# Unified Binary Architecture Complete ✅

## 🎯 **What Was Accomplished**

Successfully refactored **insertr-cli** and **insertr-server** into a **unified `insertr` binary**, creating a **simpler, more maintainable architecture** while preserving all functionality.

## 🚀 **Unified Binary Experience**

### **Single Binary Commands**
```bash
./insertr enhance   # 🔨 Build-time content injection
./insertr serve     # 🔌 Runtime API server
./insertr --help    # 📖 Complete command reference
```

### **Simplified Development**
```bash
just dev         # 🔥 Full-stack development (PRIMARY)
just serve       # API server only (development)  
just enhance     # Build-time enhancement only
```

### **Enhanced Build Pipeline**
```bash
just build       # Now builds: Library + Unified Binary (single executable)
npm run build    # Same - builds complete stack via scripts/build.js
```

### **Smart Configuration**
- **YAML Configuration**: `insertr.yaml` with smart defaults
- **Environment Variables**: `INSERTR_*` prefix for all settings
- **CLI Flag Precedence**: Command-line flags override config and env vars
- **Database Flexibility**: SQLite for development, PostgreSQL for production

## 📋 **Technical Architecture Changes**

### **1. Unified Command Structure** 
- **Single Binary**: `insertr` handles both enhance and serve operations
- **Cobra CLI**: Professional command structure with subcommands
- **Viper Configuration**: YAML + environment + CLI flag precedence
- **Shared Database Layer**: Single source of truth for content models

### **2. Preserved Database Architecture**
- **sqlc Code Generation**: Maintained type-safe database operations
- **Multi-Database Support**: SQLite (development) and PostgreSQL (production)
- **Version Control System**: Complete edit history with rollback capabilities
- **Database Abstraction**: Runtime database type detection

### **3. Enhanced Build Integration**
- `scripts/build.js` builds unified binary with embedded library assets
- `justfile` updated for unified binary commands
- `Air` configuration for hot reload during development
- Single binary deployment for all use cases

### **4. Configuration Flexibility**
- **YAML Config**: `insertr.yaml` for declarative configuration
- **Environment Variables**: `INSERTR_*` prefixed for all settings
- **CLI Precedence**: Command flags override file and env config
- **Smart Defaults**: Zero-configuration development workflow

## 🔄 **Simplified Development Workflow**

### **Primary Development (Default)**
```bash
just dev         # or npm run dev
# Starts: insertr serve (8080) + Demo site (3000)  
# Complete CMS experience with unified binary
```

### **Build-Time Enhancement**
```bash
just enhance     # Build-time content injection
./insertr enhance demo-site/ --output ./dist --mock
./insertr enhance src/ --api https://cms.example.com
```

### **Production Deployment**
```bash
./insertr serve --db "postgresql://user:pass@host/db"
./insertr --config production.yaml serve
```

## ✅ **Migration Benefits Achieved**

All functionality preserved with architectural improvements:
- ✅ **Single Binary**: No more separate CLI and server binaries
- ✅ **Shared Codebase**: Database models, validation, and logic unified
- ✅ **Flexible Configuration**: YAML, environment, and CLI flag support
- ✅ **Development Workflow**: Hot reload with `air` for unified binary
- ✅ **Production Ready**: Same binary handles build-time and runtime
- ✅ **Database Architecture**: Preserved sophisticated sqlc multi-DB setup

## 🏗️ **Architecture Diagram**

### **Before: Separate Binaries**
```
insertr-cli/     insertr-server/
     ↓                ↓
  enhance          serve
     ↓                ↓
  Build-time      Runtime
```

### **After: Unified Binary**
```
       insertr
      ↙        ↘
   enhance    serve
      ↓         ↓
  Build-time Runtime
      ↓         ↓
   Same Database Layer
   Same Configuration
   Same Content Models
```

## 🎉 **Result**

The architecture is now **unified and maintainable**:
- **Single Source of Truth** - No duplicate database or content logic
- **Simplified Deployment** - One binary for all use cases  
- **Better Developer Experience** - Consistent configuration and commands
- **Production Flexibility** - Build-time enhancement OR runtime API OR both

**Insertr unified binary is production-ready with improved maintainability!** 🚀