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/collector/ipmi_mock.go

@@ -19,9 +19,9 @@ func (c *IPMIMockConnector) Protocol() string {
 
 func (c *IPMIMockConnector) Collect(ctx context.Context, req Request, emit ProgressFn) (*models.AnalysisResult, error) {
 	steps := []Progress{
-		{Status: "running", Progress: 20, Message: "IPMI: подключение к BMC..."},
-		{Status: "running", Progress: 55, Message: "IPMI: чтение инвентаря..."},
-		{Status: "running", Progress: 85, Message: "IPMI: нормализация данных..."},
+		{Status: "running", Progress: 20, Message: "IPMI: connecting to BMC..."},
+		{Status: "running", Progress: 55, Message: "IPMI: reading inventory..."},
+		{Status: "running", Progress: 85, Message: "IPMI: normalizing data..."},
 	}
 
 	for _, step := range steps {