feat: add tool-images directory with Dockerfiles for all base tool types

- Create tool-images/ directory with organized Dockerfile templates
- Add base.dockerfile with common dev tools (git, nvim, ranger, tmux, node)
- Add code-server.dockerfile with VS Code in browser
- Add jupyter.dockerfile with Jupyter Lab
- Add opencode.dockerfile with OpenCode agent
- Add pi-agent.dockerfile with Pi Coding Agent (pi.dev)
- All images include: git, neovim, ranger, tmux, htop, tree, jq, Node.js 20
- Add README with usage instructions

tool-images/README.md

@@ -0,0 +1,52 @@
+# Tool Images
+
+This directory contains Dockerfile templates for the base tool types used in Headquarter.
+
+## Available Images
+
+| File | Tool | Description |
+|------|------|-------------|
+| `base.dockerfile` | - | Common base with git, nvim, ranger, tmux, node |
+| `code-server.dockerfile` | VS Code | Browser-based VS Code with extra tools |
+| `jupyter.dockerfile` | Jupyter | Jupyter Lab/Notebook with extra tools |
+| `opencode.dockerfile` | OpenCode | OpenCode agent server |
+| `pi-agent.dockerfile` | Pi Agent | Pi coding agent with full terminal setup |
+
+## Usage
+
+When creating a tool type in the Tool Workshop, you can reference these Dockerfiles:
+
+1. Copy the contents of the desired `.dockerfile`
+2. Paste into the "Dockerfile Template" field
+3. Set `definition_type` to `dockerfile`
+
+## Building Locally
+
+To test an image locally:
+
+```bash
+cd tool-images
+docker build -f pi-agent.dockerfile -t pi-agent:latest .
+docker run -it pi-agent:latest
+```
+
+## Customizing
+
+All images include:
+- **git** - Version control
+- **neovim** - Terminal editor
+- **ranger** - Terminal file manager
+- **tmux** - Terminal multiplexer
+- **htop** - Process viewer
+- **tree** - Directory tree
+- **jq** - JSON processor
+- **Node.js 20** - For npm-based tools
+
+The `pi-agent` image additionally includes the [Pi Coding Agent](https://pi.dev/) for AI-assisted development.
+
+## Adding New Images
+
+1. Create a new `.dockerfile` in this directory
+2. Use `base.dockerfile` as a starting point if applicable
+3. Document it in the table above
+4. Update the tool type in the database via the Tool Workshop

tool-images/base.dockerfile

@@ -0,0 +1,36 @@
+# Base development image with common tools
+FROM ubuntu:24.04
+
+# Prevent interactive prompts during apt install
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install base tools
+RUN apt-get update && apt-get install -y \
+    curl \
+    wget \
+    git \
+    neovim \
+    ranger \
+    tmux \
+    htop \
+    tree \
+    jq \
+    ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create a non-root user
+RUN useradd -m -s /bin/bash user
+WORKDIR /home/user
+
+# Install Node.js (needed for pi and many dev tools)
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
+    && apt-get install -y nodejs \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set up git configuration defaults
+RUN git config --global init.defaultBranch main \
+    && git config --global user.email "dev@headquarter.local" \
+    && git config --global user.name "Developer"
+
+USER user
+CMD ["/bin/bash"]

tool-images/code-server.dockerfile

@@ -0,0 +1,28 @@
+# VS Code in browser
+FROM lscr.io/linuxserver/code-server:latest
+
+USER root
+
+# Install additional tools
+RUN apt-get update && apt-get install -y \
+    git \
+    neovim \
+    ranger \
+    tmux \
+    htop \
+    tree \
+    jq \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Node.js
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
+    && apt-get install -y nodejs \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set up git
+RUN git config --global init.defaultBranch main
+
+# Code-server runs as abc user by default
+USER abc
+
+EXPOSE 8443

tool-images/jupyter.dockerfile

@@ -0,0 +1,23 @@
+# Jupyter Notebook/Lab
+FROM jupyter/scipy-notebook:latest
+
+USER root
+
+# Install additional tools
+RUN apt-get update && apt-get install -y \
+    git \
+    neovim \
+    ranger \
+    tmux \
+    htop \
+    tree \
+    jq \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set up git
+RUN git config --global init.defaultBranch main
+
+# Switch back to jovyan user (default for scipy-notebook)
+USER ${NB_UID}
+
+EXPOSE 8888

tool-images/opencode.dockerfile

@@ -0,0 +1,40 @@
+# OpenCode agent environment
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install base dependencies
+RUN apt-get update && apt-get install -y \
+    curl \
+    wget \
+    git \
+    neovim \
+    ranger \
+    tmux \
+    htop \
+    tree \
+    jq \
+    ca-certificates \
+    python3 \
+    python3-pip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Node.js
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
+    && apt-get install -y nodejs \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install OpenCode
+RUN npm install -g opencode
+
+# Create non-root user
+RUN useradd -m -s /bin/bash user
+WORKDIR /home/user
+
+# Set up git
+RUN git config --global init.defaultBranch main
+
+USER user
+
+EXPOSE 3000
+CMD ["opencode", "server"]

tool-images/pi-agent.dockerfile

@@ -0,0 +1,53 @@
+# Pi Coding Agent - Terminal-based coding harness
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install base dependencies
+RUN apt-get update && apt-get install -y \
+    curl \
+    wget \
+    git \
+    neovim \
+    ranger \
+    tmux \
+    htop \
+    tree \
+    jq \
+    ca-certificates \
+    python3 \
+    python3-pip \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Node.js (required for Pi)
+RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
+    && apt-get install -y nodejs \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Pi Coding Agent globally
+RUN npm install -g --ignore-scripts @earendil-works/pi-coding-agent
+
+# Create non-root user
+RUN useradd -m -s /bin/bash user
+WORKDIR /home/user
+
+# Set up git
+RUN git config --global init.defaultBranch main \
+    && git config --global user.email "dev@headquarter.local" \
+    && git config --global user.name "Developer"
+
+# Create default tmux config
+RUN echo 'set -g mouse on\nset -g default-terminal "screen-256color"' > /home/user/.tmux.conf
+
+# Create default ranger config
+RUN mkdir -p /home/user/.config/ranger \
+    && echo 'set preview_files true\nset use_preview_script true' > /home/user/.config/ranger/rc.conf
+
+# Set up Pi config directory
+RUN mkdir -p /home/user/.pi/agent
+
+USER user
+
+# Default to bash (Pi is invoked manually via `pi` command)
+CMD ["/bin/bash"]