feat: add unified lint script for all linters

- Create script/lint that runs markdownlint and yamllint
- Update GitHub workflow to use the new script
- Update copilot instructions to reference the new script
- Simplifies linting process and centralizes linter configuration

Author: josecelano

.github/copilot-instructions.md

@@ -152,6 +152,5 @@ Note: E2E tests are excluded from pre-commit checks as they are slow and require
 ALWAYS run the linting suite before committing any changes:
 
 ```bash
-markdownlint "**/*.md"
-yamllint -c .yamllint-ci.yml .
+./script/lint
 ```

.github/workflows/testing.yml

@@ -22,11 +22,8 @@ jobs:
           sudo apt-get install -y yamllint
           sudo npm install -g markdownlint-cli
 
-      - name: Run markdown linting
-        run: markdownlint "**/*.md"
-
-      - name: Run yaml linting
-        run: yamllint -c .yamllint-ci.yml .
+      - name: Run linting
+        run: ./script/lint
   test:
     runs-on: ubuntu-latest
     name: Test

script/lint

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# Unified lint script for running all linters
+# Usage: ./script/lint
+# 
+# This script runs all configured linters for the project:
+# - markdownlint for Markdown files
+# - yamllint for YAML files
+
+set -e
+
+echo "Running all linters..."
+
+# Check if markdownlint is available
+if ! command -v markdownlint &> /dev/null; then
+    echo "Error: markdownlint is not installed. Please install it with:"
+    echo "  npm install -g markdownlint-cli"
+    exit 1
+fi
+
+# Check if yamllint is available
+if ! command -v yamllint &> /dev/null; then
+    echo "Error: yamllint is not installed. Please install it with:"
+    echo "  pip install yamllint"
+    echo "  # or on Ubuntu/Debian:"
+    echo "  sudo apt-get install yamllint"
+    exit 1
+fi
+
+echo "Running markdown linting..."
+markdownlint "**/*.md"
+
+echo "Running yaml linting..."
+yamllint -c .yamllint-ci.yml .
+
+echo "All linters passed successfully!"