feat: add workflow for prettifier

.github/workflows/prettifier.yml

@@ -0,0 +1,51 @@
+name: Prettifier
+
+on:
+    schedule:
+        - cron: "0 0 * * 0" # Runs every week on Sunday
+
+    workflow_dispatch:
+
+permissions:
+    contents: write
+    pull-requests: write
+    actions: write
+
+jobs:
+    prettify:
+        name: Prettify JSON files
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+
+            - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+
+            - run: npm ci
+
+            - name: Run the prettifier and open a PR if it changed something
+              run: |
+                  set -euo pipefail
+
+                  git config --global user.email "actions@github.com"
+                  git config --global user.name "GitHub Actions"
+
+                  BRANCH="prettify-json-files"
+
+                  git push origin --delete "$BRANCH" 2>/dev/null || true
+
+                  git checkout -b "$BRANCH"
+                  npx prettier . --write
+
+                  if git diff --quiet && git diff --cached --quiet; then
+                    echo "No formatting changes needed."
+                    exit 0
+                  fi
+
+                  git add .
+                  COUNT=$(git status -s -uno | wc -l)
+                  git commit -m "chore(domains): prettify all json files"
+                  git push --set-upstream origin "$BRANCH"
+
+                  gh pr create -l maintainer -t "chore(domains): prettify all json files" -b "$COUNT file(s) have been modified."
+              env:
+                  GH_TOKEN: ${{ github.token }}

.github/workflows/stale.yml

@@ -2,7 +2,7 @@ name: Stale
 
 on:
     schedule:
-        - cron: "0 12 * * *"
+        - cron: "0 12 * * *" # Runs at 12:00
 
     workflow_dispatch:
 

.prettierignore

@@ -0,0 +1,10 @@
+*.md
+.github
+media
+tests/*
+util/*
+*.js
+package*.json
+.prettier*
+.gitignore
+LICENSE

.prettierrc

@@ -0,0 +1,13 @@
+{
+  "trailingComma": "none",
+  "overrides": [
+    {
+      "files": "*.json",
+      "options": {
+        "parser": "json",
+        "printWidth": 1,
+        "tabWidth": 4
+      }
+    }
+  ]
+}

package.json

@@ -5,6 +5,7 @@
   },
   "devDependencies": {
     "ava": "^8.0.1",
-    "fs-extra": "^11.4.0"
+    "fs-extra": "^11.4.0",
+    "prettier": "3.9.6"
   }
-}
+}