feat(epg): add vertical list view for the live EPG panel (#1115)

* feat(epg): add vertical list view for the live EPG panel

Add an EPG list view — a vertical, single-day programme list — as an
alternative rendering of the live EPG panel, selectable via a new
Settings → EPG → "Guide view" toggle (epgViewMode: 'timeline' | 'list',
default 'timeline' so existing users see no change).

- New EpgListViewComponent (app-epg-list-view) mirrors
  EpgTimelineComponent's input/output contract 1:1, so all four live
  hosts (M3U player, unified live tab, Xtream, Stalker) swap the panel
  with a plain @if and identical bindings.
- Reuses the shared view-agnostic EPG modules (classifyTimelineWhen,
  hasProgramsForDateKey, epg-archive.util catch-up gating,
  epg-summary.util collapsed-summary maths, epg-date helpers,
  EpgProgrammeDialogService, app-epg-timeline-empty-state) — no
  duplicated logic.
- Rows show time range, title, optional description, live progress on
  the on-air row, catch-up "Watch" on past rows when archive playback
  is available, and a details dialog; keyboard activation guards
  nested buttons (target === currentTarget).
- Auto-focuses the on-air row on channel select, restores it across
  collapse/expand remounts, and shows a sticky in-flow "On now" strip
  (never overlaying rows) when the current programme is scrolled away;
  all scroll maths is rect-based relative to the scroller.
- List mode raises only the inline panel height via an epg--list
  modifier (--epg-inline-height clamp); timeline and collapsed heights
  are unchanged.
- Setting flows end-to-end (Settings interface → DEFAULT_SETTINGS →
  SettingsStore/StorageMap → segmented control in the EPG section);
  Electron-only UI, PWA stays on the timeline default. i18n keys added
  to all 18 locales.
- Tests: new component/row/utils/scroll-controller specs, settings
  persistence spec, swap tests in all four host specs, and Electron
  E2E for the settings round-trip and the rendered list view. Docs
  updated (m3u-playlist-module.md).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* fix(epg): address list-view review findings from Codex and Greptile

- Reset the list view to today when a new channel's programme set
  arrives while the user is parked on another day (timeline parity):
  the scroll controller now keys by the full programme-set identity
  (programsFocusKey) and commits today before focusing, instead of
  silently stranding the new channel on the stale day. (Codex P2)
- Centralise the 'timeline' fallback as a resolvedEpgViewMode computed
  on SettingsStore; the four live hosts consume the derived signal
  instead of duplicating the `?? 'timeline'` expression. (Greptile P2)
- Extract the component's reactive plumbing into
  registerEpgListViewEffects(), bringing the component back under the
  300-line guideline (290). (Greptile P2)
- Controller spec rewritten around programme-set fixtures with new
  coverage: return-to-today on channel switch, day navigation left
  alone, no-takeover when today has no data, empty-set no-op.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* fix(epg): drop malformed programmes from the list-view day filter

Reject programmes whose stop is not after their start in
buildEpgListRows — same as the timeline's buildTimelineBlocks. Bad
provider data would otherwise render impossible time ranges and could
even be offered as catch-up playable. (Codex P2 on e6fd0d08)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

libs/services/src/lib/settings-store.service.ts

@@ -1,7 +1,8 @@
-import { inject } from '@angular/core';
+import { computed, inject } from '@angular/core';
 import {
     patchState,
     signalStore,
+    withComputed,
     withHooks,
     withMethods,
     withState,
@@ -11,6 +12,7 @@ import { firstValueFrom } from 'rxjs';
 import {
     DEFAULT_DASHBOARD_RAILS_SETTINGS,
     ElectronBridgeTrustOptions,
+    EpgViewMode,
     Language,
     Settings,
     StartupBehavior,
@@ -43,6 +45,7 @@ const DEFAULT_SETTINGS: Settings = {
     downloadFolder: '',
     recordingFolder: '',
     coverSize: 'medium',
+    epgViewMode: 'timeline',
     dashboardRails: DEFAULT_DASHBOARD_RAILS_SETTINGS,
     preferUploadedEpgOverXtream: false,
     trustedPrivateNetworkEpgUrls: [],
@@ -91,6 +94,16 @@ function scheduleEmbeddedMpvPrepare(): void {
 export const SettingsStore = signalStore(
     { providedIn: 'root' },
     withState<Settings>(DEFAULT_SETTINGS),
+    withComputed((store) => ({
+        /**
+         * Live EPG panel layout with the `'timeline'` default applied — the
+         * single source of truth for the four live hosts, so the fallback is
+         * not duplicated per call-site.
+         */
+        resolvedEpgViewMode: computed<EpgViewMode>(
+            () => store.epgViewMode?.() ?? 'timeline'
+        ),
+    })),
     withMethods((store, storage = inject(StorageMap)) => ({
         async loadSettings() {
             try {
@@ -173,6 +186,8 @@ export const SettingsStore = signalStore(
                     store.recordingFolder?.() ??
                     DEFAULT_SETTINGS.recordingFolder,
                 coverSize: store.coverSize?.() ?? DEFAULT_SETTINGS.coverSize,
+                epgViewMode:
+                    store.epgViewMode?.() ?? DEFAULT_SETTINGS.epgViewMode,
                 dashboardRails: normalizeDashboardRailsSettings(
                     store.dashboardRails?.()
                 ),