📄 docs: Add development checklist

Development Checklist.md

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+# ✅ Prompt Catalog Development Checklist
+
+## 🔧 Phase 1: Planning & Setup
+
+- [ ] Review and finalize requirements from `Prompt Catalog Features.md`
+- [ ] Choose JavaScript framework (React, Vue, etc.)
+- [ ] Set up Supabase project
+  - [ ] Create `prompts` table
+  - [ ] Create `users` table (future)
+  - [ ] Create `user_prompts` table (future)
+- [ ] Define JSON structure for import/export
+- [ ] Choose hosting platform (Vercel, Netlify, etc.)
+
+---
+
+## 🧱 Phase 2: Database & API
+
+- [ ] Define and implement Supabase schema
+- [ ] Set up Supabase RLS rules (if applicable)
+- [ ] Connect frontend to Supabase using client API
+
+---
+
+## 🖼 Phase 3: Front-End Interface
+
+- [ ] Build static UI from `Front End Interface.png`
+  - [ ] Sidebar navigation (System / Task)
+  - [ ] Search bar with filters
+  - [ ] Prompt list display
+  - [ ] Prompt detail view
+  - [ ] Tags display and interaction
+- [ ] Integrate UI with Supabase for live data
+- [ ] Implement CRUD operations for prompts
+
+---
+
+## 🔍 Phase 4: Search & Tagging
+
+- [ ] Implement keyword and full-text search
+- [ ] Add filter by:
+  - [ ] Type (System, Task)
+  - [ ] Tags (multi-select)
+- [ ] Create tag suggestion/autocomplete
+
+---
+
+## 🤖 Phase 5: AI Integration
+
+- [ ] Set up API key management (e.g., OpenAI, Together, Ollama)
+- [ ] Add prompt suggestion UI for user input
+- [ ] Integrate with AI API to return prompt suggestions
+
+---
+
+## 📦 Phase 6: Import/Export
+
+- [ ] Implement prompt export to JSON
+- [ ] Implement prompt import from JSON with validation
+
+---
+
+## 🔐 Phase 7: Authentication & User Features (Future)
+
+- [ ] Add Supabase Auth for login/register
+- [ ] Create user profile UI
+- [ ] Track user-owned prompts
+- [ ] Enable user favorites system
+
+---
+
+## 🚀 Phase 8: Deployment & QA
+
+- [ ] Deploy frontend to hosting platform
+- [ ] Set up Supabase production environment
+- [ ] QA Testing:
+  - [ ] UI functionality
+  - [ ] Prompt CRUD operations
+  - [ ] Search and filtering
+  - [ ] Import/export behavior
+- [ ] Write usage documentation
+
+---
+
+## 🌱 Phase 9: Post-MVP Enhancements
+
+- [ ] Add prompt rating system
+- [ ] Implement version history tracking
+- [ ] Add social sharing (links, embed)
+- [ ] Provide external API for prompt access
+- [ ] Improve AI integration with context-aware suggestions