perf(sources): keep source-health helpers off the startup path

Master's #1931 lowered the initial-bytes baseline, and this branch then
sat 535 bytes over its slack. Most of its growth was runtime helpers in
`@iptvnator/shared/interfaces` (reachability, health history, reason and
fingerprint helpers) that only the lazily loaded source services call:
the bundler put them in a chunk the app preloads. They now live in
`@iptvnator/portal/shared/data-access` beside those services (types stay
in interfaces); initialBytes 1,350,438 → 1,349,048, 855 under the limit.

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

libs/workspace/shell/feature/src/lib/workspace-sources-filters-panel/workspace-sources-filters-panel.component.ts

@@ -10,7 +10,10 @@ import { MatTooltip } from '@angular/material/tooltip';
 import { Store } from '@ngrx/store';
 import { TranslatePipe } from '@ngx-translate/core';
 import { selectAllPlaylistsMeta } from '@iptvnator/m3u-state';
-import { SourceStatusService } from '@iptvnator/portal/shared/data-access';
+import {
+    SourceStatusService,
+    sourceStatusBucket,
+} from '@iptvnator/portal/shared/data-access';
 import { SourceRemovalService } from '@iptvnator/playlist/shared/ui';
 import {
     countSourcesByStatus,
@@ -20,10 +23,7 @@ import {
     SourcesTypeFilter,
     SourcesViewStateService,
 } from '@iptvnator/playlist/shared/util';
-import {
-    SOURCE_TYPE_ICONS,
-    sourceStatusBucket,
-} from '@iptvnator/shared/interfaces';
+import { SOURCE_TYPE_ICONS } from '@iptvnator/shared/interfaces';
 import {
     WORKSPACE_SHELL_ACTIONS,
     WorkspaceShellContextDrawerService,

libs/workspace/shell/feature/src/lib/workspace-sources/workspace-sources.component.ts

@@ -18,7 +18,10 @@ import { Store } from '@ngrx/store';
 import { TranslatePipe, TranslateService } from '@ngx-translate/core';
 import { map } from 'rxjs';
 import { PlaylistActions, selectAllPlaylistsMeta } from '@iptvnator/m3u-state';
-import { SourceStatusService } from '@iptvnator/portal/shared/data-access';
+import {
+    SourceStatusService,
+    sourceStatusBucket,
+} from '@iptvnator/portal/shared/data-access';
 import {
     isLiveExternalPlayerSession,
     PORTAL_EXTERNAL_PLAYBACK,
@@ -43,7 +46,6 @@ import {
 import {
     PlaylistUpdateState,
     sourceHealthType,
-    sourceStatusBucket,
 } from '@iptvnator/shared/interfaces';
 import {
     MenuItemRadioCheckDirective,