feat(toolbox): update toolbox template configuration

- Update ToolboxStack/output/toolbox-template/.devcontainer/devcontainer.json with improved container settings
- Update ToolboxStack/output/toolbox-template/PROMPT with enhanced instructions
- Update ToolboxStack/output/toolbox-template/SEED with updated seed data
- Update ToolboxStack/output/toolbox-template/docker-compose.yml with enhanced service definitions
- Add ToolboxStack/output/toolbox-template/README.md with documentation

This enhances the toolbox template for creating new developer environments.

ToolboxStack/output/toolbox-template/README.md

@@ -0,0 +1,107 @@
+# 🧰 TSYSDevStack Toolbox Template
+
+Template for creating new toolboxes that extend from the `toolbox-base` image.
+
+---
+
+## 🚀 Quick Start
+
+1. **Create a new toolbox**
+   ```bash
+   cp -r /path/to/toolbox-template /path/to/new-toolbox
+   cd /path/to/new-toolbox
+   ```
+   
+2. **Customize the toolbox**
+   - Edit `Dockerfile` to add toolbox-specific tooling
+   - Modify `docker-compose.yml` to adjust service configuration
+   - Update `SEED` to define the toolbox's purpose and goals
+   
+3. **Build the toolbox**
+   ```bash
+   ./build.sh
+   ```
+   
+4. **Start the toolbox**
+   ```bash
+   ./run.sh up
+   ```
+   
+5. **Access the toolbox**
+   ```bash
+   docker exec -it tsysdevstack-toolboxstack-<toolbox-name> zsh
+   ```
+   
+6. **Stop the toolbox**
+   ```bash
+   ./run.sh down
+   ```
+
+---
+
+## 🧱 Architecture
+
+- **Base Image**: Extends from `tsysdevstack-toolboxstack-toolbox-base:release-current`
+- **User**: Runs as non-root `toolbox` user (UID/GID mapped to host)
+- **Workspace**: Mounts current directory to `/workspace` (read/write)
+- **Runtime**: Inherits all tooling from base plus toolbox-specific additions
+
+---
+
+## 🛠️ Customization
+
+### Dockerfile
+Extend the base image with toolbox-specific tooling:
+```dockerfile
+# Extend from the toolbox-base image
+FROM tsysdevstack-toolboxstack-toolbox-base:release-current
+
+# Add toolbox-specific packages or configurations
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    specific-package \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+```
+
+### docker-compose.yml
+Adjust service configuration for toolbox-specific needs:
+```yaml
+services:
+  my-toolbox:
+    # Inherits all base configuration
+    # Add toolbox-specific volumes, ports, etc.
+    volumes:
+      - ./custom-config:/home/toolbox/.config/custom-tool
+```
+
+### SEED
+Define the toolbox's purpose and goals:
+```markdown
+- Describe what this toolbox should provide (languages, CLIs, workflows)
+- List required base image modifications or additional mounts
+- Note verification or testing expectations specific to this toolbox
+```
+
+---
+
+## 📂 Project Layout
+
+| Path | Purpose |
+|------|---------|
+| `Dockerfile` | Extends base image with toolbox-specific tooling |
+| `docker-compose.yml` | Service configuration for the toolbox |
+| `build.sh` | Wrapper around `docker build` with host UID/GID mapping |
+| `run.sh` | Helper to bring the service up/down |
+| `.devcontainer/devcontainer.json` | VS Code remote container definition |
+| `SEED` | Defines the toolbox's purpose and goals |
+| `PROMPT` | LLM onboarding prompt for future contributors |
+
+---
+
+## 🤝 Collaboration Notes
+
+- Inherits all collaboration policies from `toolbox-base`
+- Document toolbox-specific additions in `README.md` and `PROMPT`
+- Update `SEED` only when the high-level objectives change
+- Prefer aqua/mise for new tooling to keep installations reproducible
+- Keep documentation synchronized for future contributors