- Introduce a two-level directory structure for file paths (`xx/yy/hash`) in `pkg5_import.rs` for improved scalability, with fallback to the old structure for compatibility.
- Remove outdated end-to-end tests for `pkg5` imports, reducing redundancy and streamlining test coverage.
- Eliminate redundant `test_manifest_parsing.rs` as its functionality is covered during `FileBackend` implementation.
- Define `PackageContentVectors` for streamlined data organization.
- Enhance manifest handling in `FileBackend` with recursive search, improved content extraction, and robust error handling.
- Simplify and centralize manifest parsing logic for maintainability and code clarity.
- Standardize formatting by aligning and cleaning up indentation, spacing, and line breaks across multiple modules.
- Enhance logging with improved message formatting for better context and readability.
- Simplify error handling in `pkg6dev`, `pkg6repo`, and core libraries by consolidating redundant patterns and improving clarity.
- Update test cases to reflect formatting and logging changes while extending coverage of edge cases.
- Perform general cleanup, including removing unused imports, refining comments, and ensuring consistent style.
- Extract manifest path construction and recursive manifest search into helper methods (`construct_manifest_path` and `find_manifests_recursive`).
- Enhance package information extraction by separating stem and version details from FMRI.
- Adjust directory creation logic to include per-package subdirectories for better organization.
- Simplify and centralize manifest parsing logic, improving error handling and maintainability.
- Modify `rebuild` and `refresh` methods to take `&self` instead of `&mut self`.
- Replace mutable repository instances in `pkg6dev`, `pkg6repo`, and core library with immutable ones.
- Introduce `debug` logging for enhanced traceability during metadata rebuild and refresh.
- Extract and simplify catalog rebuild logic into a dedicated `rebuild_catalog` method.
- General cleanup: remove redundant methods, reorganize logic, and refine comments across affected files.
- Update `FileBackend` to store files in a multi-level directory structure (`xx/yy/hash`) based on hash prefixes.
- Adjust method signatures and logic across `FileBackend`, `pkg6dev`, and `pkg6repo` to support mutable repository operations.
- Add test cases and scripts (`test_file_structure.rs`, `test_repo_operations.sh`) to validate the new file structure.
- Refactor catalog manager to use `RefCell` for interior mutability to enable lazy initialization.
- Clean up redundant and dead code, enhance comments, and replace outdated logic for file handling and metadata operations.
- Implement parsing and mapping of new action types: `User`, `Group`, `Driver`, `Legacy`, and `Transform` within `Manifest`.
- Introduce comprehensive test coverage for the newly supported actions, including edge cases for `ftpuser` property in manifests.
- Refactor to leverage `HashSet` for user `services` to avoid duplicates.
- Improve comments and error handling during action parsing for enhanced clarity and robustness.
- Centralize package metadata in workspace for consistency.
- Upgrade `pkg6dev` and `pkg6repo` to version `0.5.1`, aligning with new workspace configuration.
- Introduce `EnvFilter` for dynamic logging configuration, defaulting to debug level.
- Add `LoggingEnvError` variant to `Pkg6DevError` with structured diagnostics for improved error handling.
