fix: remove redundant binding tags and clarify logger compress logic

- Remove binding:"required" from model fields that are manually validated in handlers. - Add parentheses to logger compress default to clarify operator precedence.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

internal/model/job.go

@@ -2,7 +2,7 @@ package model
 
 // SubmitJobRequest is the API request for submitting a job.
 type SubmitJobRequest struct {
-	Script      string            `json:"script" binding:"required"`
+	Script      string            `json:"script"`
 	Partition   string            `json:"partition,omitempty"`
 	QOS         string            `json:"qos,omitempty"`
 	CPUs        int32             `json:"cpus,omitempty"`