with the new day detail features.
- Added localization support for the day detail panel in `i18n.js`, including new translations for close button and event titles.
- Enhanced the initialization process in `main.js` to set up the day detail panel on application load.
- Introduced a new `i18n.js` module for handling translations and language detection, supporting both Russian and English.
- Updated various components to utilize the new translation functions, enhancing user experience by providing localized messages for errors, hints, and UI elements.
- Refactored existing code in `api.js`, `calendar.js`, `dutyList.js`, `hints.js`, and `ui.js` to replace hardcoded strings with translated messages, improving maintainability and accessibility.
- Enhanced the initialization process in `main.js` to set the document language and update UI elements based on the user's language preference.
- Updated CSS for `.day` and `.access-denied` to improve layout and visual consistency.
- Introduced a new function `dutyOverlapsLocalRange` in `dateUtils.js` to check duty overlaps within a specified date range.
- Refactored `dutyItemHtml` in `dutyList.js` to utilize `formatTimeLocal` for time formatting, enhancing readability.
- Added utility functions in `hints.js` for parsing duty marker data and building time prefixes, streamlining hint rendering logic.
- Improved the `showAccessDenied` function in `ui.js` to display detailed server messages when access is denied.
- Deleted the `app.js` file and migrated its functionality to a modular structure with multiple JavaScript files for better organization and maintainability.
- Updated `index.html` to reference the new `main.js` module, ensuring proper loading of the application.
- Introduced new utility modules for API requests, authentication, calendar handling, and DOM manipulation to enhance code clarity and separation of concerns.
- Enhanced CSS styles for improved layout and theming consistency across the application.
- Added comprehensive comments and documentation to new modules to facilitate future development and understanding.
