docs: update README.md with documentation skills information

- Add section about documentation skills available in docs/ folder
- List all 8 documentation skills with descriptions
- Skills cover basic operations, marketplace, node coordination, wallet management, AI operations, blockchain troubleshooting, multi-node operations, and CLI reference

README.md

@@ -54,6 +54,15 @@
 - **10/10 quality score** with standardized templates
 - **Master index** for quick navigation
 - **Release notes** with version history
+- **Documentation skills** for AITBC operations in docs/ folder:
+  - aitbc-basic-operations.md - Basic CLI operations, wallet management, blockchain status
+  - aitbc-marketplace.md - Marketplace operations, GPU provider registration, trading
+  - aitbc-node-coordination.md - Multi-node coordination, git synchronization, blockchain sync
+  - aitbc-wallet-management.md - Wallet creation, import/export, balance checks, deletion
+  - aitbc-ai-operations.md - AI job submission, monitoring, resource allocation, GPU testing
+  - aitbc-blockchain-troubleshooting.md - Blockchain troubleshooting, sync issues, P2P problems
+  - aitbc-multi-node-operations.md - Multi-node operations, git sync, service restart, blockchain sync
+  - aitbc-cli.md - CLI tool reference for training agents and workflow operations
 
 ## Documentation