Gallery header layout: simplify left side, tighten right-side actions

[Luca-Timo]

After the recent header decoupling work, the standard header looks consistent across layouts, but the left-hand side gets visually heavy when the sidebar is enabled, it ends up holding [Menu button with label] + [Logo] + [Company name], while the right has fewer elements. I'd like to propose a small layout adjustment and gather feedback before opening a PR.

Current state

[Menu] [Logo] [Company name] … [Event name + dates] … [Logout]

• "Menu" is a labelled button (icon + word).
• Logo sits inside the container's left padding, so it doesn't visually align with the leftmost photo in the gallery grid.
• "Download All" carries the explicit "All" suffix.

Proposed layout

Specifically:

1. Replace "Menu" with an icon-only button (Menu icon, ~32×32). The action is universally recognised; the label is noise once users know where it is.
2. Align the logo with the leftmost photo in the gallery, not with the container padding. Cleaner visual rhythm — logo, photo column, photo column, etc.
3. Rename "Download All" to "Download". If a user wants a single image, they download from the photo itself (lightbox, hover overlay). The header's "Download" button is unambiguous in context, and "All" feels redundant.
4. Order on the right stays Download → Logout. Logout is always the rightmost element.
5. Title / date / expiration block stays as-is, centred between left and right groups.

Why

• Less left-side clutter when the sidebar is enabled.
• Logo-with-photo-column alignment is a common gallery convention and looks more polished on wide screens.
• Removing "All" reduces label width on mobile and matches user mental model: per-photo downloads happen on the photo, the header button is the bulk action.
• Net: the right side becomes the primary action zone (download + logout, the two things you'd reach for), the left becomes navigation only.

Open questions

1. Is "Download" alone clear enough, or does anyone rely on the "All" wording for clarity in their galleries?
2. The logo-aligns-to-leftmost-photo change implies removing the container left padding for the header on lg+ breakpoints. Any concerns with that interacting with custom branding logos (centred / right-aligned variants)?
3. Should the menu icon also disappear when controlsStyle === 'classic' (filters inline)? Today it only renders when sidebar is on, but worth confirming.
4. Mobile: do we keep the icon-only menu, or is a hamburger menu still expected to expose secondary actions?

If there's broad agreement I'll open a PR following the same pattern as the recent decoupling work.

[the-luap]

I think it is a good option. Here my thoughts:

1. yes I think that is ok
2. maybe we should put the logo in center, so that the left side will hold less items.
3. I think that is ok to have menu disappearing
4. I wanted to have a clean mobile view but not 100% sure how you expect to let it look like

[Luca-Timo]

addressed in pr #401