docs: update README to reflect new repository structure and IaC roadmap

docs(hpa): document full autoscaling tuning lifecycle and scale-up/scale-down validation

tuning(hpa): reduce cpu requests to 20m to validate autoscaling behavior

test(autoscaling): increase CPU burn workload to stress HPA behavior

feat(runtime): run uvicorn with 4 workers to support CPU-bound parallelism and proper HPA behavior

feat(runtime): run uvicorn with 4 workers to support CPU-bound parallelism and proper HPA behavior

feat: add CPU burn endpoint for autoscaling test

feat: add observability stack, validate autoscaling under load, and simulate node failure (self-healing validation)

feat: add resiliency and security hardening (PDB, taints, securityContext) and update README

docs: update README with HPA and autoscaling implementation

feat: add resource requests/limits and enable HPA with metrics-server validation

feat: add resource limits and rolling update strategy

ci: switch to helm-based deployment with sha versioning

Add Helm chart with parametrized deployment and release management

Update readme repo