refactor(ports): standardize service ports to 8000-8017 range and update CORS configurations across all services

- Update CORS allow_origins in blockchain-node app.py and gossip relay.py to use new port logic (8000-8016)
- Update coordinator-api config.py and config_pg.py with standardized port ranges and service labels
- Update coordinator-api health check script from port 18000 to 8000
- Update geo_load_balancer.py to use configurable host/port (default 0.0.0.0:8017)
- Update agent_security.py sandbox

apps/coordinator-api/src/app/config.py

@@ -118,10 +118,17 @@ class Settings(BaseSettings):
 
     # CORS
     allow_origins: List[str] = [
-        "http://localhost:3000",
-        "http://localhost:8080",
-        "http://localhost:8000",
-        "http://localhost:8011",
+        "http://localhost:8000",  # Coordinator API
+        "http://localhost:8001",  # Exchange API
+        "http://localhost:8002",  # Blockchain Node
+        "http://localhost:8003",  # Blockchain RPC
+        "http://localhost:8010",  # Multimodal GPU
+        "http://localhost:8011",  # GPU Multimodal
+        "http://localhost:8012",  # Modality Optimization
+        "http://localhost:8013",  # Adaptive Learning
+        "http://localhost:8014",  # Marketplace Enhanced
+        "http://localhost:8015",  # OpenClaw Enhanced
+        "http://localhost:8016",  # Web UI
     ]
 
     # Job Configuration