Move blockchain app READMEs to centralized documentation

- Relocate blockchain-event-bridge README content to docs/apps/blockchain/blockchain-event-bridge.md
- Relocate blockchain-explorer README content to docs/apps/blockchain/blockchain-explorer.md
- Replace app READMEs with redirect notices pointing to new documentation location
- Consolidate documentation in central docs/ directory for better organization

apps/blockchain-event-bridge/README.md

@@ -1,112 +1,9 @@
 # Blockchain Event Bridge
 
-Bridge between AITBC blockchain events and OpenClaw agent triggers using a hybrid event-driven and polling approach.
+**Documentation has moved to:** [docs/apps/blockchain/blockchain-event-bridge.md](../../docs/apps/blockchain/blockchain-event-bridge.md)
 
-## Overview
+---
 
-This service connects AITBC blockchain events (blocks, transactions, smart contract events) to OpenClaw agent actions through:
-- **Event-driven**: Subscribe to gossip broker topics for real-time critical triggers
-- **Polling**: Periodic checks for batch operations and conditions
-- **Smart Contract Events**: Monitor contract events via blockchain RPC (Phase 2)
+This file has been migrated to the central documentation location. Please update your bookmarks and references to point to the new location.
 
-## Features
-
-- Subscribes to blockchain block events via gossip broker
-- Subscribes to transaction events (when available)
-- Monitors smart contract events via blockchain RPC:
-  - AgentStaking (stake creation, rewards, tier updates)
-  - PerformanceVerifier (performance verification, penalties, rewards)
-  - AgentServiceMarketplace (service listings, purchases)
-  - BountyIntegration (bounty creation, completion)
-  - CrossChainBridge (bridge initiation, completion)
-- Triggers coordinator API actions based on blockchain events
-- Triggers agent daemon actions for agent wallet transactions
-- Triggers marketplace state updates
-- Configurable action handlers (enable/disable per type)
-- Prometheus metrics for monitoring
-- Health check endpoint
-
-## Installation
-
-```bash
-cd apps/blockchain-event-bridge
-poetry install
-```
-
-## Configuration
-
-Environment variables:
-
-- `BLOCKCHAIN_RPC_URL` - Blockchain RPC endpoint (default: `http://localhost:8006`)
-- `GOSSIP_BACKEND` - Gossip broker backend: `memory`, `broadcast`, or `redis` (default: `memory`)
-- `GOSSIP_BROADCAST_URL` - Broadcast URL for Redis backend (optional)
-- `COORDINATOR_API_URL` - Coordinator API endpoint (default: `http://localhost:8011`)
-- `COORDINATOR_API_KEY` - Coordinator API key (optional)
-- `SUBSCRIBE_BLOCKS` - Subscribe to block events (default: `true`)
-- `SUBSCRIBE_TRANSACTIONS` - Subscribe to transaction events (default: `true`)
-- `ENABLE_AGENT_DAEMON_TRIGGER` - Enable agent daemon triggers (default: `true`)
-- `ENABLE_COORDINATOR_API_TRIGGER` - Enable coordinator API triggers (default: `true`)
-- `ENABLE_MARKETPLACE_TRIGGER` - Enable marketplace triggers (default: `true`)
-- `ENABLE_POLLING` - Enable polling layer (default: `false`)
-- `POLLING_INTERVAL_SECONDS` - Polling interval in seconds (default: `60`)
-
-## Running
-
-### Development
-
-```bash
-poetry run uvicorn blockchain_event_bridge.main:app --reload --host 127.0.0.1 --port 8204
-```
-
-### Production (Systemd)
-
-```bash
-sudo systemctl start aitbc-blockchain-event-bridge
-sudo systemctl enable aitbc-blockchain-event-bridge
-```
-
-## API Endpoints
-
-- `GET /` - Service information
-- `GET /health` - Health check
-- `GET /metrics` - Prometheus metrics
-
-## Architecture
-
-```
-blockchain-event-bridge/
-├── src/blockchain_event_bridge/
-│   ├── main.py              # FastAPI app
-│   ├── config.py            # Settings
-│   ├── bridge.py            # Core bridge logic
-│   ├── metrics.py           # Prometheus metrics
-│   ├── event_subscribers/   # Event subscription modules
-│   ├── action_handlers/     # Action handler modules
-│   └── polling/             # Polling modules
-└── tests/
-```
-
-## Event Flow
-
-1. Blockchain publishes block event to gossip broker (topic: "blocks")
-2. Block event subscriber receives event
-3. Bridge parses block data and extracts transactions
-4. Bridge triggers appropriate action handlers:
-   - Coordinator API handler for AI jobs, agent messages
-   - Agent daemon handler for agent wallet transactions
-   - Marketplace handler for marketplace listings
-5. Action handlers make HTTP calls to respective services
-6. Metrics are recorded for monitoring
-
-## Testing
-
-```bash
-poetry run pytest
-```
-
-## Future Enhancements
-
-- Phase 2: Smart contract event subscription
-- Phase 3: Enhanced polling layer for batch operations
-- WebSocket support for real-time event streaming
-- Event replay for missed events
+For the complete documentation, see the [Blockchain Event Bridge documentation](../../docs/apps/blockchain/blockchain-event-bridge.md).