chore: align codebase with bible engineering contracts

- identifier-normalization: use strings.EqualFold in h3c/parser.go
- import-export: CSV now uses UTF-8 BOM and semicolon delimiter
- go-code-style: translate all Russian source strings to English (ADL-007)
- go-background-tasks: add Type, Message, Result fields to Job struct
- go-api: wrap list endpoints in {items, total_count, page, per_page, total_pages}
- module-structure: rename helpers.go → context_sleep.go
- build-version-display: htmlError renders version footer on error pages
- go-logging: migrate all log.Printf calls to log/slog with structured attrs

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

internal/server/device_repository_test.go

@@ -174,7 +174,7 @@ func TestBuildSpecification_ZeroSizeMemoryWithInventoryIsShown(t *testing.T) {
 
 	spec := buildSpecification(hw)
 	for _, line := range spec {
-		if line.Category == "Память" && line.Name == "Hynix HMCG88AEBRA115N (size unknown)" && line.Quantity == 1 {
+		if line.Category == "Memory" && line.Name == "Hynix HMCG88AEBRA115N (size unknown)" && line.Quantity == 1 {
 			return
 		}
 	}