feature: Enhance devcontainer for multi-language support and testing

.devcontainer/README.md

@@ -1,136 +1,18 @@
-# Multi-Language Development Container
+# Devcontainer Status
 
-This development container provides a consistent environment for Java, JavaScript, Go, and Python development, along with CI/CD tools.
+The checked-in repo-local devcontainer stack has been retired.
 
-## Features
+Active generation paths:
 
-- **Multiple Languages**: Java, JavaScript/TypeScript, Go, and Python with all necessary build tools
-- **CI/CD Tools**: Docker, Terraform, Kubernetes (kubectl), Helm, GitHub Actions
-- **Customizable**: Configure which languages and tools to include
+- `python -m cli.devopsos init` on a fresh target generates `.devcontainer/Dockerfile`, `.devcontainer/devcontainer.json`, and `.devcontainer/devcontainer.env.json` from templates.
+- `python -m cli.devopsos scaffold devcontainer` generates the legacy two-file `.devcontainer/devcontainer.json` and `.devcontainer/devcontainer.env.json`.
 
-## Getting Started
+Active source files:
 
-### Prerequisites
+- `cli/devcontainer_templates.py`
+- `cli/templates/devcontainer/`
+- `cli/scaffold_devcontainer.py`
 
-- [Docker](https://www.docker.com/products/docker-desktop)
-- [Visual Studio Code](https://code.visualstudio.com/)
-- [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers)
+Archived legacy implementation:
 
-### Configuration
-
-#### Option A — Use the CLI (recommended)
-
-Generate `devcontainer.json` and `devcontainer.env.json` with a single command:
-
-```bash
-# From the repository root
-python -m cli.scaffold_devcontainer \
-  --languages python,java,go \
-  --cicd-tools docker,terraform,kubectl,helm \
-  --kubernetes-tools k9s,kustomize,argocd_cli,flux \
-  --devops-tools prometheus,grafana
-
-# Or via the unified CLI
-python -m cli.devopsos scaffold devcontainer
-```
-
-Run `python -m cli.scaffold_devcontainer --help` to see all available options including version overrides (`--python-version`, `--go-version`, etc.).
-
-#### Option B — Edit JSON manually
-
-1. Customize the environment by editing `.devcontainer/devcontainer.env.json`:
-
-```json
-{
-  "languages": {
-    "python": true,
-    "java": true,
-    "javascript": true,
-    "go": true
-  },
-  "cicd": {
-    "docker": true,
-    "terraform": true,
-    "kubectl": true,
-    "helm": true,
-    "github_actions": true
-  },
-  "kubernetes": {
-    "k9s": true,
-    "kustomize": true,
-    "argocd_cli": true,
-    "lens": false,
-    "kubeseal": true,
-    "flux": true,
-    "kind": true,
-    "minikube": true,
-    "openshift_cli": false
-  },
-  "versions": {
-    "python": "3.12",
-    "java": "21",
-    "node": "22",
-    "go": "1.25.0",
-    "k9s": "0.50.16",
-    "argocd": "3.3.6",
-    "flux": "2.8.5",
-    "kustomize": "5.8.0"
-  }
-}
-```
-
-2. Run the configuration script:
-
-```bash
-cd .devcontainer
-python3 configure.py
-```
-
-#### Open in VS Code
-
-After configuring (via either option), open the project in VS Code and click "Reopen in Container" when prompted.
-
-## What's Included
-
-### Languages and Tools
-
-- **Python**: Python interpreter, pip, pytest, black, flake8, mypy
-- **Java**: JDK, Maven, Gradle
-- **JavaScript/TypeScript**: Node.js, npm, yarn, TypeScript, Jest, ESLint, Prettier
-- **Go**: Go compiler, golangci-lint
-
-### CI/CD Tools
-
-- **Docker**: Docker CLI, Docker Compose
-- **Infrastructure as Code**: Terraform
-- **Kubernetes**: kubectl, Helm
-- **Workflows**: GitHub Actions runner
-
-### Kubernetes Tools
-
-- **Cluster Management**: K9s terminal UI, KinD, Minikube
-- **Application Deployment**: Kustomize, Helm
-- **GitOps**: ArgoCD CLI, Flux CD
-- **Secret Management**: Kubeseal for Sealed Secrets
-- **Observability**: Integrated with Prometheus and Grafana
-- **Configuration Generator**: Built-in tool to generate Kubernetes manifests for kubectl, Kustomize, ArgoCD, and Flux
-
-For detailed information on using the Kubernetes capabilities, see [kubernetes-capabilities.md](kubernetes-capabilities.md).
-
-## Customization
-
-You can:
-
-1. Disable languages or tools you don't need
-2. Change versions of languages
-3. Add additional tools by editing the Dockerfile
-
-## Troubleshooting
-
-- **Docker Access Issues**: Make sure the Docker socket is properly mounted
-- **Performance Issues**: Adjust Docker Desktop resource settings
-- **Missing Tools**: Check the logs during container build or modify the Dockerfile
-
-## Contributing
-
-Feel free to submit issues or pull requests to improve this development container.
+- `.legacy/devcontainer/`