feat(delivery): add delivery data models and auto-migration

Add 8 GORM models for MySQL one-click delivery: DeploymentTarget,
ResourceQuota, DeliveryTask, ResourceReservation, ResourceUsage,
MySQLInstance, ExecutionJob, TaskEvent. Register them in AutoMigrate.

Relates-to: #97

server/internal/database/database.go

@@ -23,5 +23,13 @@ func AutoMigrate(db *gorm.DB) error {
 		&model.Deployment{},
 		&model.DeploymentEvent{},
 		&model.AuditLog{},
+		&model.DeploymentTarget{},
+		&model.ResourceQuota{},
+		&model.DeliveryTask{},
+		&model.ResourceReservation{},
+		&model.MySQLInstance{},
+		&model.ResourceUsage{},
+		&model.ExecutionJob{},
+		&model.TaskEvent{},
 	)
 }

server/internal/model/delivery.go

@@ -0,0 +1,132 @@
+package model
+
+import "time"
+
+const (
+	TaskPending          = "pending"
+	TaskValidating       = "validating"
+	TaskDispatching      = "dispatching"
+	TaskRunning          = "running"
+	TaskRegistering      = "registering"
+	TaskFinished         = "finished"
+	TaskRegisterFailed   = "register_failed"
+	TaskExecutionFailed  = "execution_failed"
+	TaskValidationFailed = "validation_failed"
+	TaskCanceling        = "canceling"
+	TaskCanceled         = "canceled"
+)
+
+type DeploymentTarget struct {
+	ID             uint64    `gorm:"primaryKey" json:"id"`
+	Name           string    `gorm:"size:128;not null;uniqueIndex" json:"name"`
+	TargetType     string    `gorm:"size:32;not null;index" json:"target_type"`
+	AWXInventoryID uint64    `gorm:"not null" json:"awx_inventory_id"`
+	AWXTemplateID  uint64    `gorm:"not null" json:"awx_template_id"`
+	Enabled        bool      `gorm:"not null;default:true;index" json:"enabled"`
+	Metadata       string    `gorm:"type:json" json:"metadata"`
+	CreatedAt      time.Time `json:"created_at"`
+	UpdatedAt      time.Time `json:"updated_at"`
+}
+
+type ResourceQuota struct {
+	ID             uint64    `gorm:"primaryKey" json:"id"`
+	BusinessLineID uint64    `gorm:"not null;uniqueIndex:idx_resource_quota_scope,priority:1" json:"business_line_id"`
+	TargetID       uint64    `gorm:"not null;uniqueIndex:idx_resource_quota_scope,priority:2" json:"target_id"`
+	CPUMilli       int64     `gorm:"not null" json:"cpu_milli"`
+	MemoryMi       int64     `gorm:"not null" json:"memory_mi"`
+	StorageGi      int64     `gorm:"not null" json:"storage_gi"`
+	InstanceLimit  int64     `gorm:"not null" json:"instance_limit"`
+	CreatedAt      time.Time `json:"created_at"`
+	UpdatedAt      time.Time `json:"updated_at"`
+}
+
+type DeliveryTask struct {
+	ID               string     `gorm:"size:36;primaryKey" json:"id"`
+	BusinessLineID   uint64     `gorm:"not null;index" json:"business_line_id"`
+	RequestedBy      uint64     `gorm:"not null;index" json:"requested_by"`
+	TargetType       string     `gorm:"size:32;not null" json:"target_type"`
+	TargetID         uint64     `gorm:"not null;index" json:"target_id"`
+	Namespace        string     `gorm:"size:63;not null;index" json:"namespace"`
+	InstanceName     string     `gorm:"size:63;not null" json:"instance_name"`
+	TargetHost       string     `gorm:"size:128" json:"target_host,omitempty"`
+	TargetHostIP     string     `gorm:"size:64" json:"target_host_ip,omitempty"`
+	MySQLPort        int        `gorm:"column:mysql_port;not null;default:3307" json:"mysql_port"`
+	Status           string     `gorm:"size:32;not null;index" json:"status"`
+	ImmutablePayload string     `gorm:"type:json;not null" json:"immutable_payload"`
+	PayloadHash      string     `gorm:"size:64;not null" json:"payload_hash"`
+	IdempotencyKey   string     `gorm:"size:128;not null;uniqueIndex" json:"idempotency_key"`
+	ErrorMessage     string     `gorm:"type:text" json:"error_message,omitempty"`
+	CreatedAt        time.Time  `gorm:"index" json:"created_at"`
+	UpdatedAt        time.Time  `json:"updated_at"`
+	StartedAt        *time.Time `json:"started_at,omitempty"`
+	FinishedAt       *time.Time `json:"finished_at,omitempty"`
+}
+
+type ResourceReservation struct {
+	ID             uint64    `gorm:"primaryKey" json:"id"`
+	TaskID         string    `gorm:"size:36;not null;uniqueIndex" json:"task_id"`
+	BusinessLineID uint64    `gorm:"not null;index" json:"business_line_id"`
+	TargetID       uint64    `gorm:"not null;index" json:"target_id"`
+	CPUMilli       int64     `gorm:"not null" json:"cpu_milli"`
+	MemoryMi       int64     `gorm:"not null" json:"memory_mi"`
+	StorageGi      int64     `gorm:"not null" json:"storage_gi"`
+	InstanceCount  int64     `gorm:"not null;default:1" json:"instance_count"`
+	Status         string    `gorm:"size:32;not null;index" json:"status"`
+	ExpiresAt      time.Time `gorm:"not null;index" json:"expires_at"`
+	CreatedAt      time.Time `json:"created_at"`
+	UpdatedAt      time.Time `json:"updated_at"`
+}
+
+type ResourceUsage struct {
+	ID             uint64     `gorm:"primaryKey" json:"id"`
+	TaskID         string     `gorm:"size:36;not null;uniqueIndex" json:"task_id"`
+	InstanceID     uint64     `gorm:"not null;uniqueIndex" json:"instance_id"`
+	BusinessLineID uint64     `gorm:"not null;index" json:"business_line_id"`
+	TargetID       uint64     `gorm:"not null;index" json:"target_id"`
+	CPUMilli       int64      `gorm:"not null" json:"cpu_milli"`
+	MemoryMi       int64      `gorm:"not null" json:"memory_mi"`
+	StorageGi      int64      `gorm:"not null" json:"storage_gi"`
+	InstanceCount  int64      `gorm:"not null;default:1" json:"instance_count"`
+	Status         string     `gorm:"size:32;not null;index" json:"status"`
+	CreatedAt      time.Time  `json:"created_at"`
+	UpdatedAt      time.Time  `json:"updated_at"`
+	ReleasedAt     *time.Time `json:"released_at,omitempty"`
+}
+
+type MySQLInstance struct {
+	ID             uint64    `gorm:"primaryKey" json:"id"`
+	TaskID         string    `gorm:"size:36;not null;uniqueIndex" json:"task_id"`
+	BusinessLineID uint64    `gorm:"not null;index" json:"business_line_id"`
+	TargetID       uint64    `gorm:"not null;index;uniqueIndex:idx_mysql_target_name,priority:1" json:"target_id"`
+	Namespace      string    `gorm:"size:63;not null" json:"namespace"`
+	Name           string    `gorm:"size:63;not null;uniqueIndex:idx_mysql_target_name,priority:2" json:"name"`
+	NodeName       string    `gorm:"size:128" json:"node_name"`
+	Host           string    `gorm:"size:255;not null" json:"host"`
+	Port           int       `gorm:"not null;default:3306" json:"port"`
+	Version        string    `gorm:"size:32;not null" json:"version"`
+	Status         string    `gorm:"size:32;not null;index" json:"status"`
+	CloudDMID      string    `gorm:"size:128" json:"clouddm_id,omitempty"`
+	CreatedAt      time.Time `json:"created_at"`
+	UpdatedAt      time.Time `json:"updated_at"`
+}
+
+type ExecutionJob struct {
+	ID             uint64     `gorm:"primaryKey" json:"id"`
+	TaskID         string     `gorm:"size:36;not null;uniqueIndex" json:"task_id"`
+	IdempotencyKey string     `gorm:"size:128;not null;uniqueIndex" json:"idempotency_key"`
+	ExecutorJobID  string     `gorm:"size:128;not null;uniqueIndex" json:"executor_job_id"`
+	Status         string     `gorm:"size:32;not null;index" json:"status"`
+	StartedAt      *time.Time `json:"started_at,omitempty"`
+	FinishedAt     *time.Time `json:"finished_at,omitempty"`
+	CreatedAt      time.Time  `json:"created_at"`
+	UpdatedAt      time.Time  `json:"updated_at"`
+}
+
+type TaskEvent struct {
+	ID        uint64    `gorm:"primaryKey" json:"id"`
+	TaskID    string    `gorm:"size:36;not null;index" json:"task_id"`
+	FromState string    `gorm:"size:32;not null" json:"from_state"`
+	ToState   string    `gorm:"size:32;not null" json:"to_state"`
+	Message   string    `gorm:"type:text" json:"message"`
+	CreatedAt time.Time `gorm:"index" json:"created_at"`
+}