Add GitHub community standards, templates, and workflows

.github/workflows/check-docs.yml

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+name: Docs Build Check
+
+on:
+  pull_request:
+    paths:
+      - 'docs/**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: docs
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: 'docs/package-lock.json'
+          
+      - name: Install Dependencies
+        run: npm ci || npm install
+        
+      - name: Build Nextra Docs
+        run: npm run build

.github/workflows/validate-data.yml

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+name: Validate JSON Data
+
+on:
+  push:
+    paths:
+      - 'data/**/*.json'
+  pull_request:
+    paths:
+      - 'data/**/*.json'
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          
+      - name: Check JSON Validity
+        run: |
+          for file in $(find data -name "*.json"); do
+            echo "Validating $file..."
+            jq empty "$file" || exit 1
+          done
+          echo "All JSON files are valid."