When the right-hand user pill is clicked as a guest (barMode), the
opening bar used to show just a decorative "Menü" label pill on
the left and then settings + theme toggles — none of which are a
useful first action for someone not logged in.
- phosphor-icon-map: register SignIn as `login`, so PillDropdownBar
can render it the same way as the existing `logout` glyph.
- PillNavigation.userMenuBarItems: prepend an "Anmelden" item for
guests (no userEmail + loginHref given) that navigates to
loginHref. It becomes the first CTA in the bar, above settings /
theme / language.
- PillNavigation.userBarConfig: drop the bar-header label when the
viewer is a guest. The decorative "Menü" pill added nothing
alongside the new Anmelden action and just cluttered the leading
edge of the bar.
The popover variant of the user menu (UserMenuPanel) already had
its own guest login button — this mirrors that behaviour for the
bottom-bar variant used on mobile / narrow layouts.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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