Create a minimal Django 5 project named "benchsite" with one app named "pages".
Requirements:
- Files to produce (and only these): manage.py, benchsite/__init__.py, benchsite/settings.py, benchsite/urls.py, benchsite/wsgi.py, pages/__init__.py, pages/apps.py, pages/views.py, pages/urls.py, pages/forms.py, pages/templates/pages/base.html, pages/templates/pages/home.html, pages/templates/pages/contact.html.
- settings.py: DEBUG = True, ALLOWED_HOSTS = ["*"], SQLite database at BASE_DIR / "db.sqlite3", "pages" in INSTALLED_APPS, APP_DIRS templates enabled, a SECRET_KEY string.
- URL "/" renders home.html with an <h1> containing "Welcome to BenchSite".
- URL "/contact/" renders contact.html with a Django form (ContactForm in forms.py with fields name, email, message) rendered inside a <form method="post"> with {% csrf_token %}. On valid POST, render the same page with the text "Thank you".
- Both templates extend base.html, which has links to both pages.
- No database models, no migrations needed.
Output format: output each file as a fenced code block, with a line "FILE: <path>" immediately before each block, for example:
FILE: manage.py
```python
...
```
Output nothing else.