tinqs/ci — composite actions + Lambda dispatcher for Spot CI runners

Actions: checkout, setup-go, setup-node, setup-aws
Dispatcher: Lambda → EC2 Spot (ephemeral, self-terminating)
Images: base, go, node, docker, deploy, godot

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

setup-node/README.md

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+# tinqs/ci/setup-node
+
+Installs Node.js and optionally pnpm.
+
+Detects Alpine vs Debian and uses the right package manager (`apk` or NodeSource). Skips installation if the correct major version is already present in the runner image.
+
+## Usage
+
+```yaml
+- uses: tinqs/ci/setup-node@v1
+```
+
+### Options
+
+```yaml
+- uses: tinqs/ci/setup-node@v1
+  with:
+    node-version: '22'    # default: 22
+    pnpm: 'true'          # default: true
+```
+
+## Inputs
+
+| Input | Default | Description |
+|-------|---------|-------------|
+| `node-version` | `22` | Node.js major version |
+| `pnpm` | `true` | Install pnpm globally |

setup-node/action.yml

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+# tinqs/ci/setup-node — Tinqs Studio CI
+# Installs Node.js and optionally pnpm.
+# Detects Alpine (apk), Debian (apt-get), and Amazon Linux/RHEL (dnf).
+# Skips install if the correct major version is already present (pre-baked AMI).
+# Composite action — runs directly on the host.
+# Author: Ozan + Claude Code — 2026-05-22
+
+name: 'Tinqs Setup Node'
+description: 'Install Node.js and pnpm'
+
+inputs:
+  node-version:
+    description: 'Node.js major version'
+    default: '22'
+  pnpm:
+    description: 'Install pnpm (true/false)'
+    default: 'true'
+
+runs:
+  using: 'composite'
+  steps:
+    - run: |
+        NODE_VERSION="${{ inputs.node-version }}"
+        INSTALL_PNPM="${{ inputs.pnpm }}"
+
+        # Skip if already installed at correct major version
+        if command -v node &>/dev/null; then
+          CURRENT=$(node --version | sed 's/v//' | cut -d. -f1)
+          if [ "$CURRENT" = "$NODE_VERSION" ]; then
+            echo "Node $NODE_VERSION already installed"
+            node --version
+            if [ "$INSTALL_PNPM" = "true" ]; then
+              if command -v pnpm &>/dev/null; then
+                pnpm --version
+                exit 0
+              else
+                npm install -g pnpm
+                pnpm --version
+                exit 0
+              fi
+            fi
+            exit 0
+          fi
+        fi
+
+        echo "Installing Node.js $NODE_VERSION..."
+        if command -v apk &>/dev/null; then
+          # Alpine
+          apk add --no-cache nodejs npm
+        elif command -v dnf &>/dev/null; then
+          # Amazon Linux / RHEL / Fedora
+          curl -fsSL "https://rpm.nodesource.com/setup_${NODE_VERSION}.x" | bash -
+          dnf install -y nodejs
+        elif command -v apt-get &>/dev/null; then
+          # Debian/Ubuntu
+          curl -fsSL "https://deb.nodesource.com/setup_${NODE_VERSION}.x" | bash -
+          apt-get install -y nodejs
+        else
+          echo "ERROR: unsupported package manager" && exit 1
+        fi
+
+        if [ "$INSTALL_PNPM" = "true" ]; then
+          npm install -g pnpm
+          pnpm --version
+        fi
+
+        node --version
+      shell: bash