perf(playback): keep the history gate off the initial bundle

The `@iptvnator/services` barrel ships in the initial bundle, so adding
PlaybackHistoryGate there (and subscribing to it from the app-wide
ExternalPlaybackService) grew renderer.initialBytes by 1,141 bytes.

- Move the gate to a new lazy-only `playback-data-access` project
  (`@iptvnator/playback/data-access`; scope:shared, domain:playback,
  type:data-access) and register it in the coverage policy.
- The gate subscribes to MPV/VLC session updates itself; it is created by
  the first deferred write, which precedes the launch it waits for.
  ExternalPlaybackService is back to master.
- The Xtream "playlist switched before confirmation" check moves to the
  lazy helper; the initial-path store only takes a `skipListRefresh` flag.

Net effect on this branch: +27 bytes over master (master itself is
108 bytes over the ratchet baseline already).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

libs/ui/playback/src/lib/audio-player/audio-player.component.spec.ts

@@ -1,7 +1,7 @@
 import { ComponentFixture, TestBed } from '@angular/core/testing';
 import { Store } from '@ngrx/store';
 import { TranslateModule } from '@ngx-translate/core';
-import { PlaybackHistoryGate } from '@iptvnator/services';
+import { PlaybackHistoryGate } from '@iptvnator/playback/data-access';
 import { AudioPlayerComponent } from './audio-player.component';
 
 describe('AudioPlayerComponent', () => {

libs/ui/playback/src/lib/audio-player/audio-player.component.ts

@@ -22,7 +22,7 @@ import { MatTooltip } from '@angular/material/tooltip';
 import { Store } from '@ngrx/store';
 import { TranslatePipe } from '@ngx-translate/core';
 import { ChannelActions } from '@iptvnator/m3u-state';
-import { PlaybackHistoryGate } from '@iptvnator/services';
+import { PlaybackHistoryGate } from '@iptvnator/playback/data-access';
 import { PlaybackHistoryConfirmation } from '../playback-history/playback-history-confirmation';
 
 @Component({

libs/ui/playback/src/lib/playback-history/playback-history-confirmation.spec.ts

@@ -1,4 +1,4 @@
-import type { PlaybackHistoryTarget } from '@iptvnator/services';
+import type { PlaybackHistoryTarget } from '@iptvnator/playback/data-access';
 import { PlaybackHistoryConfirmation } from './playback-history-confirmation';
 
 describe('PlaybackHistoryConfirmation', () => {

libs/ui/playback/src/lib/playback-history/playback-history-confirmation.ts

@@ -1,7 +1,7 @@
 import type {
     PlaybackHistoryGate,
     PlaybackHistoryTarget,
-} from '@iptvnator/services';
+} from '@iptvnator/playback/data-access';
 import { PlaybackProgressConfirmation } from './playback-progress-confirmation';
 
 export interface PlaybackHistoryConfirmationOptions {

libs/ui/playback/src/lib/web-player-view/web-player-view.component.history.spec.ts

@@ -11,11 +11,8 @@ import {
     PlaybackDiagnosticCode,
     PlaybackDiagnosticSource,
 } from '@iptvnator/playback/util';
-import {
-    PlaybackHistoryGate,
-    RuntimeCapabilitiesService,
-    SettingsStore,
-} from '@iptvnator/services';
+import { RuntimeCapabilitiesService, SettingsStore } from '@iptvnator/services';
+import { PlaybackHistoryGate } from '@iptvnator/playback/data-access';
 import {
     STORE_KEY,
     VideoPlayer,

libs/ui/playback/src/lib/web-player-view/web-player-view.component.ts

@@ -22,11 +22,8 @@ import {
     type PlaybackRecommendationTarget,
 } from '@iptvnator/playback/util';
 import { PORTAL_EXTERNAL_PLAYBACK } from '@iptvnator/portal/shared/util';
-import {
-    PlaybackHistoryGate,
-    RuntimeCapabilitiesService,
-    SettingsStore,
-} from '@iptvnator/services';
+import { RuntimeCapabilitiesService, SettingsStore } from '@iptvnator/services';
+import { PlaybackHistoryGate } from '@iptvnator/playback/data-access';
 import {
     VideoPlayer,
     type Channel,