feat(task): auto-inject scheduling params into script template via scheduling_map

Add scheduling_map field to ParameterSchema so Application creators can
declare that a parameter (e.g. NP) maps to a scheduling field (e.g. cpus).
The backend auto-injects the scheduling value into script template variables
before rendering, eliminating duplicate user input. The frontend hides
mapped parameters from the form and injects their values on submit.

internal/model/application.go

@@ -43,7 +43,8 @@ type ParameterSchema struct {
 	Required    bool     `json:"required,omitempty"`    // 是否必填
 	Default     string   `json:"default,omitempty"`     // 默认值
 	Options     []string `json:"options,omitempty"`     // 枚举选项列表
-	Description string   `json:"description,omitempty"` // 参数说明
+	Description   string   `json:"description,omitempty"` // 参数说明
+	SchedulingMap string   `json:"scheduling_map,omitempty"` // maps to a scheduling param
 }
 
 // CreateApplicationRequest 是创建应用的 API 请求。