- Added a new `foreign_key_mappings` method to the Syncable trait, allowing models to declare their foreign key relationships for automatic UUID conversion during synchronization.
- Implemented the `to_sync_json` method to utilize the new FK mappings, enabling seamless conversion of local integer IDs to UUIDs before syncing.
- Updated the entry and location models to include foreign key mappings, enhancing their synchronization capabilities.
- Enhanced the `apply_state_change` method to leverage the generic mapping logic, simplifying the implementation for models with foreign keys.
- Introduced comprehensive documentation on the new FK mapping system and its usage across models.
- Added `sync_depends_on` method to the Syncable trait, allowing models to declare their dependencies for synchronization.
- Updated device, location, entry, and tag models to specify their dependencies, facilitating automatic computation of sync order.
- Enhanced backfill process to respect model dependencies, preventing foreign key violations during synchronization.
- Improved documentation to reflect the new dependency graph and its benefits for model synchronization.
- Added `apply_state_change` method to the `location` model for idempotent state-based replication, allowing device-owned data to be synchronized without conflicts.
- Introduced `apply_shared_change` method in the `tag` model to handle shared resources with union merge conflict resolution, preserving tags with the same name in different contexts.
- Enhanced documentation to clarify the synchronization strategies for device-owned and shared models, including error handling and usage examples.
- Updated tests to validate the new functionality and ensure correct behavior during synchronization processes.
- Added a comprehensive checklist for removing leader-related code in the transition to a leaderless hybrid sync model.
- Documented necessary changes across core infrastructure, service layer, library management, and network protocols to facilitate the removal of leadership components.
- Updated sync documentation to reflect the new architecture, emphasizing the leaderless approach and its implications for device synchronization.
- Included migration strategies and terminology updates to ensure clarity in the transition process.
- Updated the library sync system to utilize a leaderless hybrid model, enhancing real-time synchronization of shared resources.
- Implemented state-based sync for device-owned data and log-based sync with Hybrid Logical Clocks (HLC) for shared resources.
- Revised documentation to reflect architectural changes, including the removal of leader election and the introduction of per-device sync logs.
- Enhanced conflict resolution strategies using HLC for shared metadata, ensuring deterministic merging and consistency across devices.
- Updated implementation tasks and acceptance criteria for various components to align with the new architecture.
- Introduced a comprehensive sync infrastructure, including a `Syncable` trait for models, enabling automatic logging of changes in a dedicated sync log database.
- Added `LeadershipManager` for managing leader election and lease tracking, ensuring reliable synchronization across devices.
- Implemented `TransactionManager` to handle atomic writes and sync logging, enhancing data integrity during state changes.
- Created a new `sync` module with necessary components such as `SyncLogDb`, `SyncLogEntry`, and sync protocol handlers for efficient communication between leader and follower devices.
- Developed integration tests to validate the sync functionality and ensure robust performance across various scenarios.
