feat: 添加数据模型和存储层

- model: JobTemplate、SubmitJobRequest、JobHistoryQuery 等模型定义

- store: NewGormDB MySQL 连接池，使用 zap 日志替代 GORM 默认日志

- store: TemplateStore CRUD 操作，支持 GORM AutoMigrate

- NewGormDB 接受 gormLevel 参数，由上层传入配置值

- 完整 TDD 测试覆盖

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

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

internal/model/job.go

@@ -0,0 +1,47 @@
+package model
+
+// SubmitJobRequest is the API request for submitting a job.
+type SubmitJobRequest struct {
+	Script      string            `json:"script" binding:"required"`
+	Partition   string            `json:"partition,omitempty"`
+	QOS         string            `json:"qos,omitempty"`
+	CPUs        int32             `json:"cpus,omitempty"`
+	Memory      string            `json:"memory,omitempty"`
+	TimeLimit   string            `json:"time_limit,omitempty"`
+	JobName     string            `json:"job_name,omitempty"`
+	Environment map[string]string `json:"environment,omitempty"`
+}
+
+// JobResponse is the simplified API response for a job.
+type JobResponse struct {
+	JobID      int32    `json:"job_id"`
+	Name       string   `json:"name"`
+	State      []string `json:"job_state"`
+	Partition  string   `json:"partition"`
+	SubmitTime *int64   `json:"submit_time,omitempty"`
+	StartTime  *int64   `json:"start_time,omitempty"`
+	EndTime    *int64   `json:"end_time,omitempty"`
+	ExitCode   *int32   `json:"exit_code,omitempty"`
+	Nodes      string   `json:"nodes,omitempty"`
+}
+
+// JobListResponse is the paginated response for job listings.
+type JobListResponse struct {
+	Jobs     []JobResponse `json:"jobs"`
+	Total    int           `json:"total"`
+	Page     int           `json:"page"`
+	PageSize int           `json:"page_size"`
+}
+
+// JobHistoryQuery contains query parameters for job history.
+type JobHistoryQuery struct {
+	Users     string `form:"users" json:"users,omitempty"`
+	StartTime string `form:"start_time" json:"start_time,omitempty"`
+	EndTime   string `form:"end_time" json:"end_time,omitempty"`
+	Account   string `form:"account" json:"account,omitempty"`
+	Partition string `form:"partition" json:"partition,omitempty"`
+	State     string `form:"state" json:"state,omitempty"`
+	JobName   string `form:"job_name" json:"job_name,omitempty"`
+	Page      int    `form:"page,default=1" json:"page,omitempty"`
+	PageSize  int    `form:"page_size,default=20" json:"page_size,omitempty"`
+}