Update CI workflow and README for submodule support

- Update CI workflow to checkout submodules recursively
- Update README with submodule cloning instructions
- Add project structure notes about submodules
- Create comprehensive review summary document

README.md

@@ -76,10 +76,14 @@ ASLE is a comprehensive DeFi liquidity infrastructure platform combining:
 
 ### Installation
 
-1. **Clone the repository**
+1. **Clone the repository with submodules**
 ```bash
-git clone <repository-url>
+# Clone with submodules (recommended)
+git clone --recurse-submodules <repository-url>
 cd asle
+
+# Or if already cloned, initialize submodules
+git submodule update --init --recursive
 ```
 
 2. **Set up environment variables**
@@ -122,14 +126,21 @@ npm run dev
 
 ```
 asle/
-├── contracts/          # Smart contracts (Foundry)
-├── backend/           # Node.js API server
-├── frontend/          # Next.js application
+├── contracts/          # Smart contracts (Foundry) - Git submodule
+├── backend/           # Node.js API server (monorepo)
+│   ├── src/api/       # REST API routes
+│   ├── src/middleware/# Express middleware
+│   ├── src/jobs/      # Background jobs/orchestration
+│   └── src/services/  # Business logic services
+├── frontend/          # Next.js application - Git submodule
+├── mobile/            # React Native mobile app
 ├── docs/              # Documentation
 ├── scripts/           # Utility scripts
 └── .github/           # CI/CD workflows
 ```
 
+**Note:** `contracts/` and `frontend/` are git submodules. See [SUBMODULE_SETUP.md](./SUBMODULE_SETUP.md) for details.
+
 For detailed structure, see [PROJECT_STRUCTURE.md](./PROJECT_STRUCTURE.md)
 
 ## 🧪 Testing