Firefox comes from Mozilla's own apt repo, pinned above Ubuntu's snap-only
package. geckodriver is at its latest release, independent of the Firefox
version. Playwright installs its Chromium and Firefox; WebKit is skipped
because no repository uses it today. Playwright's Chromium is exposed as
the headless Chrome.
Model: deepseek-v4-pro
Install valkey-server, valkey-tools and postgresql from apt. Ubuntu
26.04 ships Valkey 9 and PostgreSQL 18, replacing the postgresql16 the
audit pinned.
Model: deepseek-v4-pro