Add shared status-summary and icon-tooltip components and wire them into
application, service, and database headings, breadcrumbs, and previews.
Badge production and PR domain links, prefer helper popups below the
trigger, keep full wire targets for button loading, and cover the UI
with feature tests.
Standardize highlighted buttons, selected controls, and loading
indicators on coollabs accent colors; improve light-mode log toolbar
styling; enhance small popups with compact/icon modes; and align
navbars, helpers, and related layouts with matching tests.
Add a shared resource-heading-tabs scroller with overflow chevrons,
wire it into resource/server navbars, keep links menus outside overflow,
and default new git apps to Railpack instead of Nixpacks.
When preview environment variables are configured, fall back to production
variables for keys not overridden by preview values. This ensures variables
like DB_PASSWORD that exist only in production are available in the preview
.env file, enabling proper ${VAR} interpolation in docker-compose YAML.
Fallback only applies when preview variables are configured, preventing
unintended leakage of production values when previews aren't in use.
Also improves UI by hiding the Domains section when only database services
are present, and simplifies the logs view by removing status checks.