re-add actions

.github/dependabot.yml

@@ -0,0 +1,18 @@
+# To get started with Dependabot version updates, you'll need to specify which
+ # package ecosystems to update and where the package manifests are located.
+ # Please see the documentation for all configuration options:
+ # https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+ version: 2
+ updates:
+ # npm
+   - package-ecosystem: "npm" # See documentation for possible values
+     directory: "/" # Location of package manifests
+     schedule:
+       interval: "monthly"
+
+ # Maintain dependencies for GitHub Actions
+   - package-ecosystem: "github-actions"
+     directory: "/"
+     schedule:
+       interval: "monthly"

.github/workflows/checkin.yml

@@ -0,0 +1,25 @@
+name: "PR Checks"
+ on: [pull_request, push]
+
+ jobs:
+   check_pr:
+     runs-on: ubuntu-latest
+     steps:
+     - uses: actions/checkout@v4.1.1
+
+     - name: "npm ci"
+       run: npm ci
+
+     - name: "npm run build"
+       run: npm run build
+
+     - name: "npm run test"
+       run: npm run test
+
+     - name: "check for uncommitted changes"
+       # Ensure no changes, but ignore node_modules dir since dev/fresh ci deps installed.
+       run: |
+         git diff --exit-code --stat -- . ':!node_modules' \
+         || (echo "##[error] found changed files after build. please 'npm run build && npm run format'" \
+                  "and check in all changes" \
+             && exit 1)

.github/workflows/publish.yml

@@ -0,0 +1,14 @@
+name: "Publish GitHub Action"
+ on:
+   push:
+     branches:    
+       - master
+
+ jobs:
+   publish:
+     runs-on: ubuntu-latest
+     steps:
+     - uses: actions/checkout@v4.1.1
+     - uses: tgymnich/publish-github-action@v1
+       with:
+         github_token: ${{ secrets.GITHUB_TOKEN }}