- Introduce `#[serde(skip_serializing_if = "is_empty", default)]` for various optional fields to streamline serialization and ensure defaults are applied during deserialization.
- Add `tracing::debug` logging for enhanced error context in JSON deserialization fallback logic.
- Update tests to reflect changes in manifest parsing, including new cases for the updated JSON format.
- 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.
