Added __init__.py files to directories with Python files that were
missing them to fix imports and pytest discovery:
- apps/agent-coordinator/src/app and subdirectories (auth, monitoring, protocols, routing)
- apps/coordinator-api/src/app/agent_identity, reputation, utils
- apps/wallet/src/app/keystore, crypto, receipts
- apps/pool-hub/src/poolhub/services
- Test directories for agent-coordinator, blockchain-node, coordinator-api, pool-hub, wallet
- Source directories for agent-services and ai-engine
- blockchain-node subdirectories (contracts, economics, network, rpc)
- Migration directories for blockchain-node, coordinator-api, pool-hub
This improves import reliability and reduces the need for sys.path
manipulation in conftest.py.