docs: remove legacy content references from main documentation

- Removed legacy Coordinator API reference from README.md
- Removed deprecated Wallet Fund entry from GLOSSARY.md
- Updated shell scripts deprecation notice in ENVIRONMENT_SETUP.md
- Removed deprecated faucet setup section from WALLET_FUNDING.md
- Removed legacy human support section from AGENT_INDEX.md

docs/agent-training/ENVIRONMENT_SETUP.md

@@ -276,7 +276,7 @@ Log levels:
 
 ## Migration from Shell Scripts
 
-The shell scripts in `/opt/aitbc/scripts/training/` are maintained for backward compatibility but are deprecated.
+The shell scripts in `/opt/aitbc/scripts/training/` are maintained for backward compatibility. The Python-based training environment system is the recommended approach.
 
 **Migration Guide:**
 

docs/agent-training/WALLET_FUNDING.md

@@ -60,9 +60,9 @@ GENESIS_PASSWORD=$(cat /var/lib/aitbc/keystore/.genesis_password)
 
 The AITBC system includes a faucet service for automated wallet funding.
 
-### Faucet Setup (Deprecated)
+### Faucet Setup
 
-The bash-based faucet setup script is deprecated. Use the Python-based setup system instead:
+Use the Python-based setup system for faucet configuration:
 
 ```bash
 python3 -m aitbc.training_setup.cli setup