Persist controller-route website homepage bootstrap

[cbusillo]

Summary

• persist controller-route homepage intent into website.homepage_url when Odoo exposes that field
• clear stale homepage_id when the configured homepage is a controller route rather than a website.page
• add a fake-Odoo regression test for the OPW-style /shop bootstrap path

Refs #34

Validation

• uv run python -m unittest tests.test_odoo_website_bootstrap.WebsiteBootstrapHelperTests.test_controller_homepage_route_persists_homepage_url_and_clears_stale_page_homepage
• uv run ruff check --diff docker/scripts/odoo_website_bootstrap.py tests/test_odoo_website_bootstrap.py
• uv run ruff check docker/scripts/odoo_website_bootstrap.py tests/test_odoo_website_bootstrap.py
• uv run python -m unittest discover -s tests
• uv run python -m py_compile docker/scripts/odoo_website_bootstrap.py
• uv run ruff format --check .
• uv run ruff check .
• uv build