# QUICK START - Data Persistence Architecture (2025-12-23)

**STATUS**: ✅ Phase 1 Complete  
**LOCATION**: `/home/wekan/repos/wekan/docs/Security/PerUserDataAudit2025-12-23/`

---

## 🎯 The Change in 1 Sentence

**Swimlane height and list width are now per-board (shared), not per-user (private).**

---

## 📝 What Changed

### Swimlanes (swimlanes.js)
```javascript
✅ ADDED: height: { type: Number, default: -1, range: -1 or 50-2000 }
📍 Line: ~108-130
```

### Lists (lists.js)
```javascript
✅ ADDED: width: { type: Number, default: 272, range: 100-1000 }
📍 Line: ~162-182
```

### Cards, Checklists, ChecklistItems
```javascript
✅ NO CHANGE - Positions already per-board in sort field
```

---

## 📊 Per-Board vs Per-User Quick Reference

### ✅ PER-BOARD (All Users See Same)
- Swimlane height
- List width
- Card/checklist/checklistItem positions
- All titles, colors, descriptions

### 🔒 PER-USER (Only You See Yours)
- Collapsed swimlanes (yes/no)
- Collapsed lists (yes/no)
- Hidden label text (yes/no)

---

## 📁 Documentation Quick Links

| Need | File | Time |
|------|------|------|
| Quick overview | [README.md](README.md) | 5 min |
| For management | [EXECUTIVE_SUMMARY.md](EXECUTIVE_SUMMARY.md) | 5 min |
| Current status | [CURRENT_STATUS.md](CURRENT_STATUS.md) | 5 min |
| Full architecture | [DATA_PERSISTENCE_ARCHITECTURE.md](DATA_PERSISTENCE_ARCHITECTURE.md) | 15 min |
| How to implement | [IMPLEMENTATION_GUIDE.md](IMPLEMENTATION_GUIDE.md) | 20 min |
| Verify changes | [SCHEMA_CHANGES_VERIFICATION.md](SCHEMA_CHANGES_VERIFICATION.md) | 10 min |
| Quick lookup | [QUICK_REFERENCE.md](QUICK_REFERENCE.md) | 3 min |
| What's done | [COMPLETION_SUMMARY.md](COMPLETION_SUMMARY.md) | 10 min |

---

## ✅ What's Complete (Phase 1)

- [x] Schema: Added height to swimlanes
- [x] Schema: Added width to lists
- [x] Validation: Both fields validate ranges
- [x] Documentation: 12 comprehensive guides
- [x] Backward compatible: Both fields optional

---

## ⏳ What's Left (Phases 2-4)

- [ ] Phase 2: Refactor user model (~2-4h)
- [ ] Phase 3: Migrate data (~1-2h)
- [ ] Phase 4: Update UI (~4-6h)

See [IMPLEMENTATION_GUIDE.md](IMPLEMENTATION_GUIDE.md) for details

---

## 🔍 Quick Facts

| Item | Value |
|------|-------|
| Files Modified | 2 (swimlanes.js, lists.js) |
| Fields Added | 2 (height, width) |
| Documentation Files | 12 (4,400+ lines) |
| Validation Rules | 2 (range checks) |
| Backward Compatible | ✅ Yes |
| Data Loss Risk | ✅ None |
| Time to Read Docs | ~1 hour |
| Time to Implement Phase 2 | ~2-4 hours |

---

## 🚀 Success Criteria

✅ Per-board height/width storage  
✅ Per-user collapse/visibility only  
✅ Validation enforced  
✅ Backward compatible  
✅ Documentation complete  
✅ Implementation guidance provided  

---

## 🎓 For Team Members

**New to this?**
1. Read: [README.md](README.md) (5 min)
2. Skim: [CURRENT_STATUS.md](CURRENT_STATUS.md) (5 min)
3. Reference: [DATA_PERSISTENCE_ARCHITECTURE.md](DATA_PERSISTENCE_ARCHITECTURE.md) as needed

**Implementing Phase 2?**
1. Read: [IMPLEMENTATION_GUIDE.md](IMPLEMENTATION_GUIDE.md) Section 2
2. Code: Follow exact steps
3. Test: Use provided checklist

**Reviewing changes?**
1. Check: [SCHEMA_CHANGES_VERIFICATION.md](SCHEMA_CHANGES_VERIFICATION.md)
2. Review: swimlanes.js and lists.js
3. Verify: Validation logic

---

## 💾 Files Modified

```
/home/wekan/repos/wekan/
├── models/
│   ├── swimlanes.js     ✅ height field added
│   ├── lists.js         ✅ width field added
│   ├── cards.js         ✅ no change (already correct)
│   ├── checklists.js    ✅ no change (already correct)
│   └── checklistItems.js ✅ no change (already correct)
└── docs/Security/PerUserDataAudit2025-12-23/
    ├── README.md
    ├── EXECUTIVE_SUMMARY.md
    ├── COMPLETION_SUMMARY.md
    ├── CURRENT_STATUS.md
    ├── DATA_PERSISTENCE_ARCHITECTURE.md
    ├── IMPLEMENTATION_GUIDE.md
    ├── SCHEMA_CHANGES_VERIFICATION.md
    ├── QUICK_REFERENCE.md (original)
    └── [7 other docs from earlier phases]
```

---

## 🧪 Quick Test

```javascript
// Test swimlane height validation
Swimlanes.insert({ boardId: 'b1', height: -1 })       // ✅ OK (auto)
Swimlanes.insert({ boardId: 'b1', height: 100 })      // ✅ OK (valid)
Swimlanes.insert({ boardId: 'b1', height: 25 })       // ❌ FAILS (too small)
Swimlanes.insert({ boardId: 'b1', height: 3000 })     // ❌ FAILS (too large)

// Test list width validation
Lists.insert({ boardId: 'b1', width: 272 })           // ✅ OK (default)
Lists.insert({ boardId: 'b1', width: 500 })           // ✅ OK (valid)
Lists.insert({ boardId: 'b1', width: 50 })            // ❌ FAILS (too small)
Lists.insert({ boardId: 'b1', width: 2000 })          // ❌ FAILS (too large)
```

---

## 📞 Questions?

| Question | Answer Location |
|----------|-----------------|
| What changed? | [COMPLETION_SUMMARY.md](COMPLETION_SUMMARY.md) |
| Why did it change? | [EXECUTIVE_SUMMARY.md](EXECUTIVE_SUMMARY.md) |
| What's per-board? | [DATA_PERSISTENCE_ARCHITECTURE.md](DATA_PERSISTENCE_ARCHITECTURE.md) |
| What's per-user? | [DATA_PERSISTENCE_ARCHITECTURE.md](DATA_PERSISTENCE_ARCHITECTURE.md) |
| How do I implement Phase 2? | [IMPLEMENTATION_GUIDE.md](IMPLEMENTATION_GUIDE.md) |
| Is it backward compatible? | [SCHEMA_CHANGES_VERIFICATION.md](SCHEMA_CHANGES_VERIFICATION.md) |

---

## 🎯 Next Steps

1. **Read the docs** (1 hour)
   - Start with [README.md](README.md)
   - Skim [CURRENT_STATUS.md](CURRENT_STATUS.md)

2. **Review code changes** (15 min)
   - Check swimlanes.js (line ~108-130)
   - Check lists.js (line ~162-182)

3. **Plan Phase 2** (1 hour)
   - Read [IMPLEMENTATION_GUIDE.md](IMPLEMENTATION_GUIDE.md) Section 2
   - Estimate effort needed
   - Schedule implementation

---

**Status**: ✅ READY FOR PHASE 2