- Introduced `invoice_period_flag_schema_bootstrap` to initialize the schema for invoice period flags.
- Added `invoice_period_flag_service` to handle manual and automatic flag creation, updates, filtering, and context resolution.
- Implemented lifecycle methods such as `createManualFlag`, `updateAutomaticFlagStatus`, and `applyFlagsToPeriodTypes` for handling invoice period flags and their usage in processing periods.
- Included context-specific resolution methods for efficient flag management in invoicing workflows.
- Improved null safety by updating product ID retrieval logic in parsers and usage logs.
- Enhanced primary wash item selection with stricter checks for valid product types.
- Adjusted import date modifier in `importUsageLogs` for extended range (`-7 day`).
- Streamlined product and user association in order creation with additional validations.
- Removed redundant checks and refined permission handling in import tasks.
- Introduced `runImportTasks` method for vehicle, user, and usage log imports.
- Added new product parsers: `ht_b_rstel_s`, `ht_turbo`, and `ikke_b_rster_p_kabinen`.
- Implemented simulation and duplicate detection for usage logs via order objects.
- Updated usage log handling to include default customer checks and user association.
- Enhanced request handling with fast-link functionality for usage orders.