feat(settings): grouped navigation, cards and switches from the settings concept (#1853)

* feat(settings): grouped navigation, cards and switches from the settings concept

Implements the Claude Design "Settings concept" handoff.

Navigation: the sidebar is a 20px "Settings" title over App, Library, Devices
and Data groups, with About pinned to the footer beside the installed version
and an update badge. The active item is a soft fill without a border. Esc
leaves settings like the header Back. Reset is no longer a page: its one
destructive action is the last card of "Backup & data".

Pages: a title and one-line subtitle, then rows grouped into titled cards
with one right-aligned control column. Selects are compact without floating
labels, checkboxes are switches, segmented controls are pills, and
descriptions are capped at 56ch. "Show subtitles" moves to Playback, the
Embedded MPV note becomes a callout under the player select (only while it
is selected), and the TMDB attribution becomes the About footer.

EPG: Add and Refresh all sit in the Sources header, the empty state has its
own Add, the format examples are one line, Clear EPG data is its own row and
the offset is a stepper. About: version, update state and channel share one
card; the nightly warning is a callout shown only while Nightly is selected,
with a shortcut to the backup page; the support buttons are neutral with
coloured icons.

Save model: the save bar stays (design option B) and now floats over the
content column, counts the staged changes, answers Cmd/Ctrl+S, and marks
pages with staged edits in the sidebar. A saved change that waits for a
restart shows a dismissible notice.

Rows stack under 600px of pane width (the page is a size container, so the
persistent sidebar is accounted for). Page-specific styles moved into the
About, EPG, Backup and Remote control section stylesheets to stay within the
component style budget. New SETTINGS keys are translated in all 19 locales
and NAV_RESET is removed; brand names and loanwords that stay English are in
the identical-value baseline.

E2E: Material slide toggles report aria-checked after the next render, so
both suites toggle through a setSwitch helper; the settings nav is a
navigation landmark, so the Dashboard rail link is scoped to the rail.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* fix(settings): compare restart notices against the running app, fix CI fallout

The restart notice now lists only the restart controls whose saved value
differs from what the running app uses: the stored values at first load,
or what the embedded engine reports it actually runs for the frame-copy
opt-in. Saving the launch value back withdraws the notice instead of
leaving it up with no chip to explain it. The refresh reads the current
list untracked and writes only a changed one, because the engine probe
effect calls it.

CI: the zoneless checklist dropped the deleted Reset section component, and
the theme-tokens Electron E2E floats the recording folder label on the
Playback page now that the settings selects carry no floating label.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* fix(settings): keep a dismissed restart reminder away until the setting changes

"Later" now records the saved value it dismissed, for the rest of the app
run, so an unrelated save (or reopening Settings) does not bring the same
reminder back. It returns once a restart setting is saved with another
value.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

docs/architecture/iptvnator-ui-guidelines.md

@@ -756,6 +756,37 @@ flat ancestor-color compositing is only appropriate outside that layered hero.
 ## Settings Surfaces
 
 Settings use the same system but are flatter than content-heavy views.
+Reference: `apps/web/src/app/settings/settings.component.scss` and the
+per-theme tokens in `apps/web/src/_settings-theme.scss`.
+
+### Structure
+
+- The sidebar is a 20px "Settings" title over four groups (App, Library,
+  Devices, Data), with About pinned to the footer beside the installed
+  version and an update badge. The active item is a soft selection fill with
+  tinted text and no border, so the list never shifts. Back lives in the
+  workspace header and Esc runs it. Section pages are defined once in
+  `SETTINGS_SECTION_DEFINITIONS` (`libs/workspace/shell/util`).
+- Each page is a title (26px) and one-line subtitle, then sections: a 14px
+  heading, an optional description and action buttons, and a card.
+- Rows (`.setting-item`) are a label column (13.5px title, description
+  capped at 56ch) and one right-aligned control column. Put every control in
+  that column, including segmented controls; the page is a size container
+  and rows stack under 600px of pane width. Keep `data-setting-id` on every row: settings search and the
+  command palette reveal rows by it, and the registry spec checks the index
+  against the templates.
+- Controls: `.settings-select` is a 220px outlined select without a floating
+  label (the row title names it; pass `aria-labelledby`); boolean settings
+  are `mat-slide-toggle` switches; segmented choices use `.theme-switcher`
+  as a pill; `.settings-chip` marks rows that apply after a restart or are
+  experimental; `.settings-callout` (`--info`, `--warn`) sits under the row
+  it explains inside `.setting-item__sub` and only while that choice is made.
+- Destructive actions keep the confirm dialog from the Dialogs section; the
+  row itself uses `.app-destructive-button` on a stroked button.
+- The save bar floats over the content column while the form is dirty with
+  the change count, Discard and Save (Cmd/Ctrl+S); the sidebar marks pages
+  with staged edits. A saved change that waits for a restart shows a sticky
+  notice at the top of the page.
 
 ### Light Theme
 

docs/architecture/zoneless-migration.md

@@ -85,7 +85,6 @@ picker), so each marks itself on the form's `events` through
 - [x] `apps/web/src/app/settings/settings-general-section.component.ts`
 - [x] `apps/web/src/app/settings/settings-playback-section.component.ts`
 - [x] `apps/web/src/app/settings/settings-remote-control-section.component.ts`
-- [x] `apps/web/src/app/settings/settings-reset-section.component.ts`
 - [x] `apps/web/src/app/settings/settings-tmdb-section.component.ts`
 - [x] `apps/web/src/app/settings/settings-unsaved-changes-dialog.component.ts`