db0c748e22
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
84 lines
3.0 KiB
Markdown
84 lines
3.0 KiB
Markdown
# Project State: Itinerary Editor
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## Project Reference
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**Core Value:** Drag-and-drop that operates on semantic positions (day + sortOrder), not row indices - so user intent is preserved across data reloads.
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**Current Focus:** Phase 1 Complete - Ready for Phase 2 (Constraint Validation)
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## Current Position
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**Phase:** 1 of 4 (Semantic Position Model) - COMPLETE
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**Plan:** 2 of 2 complete
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**Status:** Phase complete
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**Last activity:** 2026-01-18 - Completed 01-02-PLAN.md
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```
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Progress: [##--------] 25%
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Phase 1: [##########] 100% (2/2 plans) COMPLETE
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Phase 2: [----------] Not Started
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Phase 3: [----------] Not Started
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Phase 4: [----------] Not Started
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```
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## Performance Metrics
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| Metric | Value |
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|--------|-------|
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| Total Requirements | 23 |
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| Completed | 8 |
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| Current Phase | 1 (complete) |
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| Plans Executed | 2 |
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## Accumulated Context
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### Key Decisions
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| Decision | Rationale | Phase |
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|----------|-----------|-------|
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| UITableView over SwiftUI List | SwiftUI drag-drop lacks insertion line precision | Pre-planning |
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| (day, sortOrder) position model | Row indices break on reload; semantic position is stable | Pre-planning |
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| Insertion lines (not zones) | User wants precise feedback on exact drop location | Pre-planning |
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| Invalid drops rejected (snap back) | Cleaner than auto-clamping; user knows what happened | Pre-planning |
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| Games get sortOrder from 100 + minutes since midnight | Range 100-1540 leaves room for negative sortOrder items | 01-01 |
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| Normalization threshold at 1e-10 | Standard floating-point comparison for precision exhaustion | 01-01 |
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| Day 1 = trip.startDate | 1-indexed, games belong to their start date | 01-01 |
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| Swift Testing (@Test) over XCTest | Matches existing project test patterns | 01-02 |
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| LocalItineraryItem conversion for testing | Avoids #Predicate macro issues with local captures | 01-02 |
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### Learned
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- Previous attempts failed due to row-based thinking instead of semantic positioning
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- Travel was incorrectly treated as structural ("travelBefore") instead of positional
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- Hard-coded flatten order ignoring sortOrder caused reload issues
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- SortOrderProvider provides static methods for all sortOrder calculations
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- Trip extension provides instance methods for day number derivation
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- 50 midpoint insertions maintain distinct sortOrder values before precision loss
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### TODOs
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- [x] Create tests for semantic position persistence (Plan 01-02) - COMPLETE
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### Blockers
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None currently.
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## Session Continuity
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**Last Session:** 2026-01-18T20:11:09Z
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**Stopped at:** Completed 01-02-PLAN.md (Phase 1 complete)
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**Resume file:** .planning/phases/02-constraint-validation/02-01-PLAN.md
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### Context for Next Session
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Phase 1 complete with 34 tests covering:
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- SortOrderProvider: all 6 methods tested (22 tests)
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- Position persistence: encode/decode, SwiftData conversion (12 tests)
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- Requirements DATA-01 through DATA-05 and PERS-01 through PERS-03 verified
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Ready to start Phase 2: Constraint Validation (drop rules, game immutability, valid drop targets).
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---
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*State initialized: 2026-01-18*
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*Last updated: 2026-01-18*
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