refactor: remove 13 dead code artifacts across core/

Dead methods (9):
- Command::bootstrapModuleApp() — unused by all subclasses
- SearchConfig::providerCoverageGaps() — diagnostic method, never called
- RequestInput::queryArray() — no callers
- LocaleResolver::getAvailableLocales() / getDefaultLocale() — unused getters
- EmailVerificationService::getExpiryMinutes() — constant wrapper, never called
- AuthService::loginAndRedirect() — convenience wrapper, never called
- DepartmentService::listForUserAssignments() — no callers
- UserTenantContextService::getAvailableDepartmentsByTenant() — no callers

Dead functions (3):
- navActivePublicPages(), appNormalizeStringList(), appNormalizePositiveIntList()

Dead constant (1):
- PermissionService::API_DOCS_VIEW — duplicated via other paths

Orphaned file (1):
- bin/cli-bootstrap.php — never included anywhere

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

core/Support/helpers/app.php

@@ -354,34 +354,6 @@ function layoutHasAdminPanel(array $layoutAuth): bool
     return false;
 }
 
-/**
- * Normalize list-like input to sorted unique non-empty strings.
- *
- * @return list<string>
- */
-function appNormalizeStringList(mixed $value): array
-{
-    $raw = is_array($value) ? $value : explode(',', (string) $value);
-    $list = array_filter(array_map('trim', $raw), static fn ($item) => $item !== '');
-    $list = array_values(array_unique($list));
-    sort($list, SORT_STRING);
-    return $list;
-}
-
-/**
- * Normalize list-like input to sorted unique positive integers.
- *
- * @return list<int>
- */
-function appNormalizePositiveIntList(mixed $value): array
-{
-    $raw = is_array($value) ? $value : explode(',', (string) $value);
-    $list = array_values(array_unique(array_map('intval', $raw)));
-    $list = array_values(array_filter($list, static fn ($item) => $item > 0));
-    sort($list, SORT_NUMERIC);
-    return $list;
-}
-
 /**
  * Reserved top-level keys in layout navigation context that modules must not override.
  *