Appletini (4.0beta11)

Changes to what install.sh puts in downstream repos:

• New typecheck workflows: type-js.yml (tsc) and type-python.yml (mypy), both guarded by if: false like the test workflows; install.sh installs and cleans them up alongside the others
• Prettier reined in: .prettierrc.json updates (trailingComma, semi) and scoping so it stops formatting files it shouldn't
• .markdownlint.json updated
• .vscode/settings.json reworked (format-on-save / extension settings)
• JS workflow gains an npm ci step, and workflows were renamed/normalized
• Action bumps inside the installed workflows: actions/checkout v6→v7, actions/setup-node v6→v7, shivammathur/setup-php bump

Docs and repo housekeeping:

• README: documents the type workflows, adds a new "Default Branch" section (workflows only trigger on main unless edited), and the migration steps now mention typecheck workflows
• .gitattributes added to normalize line endings
• Dependabot config tweaks and the usual claude-code-action bumps (repo-only, not installed downstream)

Full Changelog: 4.0beta10...4.0beta11