feat: 图片生成计费功能

- 新增 Group 图片价格配置（image_price_1k/2k/4k）
- BillingService 新增 CalculateImageCost 方法
- AntigravityGatewayService 支持识别图片生成模型并按次计费
- UsageLog 新增 image_count 和 image_size 字段
- 前端分组管理支持配置图片价格（antigravity 和 gemini 平台）
- 图片计费复用通用计费能力（余额检查、扣费、倍率、订阅限额）

backend/ent/group.go

@@ -45,6 +45,12 @@ type Group struct {
 	MonthlyLimitUsd *float64 `json:"monthly_limit_usd,omitempty"`
 	// DefaultValidityDays holds the value of the "default_validity_days" field.
 	DefaultValidityDays int `json:"default_validity_days,omitempty"`
+	// ImagePrice1k holds the value of the "image_price_1k" field.
+	ImagePrice1k *float64 `json:"image_price_1k,omitempty"`
+	// ImagePrice2k holds the value of the "image_price_2k" field.
+	ImagePrice2k *float64 `json:"image_price_2k,omitempty"`
+	// ImagePrice4k holds the value of the "image_price_4k" field.
+	ImagePrice4k *float64 `json:"image_price_4k,omitempty"`
 	// Edges holds the relations/edges for other nodes in the graph.
 	// The values are being populated by the GroupQuery when eager-loading is set.
 	Edges        GroupEdges `json:"edges"`
@@ -153,7 +159,7 @@ func (*Group) scanValues(columns []string) ([]any, error) {
 		switch columns[i] {
 		case group.FieldIsExclusive:
 			values[i] = new(sql.NullBool)
-		case group.FieldRateMultiplier, group.FieldDailyLimitUsd, group.FieldWeeklyLimitUsd, group.FieldMonthlyLimitUsd:
+		case group.FieldRateMultiplier, group.FieldDailyLimitUsd, group.FieldWeeklyLimitUsd, group.FieldMonthlyLimitUsd, group.FieldImagePrice1k, group.FieldImagePrice2k, group.FieldImagePrice4k:
 			values[i] = new(sql.NullFloat64)
 		case group.FieldID, group.FieldDefaultValidityDays:
 			values[i] = new(sql.NullInt64)
@@ -271,6 +277,27 @@ func (_m *Group) assignValues(columns []string, values []any) error {
 			} else if value.Valid {
 				_m.DefaultValidityDays = int(value.Int64)
 			}
+		case group.FieldImagePrice1k:
+			if value, ok := values[i].(*sql.NullFloat64); !ok {
+				return fmt.Errorf("unexpected type %T for field image_price_1k", values[i])
+			} else if value.Valid {
+				_m.ImagePrice1k = new(float64)
+				*_m.ImagePrice1k = value.Float64
+			}
+		case group.FieldImagePrice2k:
+			if value, ok := values[i].(*sql.NullFloat64); !ok {
+				return fmt.Errorf("unexpected type %T for field image_price_2k", values[i])
+			} else if value.Valid {
+				_m.ImagePrice2k = new(float64)
+				*_m.ImagePrice2k = value.Float64
+			}
+		case group.FieldImagePrice4k:
+			if value, ok := values[i].(*sql.NullFloat64); !ok {
+				return fmt.Errorf("unexpected type %T for field image_price_4k", values[i])
+			} else if value.Valid {
+				_m.ImagePrice4k = new(float64)
+				*_m.ImagePrice4k = value.Float64
+			}
 		default:
 			_m.selectValues.Set(columns[i], values[i])
 		}
@@ -398,6 +425,21 @@ func (_m *Group) String() string {
 	builder.WriteString(", ")
 	builder.WriteString("default_validity_days=")
 	builder.WriteString(fmt.Sprintf("%v", _m.DefaultValidityDays))
+	builder.WriteString(", ")
+	if v := _m.ImagePrice1k; v != nil {
+		builder.WriteString("image_price_1k=")
+		builder.WriteString(fmt.Sprintf("%v", *v))
+	}
+	builder.WriteString(", ")
+	if v := _m.ImagePrice2k; v != nil {
+		builder.WriteString("image_price_2k=")
+		builder.WriteString(fmt.Sprintf("%v", *v))
+	}
+	builder.WriteString(", ")
+	if v := _m.ImagePrice4k; v != nil {
+		builder.WriteString("image_price_4k=")
+		builder.WriteString(fmt.Sprintf("%v", *v))
+	}
 	builder.WriteByte(')')
 	return builder.String()
 }

backend/ent/group/group.go

@@ -43,6 +43,12 @@ const (
 	FieldMonthlyLimitUsd = "monthly_limit_usd"
 	// FieldDefaultValidityDays holds the string denoting the default_validity_days field in the database.
 	FieldDefaultValidityDays = "default_validity_days"
+	// FieldImagePrice1k holds the string denoting the image_price_1k field in the database.
+	FieldImagePrice1k = "image_price_1k"
+	// FieldImagePrice2k holds the string denoting the image_price_2k field in the database.
+	FieldImagePrice2k = "image_price_2k"
+	// FieldImagePrice4k holds the string denoting the image_price_4k field in the database.
+	FieldImagePrice4k = "image_price_4k"
 	// EdgeAPIKeys holds the string denoting the api_keys edge name in mutations.
 	EdgeAPIKeys = "api_keys"
 	// EdgeRedeemCodes holds the string denoting the redeem_codes edge name in mutations.
@@ -132,6 +138,9 @@ var Columns = []string{
 	FieldWeeklyLimitUsd,
 	FieldMonthlyLimitUsd,
 	FieldDefaultValidityDays,
+	FieldImagePrice1k,
+	FieldImagePrice2k,
+	FieldImagePrice4k,
 }
 
 var (
@@ -267,6 +276,21 @@ func ByDefaultValidityDays(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldDefaultValidityDays, opts...).ToFunc()
 }
 
+// ByImagePrice1k orders the results by the image_price_1k field.
+func ByImagePrice1k(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImagePrice1k, opts...).ToFunc()
+}
+
+// ByImagePrice2k orders the results by the image_price_2k field.
+func ByImagePrice2k(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImagePrice2k, opts...).ToFunc()
+}
+
+// ByImagePrice4k orders the results by the image_price_4k field.
+func ByImagePrice4k(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImagePrice4k, opts...).ToFunc()
+}
+
 // ByAPIKeysCount orders the results by api_keys count.
 func ByAPIKeysCount(opts ...sql.OrderTermOption) OrderOption {
 	return func(s *sql.Selector) {

backend/ent/group/where.go

@@ -125,6 +125,21 @@ func DefaultValidityDays(v int) predicate.Group {
 	return predicate.Group(sql.FieldEQ(FieldDefaultValidityDays, v))
 }
 
+// ImagePrice1k applies equality check predicate on the "image_price_1k" field. It's identical to ImagePrice1kEQ.
+func ImagePrice1k(v float64) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldImagePrice1k, v))
+}
+
+// ImagePrice2k applies equality check predicate on the "image_price_2k" field. It's identical to ImagePrice2kEQ.
+func ImagePrice2k(v float64) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldImagePrice2k, v))
+}
+
+// ImagePrice4k applies equality check predicate on the "image_price_4k" field. It's identical to ImagePrice4kEQ.
+func ImagePrice4k(v float64) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldImagePrice4k, v))
+}
+
 // CreatedAtEQ applies the EQ predicate on the "created_at" field.
 func CreatedAtEQ(v time.Time) predicate.Group {
 	return predicate.Group(sql.FieldEQ(FieldCreatedAt, v))
@@ -830,6 +845,156 @@ func DefaultValidityDaysLTE(v int) predicate.Group {
 	return predicate.Group(sql.FieldLTE(FieldDefaultValidityDays, v))
 }
 
+// ImagePrice1kEQ applies the EQ predicate on the "image_price_1k" field.
+func ImagePrice1kEQ(v float64) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldImagePrice1k, v))
+}
+
+// ImagePrice1kNEQ applies the NEQ predicate on the "image_price_1k" field.
+func ImagePrice1kNEQ(v float64) predicate.Group {
+	return predicate.Group(sql.FieldNEQ(FieldImagePrice1k, v))
+}
+
+// ImagePrice1kIn applies the In predicate on the "image_price_1k" field.
+func ImagePrice1kIn(vs ...float64) predicate.Group {
+	return predicate.Group(sql.FieldIn(FieldImagePrice1k, vs...))
+}
+
+// ImagePrice1kNotIn applies the NotIn predicate on the "image_price_1k" field.
+func ImagePrice1kNotIn(vs ...float64) predicate.Group {
+	return predicate.Group(sql.FieldNotIn(FieldImagePrice1k, vs...))
+}
+
+// ImagePrice1kGT applies the GT predicate on the "image_price_1k" field.
+func ImagePrice1kGT(v float64) predicate.Group {
+	return predicate.Group(sql.FieldGT(FieldImagePrice1k, v))
+}
+
+// ImagePrice1kGTE applies the GTE predicate on the "image_price_1k" field.
+func ImagePrice1kGTE(v float64) predicate.Group {
+	return predicate.Group(sql.FieldGTE(FieldImagePrice1k, v))
+}
+
+// ImagePrice1kLT applies the LT predicate on the "image_price_1k" field.
+func ImagePrice1kLT(v float64) predicate.Group {
+	return predicate.Group(sql.FieldLT(FieldImagePrice1k, v))
+}
+
+// ImagePrice1kLTE applies the LTE predicate on the "image_price_1k" field.
+func ImagePrice1kLTE(v float64) predicate.Group {
+	return predicate.Group(sql.FieldLTE(FieldImagePrice1k, v))
+}
+
+// ImagePrice1kIsNil applies the IsNil predicate on the "image_price_1k" field.
+func ImagePrice1kIsNil() predicate.Group {
+	return predicate.Group(sql.FieldIsNull(FieldImagePrice1k))
+}
+
+// ImagePrice1kNotNil applies the NotNil predicate on the "image_price_1k" field.
+func ImagePrice1kNotNil() predicate.Group {
+	return predicate.Group(sql.FieldNotNull(FieldImagePrice1k))
+}
+
+// ImagePrice2kEQ applies the EQ predicate on the "image_price_2k" field.
+func ImagePrice2kEQ(v float64) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldImagePrice2k, v))
+}
+
+// ImagePrice2kNEQ applies the NEQ predicate on the "image_price_2k" field.
+func ImagePrice2kNEQ(v float64) predicate.Group {
+	return predicate.Group(sql.FieldNEQ(FieldImagePrice2k, v))
+}
+
+// ImagePrice2kIn applies the In predicate on the "image_price_2k" field.
+func ImagePrice2kIn(vs ...float64) predicate.Group {
+	return predicate.Group(sql.FieldIn(FieldImagePrice2k, vs...))
+}
+
+// ImagePrice2kNotIn applies the NotIn predicate on the "image_price_2k" field.
+func ImagePrice2kNotIn(vs ...float64) predicate.Group {
+	return predicate.Group(sql.FieldNotIn(FieldImagePrice2k, vs...))
+}
+
+// ImagePrice2kGT applies the GT predicate on the "image_price_2k" field.
+func ImagePrice2kGT(v float64) predicate.Group {
+	return predicate.Group(sql.FieldGT(FieldImagePrice2k, v))
+}
+
+// ImagePrice2kGTE applies the GTE predicate on the "image_price_2k" field.
+func ImagePrice2kGTE(v float64) predicate.Group {
+	return predicate.Group(sql.FieldGTE(FieldImagePrice2k, v))
+}
+
+// ImagePrice2kLT applies the LT predicate on the "image_price_2k" field.
+func ImagePrice2kLT(v float64) predicate.Group {
+	return predicate.Group(sql.FieldLT(FieldImagePrice2k, v))
+}
+
+// ImagePrice2kLTE applies the LTE predicate on the "image_price_2k" field.
+func ImagePrice2kLTE(v float64) predicate.Group {
+	return predicate.Group(sql.FieldLTE(FieldImagePrice2k, v))
+}
+
+// ImagePrice2kIsNil applies the IsNil predicate on the "image_price_2k" field.
+func ImagePrice2kIsNil() predicate.Group {
+	return predicate.Group(sql.FieldIsNull(FieldImagePrice2k))
+}
+
+// ImagePrice2kNotNil applies the NotNil predicate on the "image_price_2k" field.
+func ImagePrice2kNotNil() predicate.Group {
+	return predicate.Group(sql.FieldNotNull(FieldImagePrice2k))
+}
+
+// ImagePrice4kEQ applies the EQ predicate on the "image_price_4k" field.
+func ImagePrice4kEQ(v float64) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldImagePrice4k, v))
+}
+
+// ImagePrice4kNEQ applies the NEQ predicate on the "image_price_4k" field.
+func ImagePrice4kNEQ(v float64) predicate.Group {
+	return predicate.Group(sql.FieldNEQ(FieldImagePrice4k, v))
+}
+
+// ImagePrice4kIn applies the In predicate on the "image_price_4k" field.
+func ImagePrice4kIn(vs ...float64) predicate.Group {
+	return predicate.Group(sql.FieldIn(FieldImagePrice4k, vs...))
+}
+
+// ImagePrice4kNotIn applies the NotIn predicate on the "image_price_4k" field.
+func ImagePrice4kNotIn(vs ...float64) predicate.Group {
+	return predicate.Group(sql.FieldNotIn(FieldImagePrice4k, vs...))
+}
+
+// ImagePrice4kGT applies the GT predicate on the "image_price_4k" field.
+func ImagePrice4kGT(v float64) predicate.Group {
+	return predicate.Group(sql.FieldGT(FieldImagePrice4k, v))
+}
+
+// ImagePrice4kGTE applies the GTE predicate on the "image_price_4k" field.
+func ImagePrice4kGTE(v float64) predicate.Group {
+	return predicate.Group(sql.FieldGTE(FieldImagePrice4k, v))
+}
+
+// ImagePrice4kLT applies the LT predicate on the "image_price_4k" field.
+func ImagePrice4kLT(v float64) predicate.Group {
+	return predicate.Group(sql.FieldLT(FieldImagePrice4k, v))
+}
+
+// ImagePrice4kLTE applies the LTE predicate on the "image_price_4k" field.
+func ImagePrice4kLTE(v float64) predicate.Group {
+	return predicate.Group(sql.FieldLTE(FieldImagePrice4k, v))
+}
+
+// ImagePrice4kIsNil applies the IsNil predicate on the "image_price_4k" field.
+func ImagePrice4kIsNil() predicate.Group {
+	return predicate.Group(sql.FieldIsNull(FieldImagePrice4k))
+}
+
+// ImagePrice4kNotNil applies the NotNil predicate on the "image_price_4k" field.
+func ImagePrice4kNotNil() predicate.Group {
+	return predicate.Group(sql.FieldNotNull(FieldImagePrice4k))
+}
+
 // HasAPIKeys applies the HasEdge predicate on the "api_keys" edge.
 func HasAPIKeys() predicate.Group {
 	return predicate.Group(func(s *sql.Selector) {

backend/ent/group_create.go

@@ -216,6 +216,48 @@ func (_c *GroupCreate) SetNillableDefaultValidityDays(v *int) *GroupCreate {
 	return _c
 }
 
+// SetImagePrice1k sets the "image_price_1k" field.
+func (_c *GroupCreate) SetImagePrice1k(v float64) *GroupCreate {
+	_c.mutation.SetImagePrice1k(v)
+	return _c
+}
+
+// SetNillableImagePrice1k sets the "image_price_1k" field if the given value is not nil.
+func (_c *GroupCreate) SetNillableImagePrice1k(v *float64) *GroupCreate {
+	if v != nil {
+		_c.SetImagePrice1k(*v)
+	}
+	return _c
+}
+
+// SetImagePrice2k sets the "image_price_2k" field.
+func (_c *GroupCreate) SetImagePrice2k(v float64) *GroupCreate {
+	_c.mutation.SetImagePrice2k(v)
+	return _c
+}
+
+// SetNillableImagePrice2k sets the "image_price_2k" field if the given value is not nil.
+func (_c *GroupCreate) SetNillableImagePrice2k(v *float64) *GroupCreate {
+	if v != nil {
+		_c.SetImagePrice2k(*v)
+	}
+	return _c
+}
+
+// SetImagePrice4k sets the "image_price_4k" field.
+func (_c *GroupCreate) SetImagePrice4k(v float64) *GroupCreate {
+	_c.mutation.SetImagePrice4k(v)
+	return _c
+}
+
+// SetNillableImagePrice4k sets the "image_price_4k" field if the given value is not nil.
+func (_c *GroupCreate) SetNillableImagePrice4k(v *float64) *GroupCreate {
+	if v != nil {
+		_c.SetImagePrice4k(*v)
+	}
+	return _c
+}
+
 // AddAPIKeyIDs adds the "api_keys" edge to the APIKey entity by IDs.
 func (_c *GroupCreate) AddAPIKeyIDs(ids ...int64) *GroupCreate {
 	_c.mutation.AddAPIKeyIDs(ids...)
@@ -516,6 +558,18 @@ func (_c *GroupCreate) createSpec() (*Group, *sqlgraph.CreateSpec) {
 		_spec.SetField(group.FieldDefaultValidityDays, field.TypeInt, value)
 		_node.DefaultValidityDays = value
 	}
+	if value, ok := _c.mutation.ImagePrice1k(); ok {
+		_spec.SetField(group.FieldImagePrice1k, field.TypeFloat64, value)
+		_node.ImagePrice1k = &value
+	}
+	if value, ok := _c.mutation.ImagePrice2k(); ok {
+		_spec.SetField(group.FieldImagePrice2k, field.TypeFloat64, value)
+		_node.ImagePrice2k = &value
+	}
+	if value, ok := _c.mutation.ImagePrice4k(); ok {
+		_spec.SetField(group.FieldImagePrice4k, field.TypeFloat64, value)
+		_node.ImagePrice4k = &value
+	}
 	if nodes := _c.mutation.APIKeysIDs(); len(nodes) > 0 {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.O2M,
@@ -888,6 +942,78 @@ func (u *GroupUpsert) AddDefaultValidityDays(v int) *GroupUpsert {
 	return u
 }
 
+// SetImagePrice1k sets the "image_price_1k" field.
+func (u *GroupUpsert) SetImagePrice1k(v float64) *GroupUpsert {
+	u.Set(group.FieldImagePrice1k, v)
+	return u
+}
+
+// UpdateImagePrice1k sets the "image_price_1k" field to the value that was provided on create.
+func (u *GroupUpsert) UpdateImagePrice1k() *GroupUpsert {
+	u.SetExcluded(group.FieldImagePrice1k)
+	return u
+}
+
+// AddImagePrice1k adds v to the "image_price_1k" field.
+func (u *GroupUpsert) AddImagePrice1k(v float64) *GroupUpsert {
+	u.Add(group.FieldImagePrice1k, v)
+	return u
+}
+
+// ClearImagePrice1k clears the value of the "image_price_1k" field.
+func (u *GroupUpsert) ClearImagePrice1k() *GroupUpsert {
+	u.SetNull(group.FieldImagePrice1k)
+	return u
+}
+
+// SetImagePrice2k sets the "image_price_2k" field.
+func (u *GroupUpsert) SetImagePrice2k(v float64) *GroupUpsert {
+	u.Set(group.FieldImagePrice2k, v)
+	return u
+}
+
+// UpdateImagePrice2k sets the "image_price_2k" field to the value that was provided on create.
+func (u *GroupUpsert) UpdateImagePrice2k() *GroupUpsert {
+	u.SetExcluded(group.FieldImagePrice2k)
+	return u
+}
+
+// AddImagePrice2k adds v to the "image_price_2k" field.
+func (u *GroupUpsert) AddImagePrice2k(v float64) *GroupUpsert {
+	u.Add(group.FieldImagePrice2k, v)
+	return u
+}
+
+// ClearImagePrice2k clears the value of the "image_price_2k" field.
+func (u *GroupUpsert) ClearImagePrice2k() *GroupUpsert {
+	u.SetNull(group.FieldImagePrice2k)
+	return u
+}
+
+// SetImagePrice4k sets the "image_price_4k" field.
+func (u *GroupUpsert) SetImagePrice4k(v float64) *GroupUpsert {
+	u.Set(group.FieldImagePrice4k, v)
+	return u
+}
+
+// UpdateImagePrice4k sets the "image_price_4k" field to the value that was provided on create.
+func (u *GroupUpsert) UpdateImagePrice4k() *GroupUpsert {
+	u.SetExcluded(group.FieldImagePrice4k)
+	return u
+}
+
+// AddImagePrice4k adds v to the "image_price_4k" field.
+func (u *GroupUpsert) AddImagePrice4k(v float64) *GroupUpsert {
+	u.Add(group.FieldImagePrice4k, v)
+	return u
+}
+
+// ClearImagePrice4k clears the value of the "image_price_4k" field.
+func (u *GroupUpsert) ClearImagePrice4k() *GroupUpsert {
+	u.SetNull(group.FieldImagePrice4k)
+	return u
+}
+
 // UpdateNewValues updates the mutable fields using the new values that were set on create.
 // Using this option is equivalent to using:
 //
@@ -1185,6 +1311,90 @@ func (u *GroupUpsertOne) UpdateDefaultValidityDays() *GroupUpsertOne {
 	})
 }
 
+// SetImagePrice1k sets the "image_price_1k" field.
+func (u *GroupUpsertOne) SetImagePrice1k(v float64) *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetImagePrice1k(v)
+	})
+}
+
+// AddImagePrice1k adds v to the "image_price_1k" field.
+func (u *GroupUpsertOne) AddImagePrice1k(v float64) *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.AddImagePrice1k(v)
+	})
+}
+
+// UpdateImagePrice1k sets the "image_price_1k" field to the value that was provided on create.
+func (u *GroupUpsertOne) UpdateImagePrice1k() *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateImagePrice1k()
+	})
+}
+
+// ClearImagePrice1k clears the value of the "image_price_1k" field.
+func (u *GroupUpsertOne) ClearImagePrice1k() *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.ClearImagePrice1k()
+	})
+}
+
+// SetImagePrice2k sets the "image_price_2k" field.
+func (u *GroupUpsertOne) SetImagePrice2k(v float64) *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetImagePrice2k(v)
+	})
+}
+
+// AddImagePrice2k adds v to the "image_price_2k" field.
+func (u *GroupUpsertOne) AddImagePrice2k(v float64) *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.AddImagePrice2k(v)
+	})
+}
+
+// UpdateImagePrice2k sets the "image_price_2k" field to the value that was provided on create.
+func (u *GroupUpsertOne) UpdateImagePrice2k() *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateImagePrice2k()
+	})
+}
+
+// ClearImagePrice2k clears the value of the "image_price_2k" field.
+func (u *GroupUpsertOne) ClearImagePrice2k() *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.ClearImagePrice2k()
+	})
+}
+
+// SetImagePrice4k sets the "image_price_4k" field.
+func (u *GroupUpsertOne) SetImagePrice4k(v float64) *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetImagePrice4k(v)
+	})
+}
+
+// AddImagePrice4k adds v to the "image_price_4k" field.
+func (u *GroupUpsertOne) AddImagePrice4k(v float64) *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.AddImagePrice4k(v)
+	})
+}
+
+// UpdateImagePrice4k sets the "image_price_4k" field to the value that was provided on create.
+func (u *GroupUpsertOne) UpdateImagePrice4k() *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateImagePrice4k()
+	})
+}
+
+// ClearImagePrice4k clears the value of the "image_price_4k" field.
+func (u *GroupUpsertOne) ClearImagePrice4k() *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.ClearImagePrice4k()
+	})
+}
+
 // Exec executes the query.
 func (u *GroupUpsertOne) Exec(ctx context.Context) error {
 	if len(u.create.conflict) == 0 {
@@ -1648,6 +1858,90 @@ func (u *GroupUpsertBulk) UpdateDefaultValidityDays() *GroupUpsertBulk {
 	})
 }
 
+// SetImagePrice1k sets the "image_price_1k" field.
+func (u *GroupUpsertBulk) SetImagePrice1k(v float64) *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetImagePrice1k(v)
+	})
+}
+
+// AddImagePrice1k adds v to the "image_price_1k" field.
+func (u *GroupUpsertBulk) AddImagePrice1k(v float64) *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.AddImagePrice1k(v)
+	})
+}
+
+// UpdateImagePrice1k sets the "image_price_1k" field to the value that was provided on create.
+func (u *GroupUpsertBulk) UpdateImagePrice1k() *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateImagePrice1k()
+	})
+}
+
+// ClearImagePrice1k clears the value of the "image_price_1k" field.
+func (u *GroupUpsertBulk) ClearImagePrice1k() *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.ClearImagePrice1k()
+	})
+}
+
+// SetImagePrice2k sets the "image_price_2k" field.
+func (u *GroupUpsertBulk) SetImagePrice2k(v float64) *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetImagePrice2k(v)
+	})
+}
+
+// AddImagePrice2k adds v to the "image_price_2k" field.
+func (u *GroupUpsertBulk) AddImagePrice2k(v float64) *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.AddImagePrice2k(v)
+	})
+}
+
+// UpdateImagePrice2k sets the "image_price_2k" field to the value that was provided on create.
+func (u *GroupUpsertBulk) UpdateImagePrice2k() *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateImagePrice2k()
+	})
+}
+
+// ClearImagePrice2k clears the value of the "image_price_2k" field.
+func (u *GroupUpsertBulk) ClearImagePrice2k() *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.ClearImagePrice2k()
+	})
+}
+
+// SetImagePrice4k sets the "image_price_4k" field.
+func (u *GroupUpsertBulk) SetImagePrice4k(v float64) *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetImagePrice4k(v)
+	})
+}
+
+// AddImagePrice4k adds v to the "image_price_4k" field.
+func (u *GroupUpsertBulk) AddImagePrice4k(v float64) *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.AddImagePrice4k(v)
+	})
+}
+
+// UpdateImagePrice4k sets the "image_price_4k" field to the value that was provided on create.
+func (u *GroupUpsertBulk) UpdateImagePrice4k() *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateImagePrice4k()
+	})
+}
+
+// ClearImagePrice4k clears the value of the "image_price_4k" field.
+func (u *GroupUpsertBulk) ClearImagePrice4k() *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.ClearImagePrice4k()
+	})
+}
+
 // Exec executes the query.
 func (u *GroupUpsertBulk) Exec(ctx context.Context) error {
 	if u.create.err != nil {

backend/ent/group_update.go

@@ -273,6 +273,87 @@ func (_u *GroupUpdate) AddDefaultValidityDays(v int) *GroupUpdate {
 	return _u
 }
 
+// SetImagePrice1k sets the "image_price_1k" field.
+func (_u *GroupUpdate) SetImagePrice1k(v float64) *GroupUpdate {
+	_u.mutation.ResetImagePrice1k()
+	_u.mutation.SetImagePrice1k(v)
+	return _u
+}
+
+// SetNillableImagePrice1k sets the "image_price_1k" field if the given value is not nil.
+func (_u *GroupUpdate) SetNillableImagePrice1k(v *float64) *GroupUpdate {
+	if v != nil {
+		_u.SetImagePrice1k(*v)
+	}
+	return _u
+}
+
+// AddImagePrice1k adds value to the "image_price_1k" field.
+func (_u *GroupUpdate) AddImagePrice1k(v float64) *GroupUpdate {
+	_u.mutation.AddImagePrice1k(v)
+	return _u
+}
+
+// ClearImagePrice1k clears the value of the "image_price_1k" field.
+func (_u *GroupUpdate) ClearImagePrice1k() *GroupUpdate {
+	_u.mutation.ClearImagePrice1k()
+	return _u
+}
+
+// SetImagePrice2k sets the "image_price_2k" field.
+func (_u *GroupUpdate) SetImagePrice2k(v float64) *GroupUpdate {
+	_u.mutation.ResetImagePrice2k()
+	_u.mutation.SetImagePrice2k(v)
+	return _u
+}
+
+// SetNillableImagePrice2k sets the "image_price_2k" field if the given value is not nil.
+func (_u *GroupUpdate) SetNillableImagePrice2k(v *float64) *GroupUpdate {
+	if v != nil {
+		_u.SetImagePrice2k(*v)
+	}
+	return _u
+}
+
+// AddImagePrice2k adds value to the "image_price_2k" field.
+func (_u *GroupUpdate) AddImagePrice2k(v float64) *GroupUpdate {
+	_u.mutation.AddImagePrice2k(v)
+	return _u
+}
+
+// ClearImagePrice2k clears the value of the "image_price_2k" field.
+func (_u *GroupUpdate) ClearImagePrice2k() *GroupUpdate {
+	_u.mutation.ClearImagePrice2k()
+	return _u
+}
+
+// SetImagePrice4k sets the "image_price_4k" field.
+func (_u *GroupUpdate) SetImagePrice4k(v float64) *GroupUpdate {
+	_u.mutation.ResetImagePrice4k()
+	_u.mutation.SetImagePrice4k(v)
+	return _u
+}
+
+// SetNillableImagePrice4k sets the "image_price_4k" field if the given value is not nil.
+func (_u *GroupUpdate) SetNillableImagePrice4k(v *float64) *GroupUpdate {
+	if v != nil {
+		_u.SetImagePrice4k(*v)
+	}
+	return _u
+}
+
+// AddImagePrice4k adds value to the "image_price_4k" field.
+func (_u *GroupUpdate) AddImagePrice4k(v float64) *GroupUpdate {
+	_u.mutation.AddImagePrice4k(v)
+	return _u
+}
+
+// ClearImagePrice4k clears the value of the "image_price_4k" field.
+func (_u *GroupUpdate) ClearImagePrice4k() *GroupUpdate {
+	_u.mutation.ClearImagePrice4k()
+	return _u
+}
+
 // AddAPIKeyIDs adds the "api_keys" edge to the APIKey entity by IDs.
 func (_u *GroupUpdate) AddAPIKeyIDs(ids ...int64) *GroupUpdate {
 	_u.mutation.AddAPIKeyIDs(ids...)
@@ -642,6 +723,33 @@ func (_u *GroupUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if value, ok := _u.mutation.AddedDefaultValidityDays(); ok {
 		_spec.AddField(group.FieldDefaultValidityDays, field.TypeInt, value)
 	}
+	if value, ok := _u.mutation.ImagePrice1k(); ok {
+		_spec.SetField(group.FieldImagePrice1k, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedImagePrice1k(); ok {
+		_spec.AddField(group.FieldImagePrice1k, field.TypeFloat64, value)
+	}
+	if _u.mutation.ImagePrice1kCleared() {
+		_spec.ClearField(group.FieldImagePrice1k, field.TypeFloat64)
+	}
+	if value, ok := _u.mutation.ImagePrice2k(); ok {
+		_spec.SetField(group.FieldImagePrice2k, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedImagePrice2k(); ok {
+		_spec.AddField(group.FieldImagePrice2k, field.TypeFloat64, value)
+	}
+	if _u.mutation.ImagePrice2kCleared() {
+		_spec.ClearField(group.FieldImagePrice2k, field.TypeFloat64)
+	}
+	if value, ok := _u.mutation.ImagePrice4k(); ok {
+		_spec.SetField(group.FieldImagePrice4k, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedImagePrice4k(); ok {
+		_spec.AddField(group.FieldImagePrice4k, field.TypeFloat64, value)
+	}
+	if _u.mutation.ImagePrice4kCleared() {
+		_spec.ClearField(group.FieldImagePrice4k, field.TypeFloat64)
+	}
 	if _u.mutation.APIKeysCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.O2M,
@@ -1195,6 +1303,87 @@ func (_u *GroupUpdateOne) AddDefaultValidityDays(v int) *GroupUpdateOne {
 	return _u
 }
 
+// SetImagePrice1k sets the "image_price_1k" field.
+func (_u *GroupUpdateOne) SetImagePrice1k(v float64) *GroupUpdateOne {
+	_u.mutation.ResetImagePrice1k()
+	_u.mutation.SetImagePrice1k(v)
+	return _u
+}
+
+// SetNillableImagePrice1k sets the "image_price_1k" field if the given value is not nil.
+func (_u *GroupUpdateOne) SetNillableImagePrice1k(v *float64) *GroupUpdateOne {
+	if v != nil {
+		_u.SetImagePrice1k(*v)
+	}
+	return _u
+}
+
+// AddImagePrice1k adds value to the "image_price_1k" field.
+func (_u *GroupUpdateOne) AddImagePrice1k(v float64) *GroupUpdateOne {
+	_u.mutation.AddImagePrice1k(v)
+	return _u
+}
+
+// ClearImagePrice1k clears the value of the "image_price_1k" field.
+func (_u *GroupUpdateOne) ClearImagePrice1k() *GroupUpdateOne {
+	_u.mutation.ClearImagePrice1k()
+	return _u
+}
+
+// SetImagePrice2k sets the "image_price_2k" field.
+func (_u *GroupUpdateOne) SetImagePrice2k(v float64) *GroupUpdateOne {
+	_u.mutation.ResetImagePrice2k()
+	_u.mutation.SetImagePrice2k(v)
+	return _u
+}
+
+// SetNillableImagePrice2k sets the "image_price_2k" field if the given value is not nil.
+func (_u *GroupUpdateOne) SetNillableImagePrice2k(v *float64) *GroupUpdateOne {
+	if v != nil {
+		_u.SetImagePrice2k(*v)
+	}
+	return _u
+}
+
+// AddImagePrice2k adds value to the "image_price_2k" field.
+func (_u *GroupUpdateOne) AddImagePrice2k(v float64) *GroupUpdateOne {
+	_u.mutation.AddImagePrice2k(v)
+	return _u
+}
+
+// ClearImagePrice2k clears the value of the "image_price_2k" field.
+func (_u *GroupUpdateOne) ClearImagePrice2k() *GroupUpdateOne {
+	_u.mutation.ClearImagePrice2k()
+	return _u
+}
+
+// SetImagePrice4k sets the "image_price_4k" field.
+func (_u *GroupUpdateOne) SetImagePrice4k(v float64) *GroupUpdateOne {
+	_u.mutation.ResetImagePrice4k()
+	_u.mutation.SetImagePrice4k(v)
+	return _u
+}
+
+// SetNillableImagePrice4k sets the "image_price_4k" field if the given value is not nil.
+func (_u *GroupUpdateOne) SetNillableImagePrice4k(v *float64) *GroupUpdateOne {
+	if v != nil {
+		_u.SetImagePrice4k(*v)
+	}
+	return _u
+}
+
+// AddImagePrice4k adds value to the "image_price_4k" field.
+func (_u *GroupUpdateOne) AddImagePrice4k(v float64) *GroupUpdateOne {
+	_u.mutation.AddImagePrice4k(v)
+	return _u
+}
+
+// ClearImagePrice4k clears the value of the "image_price_4k" field.
+func (_u *GroupUpdateOne) ClearImagePrice4k() *GroupUpdateOne {
+	_u.mutation.ClearImagePrice4k()
+	return _u
+}
+
 // AddAPIKeyIDs adds the "api_keys" edge to the APIKey entity by IDs.
 func (_u *GroupUpdateOne) AddAPIKeyIDs(ids ...int64) *GroupUpdateOne {
 	_u.mutation.AddAPIKeyIDs(ids...)
@@ -1594,6 +1783,33 @@ func (_u *GroupUpdateOne) sqlSave(ctx context.Context) (_node *Group, err error)
 	if value, ok := _u.mutation.AddedDefaultValidityDays(); ok {
 		_spec.AddField(group.FieldDefaultValidityDays, field.TypeInt, value)
 	}
+	if value, ok := _u.mutation.ImagePrice1k(); ok {
+		_spec.SetField(group.FieldImagePrice1k, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedImagePrice1k(); ok {
+		_spec.AddField(group.FieldImagePrice1k, field.TypeFloat64, value)
+	}
+	if _u.mutation.ImagePrice1kCleared() {
+		_spec.ClearField(group.FieldImagePrice1k, field.TypeFloat64)
+	}
+	if value, ok := _u.mutation.ImagePrice2k(); ok {
+		_spec.SetField(group.FieldImagePrice2k, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedImagePrice2k(); ok {
+		_spec.AddField(group.FieldImagePrice2k, field.TypeFloat64, value)
+	}
+	if _u.mutation.ImagePrice2kCleared() {
+		_spec.ClearField(group.FieldImagePrice2k, field.TypeFloat64)
+	}
+	if value, ok := _u.mutation.ImagePrice4k(); ok {
+		_spec.SetField(group.FieldImagePrice4k, field.TypeFloat64, value)
+	}
+	if value, ok := _u.mutation.AddedImagePrice4k(); ok {
+		_spec.AddField(group.FieldImagePrice4k, field.TypeFloat64, value)
+	}
+	if _u.mutation.ImagePrice4kCleared() {
+		_spec.ClearField(group.FieldImagePrice4k, field.TypeFloat64)
+	}
 	if _u.mutation.APIKeysCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.O2M,

backend/ent/migrate/schema.go

@@ -215,6 +215,9 @@ var (
 		{Name: "weekly_limit_usd", Type: field.TypeFloat64, Nullable: true, SchemaType: map[string]string{"postgres": "decimal(20,8)"}},
 		{Name: "monthly_limit_usd", Type: field.TypeFloat64, Nullable: true, SchemaType: map[string]string{"postgres": "decimal(20,8)"}},
 		{Name: "default_validity_days", Type: field.TypeInt, Default: 30},
+		{Name: "image_price_1k", Type: field.TypeFloat64, Nullable: true, SchemaType: map[string]string{"postgres": "decimal(20,8)"}},
+		{Name: "image_price_2k", Type: field.TypeFloat64, Nullable: true, SchemaType: map[string]string{"postgres": "decimal(20,8)"}},
+		{Name: "image_price_4k", Type: field.TypeFloat64, Nullable: true, SchemaType: map[string]string{"postgres": "decimal(20,8)"}},
 	}
 	// GroupsTable holds the schema information for the "groups" table.
 	GroupsTable = &schema.Table{
@@ -367,6 +370,8 @@ var (
 		{Name: "stream", Type: field.TypeBool, Default: false},
 		{Name: "duration_ms", Type: field.TypeInt, Nullable: true},
 		{Name: "first_token_ms", Type: field.TypeInt, Nullable: true},
+		{Name: "image_count", Type: field.TypeInt, Default: 0},
+		{Name: "image_size", Type: field.TypeString, Nullable: true, Size: 10},
 		{Name: "created_at", Type: field.TypeTime, SchemaType: map[string]string{"postgres": "timestamptz"}},
 		{Name: "api_key_id", Type: field.TypeInt64},
 		{Name: "account_id", Type: field.TypeInt64},
@@ -382,31 +387,31 @@ var (
 		ForeignKeys: []*schema.ForeignKey{
 			{
 				Symbol:     "usage_logs_api_keys_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[21]},
+				Columns:    []*schema.Column{UsageLogsColumns[23]},
 				RefColumns: []*schema.Column{APIKeysColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_accounts_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[22]},
+				Columns:    []*schema.Column{UsageLogsColumns[24]},
 				RefColumns: []*schema.Column{AccountsColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_groups_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[23]},
+				Columns:    []*schema.Column{UsageLogsColumns[25]},
 				RefColumns: []*schema.Column{GroupsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
 			{
 				Symbol:     "usage_logs_users_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[24]},
+				Columns:    []*schema.Column{UsageLogsColumns[26]},
 				RefColumns: []*schema.Column{UsersColumns[0]},
 				OnDelete:   schema.NoAction,
 			},
 			{
 				Symbol:     "usage_logs_user_subscriptions_usage_logs",
-				Columns:    []*schema.Column{UsageLogsColumns[25]},
+				Columns:    []*schema.Column{UsageLogsColumns[27]},
 				RefColumns: []*schema.Column{UserSubscriptionsColumns[0]},
 				OnDelete:   schema.SetNull,
 			},
@@ -415,32 +420,32 @@ var (
 			{
 				Name:    "usagelog_user_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[24]},
+				Columns: []*schema.Column{UsageLogsColumns[26]},
 			},
 			{
 				Name:    "usagelog_api_key_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[21]},
+				Columns: []*schema.Column{UsageLogsColumns[23]},
 			},
 			{
 				Name:    "usagelog_account_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[22]},
+				Columns: []*schema.Column{UsageLogsColumns[24]},
 			},
 			{
 				Name:    "usagelog_group_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[23]},
+				Columns: []*schema.Column{UsageLogsColumns[25]},
 			},
 			{
 				Name:    "usagelog_subscription_id",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[25]},
+				Columns: []*schema.Column{UsageLogsColumns[27]},
 			},
 			{
 				Name:    "usagelog_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[20]},
+				Columns: []*schema.Column{UsageLogsColumns[22]},
 			},
 			{
 				Name:    "usagelog_model",
@@ -455,12 +460,12 @@ var (
 			{
 				Name:    "usagelog_user_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[24], UsageLogsColumns[20]},
+				Columns: []*schema.Column{UsageLogsColumns[26], UsageLogsColumns[22]},
 			},
 			{
 				Name:    "usagelog_api_key_id_created_at",
 				Unique:  false,
-				Columns: []*schema.Column{UsageLogsColumns[21], UsageLogsColumns[20]},
+				Columns: []*schema.Column{UsageLogsColumns[23], UsageLogsColumns[22]},
 			},
 		},
 	}

backend/ent/runtime/runtime.go

@@ -521,8 +521,16 @@ func init() {
 	usagelogDescStream := usagelogFields[21].Descriptor()
 	// usagelog.DefaultStream holds the default value on creation for the stream field.
 	usagelog.DefaultStream = usagelogDescStream.Default.(bool)
+	// usagelogDescImageCount is the schema descriptor for image_count field.
+	usagelogDescImageCount := usagelogFields[24].Descriptor()
+	// usagelog.DefaultImageCount holds the default value on creation for the image_count field.
+	usagelog.DefaultImageCount = usagelogDescImageCount.Default.(int)
+	// usagelogDescImageSize is the schema descriptor for image_size field.
+	usagelogDescImageSize := usagelogFields[25].Descriptor()
+	// usagelog.ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
+	usagelog.ImageSizeValidator = usagelogDescImageSize.Validators[0].(func(string) error)
 	// usagelogDescCreatedAt is the schema descriptor for created_at field.
-	usagelogDescCreatedAt := usagelogFields[24].Descriptor()
+	usagelogDescCreatedAt := usagelogFields[26].Descriptor()
 	// usagelog.DefaultCreatedAt holds the default value on creation for the created_at field.
 	usagelog.DefaultCreatedAt = usagelogDescCreatedAt.Default.(func() time.Time)
 	userMixin := schema.User{}.Mixin()

backend/ent/schema/group.go

@@ -72,6 +72,20 @@ func (Group) Fields() []ent.Field {
 			SchemaType(map[string]string{dialect.Postgres: "decimal(20,8)"}),
 		field.Int("default_validity_days").
 			Default(30),
+
+		// 图片生成计费配置（antigravity 和 gemini 平台使用）
+		field.Float("image_price_1k").
+			Optional().
+			Nillable().
+			SchemaType(map[string]string{dialect.Postgres: "decimal(20,8)"}),
+		field.Float("image_price_2k").
+			Optional().
+			Nillable().
+			SchemaType(map[string]string{dialect.Postgres: "decimal(20,8)"}),
+		field.Float("image_price_4k").
+			Optional().
+			Nillable().
+			SchemaType(map[string]string{dialect.Postgres: "decimal(20,8)"}),
 	}
 }
 

backend/ent/schema/usage_log.go

@@ -97,6 +97,14 @@ func (UsageLog) Fields() []ent.Field {
 			Optional().
 			Nillable(),
 
+		// 图片生成字段（仅 gemini-3-pro-image 等图片模型使用）
+		field.Int("image_count").
+			Default(0),
+		field.String("image_size").
+			MaxLen(10).
+			Optional().
+			Nillable(),
+
 		// 时间戳（只有 created_at，日志不可修改）
 		field.Time("created_at").
 			Default(time.Now).

backend/ent/usagelog.go

@@ -70,6 +70,10 @@ type UsageLog struct {
 	DurationMs *int `json:"duration_ms,omitempty"`
 	// FirstTokenMs holds the value of the "first_token_ms" field.
 	FirstTokenMs *int `json:"first_token_ms,omitempty"`
+	// ImageCount holds the value of the "image_count" field.
+	ImageCount int `json:"image_count,omitempty"`
+	// ImageSize holds the value of the "image_size" field.
+	ImageSize *string `json:"image_size,omitempty"`
 	// CreatedAt holds the value of the "created_at" field.
 	CreatedAt time.Time `json:"created_at,omitempty"`
 	// Edges holds the relations/edges for other nodes in the graph.
@@ -159,9 +163,9 @@ func (*UsageLog) scanValues(columns []string) ([]any, error) {
 			values[i] = new(sql.NullBool)
 		case usagelog.FieldInputCost, usagelog.FieldOutputCost, usagelog.FieldCacheCreationCost, usagelog.FieldCacheReadCost, usagelog.FieldTotalCost, usagelog.FieldActualCost, usagelog.FieldRateMultiplier:
 			values[i] = new(sql.NullFloat64)
-		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs:
+		case usagelog.FieldID, usagelog.FieldUserID, usagelog.FieldAPIKeyID, usagelog.FieldAccountID, usagelog.FieldGroupID, usagelog.FieldSubscriptionID, usagelog.FieldInputTokens, usagelog.FieldOutputTokens, usagelog.FieldCacheCreationTokens, usagelog.FieldCacheReadTokens, usagelog.FieldCacheCreation5mTokens, usagelog.FieldCacheCreation1hTokens, usagelog.FieldBillingType, usagelog.FieldDurationMs, usagelog.FieldFirstTokenMs, usagelog.FieldImageCount:
 			values[i] = new(sql.NullInt64)
-		case usagelog.FieldRequestID, usagelog.FieldModel:
+		case usagelog.FieldRequestID, usagelog.FieldModel, usagelog.FieldImageSize:
 			values[i] = new(sql.NullString)
 		case usagelog.FieldCreatedAt:
 			values[i] = new(sql.NullTime)
@@ -334,6 +338,19 @@ func (_m *UsageLog) assignValues(columns []string, values []any) error {
 				_m.FirstTokenMs = new(int)
 				*_m.FirstTokenMs = int(value.Int64)
 			}
+		case usagelog.FieldImageCount:
+			if value, ok := values[i].(*sql.NullInt64); !ok {
+				return fmt.Errorf("unexpected type %T for field image_count", values[i])
+			} else if value.Valid {
+				_m.ImageCount = int(value.Int64)
+			}
+		case usagelog.FieldImageSize:
+			if value, ok := values[i].(*sql.NullString); !ok {
+				return fmt.Errorf("unexpected type %T for field image_size", values[i])
+			} else if value.Valid {
+				_m.ImageSize = new(string)
+				*_m.ImageSize = value.String
+			}
 		case usagelog.FieldCreatedAt:
 			if value, ok := values[i].(*sql.NullTime); !ok {
 				return fmt.Errorf("unexpected type %T for field created_at", values[i])
@@ -481,6 +498,14 @@ func (_m *UsageLog) String() string {
 		builder.WriteString(fmt.Sprintf("%v", *v))
 	}
 	builder.WriteString(", ")
+	builder.WriteString("image_count=")
+	builder.WriteString(fmt.Sprintf("%v", _m.ImageCount))
+	builder.WriteString(", ")
+	if v := _m.ImageSize; v != nil {
+		builder.WriteString("image_size=")
+		builder.WriteString(*v)
+	}
+	builder.WriteString(", ")
 	builder.WriteString("created_at=")
 	builder.WriteString(_m.CreatedAt.Format(time.ANSIC))
 	builder.WriteByte(')')

backend/ent/usagelog/usagelog.go

@@ -62,6 +62,10 @@ const (
 	FieldDurationMs = "duration_ms"
 	// FieldFirstTokenMs holds the string denoting the first_token_ms field in the database.
 	FieldFirstTokenMs = "first_token_ms"
+	// FieldImageCount holds the string denoting the image_count field in the database.
+	FieldImageCount = "image_count"
+	// FieldImageSize holds the string denoting the image_size field in the database.
+	FieldImageSize = "image_size"
 	// FieldCreatedAt holds the string denoting the created_at field in the database.
 	FieldCreatedAt = "created_at"
 	// EdgeUser holds the string denoting the user edge name in mutations.
@@ -140,6 +144,8 @@ var Columns = []string{
 	FieldStream,
 	FieldDurationMs,
 	FieldFirstTokenMs,
+	FieldImageCount,
+	FieldImageSize,
 	FieldCreatedAt,
 }
 
@@ -188,6 +194,10 @@ var (
 	DefaultBillingType int8
 	// DefaultStream holds the default value on creation for the "stream" field.
 	DefaultStream bool
+	// DefaultImageCount holds the default value on creation for the "image_count" field.
+	DefaultImageCount int
+	// ImageSizeValidator is a validator for the "image_size" field. It is called by the builders before save.
+	ImageSizeValidator func(string) error
 	// DefaultCreatedAt holds the default value on creation for the "created_at" field.
 	DefaultCreatedAt func() time.Time
 )
@@ -320,6 +330,16 @@ func ByFirstTokenMs(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldFirstTokenMs, opts...).ToFunc()
 }
 
+// ByImageCount orders the results by the image_count field.
+func ByImageCount(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImageCount, opts...).ToFunc()
+}
+
+// ByImageSize orders the results by the image_size field.
+func ByImageSize(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldImageSize, opts...).ToFunc()
+}
+
 // ByCreatedAt orders the results by the created_at field.
 func ByCreatedAt(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldCreatedAt, opts...).ToFunc()

backend/ent/usagelog/where.go

@@ -175,6 +175,16 @@ func FirstTokenMs(v int) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldFirstTokenMs, v))
 }
 
+// ImageCount applies equality check predicate on the "image_count" field. It's identical to ImageCountEQ.
+func ImageCount(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageCount, v))
+}
+
+// ImageSize applies equality check predicate on the "image_size" field. It's identical to ImageSizeEQ.
+func ImageSize(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageSize, v))
+}
+
 // CreatedAt applies equality check predicate on the "created_at" field. It's identical to CreatedAtEQ.
 func CreatedAt(v time.Time) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldCreatedAt, v))
@@ -1100,6 +1110,121 @@ func FirstTokenMsNotNil() predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldNotNull(FieldFirstTokenMs))
 }
 
+// ImageCountEQ applies the EQ predicate on the "image_count" field.
+func ImageCountEQ(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageCount, v))
+}
+
+// ImageCountNEQ applies the NEQ predicate on the "image_count" field.
+func ImageCountNEQ(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldImageCount, v))
+}
+
+// ImageCountIn applies the In predicate on the "image_count" field.
+func ImageCountIn(vs ...int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldImageCount, vs...))
+}
+
+// ImageCountNotIn applies the NotIn predicate on the "image_count" field.
+func ImageCountNotIn(vs ...int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldImageCount, vs...))
+}
+
+// ImageCountGT applies the GT predicate on the "image_count" field.
+func ImageCountGT(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldImageCount, v))
+}
+
+// ImageCountGTE applies the GTE predicate on the "image_count" field.
+func ImageCountGTE(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldImageCount, v))
+}
+
+// ImageCountLT applies the LT predicate on the "image_count" field.
+func ImageCountLT(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldImageCount, v))
+}
+
+// ImageCountLTE applies the LTE predicate on the "image_count" field.
+func ImageCountLTE(v int) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldImageCount, v))
+}
+
+// ImageSizeEQ applies the EQ predicate on the "image_size" field.
+func ImageSizeEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEQ(FieldImageSize, v))
+}
+
+// ImageSizeNEQ applies the NEQ predicate on the "image_size" field.
+func ImageSizeNEQ(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNEQ(FieldImageSize, v))
+}
+
+// ImageSizeIn applies the In predicate on the "image_size" field.
+func ImageSizeIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIn(FieldImageSize, vs...))
+}
+
+// ImageSizeNotIn applies the NotIn predicate on the "image_size" field.
+func ImageSizeNotIn(vs ...string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotIn(FieldImageSize, vs...))
+}
+
+// ImageSizeGT applies the GT predicate on the "image_size" field.
+func ImageSizeGT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGT(FieldImageSize, v))
+}
+
+// ImageSizeGTE applies the GTE predicate on the "image_size" field.
+func ImageSizeGTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldGTE(FieldImageSize, v))
+}
+
+// ImageSizeLT applies the LT predicate on the "image_size" field.
+func ImageSizeLT(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLT(FieldImageSize, v))
+}
+
+// ImageSizeLTE applies the LTE predicate on the "image_size" field.
+func ImageSizeLTE(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldLTE(FieldImageSize, v))
+}
+
+// ImageSizeContains applies the Contains predicate on the "image_size" field.
+func ImageSizeContains(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContains(FieldImageSize, v))
+}
+
+// ImageSizeHasPrefix applies the HasPrefix predicate on the "image_size" field.
+func ImageSizeHasPrefix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasPrefix(FieldImageSize, v))
+}
+
+// ImageSizeHasSuffix applies the HasSuffix predicate on the "image_size" field.
+func ImageSizeHasSuffix(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldHasSuffix(FieldImageSize, v))
+}
+
+// ImageSizeIsNil applies the IsNil predicate on the "image_size" field.
+func ImageSizeIsNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldIsNull(FieldImageSize))
+}
+
+// ImageSizeNotNil applies the NotNil predicate on the "image_size" field.
+func ImageSizeNotNil() predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldNotNull(FieldImageSize))
+}
+
+// ImageSizeEqualFold applies the EqualFold predicate on the "image_size" field.
+func ImageSizeEqualFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldEqualFold(FieldImageSize, v))
+}
+
+// ImageSizeContainsFold applies the ContainsFold predicate on the "image_size" field.
+func ImageSizeContainsFold(v string) predicate.UsageLog {
+	return predicate.UsageLog(sql.FieldContainsFold(FieldImageSize, v))
+}
+
 // CreatedAtEQ applies the EQ predicate on the "created_at" field.
 func CreatedAtEQ(v time.Time) predicate.UsageLog {
 	return predicate.UsageLog(sql.FieldEQ(FieldCreatedAt, v))

backend/ent/usagelog_create.go

@@ -323,6 +323,34 @@ func (_c *UsageLogCreate) SetNillableFirstTokenMs(v *int) *UsageLogCreate {
 	return _c
 }
 
+// SetImageCount sets the "image_count" field.
+func (_c *UsageLogCreate) SetImageCount(v int) *UsageLogCreate {
+	_c.mutation.SetImageCount(v)
+	return _c
+}
+
+// SetNillableImageCount sets the "image_count" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableImageCount(v *int) *UsageLogCreate {
+	if v != nil {
+		_c.SetImageCount(*v)
+	}
+	return _c
+}
+
+// SetImageSize sets the "image_size" field.
+func (_c *UsageLogCreate) SetImageSize(v string) *UsageLogCreate {
+	_c.mutation.SetImageSize(v)
+	return _c
+}
+
+// SetNillableImageSize sets the "image_size" field if the given value is not nil.
+func (_c *UsageLogCreate) SetNillableImageSize(v *string) *UsageLogCreate {
+	if v != nil {
+		_c.SetImageSize(*v)
+	}
+	return _c
+}
+
 // SetCreatedAt sets the "created_at" field.
 func (_c *UsageLogCreate) SetCreatedAt(v time.Time) *UsageLogCreate {
 	_c.mutation.SetCreatedAt(v)
@@ -457,6 +485,10 @@ func (_c *UsageLogCreate) defaults() {
 		v := usagelog.DefaultStream
 		_c.mutation.SetStream(v)
 	}
+	if _, ok := _c.mutation.ImageCount(); !ok {
+		v := usagelog.DefaultImageCount
+		_c.mutation.SetImageCount(v)
+	}
 	if _, ok := _c.mutation.CreatedAt(); !ok {
 		v := usagelog.DefaultCreatedAt()
 		_c.mutation.SetCreatedAt(v)
@@ -535,6 +567,14 @@ func (_c *UsageLogCreate) check() error {
 	if _, ok := _c.mutation.Stream(); !ok {
 		return &ValidationError{Name: "stream", err: errors.New(`ent: missing required field "UsageLog.stream"`)}
 	}
+	if _, ok := _c.mutation.ImageCount(); !ok {
+		return &ValidationError{Name: "image_count", err: errors.New(`ent: missing required field "UsageLog.image_count"`)}
+	}
+	if v, ok := _c.mutation.ImageSize(); ok {
+		if err := usagelog.ImageSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
+		}
+	}
 	if _, ok := _c.mutation.CreatedAt(); !ok {
 		return &ValidationError{Name: "created_at", err: errors.New(`ent: missing required field "UsageLog.created_at"`)}
 	}
@@ -650,6 +690,14 @@ func (_c *UsageLogCreate) createSpec() (*UsageLog, *sqlgraph.CreateSpec) {
 		_spec.SetField(usagelog.FieldFirstTokenMs, field.TypeInt, value)
 		_node.FirstTokenMs = &value
 	}
+	if value, ok := _c.mutation.ImageCount(); ok {
+		_spec.SetField(usagelog.FieldImageCount, field.TypeInt, value)
+		_node.ImageCount = value
+	}
+	if value, ok := _c.mutation.ImageSize(); ok {
+		_spec.SetField(usagelog.FieldImageSize, field.TypeString, value)
+		_node.ImageSize = &value
+	}
 	if value, ok := _c.mutation.CreatedAt(); ok {
 		_spec.SetField(usagelog.FieldCreatedAt, field.TypeTime, value)
 		_node.CreatedAt = value
@@ -1199,6 +1247,42 @@ func (u *UsageLogUpsert) ClearFirstTokenMs() *UsageLogUpsert {
 	return u
 }
 
+// SetImageCount sets the "image_count" field.
+func (u *UsageLogUpsert) SetImageCount(v int) *UsageLogUpsert {
+	u.Set(usagelog.FieldImageCount, v)
+	return u
+}
+
+// UpdateImageCount sets the "image_count" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateImageCount() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldImageCount)
+	return u
+}
+
+// AddImageCount adds v to the "image_count" field.
+func (u *UsageLogUpsert) AddImageCount(v int) *UsageLogUpsert {
+	u.Add(usagelog.FieldImageCount, v)
+	return u
+}
+
+// SetImageSize sets the "image_size" field.
+func (u *UsageLogUpsert) SetImageSize(v string) *UsageLogUpsert {
+	u.Set(usagelog.FieldImageSize, v)
+	return u
+}
+
+// UpdateImageSize sets the "image_size" field to the value that was provided on create.
+func (u *UsageLogUpsert) UpdateImageSize() *UsageLogUpsert {
+	u.SetExcluded(usagelog.FieldImageSize)
+	return u
+}
+
+// ClearImageSize clears the value of the "image_size" field.
+func (u *UsageLogUpsert) ClearImageSize() *UsageLogUpsert {
+	u.SetNull(usagelog.FieldImageSize)
+	return u
+}
+
 // UpdateNewValues updates the mutable fields using the new values that were set on create.
 // Using this option is equivalent to using:
 //
@@ -1720,6 +1804,48 @@ func (u *UsageLogUpsertOne) ClearFirstTokenMs() *UsageLogUpsertOne {
 	})
 }
 
+// SetImageCount sets the "image_count" field.
+func (u *UsageLogUpsertOne) SetImageCount(v int) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageCount(v)
+	})
+}
+
+// AddImageCount adds v to the "image_count" field.
+func (u *UsageLogUpsertOne) AddImageCount(v int) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddImageCount(v)
+	})
+}
+
+// UpdateImageCount sets the "image_count" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateImageCount() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageCount()
+	})
+}
+
+// SetImageSize sets the "image_size" field.
+func (u *UsageLogUpsertOne) SetImageSize(v string) *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageSize(v)
+	})
+}
+
+// UpdateImageSize sets the "image_size" field to the value that was provided on create.
+func (u *UsageLogUpsertOne) UpdateImageSize() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageSize()
+	})
+}
+
+// ClearImageSize clears the value of the "image_size" field.
+func (u *UsageLogUpsertOne) ClearImageSize() *UsageLogUpsertOne {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageSize()
+	})
+}
+
 // Exec executes the query.
 func (u *UsageLogUpsertOne) Exec(ctx context.Context) error {
 	if len(u.create.conflict) == 0 {
@@ -2407,6 +2533,48 @@ func (u *UsageLogUpsertBulk) ClearFirstTokenMs() *UsageLogUpsertBulk {
 	})
 }
 
+// SetImageCount sets the "image_count" field.
+func (u *UsageLogUpsertBulk) SetImageCount(v int) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageCount(v)
+	})
+}
+
+// AddImageCount adds v to the "image_count" field.
+func (u *UsageLogUpsertBulk) AddImageCount(v int) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.AddImageCount(v)
+	})
+}
+
+// UpdateImageCount sets the "image_count" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateImageCount() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageCount()
+	})
+}
+
+// SetImageSize sets the "image_size" field.
+func (u *UsageLogUpsertBulk) SetImageSize(v string) *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.SetImageSize(v)
+	})
+}
+
+// UpdateImageSize sets the "image_size" field to the value that was provided on create.
+func (u *UsageLogUpsertBulk) UpdateImageSize() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.UpdateImageSize()
+	})
+}
+
+// ClearImageSize clears the value of the "image_size" field.
+func (u *UsageLogUpsertBulk) ClearImageSize() *UsageLogUpsertBulk {
+	return u.Update(func(s *UsageLogUpsert) {
+		s.ClearImageSize()
+	})
+}
+
 // Exec executes the query.
 func (u *UsageLogUpsertBulk) Exec(ctx context.Context) error {
 	if u.create.err != nil {

backend/ent/usagelog_update.go

@@ -504,6 +504,47 @@ func (_u *UsageLogUpdate) ClearFirstTokenMs() *UsageLogUpdate {
 	return _u
 }
 
+// SetImageCount sets the "image_count" field.
+func (_u *UsageLogUpdate) SetImageCount(v int) *UsageLogUpdate {
+	_u.mutation.ResetImageCount()
+	_u.mutation.SetImageCount(v)
+	return _u
+}
+
+// SetNillableImageCount sets the "image_count" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableImageCount(v *int) *UsageLogUpdate {
+	if v != nil {
+		_u.SetImageCount(*v)
+	}
+	return _u
+}
+
+// AddImageCount adds value to the "image_count" field.
+func (_u *UsageLogUpdate) AddImageCount(v int) *UsageLogUpdate {
+	_u.mutation.AddImageCount(v)
+	return _u
+}
+
+// SetImageSize sets the "image_size" field.
+func (_u *UsageLogUpdate) SetImageSize(v string) *UsageLogUpdate {
+	_u.mutation.SetImageSize(v)
+	return _u
+}
+
+// SetNillableImageSize sets the "image_size" field if the given value is not nil.
+func (_u *UsageLogUpdate) SetNillableImageSize(v *string) *UsageLogUpdate {
+	if v != nil {
+		_u.SetImageSize(*v)
+	}
+	return _u
+}
+
+// ClearImageSize clears the value of the "image_size" field.
+func (_u *UsageLogUpdate) ClearImageSize() *UsageLogUpdate {
+	_u.mutation.ClearImageSize()
+	return _u
+}
+
 // SetUser sets the "user" edge to the User entity.
 func (_u *UsageLogUpdate) SetUser(v *User) *UsageLogUpdate {
 	return _u.SetUserID(v.ID)
@@ -603,6 +644,11 @@ func (_u *UsageLogUpdate) check() error {
 			return &ValidationError{Name: "model", err: fmt.Errorf(`ent: validator failed for field "UsageLog.model": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.ImageSize(); ok {
+		if err := usagelog.ImageSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
+		}
+	}
 	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
 		return errors.New(`ent: clearing a required unique edge "UsageLog.user"`)
 	}
@@ -738,6 +784,18 @@ func (_u *UsageLogUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if _u.mutation.FirstTokenMsCleared() {
 		_spec.ClearField(usagelog.FieldFirstTokenMs, field.TypeInt)
 	}
+	if value, ok := _u.mutation.ImageCount(); ok {
+		_spec.SetField(usagelog.FieldImageCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedImageCount(); ok {
+		_spec.AddField(usagelog.FieldImageCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.ImageSize(); ok {
+		_spec.SetField(usagelog.FieldImageSize, field.TypeString, value)
+	}
+	if _u.mutation.ImageSizeCleared() {
+		_spec.ClearField(usagelog.FieldImageSize, field.TypeString)
+	}
 	if _u.mutation.UserCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.M2O,
@@ -1375,6 +1433,47 @@ func (_u *UsageLogUpdateOne) ClearFirstTokenMs() *UsageLogUpdateOne {
 	return _u
 }
 
+// SetImageCount sets the "image_count" field.
+func (_u *UsageLogUpdateOne) SetImageCount(v int) *UsageLogUpdateOne {
+	_u.mutation.ResetImageCount()
+	_u.mutation.SetImageCount(v)
+	return _u
+}
+
+// SetNillableImageCount sets the "image_count" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableImageCount(v *int) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetImageCount(*v)
+	}
+	return _u
+}
+
+// AddImageCount adds value to the "image_count" field.
+func (_u *UsageLogUpdateOne) AddImageCount(v int) *UsageLogUpdateOne {
+	_u.mutation.AddImageCount(v)
+	return _u
+}
+
+// SetImageSize sets the "image_size" field.
+func (_u *UsageLogUpdateOne) SetImageSize(v string) *UsageLogUpdateOne {
+	_u.mutation.SetImageSize(v)
+	return _u
+}
+
+// SetNillableImageSize sets the "image_size" field if the given value is not nil.
+func (_u *UsageLogUpdateOne) SetNillableImageSize(v *string) *UsageLogUpdateOne {
+	if v != nil {
+		_u.SetImageSize(*v)
+	}
+	return _u
+}
+
+// ClearImageSize clears the value of the "image_size" field.
+func (_u *UsageLogUpdateOne) ClearImageSize() *UsageLogUpdateOne {
+	_u.mutation.ClearImageSize()
+	return _u
+}
+
 // SetUser sets the "user" edge to the User entity.
 func (_u *UsageLogUpdateOne) SetUser(v *User) *UsageLogUpdateOne {
 	return _u.SetUserID(v.ID)
@@ -1487,6 +1586,11 @@ func (_u *UsageLogUpdateOne) check() error {
 			return &ValidationError{Name: "model", err: fmt.Errorf(`ent: validator failed for field "UsageLog.model": %w`, err)}
 		}
 	}
+	if v, ok := _u.mutation.ImageSize(); ok {
+		if err := usagelog.ImageSizeValidator(v); err != nil {
+			return &ValidationError{Name: "image_size", err: fmt.Errorf(`ent: validator failed for field "UsageLog.image_size": %w`, err)}
+		}
+	}
 	if _u.mutation.UserCleared() && len(_u.mutation.UserIDs()) > 0 {
 		return errors.New(`ent: clearing a required unique edge "UsageLog.user"`)
 	}
@@ -1639,6 +1743,18 @@ func (_u *UsageLogUpdateOne) sqlSave(ctx context.Context) (_node *UsageLog, err
 	if _u.mutation.FirstTokenMsCleared() {
 		_spec.ClearField(usagelog.FieldFirstTokenMs, field.TypeInt)
 	}
+	if value, ok := _u.mutation.ImageCount(); ok {
+		_spec.SetField(usagelog.FieldImageCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.AddedImageCount(); ok {
+		_spec.AddField(usagelog.FieldImageCount, field.TypeInt, value)
+	}
+	if value, ok := _u.mutation.ImageSize(); ok {
+		_spec.SetField(usagelog.FieldImageSize, field.TypeString, value)
+	}
+	if _u.mutation.ImageSizeCleared() {
+		_spec.ClearField(usagelog.FieldImageSize, field.TypeString)
+	}
 	if _u.mutation.UserCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.M2O,

backend/internal/handler/admin/group_handler.go

@@ -33,6 +33,10 @@ type CreateGroupRequest struct {
 	DailyLimitUSD    *float64 `json:"daily_limit_usd"`
 	WeeklyLimitUSD   *float64 `json:"weekly_limit_usd"`
 	MonthlyLimitUSD  *float64 `json:"monthly_limit_usd"`
+	// 图片生成计费配置（仅 antigravity 平台使用）
+	ImagePrice1K *float64 `json:"image_price_1k"`
+	ImagePrice2K *float64 `json:"image_price_2k"`
+	ImagePrice4K *float64 `json:"image_price_4k"`
 }
 
 // UpdateGroupRequest represents update group request
@@ -47,6 +51,10 @@ type UpdateGroupRequest struct {
 	DailyLimitUSD    *float64 `json:"daily_limit_usd"`
 	WeeklyLimitUSD   *float64 `json:"weekly_limit_usd"`
 	MonthlyLimitUSD  *float64 `json:"monthly_limit_usd"`
+	// 图片生成计费配置（仅 antigravity 平台使用）
+	ImagePrice1K *float64 `json:"image_price_1k"`
+	ImagePrice2K *float64 `json:"image_price_2k"`
+	ImagePrice4K *float64 `json:"image_price_4k"`
 }
 
 // List handles listing all groups with pagination
@@ -139,6 +147,9 @@ func (h *GroupHandler) Create(c *gin.Context) {
 		DailyLimitUSD:    req.DailyLimitUSD,
 		WeeklyLimitUSD:   req.WeeklyLimitUSD,
 		MonthlyLimitUSD:  req.MonthlyLimitUSD,
+		ImagePrice1K:     req.ImagePrice1K,
+		ImagePrice2K:     req.ImagePrice2K,
+		ImagePrice4K:     req.ImagePrice4K,
 	})
 	if err != nil {
 		response.ErrorFrom(c, err)
@@ -174,6 +185,9 @@ func (h *GroupHandler) Update(c *gin.Context) {
 		DailyLimitUSD:    req.DailyLimitUSD,
 		WeeklyLimitUSD:   req.WeeklyLimitUSD,
 		MonthlyLimitUSD:  req.MonthlyLimitUSD,
+		ImagePrice1K:     req.ImagePrice1K,
+		ImagePrice2K:     req.ImagePrice2K,
+		ImagePrice4K:     req.ImagePrice4K,
 	})
 	if err != nil {
 		response.ErrorFrom(c, err)

backend/internal/handler/dto/mappers.go

@@ -78,6 +78,9 @@ func GroupFromServiceShallow(g *service.Group) *Group {
 		DailyLimitUSD:    g.DailyLimitUSD,
 		WeeklyLimitUSD:   g.WeeklyLimitUSD,
 		MonthlyLimitUSD:  g.MonthlyLimitUSD,
+		ImagePrice1K:     g.ImagePrice1K,
+		ImagePrice2K:     g.ImagePrice2K,
+		ImagePrice4K:     g.ImagePrice4K,
 		CreatedAt:        g.CreatedAt,
 		UpdatedAt:        g.UpdatedAt,
 		AccountCount:     g.AccountCount,
@@ -246,6 +249,8 @@ func UsageLogFromService(l *service.UsageLog) *UsageLog {
 		Stream:                l.Stream,
 		DurationMs:            l.DurationMs,
 		FirstTokenMs:          l.FirstTokenMs,
+		ImageCount:            l.ImageCount,
+		ImageSize:             l.ImageSize,
 		CreatedAt:             l.CreatedAt,
 		User:                  UserFromServiceShallow(l.User),
 		APIKey:                APIKeyFromService(l.APIKey),

backend/internal/handler/dto/types.go

@@ -47,6 +47,11 @@ type Group struct {
 	WeeklyLimitUSD   *float64 `json:"weekly_limit_usd"`
 	MonthlyLimitUSD  *float64 `json:"monthly_limit_usd"`
 
+	// 图片生成计费配置（仅 antigravity 平台使用）
+	ImagePrice1K *float64 `json:"image_price_1k"`
+	ImagePrice2K *float64 `json:"image_price_2k"`
+	ImagePrice4K *float64 `json:"image_price_4k"`
+
 	CreatedAt time.Time `json:"created_at"`
 	UpdatedAt time.Time `json:"updated_at"`
 
@@ -168,6 +173,10 @@ type UsageLog struct {
 	DurationMs   *int `json:"duration_ms"`
 	FirstTokenMs *int `json:"first_token_ms"`
 
+	// 图片生成字段
+	ImageCount int     `json:"image_count"`
+	ImageSize  *string `json:"image_size"`
+
 	CreatedAt time.Time `json:"created_at"`
 
 	User         *User             `json:"user,omitempty"`

backend/internal/pkg/antigravity/gemini_types.go

@@ -67,6 +67,13 @@ type GeminiGenerationConfig struct {
 	TopK            *int                  `json:"topK,omitempty"`
 	ThinkingConfig  *GeminiThinkingConfig `json:"thinkingConfig,omitempty"`
 	StopSequences   []string              `json:"stopSequences,omitempty"`
+	ImageConfig     *GeminiImageConfig    `json:"imageConfig,omitempty"`
+}
+
+// GeminiImageConfig Gemini 图片生成配置（仅 gemini-3-pro-image 支持）
+type GeminiImageConfig struct {
+	AspectRatio string `json:"aspectRatio,omitempty"` // "1:1", "16:9", "9:16", "4:3", "3:4"
+	ImageSize   string `json:"imageSize,omitempty"`   // "1K", "2K", "4K"
 }
 
 // GeminiThinkingConfig Gemini thinking 配置

backend/internal/repository/api_key_repo.go

@@ -321,6 +321,9 @@ func groupEntityToService(g *dbent.Group) *service.Group {
 		DailyLimitUSD:       g.DailyLimitUsd,
 		WeeklyLimitUSD:      g.WeeklyLimitUsd,
 		MonthlyLimitUSD:     g.MonthlyLimitUsd,
+		ImagePrice1K:        g.ImagePrice1k,
+		ImagePrice2K:        g.ImagePrice2k,
+		ImagePrice4K:        g.ImagePrice4k,
 		DefaultValidityDays: g.DefaultValidityDays,
 		CreatedAt:           g.CreatedAt,
 		UpdatedAt:           g.UpdatedAt,