Tasks completed: 3/3 - Task 1: Create SortOrderProvider unit tests (22 tests) - Task 2: Create persistence integration tests (12 tests) - Task 3: Verify full test suite passes (no regressions) SUMMARY: .planning/phases/01-semantic-position-model/01-02-SUMMARY.md Phase 1 complete: 2/2 plans
Tasks completed: 2/2 - Create SortOrderProvider utility - Add day derivation methods to Trip SUMMARY: .planning/phases/01-semantic-position-model/01-01-SUMMARY.md
Phases: 1. Semantic Position Model: DATA-*, PERS-* (foundation) 2. Constraint Validation: CONS-* (rules engine) 3. Visual Flattening: FLAT-* (display bridge) 4. Drag Interaction: DRAG-* (UI layer) All 23 v1 requirements mapped to phases.