fix(llm): make API URL configurable for Kubernetes internal service

Issue: Orchestrator pods failing with 'api.riotpiao.com is unreachable'
- URL was hardcoded to external hostname
- Inside Kubernetes cluster, needs to use internal service DNS

Changes:
- Make LocalLLMBaseURL read from LOCAL_LLM_BASE_URL env var
- Default to 'https://api.riotpiao.com' for external deployments
- Update orchestrator-job.yaml to pass internal service: http://api-gateway.api:8080
- Update worker-deployment.yaml to use same internal service URL

This allows pods to reach the LLM API via Kubernetes DNS without external network access.

k8s/git-commit.yaml

@@ -9,6 +9,6 @@ metadata:
     app.kubernetes.io/name: poimen
     app.kubernetes.io/component: orchestrator
 data:
-  GIT_COMMIT: "166674d"  # Updated automatically by CI/CD
+  GIT_COMMIT: "74a8f2e8"  # Updated automatically by CI/CD
   GIT_BRANCH: "main"
-  DEPLOYMENT_DATE: "2026-08-30"
+  DEPLOYMENT_DATE: "2026-08-31"