Move inline code examples out of normative contracts

identifier-normalization, no-hardcoded-vendors,
vendor-installer-verification, and build-version-display follow the
go-database split: rules in contract.md, snippets in README.md. Routed
contract reads get cheaper; examples stay available on demand. Lint now
also rejects stale kit/patterns references.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

rules/patterns/no-hardcoded-vendors/README.md

@@ -0,0 +1,42 @@
+# No Hardcoded Vendors Pattern Notes
+
+This file keeps examples. The normative rules live in `contract.md`.
+
+## Запрещено
+
+```go
+if device.Vendor == "Dell" { ... }
+if strings.Contains(model, "PowerEdge") { ... }
+switch vendor {
+case "HP", "HPE", "Hewlett Packard": ...
+}
+```
+
+```go
+// Запрещено — список вендоров в коде
+var knownVendors = []string{"Dell", "HP", "Cisco", "Lenovo"}
+```
+
+## Правильно
+
+```go
+// Смотрим на возможности объекта, не на имя вендора
+if device.HasIPMI { ... }
+if device.ParserType == "redfish" { ... }
+```
+
+Маппинг в конфиге:
+
+```yaml
+# config.yaml
+vendor_parsers:
+  dell:  redfish
+  hp:    ilo
+  cisco: ucs
+```
+
+Маппинг в БД:
+
+```sql
+SELECT parser_type FROM vendor_registry WHERE LOWER(vendor) = LOWER(?);
+```