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/SearchConfig.php

@@ -241,25 +241,4 @@ class SearchConfig
         return SearchQueryNormalizer::normalizeScoreQuery($query);
     }
 
-    /**
-     * @return array{missingIcons: string[], missingListUrls: string[]}
-     */
-    public static function providerCoverageGaps(): array
-    {
-        $missingIcons = [];
-        $missingListUrls = [];
-        foreach (SearchSqlResourceProvider::resourceKeys() as $key) {
-            if (!SearchUiMetaProvider::hasIconForKey($key)) {
-                $missingIcons[] = $key;
-            }
-            if (!SearchUiMetaProvider::hasListUrlForKey($key)) {
-                $missingListUrls[] = $key;
-            }
-        }
-
-        return [
-            'missingIcons' => $missingIcons,
-            'missingListUrls' => $missingListUrls,
-        ];
-    }
 }