Add checks

.github/workflows/plugin-checks.yml

@@ -0,0 +1,59 @@
+name: Plugin Checks
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  json-validation:
+    name: JSON Validation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - run: python .github/scripts/validate-json.py
+
+  frontmatter-validation:
+    name: Frontmatter Validation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - run: python .github/scripts/validate-frontmatter.py
+
+  markdown-lint:
+    name: Markdown Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+      - run: npm install -g markdownlint-cli
+      - run: markdownlint "**/*.md" --config .github/.markdownlint.json
+
+  link-check:
+    name: Link Check
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - run: python .github/scripts/check-internal-links.py
+
+  structure-integrity:
+    name: Structure Integrity
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+      - run: python .github/scripts/validate-structure.py

.github/workflows/pr-labeler.yml

@@ -0,0 +1,18 @@
+name: PR Labeler
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  label:
+    name: Label PR
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/labeler@v5
+        with:
+          configuration-path: .github/labeler.yml