feat(toolbox): update toolbox configuration and scripts

- Update collab/TSYSDevStack-toolbox-prompt.md with latest guidelines
- Update output/PROMPT with improved instructions for AI collaboration
- Update output/toolbox-base/PROMPT with enhanced development guidelines
- Update output/toolbox-base/README.md with current documentation
- Update output/toolbox-base/build.sh with improved build process
- Update output/toolbox-base/docker-compose.yml with refined service definitions
- Update output/toolbox-base/run.sh with enhanced runtime configuration
- Add output/toolbox-base/release.sh for release management processes

These changes improve the developer workspace experience and ensure
consistent tooling across the TSYSDevStack project.

ToolboxStack/output/toolbox-base/README.md

@@ -6,16 +6,16 @@ Daily-driver development container for ToolboxStack work. It provides a reproduc
 
 ## 🚀 Quick Start
 
-1. **Build the image**
+1. **Build the image (local dev tag)**
    ```bash
    ./build.sh
    ```
-   > Uses `docker buildx` with a local cache at `.build-cache/` for faster rebuilds.
+   > Builds and tags the image as `tsysdevstack-toolboxstack-toolbox-base:dev`. Uses `docker buildx` with a local cache at `.build-cache/` for faster rebuilds.
 2. **Start the container**
    ```bash
    ./run.sh up
    ```
-   > Mise runtimes persist to your host in `~/.local/share/mise` and `~/.cache/mise` so language/tool downloads are shared across projects.
+   > Defaults to the `release-current` tag; override with `TOOLBOX_IMAGE_OVERRIDE=...` when testing other tags. Mise runtimes persist to your host in `~/.local/share/mise` and `~/.cache/mise` so language/tool downloads are shared across projects.
 3. **Attach to a shell**
    ```bash
    docker exec -it tsysdevstack-toolboxstack-toolbox-base zsh
@@ -30,6 +30,15 @@ The compose service mounts the current repo to `/workspace` (read/write) and run
 
 ---
 
+## 🏷️ Image Tagging & Releases
+
+- `./build.sh` (no overrides) ⇒ builds `:dev` for active development.
+- `./release.sh <semver>` ⇒ rebuilds, retags, and pushes `:dev`, `:release-current`, and `v<semver>` (e.g., `./release.sh 0.2.0`). Requires a clean git tree.
+- Add `--dry-run` to rehearse the release without pushing (optionally `--allow-dirty` for experimentation only).
+- Downstream Dockerfiles should inherit from `tsysdevstack-toolboxstack-toolbox-base:release-current` (or pin to a semantic tag for reproducibility).
+
+---
+
 ## 🧩 Tooling Inventory
 
 | Category | Tooling | Notes |