Review the current accompy architecture against the design docs.

1. Read `misc/docs/docs_guide.md` for an overview of all documentation
2. Read `misc/docs/architecture_v0.2.0.md` for the target architecture
3. Read `misc/docs/dev_plan_2026_01_05.md` for the refactoring plan
4. Read `misc/docs/pipeline_architecture.md` for the converter pipeline design

Then examine the current source code and report:
- Which parts of the refactoring plan are complete vs. still pending
- Any architectural drift (code that doesn't match the design docs)
- Concrete next steps with file paths and line numbers
