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docs(01-01): complete SortOrderProvider and Trip day derivation plan

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Tasks completed: 2/2
- Create SortOrderProvider utility
- Add day derivation methods to Trip

SUMMARY: .planning/phases/01-semantic-position-model/01-01-SUMMARY.md
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Trey t
2026-01-18 13:52:34 -06:00
parent a7d0e7f049
commit eb182c938b
2 changed files with 114 additions and 12 deletions
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31
.planning/STATE.md
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@@ -4,17 +4,18 @@
**Core Value:** Drag-and-drop that operates on semantic positions (day + sortOrder), not row indices - so user intent is preserved across data reloads.
**Current Focus:** Beginning Phase 1 - Semantic Position Model
**Current Focus:** Phase 1 - Semantic Position Model (Plan 01 complete)
## Current Position
**Phase:** 1 - Semantic Position Model
**Plan:** Not yet created
**Status:** Awaiting plan creation
**Phase:** 1 of 4 (Semantic Position Model)
**Plan:** 1 of 2 complete
**Status:** In progress
**Last activity:** 2026-01-18 - Completed 01-01-PLAN.md
```
Progress: [----------] 0%
Phase 1: [----------] Not Started
Progress: [#---------] 12.5%
Phase 1: [#####-----] 50% (1/2 plans)
Phase 2: [----------] Not Started
Phase 3: [----------] Not Started
Phase 4: [----------] Not Started
@@ -25,9 +26,9 @@ Phase 4: [----------] Not Started
| Metric | Value |
|--------|-------|
| Total Requirements | 23 |
| Completed | 0 |
| Completed | 3 |
| Current Phase | 1 |
| Plans Executed | 0 |
| Plans Executed | 1 |
## Accumulated Context
@@ -39,16 +40,21 @@ Phase 4: [----------] Not Started
| (day, sortOrder) position model | Row indices break on reload; semantic position is stable | Pre-planning |
| Insertion lines (not zones) | User wants precise feedback on exact drop location | Pre-planning |
| Invalid drops rejected (snap back) | Cleaner than auto-clamping; user knows what happened | Pre-planning |
| Games get sortOrder from 100 + minutes since midnight | Range 100-1540 leaves room for negative sortOrder items | 01-01 |
| Normalization threshold at 1e-10 | Standard floating-point comparison for precision exhaustion | 01-01 |
| Day 1 = trip.startDate | 1-indexed, games belong to their start date | 01-01 |
### Learned
- Previous attempts failed due to row-based thinking instead of semantic positioning
- Travel was incorrectly treated as structural ("travelBefore") instead of positional
- Hard-coded flatten order ignoring sortOrder caused reload issues
- SortOrderProvider provides static methods for all sortOrder calculations
- Trip extension provides instance methods for day number derivation
### TODOs
None yet - awaiting Phase 1 planning.
- [ ] Create tests for semantic position persistence (Plan 01-02)
### Blockers
@@ -56,12 +62,13 @@ None currently.
## Session Continuity
**Last Session:** Project initialized, roadmap created
**Next Action:** Create plan for Phase 1
**Last Session:** 2026-01-18T19:52:00Z
**Stopped at:** Completed 01-01-PLAN.md
**Resume file:** .planning/phases/01-semantic-position-model/01-02-PLAN.md
### Context for Next Session
Starting fresh. Phase 1 establishes the semantic position model that everything else depends on. Requirements DATA-01 through DATA-05 define the model structure, PERS-01 through PERS-03 define persistence behavior. The key insight from research: row indices are lies, semantic positions are truth.
Plan 01-01 complete. SortOrderProvider utility created with 6 static methods. Trip extended with dayNumber(for:) and date(forDay:). Next: Plan 01-02 creates tests verifying semantic position persistence.
---
*State initialized: 2026-01-18*