chore(systemd): remove obsolete systemd service files and update infrastructure documentation

- Remove 8 unused systemd service files from coordinator-api/systemd/
  - aitbc-adaptive-learning.service (port 8005)
  - aitbc-advanced-ai.service
  - aitbc-enterprise-api.service
  - aitbc-gpu-multimodal.service (port 8003)
  - aitbc-marketplace-enhanced.service (port 8006)
  - aitbc-modality-optimization.service (port 8004)
  - aitbc-multimodal.service (port 8002)
  - aitbc-openclaw-enhanced.service (port 8007

dev/examples/README.md

@@ -0,0 +1,131 @@
+# AITBC Local Simulation
+
+Simulate client and GPU provider interactions with independent wallets and AITBC transactions.
+
+## Structure
+
+```
+home/
+├── genesis.py          # Creates genesis block and distributes initial AITBC
+├── client/            # Customer/client wallet
+│   └── wallet.py      # Client wallet management
+├── miner/             # GPU provider wallet
+│   └── wallet.py      # Miner wallet management
+└── simulate.py        # Complete workflow simulation
+```
+
+## Quick Start
+
+### 1. Initialize the Economy
+```bash
+cd /home/oib/windsurf/aitbc/home
+python3 genesis.py
+```
+This creates:
+- Genesis wallet: 1,000,000 AITBC
+- Client wallet: 10,000 AITBC 
+- Miner wallet: 1,000 AITBC
+
+### 2. Check Wallets
+```bash
+# Client wallet
+cd client && python3 wallet.py balance
+
+# Miner wallet  
+cd miner && python3 wallet.py balance
+```
+
+### 3. Run Complete Simulation
+```bash
+cd /home/oib/windsurf/aitbc/home
+python3 simulate.py
+```
+
+## Wallet Commands
+
+### Client Wallet
+```bash
+cd client
+
+# Check balance
+python3 wallet.py balance
+
+# Show address
+python3 wallet.py address
+
+# Pay for services
+python3 wallet.py send <amount> <address> <description>
+
+# Transaction history
+python3 wallet.py history
+```
+
+### Miner Wallet
+```bash
+cd miner
+
+# Check balance with stats
+python3 wallet.py balance
+
+# Add earnings from completed job
+python3 wallet.py earn <amount> --job <job_id> --desc "Service description"
+
+# Withdraw earnings
+python3 wallet.py withdraw <amount> <address>
+
+# Mining statistics
+python3 wallet.py stats
+```
+
+## Example Workflow
+
+### 1. Client Submits Job
+```bash
+cd /home/oib/windsurf/aitbc/cli
+python3 client.py submit inference --model llama-2-7b --prompt "What is AI?"
+```
+
+### 2. Miner Processes Job
+```bash
+# Miner polls and gets job
+python3 miner.py poll
+
+# Miner earns AITBC
+cd /home/oib/windsurf/aitbc/home/miner
+python3 wallet.py earn 50.0 --job abc123 --desc "Inference task"
+```
+
+### 3. Client Pays
+```bash
+cd /home/oib/windsurf/aitbc/home/client
+
+# Get miner address
+cd ../miner && python3 wallet.py address
+# Returns: aitbc1721d5bf8c0005ded6704
+
+# Send payment
+cd ../client
+python3 wallet.py send 50.0 aitbc1721d5bf8c0005ded6704 "Payment for inference"
+```
+
+## Wallet Files
+
+- `client/client_wallet.json` - Client's wallet data
+- `miner/miner_wallet.json` - Miner's wallet data
+- `genesis_wallet.json` - Genesis wallet with remaining AITBC
+
+## Integration with CLI Tools
+
+The home wallets integrate with the CLI tools:
+
+1. Submit jobs using `cli/client.py`
+2. Process jobs using `cli/miner.py`
+3. Track payments using `home/*/wallet.py`
+
+## Tips
+
+- Each wallet has a unique address
+- All transactions are recorded with timestamps
+- Genesis wallet holds the remaining AITBC supply
+- Use `simulate.py` for a complete demo
+- Check `wallet.py history` to see all transactions