feat: complete E2E deployment flow with storage layered config and values template versioning

- Instance deployment: charts browser, deploy modal, instances list
- Values Template version management (create/history/rollback)
- Storage layered config (cluster > workspace > shared priority)
- Cluster credential decryptIfNeeded for mixed encrypted/plaintext kubeconfig
- YAML syntax validation (client-side + server-side warning)
- Frontend: charts, instances, storage, templates, admin pages
- Backend: storage service, instance service, cluster service, helm client
- Multi-Tenant Kubeconfig.md: added by user

backend/internal/domain/entity/instance.go

@@ -1,9 +1,12 @@
 package entity
 
 import (
+	"log"
 	"strings"
 	"time"
 	"unicode"
+
+	"gopkg.in/yaml.v3"
 )
 
 // InstanceStatus 实例状态
@@ -103,9 +106,31 @@ func (i *Instance) SetValues(values map[string]interface{}) {
 	i.UpdatedAt = time.Now()
 }
 
-// SetValuesYAML 设置 YAML 格式的 Values
-func (i *Instance) SetValuesYAML(yaml string) {
-	i.ValuesYAML = yaml
+// SetValuesYAML 设置 YAML 格式的 Values 并解析到 Values map
+func (i *Instance) SetValuesYAML(yamlStr string) {
+	i.ValuesYAML = yamlStr
+	if yamlStr == "" {
+		return
+	}
+	// 解析 YAML 到 map，确保 Helm 客户端能正确使用
+	var parsed map[string]interface{}
+	if err := yaml.Unmarshal([]byte(yamlStr), &parsed); err != nil {
+		log.Printf("[SetValuesYAML] WARNING: failed to parse YAML for instance %s: %s, yaml=%q", i.Name, err, yamlStr)
+		return
+	}
+	if parsed == nil {
+		return
+	}
+	// Merge into existing Values (user-provided takes precedence)
+	if i.Values == nil {
+		i.Values = make(map[string]interface{})
+	}
+	for k, v := range parsed {
+		// Only set if not already present (Values map takes precedence over YAML fallback)
+		if _, exists := i.Values[k]; !exists {
+			i.Values[k] = v
+		}
+	}
 	i.UpdatedAt = time.Now()
 }