refactor(cli): update API endpoints to v1 versioning and add dynamic port configuration to mock server

- Update mock-cli-server.py to use dynamic port allocation (8020-8050 range)
  - Add socket-based port availability checking
  - Generate dynamic config file at cli-dev/cli-staging-config-dynamic.yaml
  - Remove docstring header and shebang
  - Update endpoint paths: /v1/marketplace/gpus → /v1/marketplace/gpu/list, /v1/agent/workflows → /v1/agents/workflows

- Standardize all CLI command API

cli-dev/mock_server_8002.py

@@ -0,0 +1,17 @@
+import uvicorn
+from fastapi import FastAPI
+
+app = FastAPI()
+
+@app.get('/blockchain/status')
+async def blockchain_status():
+    return {
+        'status': 'connected',
+        'height': 12345,
+        'hash': '0x1234567890abcdef',
+        'timestamp': '2026-03-04T17:10:00Z',
+        'tx_count': 678
+    }
+
+if __name__ == '__main__':
+    uvicorn.run(app, host='127.0.0.1', port=8002)