fix(qt): kiosk feedback round — chrome, search, album, artists, lyrics

Address the owner's kiosk feedback on top of the release hardening:

- Chrome: the back bar is a drag surface and shrank to 44px with one shared
  button form for Back/Forward/Connect/Cast; Qobuz Connect and Cast are a
  permanent cluster in the bar; the dead Share-logs button left the kiosk
  Settings header.
- Transport bar: the hidden overflow menu is gone; Volume is always visible
  with a vertical sheet, and Desktop mode has its own button.
- Now Playing: one centred transport row (New-bar order); lyrics are centred
  (shared LyricsLinesView gains an opt-in centered, desktop default false).
- Local Library: the media funnel and an Open (ephemeral) entry point reach
  the kiosk; Artists is its own multi-column round-card grid (kiosk-only, the
  desktop LocalArtistsTab is untouched); the Artists drill-down query no
  longer hangs off a stale derived guard.
- Search: the All-tab dashboard shelves render again — they were mounted in a
  Loader Component that read the delegate id under reuse and bound an empty
  model; they are direct children now.
- Album detail: icon actions the height of the quality badge plus play next /
  later / queue, an inline floating quality badge, and zebra rows; both album
  headers show a quality badge.
- Immersive: a quiet auto-hiding kiosk exit moved to the bottom, clear of the
  window controls.

Regression coverage in scripts/test_qt_kiosk_feedback.mjs (wired into the
runtime gate). Verified on a private authenticated Xvfb; QML audits 6/6,
Node gate 5/5, release build 0 warnings.

cc

crates/qbz-i18n/translations/de/LC_MESSAGES/qbz-ui.po

@@ -6840,3 +6840,6 @@ msgstr "Liste"
 
 msgid "Tree"
 msgstr "Baum"
+
+msgid "Forward"
+msgstr "Vorwärts"

crates/qbz-i18n/translations/es/LC_MESSAGES/qbz-ui.po

@@ -6846,3 +6846,6 @@ msgstr "Lista"
 
 msgid "Tree"
 msgstr "Árbol"
+
+msgid "Forward"
+msgstr "Adelante"

crates/qbz-i18n/translations/fr/LC_MESSAGES/qbz-ui.po

@@ -6838,3 +6838,6 @@ msgstr "Liste"
 
 msgid "Tree"
 msgstr "Arborescence"
+
+msgid "Forward"
+msgstr "Suivant"

crates/qbz-i18n/translations/ja/LC_MESSAGES/qbz-ui.po

@@ -6821,3 +6821,6 @@ msgstr "リスト"
 
 msgid "Tree"
 msgstr "ツリー"
+
+msgid "Forward"
+msgstr "進む"

crates/qbz-i18n/translations/nl/LC_MESSAGES/qbz-ui.po

@@ -6828,3 +6828,6 @@ msgstr "Lijst"
 
 msgid "Tree"
 msgstr "Boomstructuur"
+
+msgid "Forward"
+msgstr "Vooruit"

crates/qbz-i18n/translations/pt/LC_MESSAGES/qbz-ui.po

@@ -6838,3 +6838,6 @@ msgstr "Lista"
 
 msgid "Tree"
 msgstr "Árvore"
+
+msgid "Forward"
+msgstr "Avançar"

crates/qbz-i18n/translations/ru/LC_MESSAGES/qbz-ui.po

@@ -6859,3 +6859,6 @@ msgstr "Список"
 
 msgid "Tree"
 msgstr "Дерево"
+
+msgid "Forward"
+msgstr "Вперёд"