# Ziwei 命盤 Implementation Progress Report
**Date**: 2026-02-21
**Status**: Phase 1 Complete (STEPS 1-5), Phase 2 In Progress (STEPS 6-8)

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## ✅ Phase 1: COMPLETE - Core Algorithm (STEPS 1-5)

### Frontend UI (100% Complete)
- ✅ **TypeScript Types** - `types/ziwei.ts`
  - NatalChart, PalaceState, StarMeta, ChartLayer definitions
  - Enum types for HuaType, StarMagnitudeLevel

- ✅ **Components** - Dark mode analytics dashboard
  - `PalaceCard.tsx` - Individual palace display with stars & metrics
  - `ZiWeiGrid.tsx` - 4×4 grid with 12 palaces + central info strip
  - `NatalChartView.tsx` - Main chart viewer with tabs
  - `GenerationPanel.tsx` - Chart generation form + history

- ✅ **Configuration & Demo**
  - `config/starVisualConfig.ts` - 10 star examples with visual rules
  - `config/demoNatalLayer.ts` - Demo chart with 12 palaces

- ✅ **Styling**
  - `styles/ziwei-theme.css` - Complete dark mode dashboard theme
  - Magnitude colors, Hua badges, star categories, smooth transitions

### Backend Algorithm (100% Complete)
- ✅ **STEP 1**: Calculate life palace (命宮)
  - Formula: `(month - hour + 10) % 12`
  - Verified: All 5 test cases ✓

- ✅ **STEP 2**: Calculate life palace stem via Five Tiger Escaping (五虎遁)
  - Complete mapping table
  - Verified: All 5 test cases ✓

- ✅ **STEP 3**: Create stem-branch pair (命宮干支)
  - Simple combination of stem + branch
  - Verified: All 5 test cases ✓

- ✅ **STEP 4**: Calculate five element bureau (五行局) via Nayin
  - Complete Nayin mapping for all 60-year cycle
  - Maps to bureaus: 2=水, 3=木, 4=金, 5=土, 6=火
  - Verified: All 5 test cases ✓

- ✅ **STEP 4.5**: Calculate all 12 palace stems & branches (COUNTERCLOCKWISE)
  - **CRITICAL**: COUNTERCLOCKWISE (逆時針) arrangement
  - Formula: `palaceBranchIndex = (lifeHouseIndex - i) % 12`
  - Verified: All 5 test cases ✓

- ✅ **STEP 5**: Place Ziwei & Tianfu stars (奇偶論斷法)
  - Odd/Even Difference Method implementation
  - Fixed Tianfu mnemonic mapping (NOT opposite)
  - Verified: All 5 test cases ✓
    - Bennett: Ziwei 亥, Tianfu 巳 ✓
    - Brian: Ziwei 酉, Tianfu 未 ✓
    - Christy: Ziwei 亥, Tianfu 巳 ✓
    - Cherry: Ziwei 丑, Tianfu 卯 ✓
    - Elice: Ziwei 未, Tianfu 酉 ✓

### Build & Deployment (100% Complete)
- ✅ Frontend builds successfully: `npm run build` ✓
- ✅ Python algorithm tested: `python3 services/ziwei-chart-calculator.py` ✓
- ✅ All commits pushed to `claude/ziwei-backend-system-NELVG` ✓

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## 🔄 Phase 2: IN PROGRESS - Star Placement (STEPS 6-8)

### STEP 6: Place 14 Major Stars (木火土金水 星)
**Status**: To Be Implemented

The 14 major stars are placed based on the Ziwei position and specific rules:

**主星 (Primary Stars - 12)**:
1. 紫微 (Ziwei) - Already placed in STEP 5 ✓
2. 天府 (Tianfu) - Already placed in STEP 5 ✓
3. 太陽 (Taiyang) - Sun star
4. 武曲 (Wuqu) - Mars star
5. 天同 (Tianong) - Jupiter star
6. 廉貞 (Lianzhen) - Venus star
7. 天機 (Tianjie) - Mercury star
8. 巨門 (Jumen) - Saturn/Rahu star
9. 天梁 (Tianliang) - Solar Yin star
10. 七殺 (Qisha) - Seven Kills
11. 破軍 (Pojun) - Destroyer
12. 貪狼 (Tanlang) - Greedy Wolf

**輔星 (Auxiliary Stars - 2)**:
13. 左輔 (Zuo Fu) - Left Assistant
14. 右弼 (You Bi) - Right Assistant

### STEP 7: Place Auxiliary & Calamity Stars
**Status**: To Be Implemented

- 文昌/文曲 (Wen Chang/Wen Qu) - Literary stars
- 祿存/天馬 (Lu Cun/Tian Ma) - Fortune stars
- 擎羊/陀羅 (Qing Yang/Tuo Luo) - Thorns/Obstacles
- 火星/鈴星 (Huo Xing/Ling Xing) - Fire/Bell stars
- 化祿/化權/化科/化忌 (Four Transformations) - See STEP 8

### STEP 8: Calculate Four Transformations (本命四化)
**Status**: To Be Implemented

- **化祿** (Lu Hua) - Prosperity transformation
- **化權** (Quan Hua) - Power transformation
- **化科** (Ke Hua) - Talent/Luck transformation
- **化忌** (Ji Hua) - Challenge transformation

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## 📋 Next Immediate Steps

### 1. Implement STEP 6 (14 Major Stars Placement)
**Timeline**: Next phase
- Create star placement rules based on Ziwei position
- Implement lookup tables for each major star's palace position
- Test against historical records/reference books

### 2. Implement STEP 7 (Auxiliary Stars)
**Timeline**: Following STEP 6
- Place literary, fortune, obstacle, and elemental stars
- Implement four transformations foundation

### 3. Implement STEP 8 (Four Transformations)
**Timeline**: Following STEP 7
- Calculate which Ziwei star transforms to 祿
- Calculate which star transforms to 權, 科, 忌
- Propagate transformations through all major stars

### 4. Backend API Integration
**Timeline**: After STEP 8 complete
- Create Express.js endpoints: `/api/ziwei/calculate-chart`
- Connect Python calculator to API
- Add database layer for storing charts

### 5. Frontend Integration
**Timeline**: After API complete
- Connect GenerationPanel form to backend
- Display calculated results in NatalChartView
- Add chart history/library functionality

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## 📊 Testing Strategy

### Unit Tests
- Each STEP tested against 5 verified test cases
- STEP 1-5: 100% passing ✓
- STEP 6-8: Pending implementation

### Integration Tests
- Full chart calculation with all steps
- Compare against authoritative sources

### Reference Sources
1. [星林 學苑 - 起盤立十二宮](https://www.108s.tw/article/info/88)
2. [iztro JavaScript Library](https://github.com/SylarLong/iztro)
3. Knowledge base documentation: `/knowledge/schema/ZIWEI_ALGORITHM.md`

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## 🏗️ Architecture

```
┌─ Frontend (React + TypeScript)
│  ├─ Generation Tab: Chart form + history
│  ├─ Analysis Tab: 12-palace chart display
│  └─ Components: PalaceCard, ZiWeiGrid, NatalChartView
│
├─ Backend API (Express.js)
│  ├─ POST /api/ziwei/calculate-chart
│  ├─ GET /api/ziwei/charts
│  └─ GET /api/ziwei/charts/:id
│
└─ Python Calculator (services/ziwei-chart-calculator.py)
   ├─ STEP 1: Life Palace
   ├─ STEP 2: Life Palace Stem (五虎遁)
   ├─ STEP 3: Stem-Branch Pair
   ├─ STEP 4: Five Element Bureau (Nayin)
   ├─ STEP 4.5: All 12 Palaces (Counterclockwise)
   ├─ STEP 5: Ziwei & Tianfu (Odd/Even Method)
   ├─ STEP 6: 14 Major Stars [IN PROGRESS]
   ├─ STEP 7: Auxiliary Stars [PENDING]
   └─ STEP 8: Four Transformations [PENDING]
```

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## 📌 Key Technical Decisions

1. **COUNTERCLOCKWISE Arrangement**: Critical fix - all 12 palaces go BACKWARD through branches, not clockwise
2. **Odd/Even Difference Method**: For Ziwei & Tianfu placement (NOT simple remainder method)
3. **Fixed Tianfu Mapping**: Uses mnemonic, NOT opposite to Ziwei
4. **Nayin System**: For bureau determination, not direct stem mapping
5. **Python Backend**: Clean, testable implementation separate from Node.js

---

## 📝 Files Created/Modified

### Frontend
- `frontend/types/ziwei.ts` - Type definitions
- `frontend/config/starVisualConfig.ts` - Star configuration
- `frontend/config/demoNatalLayer.ts` - Demo data
- `frontend/components/PalaceCard.tsx` - Palace component
- `frontend/components/ZiWeiGrid.tsx` - Grid component
- `frontend/components/NatalChartView.tsx` - Chart viewer
- `frontend/components/GenerationPanel.tsx` - Generation form
- `frontend/styles/ziwei-theme.css` - Theme
- `frontend/app/use-cases/ziwei/page.tsx` - Main page (UPDATED)

### Backend
- `services/ziwei-chart-calculator.py` - Python calculator (MAIN)
- `knowledge/schema/ZIWEI_ALGORITHM.md` - Algorithm reference (LOCKED)
- `knowledge/schema/ZIWEI_*.md` - Supporting docs (10+ files)

---

## 🎯 Success Criteria

- [x] Frontend UI builds and displays correctly
- [x] All STEPS 1-5 implemented and verified
- [ ] STEPS 6-8 implemented
- [ ] Backend API endpoints created
- [ ] Frontend connects to backend
- [ ] Full E2E testing with real data
- [ ] Database storage of charts

---

**Current Velocity**: Maintaining high implementation speed with verified algorithms
**Next Review**: After STEP 6-8 completion