- Introduced a new `trusted_groups` table to store groups authorized to receive duty information.
- Implemented functions to add, remove, and check trusted groups in the database.
- Enhanced command handlers to manage trusted groups, including `/trust_group` and `/untrust_group` commands for admin users.
- Updated internationalization messages to support new commands and group status notifications.
- Added unit tests for trusted groups repository functions to ensure correct behavior and data integrity.
- Added a TTLCache class for in-memory caching of duty-related data, improving performance by reducing database queries.
- Integrated caching into the group duty pin functionality, allowing for efficient retrieval of message text and next shift end times.
- Introduced new methods to invalidate caches when relevant data changes, ensuring data consistency.
- Created a new Alembic migration to add indexes on the duties table for improved query performance.
- Updated tests to cover the new caching behavior and ensure proper functionality.
- Introduced a new roles table in the database to manage user roles ('user' and 'admin') for access control.
- Updated the user model to include a foreign key reference to the roles table, allowing for role assignment.
- Enhanced command handlers to support the `/set_role` command for admins to assign roles to users.
- Refactored access control logic to utilize role checks instead of username/phone allowlists, improving security and maintainability.
- Updated documentation to reflect changes in access control mechanisms and role management.
- Added unit tests to ensure correct functionality of role assignment and access checks.
- Introduced a new `normalize_lang` function to standardize language codes across the application, ensuring consistent handling of user language preferences.
- Refactored date handling utilities by adding `parse_utc_iso` and `parse_utc_iso_naive` functions for better parsing of ISO 8601 date strings, enhancing timezone awareness.
- Updated various modules to utilize the new language normalization and date parsing functions, improving code clarity and maintainability.
- Enhanced error handling in date validation to raise specific `DateRangeValidationError` exceptions, providing clearer feedback on validation issues.
- Improved test coverage for date range validation and language normalization functionalities, ensuring robustness and reliability.
- Added support for filtering calendar events by type in the ICS generation API endpoint, allowing users to specify whether to include only duty shifts or all event types (duty, unavailable, vacation).
- Updated the `get_duties_for_user` function to accept an optional `event_types` parameter, enabling more flexible data retrieval based on user preferences.
- Enhanced unit tests to cover the new event type filtering functionality, ensuring correct behavior and reliability of the ICS generation process.
- Refactored the configuration loading in `config.py` to utilize a single source of truth through the `Settings` class, improving maintainability and clarity.
- Introduced the `is_admin_for_telegram_user` function in `repository.py` to centralize admin checks based on usernames and phone numbers.
- Updated command handlers to use the new admin check function, ensuring consistent access control across the application.
- Enhanced error handling in the `error_handler` to log exceptions when sending error replies to users, improving debugging capabilities.
- Improved the handling of user phone updates in `repository.py` to ensure proper normalization and validation of phone numbers.
- Created a new `CHANGELOG.md` file to document all notable changes to the project, adhering to the Keep a Changelog format.
- Updated `CONTRIBUTING.md` to include instructions for building and previewing documentation using MkDocs.
- Added `mkdocs.yml` configuration for documentation generation, including navigation structure and theme settings.
- Enhanced various documentation files, including API reference, architecture overview, configuration reference, and runbook, to provide comprehensive guidance for users and developers.
- Included new sections in the README for changelog and documentation links, improving accessibility to project information.
- Introduced a new boolean column `name_manually_edited` in the `users` table to control whether user names are overwritten during synchronization with Telegram.
- Updated the `get_or_create_user` function to respect the `name_manually_edited` flag, ensuring names are only updated when the flag is false.
- Implemented a new function `update_user_display_name` to allow manual updates of user names while setting the `name_manually_edited` flag to true.
- Enhanced unit tests to cover the new functionality and ensure correct behavior of name handling based on the `name_manually_edited` flag.
- Introduced a new database model for calendar subscription tokens, allowing users to generate unique tokens for accessing their personal calendar.
- Implemented API endpoint to return ICS files containing only the subscribing user's duties, enhancing user experience with personalized calendar access.
- Added utility functions for generating ICS files from user duties, ensuring proper formatting and timezone handling.
- Updated command handlers to support the new calendar link feature, providing users with easy access to their personal calendar subscriptions.
- Included unit tests for the new functionality, ensuring reliability and correctness of token generation and ICS file creation.
- Added functionality to normalize phone numbers for comparison, ensuring only digits are stored and checked.
- Updated configuration to include optional phone number allowlists for users and admins in the environment settings.
- Enhanced authentication logic to allow access based on normalized phone numbers, in addition to usernames.
- Introduced new helper functions for parsing and validating phone numbers, improving code organization and maintainability.
- Added unit tests to validate phone normalization and access control based on phone numbers.
- Updated `.dockerignore` to exclude test and development artifacts, optimizing the Docker image size.
- Refactored `main.py` to delegate execution to `duty_teller.run.main()`, simplifying the entry point.
- Introduced a new `duty_teller` package to encapsulate core functionality, improving modularity and organization.
- Enhanced `pyproject.toml` to define a script for running the application, streamlining the execution process.
- Updated README documentation to reflect changes in project structure and usage instructions.
- Improved Alembic environment configuration to utilize the new package structure for database migrations.
