feat(workspaces): transform workspaces feature into a distributable extension

extensions/workspaces/scripts/provision-worker.sh

@@ -0,0 +1,59 @@
+#!/bin/bash
+set -e
+
+# Ensure we have a valid environment for non-interactive startup
+export USER=${USER:-ubuntu}
+export HOME=/home/$USER
+export DEBIAN_FRONTEND=noninteractive
+
+echo "🛠️ Provisioning High-Performance Gemini CLI Maintainer Worker..."
+
+# Wait for apt lock
+wait_for_apt() {
+  while sudo fuser /var/lib/dpkg/lock-frontend /var/lib/apt/lists/lock >/dev/null 2>&1 ; do
+    sleep 2
+  done
+}
+
+wait_for_apt
+
+# 1. System Essentials (Inc. libraries for native node modules)
+apt-get update && apt-get install -y \
+    curl git git-lfs tmux build-essential unzip jq gnupg cron \
+    libsecret-1-dev libkrb5-dev
+
+# 2. GitHub CLI
+if ! command -v gh &> /dev/null; then
+    curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg
+    chmod go+r /usr/share/keyrings/githubcli-archive-keyring.gpg
+    echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | tee /etc/apt/sources.list.d/github-cli.list > /dev/null
+    wait_for_apt
+    apt-get update && apt-get install gh -y
+fi
+
+# 3. Direct Node.js 20 Installation (NodeSource)
+if ! command -v node &> /dev/null; then
+    echo "Installing Node.js 20..."
+    curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
+    wait_for_apt
+    apt-get install -y nodejs
+fi
+
+# 4. Global Maintenance Tooling
+echo "Installing global developer tools..."
+npm install -g tsx vitest @google/gemini-cli@nightly
+
+# 5. Pre-warm Repository (Main Hub)
+# We clone and build the main repo in the image so that new worktrees start with a warm cache
+REMOTE_WORK_DIR="$HOME/dev/main"
+mkdir -p "$HOME/dev"
+if [ ! -d "$REMOTE_WORK_DIR" ]; then
+    echo "Pre-cloning and building repository..."
+    git clone --filter=blob:none https://github.com/google-gemini/gemini-cli.git "$REMOTE_WORK_DIR"
+    cd "$REMOTE_WORK_DIR"
+    npm install --no-audit --no-fund
+    npm run build
+fi
+
+chown -R $USER:$USER $HOME/dev
+echo "✅ Provisioning Complete!"