fix(expert-skill): align FlyDSL selectors and validation - #423

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, github/codeql-action/analyze@v3, github/codeql-action/init@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Unexpected input(s) 'language', valid inputs are ['tools', 'languages', 'build-mode', 'analysis-kinds', 'token', 'registries', 'matrix', 'config-file', 'db-location', 'config', 'queries', 'quality-queries', 'packs', 'external-repository-token', 'setup-python-dependencies', 'source-root', 'ram', 'threads', 'debug', 'debug-artifact-name', 'debug-database-name', 'trap-caching', 'dependency-caching', 'check-run-id']

CodeQL Action v3 will be deprecated in December 2026. Please update all occurrences of the CodeQL Action in your workflow files to v4. For more information, see https://github.blog/changelog/2025-10-28-upcoming-deprecation-of-codeql-action-v3/