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Split the monolithic lit_model.py (1846 lines) into focused, maintainable modules:

  • lit_model.py (539 lines, 71% reduction): Core Lightning orchestration
  • deep_supervision.py (404 lines): Deep supervision and multi-task learning
  • inference.py (868 lines): Sliding window inference, TTA, postprocessing
  • debugging.py (173 lines): NaN detection and debugging utilities

Key improvements:

  • Eliminated code duplication through delegation pattern
  • Clear separation of concerns with single responsibility per module
  • Improved maintainability and testability
  • No backward compatibility methods (clean design per user requirement)

All modules pass Python syntax compilation. Integration tests pending.

Closes #2.1 in REFACTORING_PLAN.md

Split the monolithic lit_model.py (1846 lines) into focused, maintainable modules:
- lit_model.py (539 lines, 71% reduction): Core Lightning orchestration
- deep_supervision.py (404 lines): Deep supervision and multi-task learning
- inference.py (868 lines): Sliding window inference, TTA, postprocessing
- debugging.py (173 lines): NaN detection and debugging utilities

Key improvements:
- Eliminated code duplication through delegation pattern
- Clear separation of concerns with single responsibility per module
- Improved maintainability and testability
- No backward compatibility methods (clean design per user requirement)

All modules pass Python syntax compilation. Integration tests pending.

Closes #2.1 in REFACTORING_PLAN.md
@donglaiw donglaiw merged commit 96e2aca into master Nov 14, 2025
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3 participants