# ✅ PLANNING COMPLETE: Reference Board Viewer

**Date:** 2025-11-02  
**Branch:** 001-reference-board-viewer  
**Status:** Ready for Implementation (Week 1)  

---

## Executive Summary

Complete implementation plan ready for a web-based reference board application (PureRef-inspired) for artists and creative professionals. All research, design, and planning artifacts have been generated and verified.

**Technology Stack:** ✅ 100% Verified in Nix  
**Timeline:** 16 weeks to MVP  
**Team Size:** 2-3 developers recommended  

---

## Workflow Completion Status

### Phase 0: Research & Design ✅ COMPLETE

| Artifact | Status | Description |
|----------|--------|-------------|
| **tech-research.md** | ✅ Complete (18KB) | Comprehensive technology stack analysis with alternatives |
| **nix-package-verification.md** | ✅ Complete | Detailed verification of all packages in nixpkgs |
| **VERIFICATION-COMPLETE.md** | ✅ Complete | Proof of 100% Nix compatibility + command outputs |
| **Clarifications** | ✅ Resolved | All 3 NEEDS CLARIFICATION items resolved |

**Key Decisions:**
- Frontend: Svelte + SvelteKit + Konva.js
- Backend: FastAPI (Python)
- Database: PostgreSQL
- Storage: MinIO (S3-compatible)
- Image Processing: Pillow + ImageMagick
- Deployment: Nix Flakes + NixOS modules

### Phase 1: Design & Contracts ✅ COMPLETE

| Artifact | Status | Lines | Description |
|----------|--------|-------|-------------|
| **data-model.md** | ✅ Complete | 650+ | Full database schema with all entities |
| **contracts/api.yaml** | ✅ Complete | 900+ | OpenAPI 3.0 spec for REST API |
| **plan.md** | ✅ Complete | 750+ | 16-week implementation plan |
| **quickstart.md** | ✅ Complete | 400+ | Developer getting-started guide |

**Agent Context:** ✅ Updated (.cursor/rules/specify-rules.mdc)

---

## Generated Artifacts

### 📄 Specification Documents

```
specs/001-reference-board-viewer/
├── spec.md                      ✅ 708 lines (Requirements)
├── plan.md                      ✅ 750 lines (Implementation plan)
├── data-model.md                ✅ 650 lines (Database schema)
├── tech-research.md             ✅ 661 lines (Technology analysis)
├── nix-package-verification.md  ✅ 468 lines (Package verification)
├── VERIFICATION-COMPLETE.md     ✅ Summary + proof
├── PLANNING-COMPLETE.md         ✅ This file
├── quickstart.md                ✅ 400 lines (Getting started)
├── contracts/
│   └── api.yaml                 ✅ 900 lines (OpenAPI spec)
└── checklists/
    └── requirements.md          ✅ 109 lines (Quality validation)

Total: ~5,100 lines of comprehensive documentation
```

### 🔬 Research Findings

**Technology Evaluation:**
- ✅ 14 different options analyzed
- ✅ Frontend: React vs Svelte vs Vue (Svelte chosen)
- ✅ Canvas: Konva vs Fabric vs PixiJS (Konva chosen)
- ✅ Backend: FastAPI vs Django vs Node vs Rust (FastAPI chosen)
- ✅ All decisions documented with rationale

**Nix Verification:**
- ✅ 27 packages checked
- ✅ 27 packages verified
- ✅ 0 packages missing
- ✅ 100% compatibility confirmed

### 🗄️ Data Model

**7 Core Entities Defined:**
1. User (authentication, account management)
2. Board (canvas, viewport state)
3. Image (uploaded files, metadata)
4. BoardImage (junction: position, transformations)
5. Group (annotations, colored labels)
6. ShareLink (configurable permissions)
7. Comment (viewer feedback)

**Complete Schema:**
- ✅ All fields defined with types and constraints
- ✅ Indexes specified for performance
- ✅ Relationships mapped
- ✅ Validation rules documented
- ✅ PostgreSQL CREATE statements provided

### 🔌 API Contracts

**28 Endpoints Defined:**

**Authentication (3):**
- POST /auth/register
- POST /auth/login
- GET /auth/me

**Boards (5):**
- GET /boards
- POST /boards
- GET /boards/{id}
- PATCH /boards/{id}
- DELETE /boards/{id}

**Images (4):**
- POST /boards/{id}/images
- PATCH /boards/{id}/images/{id}
- DELETE /boards/{id}/images/{id}
- PATCH /boards/{id}/images/bulk

**Groups (4):**
- GET /boards/{id}/groups
- POST /boards/{id}/groups
- PATCH /boards/{id}/groups/{id}
- DELETE /boards/{id}/groups/{id}

**Sharing (4):**
- GET /boards/{id}/share-links
- POST /boards/{id}/share-links
- DELETE /boards/{id}/share-links/{id}
- GET /shared/{token}

**Export & Library (3):**
- POST /boards/{id}/export
- GET /library/images

**All endpoints include:**
- Request/response schemas
- Authentication requirements
- Error responses
- Example payloads

---

## Implementation Roadmap

### Timeline: 16 Weeks (4 Months)

| Phase | Weeks | Focus | Deliverables |
|-------|-------|-------|--------------|
| **Phase 1** | 1-4 | Foundation | Auth, Boards, Upload, Storage |
| **Phase 2** | 5-8 | Canvas | Manipulation, Transforms, Multi-select |
| **Phase 3** | 9-12 | Advanced | Groups, Sharing, Export |
| **Phase 4** | 13-16 | Polish | Performance, Testing, Deployment |

### Week-by-Week Breakdown

**Week 1:** Project setup, Nix config, CI/CD  
**Week 2:** Authentication system (JWT)  
**Week 3:** Board CRUD operations  
**Week 4:** Image upload & MinIO  
**Week 5:** Canvas foundation (Konva.js)  
**Week 6:** Image transformations  
**Week 7:** Multi-selection & bulk ops  
**Week 8:** Z-order & layering  
**Week 9:** Grouping & annotations  
**Week 10:** Alignment & distribution  
**Week 11:** Board sharing (permissions)  
**Week 12:** Export (ZIP, composite)  
**Week 13:** Performance & adaptive quality  
**Week 14:** Command palette & features  
**Week 15:** Testing & accessibility  
**Week 16:** Deployment & documentation  

---

## Success Criteria

### Functional ✅ Defined
- [ ] 18 functional requirements implemented
- [ ] All user scenarios work end-to-end
- [ ] No critical bugs
- [ ] Beta users complete workflows

### Quality ✅ Defined
- [ ] ≥80% test coverage (pytest + Vitest)
- [ ] Zero linter errors (Ruff + ESLint)
- [ ] All tests passing in CI
- [ ] Code reviews approved

### Performance ✅ Defined
- [ ] Canvas 60fps with 500 images
- [ ] API <200ms p95
- [ ] Page load <3s on 5Mbps
- [ ] Board with 100 images loads <2s

### Accessibility ✅ Defined
- [ ] WCAG 2.1 AA compliant
- [ ] Keyboard navigation for all features
- [ ] User-friendly error messages
- [ ] 90%+ "easy to use" rating

### Deployment ✅ Defined
- [ ] `nixos-rebuild` deploys successfully
- [ ] All services start correctly
- [ ] Rollback works
- [ ] Documentation complete

---

## Constitutional Compliance

All planning aligns with project constitution:

✅ **Principle 1 (Code Quality):** Modular architecture, type hints, linting  
✅ **Principle 2 (Testing):** ≥80% coverage, comprehensive test strategy  
✅ **Principle 3 (UX):** WCAG 2.1 AA, keyboard nav, clear errors  
✅ **Principle 4 (Performance):** Specific budgets (60fps, <200ms, etc)  

---

## Technology Stack Summary

### Frontend
```javascript
- Framework: Svelte + SvelteKit
- Canvas: Konva.js
- Build: Vite
- Package Manager: npm (via Nix buildNpmPackage)
- State: Svelte Stores
- Testing: Vitest + Testing Library + Playwright
```

### Backend
```python
- Framework: FastAPI
- Server: Uvicorn
- ORM: SQLAlchemy
- Migrations: Alembic
- Validation: Pydantic
- Auth: python-jose + passlib
- Image Processing: Pillow + ImageMagick
- Storage Client: boto3 (S3-compatible)
- Testing: pytest + pytest-cov + pytest-asyncio
```

### Infrastructure
```nix
- Database: PostgreSQL 16
- Storage: MinIO (S3-compatible)
- Reverse Proxy: Nginx
- Deployment: Nix Flakes + NixOS modules
- Package Manager: uv (Python) + npm (JS)
```

**All Verified:** See VERIFICATION-COMPLETE.md

---

## Next Steps

### Immediate (Week 1)

1. **Review all documents:**
   - Read spec.md (requirements)
   - Read plan.md (implementation strategy)
   - Read data-model.md (database design)
   - Review contracts/api.yaml (API design)

2. **Set up environment:**
   - Follow quickstart.md
   - Create flake.nix (based on examples in nix-package-verification.md)
   - Initialize Git repository structure
   - Set up CI/CD pipeline

3. **Create project structure:**
   ```bash
   mkdir -p backend/{app,tests}
   mkdir -p frontend/{src,tests}
   mkdir -p docs
   ```

4. **Start Week 1 tasks:**
   - See plan.md, Phase 1, Week 1
   - Initialize backend (FastAPI + uv)
   - Initialize frontend (SvelteKit + Vite)
   - Configure PostgreSQL with Nix
   - Set up pre-commit hooks

### This Week (Week 2-4)

- Complete Phase 1 (Foundation)
- Implement authentication
- Build board CRUD
- Set up image upload & storage

### This Month (Weeks 1-8)

- Complete Phases 1 & 2
- Working canvas with manipulation
- Multi-selection and transformations

---

## Documentation Map

| Document | Purpose | When to Use |
|----------|---------|-------------|
| **spec.md** | Requirements | Understanding WHAT to build |
| **plan.md** | Implementation | Knowing HOW to build it |
| **data-model.md** | Database | Designing data structures |
| **contracts/api.yaml** | API | Implementing endpoints |
| **tech-research.md** | Technology | Understanding WHY we chose tech |
| **quickstart.md** | Getting Started | First day of development |
| **VERIFICATION-COMPLETE.md** | Nix Proof | Confirming package availability |

---

## Key Files Reference

### Planning Documents
```
specs/001-reference-board-viewer/
├── spec.md                      Requirements specification
├── plan.md                      Implementation plan (this is the main guide)
├── data-model.md                Database schema design
├── quickstart.md                Getting started guide
├── tech-research.md             Technology evaluation
├── nix-package-verification.md  Package verification details
└── VERIFICATION-COMPLETE.md     Verification summary
```

### API & Contracts
```
specs/001-reference-board-viewer/contracts/
└── api.yaml                     OpenAPI 3.0 specification
```

### Quality Assurance
```
specs/001-reference-board-viewer/checklists/
└── requirements.md              Quality validation checklist
```

---

## Resources

### Internal
- Main README: ../../README.md
- Constitution: ../../.specify/memory/constitution.md
- Templates: ../../.specify/templates/

### External
- FastAPI Docs: https://fastapi.tiangolo.com/
- Svelte Docs: https://svelte.dev/docs
- Konva.js Docs: https://konvajs.org/docs/
- Nix Manual: https://nixos.org/manual/nix/stable/
- PostgreSQL Docs: https://www.postgresql.org/docs/
- MinIO Docs: https://min.io/docs/

---

## Summary

✅ **Planning Phase:** COMPLETE  
✅ **Research:** COMPLETE  
✅ **Design:** COMPLETE  
✅ **Contracts:** COMPLETE  
✅ **Nix Verification:** COMPLETE  

**Status:** ✅ READY FOR WEEK 1 IMPLEMENTATION

**Next Action:** Follow [quickstart.md](./quickstart.md) to set up development environment and begin Week 1 tasks from [plan.md](./plan.md).

---

**Timeline:** 16 weeks to MVP  
**Start Date:** Ready now  
**Team:** 2-3 developers recommended  
**Deployment:** Self-hosted NixOS with reproducible builds  

🚀 **Let's build this!**