refactor: remove PaymentChannel, reuse upstream Channel with features field

- Delete payment_channels table and PaymentChannel Ent schema
- Add `features` column to upstream channels table (migration 095)
- Add Features field to Channel struct, input types, handler request/response
- Payment user/admin handlers now use ChannelService directly
- Remove Channel CRUD from PaymentConfigService and admin payment routes
- Remove "渠道管理" tab from admin orders page (use /admin/channels)

backend/ent/client.go

@@ -333,10 +333,10 @@ func (c *Client) Use(hooks ...Hook) {
 	for _, n := range []interface{ Use(...Hook) }{
 		c.APIKey, c.Account, c.AccountGroup, c.Announcement, c.AnnouncementRead,
 		c.ErrorPassthroughRule, c.Group, c.IdempotencyRecord, c.PaymentAuditLog,
-		c.PaymentOrder, c.PaymentProviderInstance, c.PromoCode, c.PromoCodeUsage,
-		c.Proxy, c.RedeemCode, c.SecuritySecret, c.Setting, c.SubscriptionPlan,
-		c.TLSFingerprintProfile, c.UsageCleanupTask, c.UsageLog, c.User,
-		c.UserAllowedGroup, c.UserAttributeDefinition, c.UserAttributeValue,
+		c.PaymentOrder, c.PaymentProviderInstance, c.PromoCode,
+		c.PromoCodeUsage, c.Proxy, c.RedeemCode, c.SecuritySecret, c.Setting,
+		c.SubscriptionPlan, c.TLSFingerprintProfile, c.UsageCleanupTask, c.UsageLog,
+		c.User, c.UserAllowedGroup, c.UserAttributeDefinition, c.UserAttributeValue,
 		c.UserSubscription,
 	} {
 		n.Use(hooks...)
@@ -349,10 +349,10 @@ func (c *Client) Intercept(interceptors ...Interceptor) {
 	for _, n := range []interface{ Intercept(...Interceptor) }{
 		c.APIKey, c.Account, c.AccountGroup, c.Announcement, c.AnnouncementRead,
 		c.ErrorPassthroughRule, c.Group, c.IdempotencyRecord, c.PaymentAuditLog,
-		c.PaymentOrder, c.PaymentProviderInstance, c.PromoCode, c.PromoCodeUsage,
-		c.Proxy, c.RedeemCode, c.SecuritySecret, c.Setting, c.SubscriptionPlan,
-		c.TLSFingerprintProfile, c.UsageCleanupTask, c.UsageLog, c.User,
-		c.UserAllowedGroup, c.UserAttributeDefinition, c.UserAttributeValue,
+		c.PaymentOrder, c.PaymentProviderInstance, c.PromoCode,
+		c.PromoCodeUsage, c.Proxy, c.RedeemCode, c.SecuritySecret, c.Setting,
+		c.SubscriptionPlan, c.TLSFingerprintProfile, c.UsageCleanupTask, c.UsageLog,
+		c.User, c.UserAllowedGroup, c.UserAttributeDefinition, c.UserAttributeValue,
 		c.UserSubscription,
 	} {
 		n.Intercept(interceptors...)
@@ -4629,19 +4629,19 @@ func (c *UserSubscriptionClient) mutate(ctx context.Context, m *UserSubscription
 type (
 	hooks struct {
 		APIKey, Account, AccountGroup, Announcement, AnnouncementRead,
-		ErrorPassthroughRule, Group, IdempotencyRecord, PaymentAuditLog, PaymentOrder,
-		PaymentProviderInstance, PromoCode, PromoCodeUsage, Proxy, RedeemCode,
-		SecuritySecret, Setting, SubscriptionPlan, TLSFingerprintProfile,
-		UsageCleanupTask, UsageLog, User, UserAllowedGroup, UserAttributeDefinition,
-		UserAttributeValue, UserSubscription []ent.Hook
+		ErrorPassthroughRule, Group, IdempotencyRecord, PaymentAuditLog,
+		PaymentOrder, PaymentProviderInstance, PromoCode,
+		PromoCodeUsage, Proxy, RedeemCode, SecuritySecret, Setting, SubscriptionPlan,
+		TLSFingerprintProfile, UsageCleanupTask, UsageLog, User, UserAllowedGroup,
+		UserAttributeDefinition, UserAttributeValue, UserSubscription []ent.Hook
 	}
 	inters struct {
 		APIKey, Account, AccountGroup, Announcement, AnnouncementRead,
-		ErrorPassthroughRule, Group, IdempotencyRecord, PaymentAuditLog, PaymentOrder,
-		PaymentProviderInstance, PromoCode, PromoCodeUsage, Proxy, RedeemCode,
-		SecuritySecret, Setting, SubscriptionPlan, TLSFingerprintProfile,
-		UsageCleanupTask, UsageLog, User, UserAllowedGroup, UserAttributeDefinition,
-		UserAttributeValue, UserSubscription []ent.Interceptor
+		ErrorPassthroughRule, Group, IdempotencyRecord, PaymentAuditLog,
+		PaymentOrder, PaymentProviderInstance, PromoCode,
+		PromoCodeUsage, Proxy, RedeemCode, SecuritySecret, Setting, SubscriptionPlan,
+		TLSFingerprintProfile, UsageCleanupTask, UsageLog, User, UserAllowedGroup,
+		UserAttributeDefinition, UserAttributeValue, UserSubscription []ent.Interceptor
 	}
 )
 

backend/ent/intercept/intercept.go

@@ -336,6 +336,7 @@ func (f TraversePaymentAuditLog) Traverse(ctx context.Context, q ent.Query) erro
 	return fmt.Errorf("unexpected query type %T. expect *ent.PaymentAuditLogQuery", q)
 }
 
+
 // The PaymentOrderFunc type is an adapter to allow the use of ordinary function as a Querier.
 type PaymentOrderFunc func(context.Context, *ent.PaymentOrderQuery) (ent.Value, error)
 

backend/ent/predicate/predicate.go

@@ -33,6 +33,7 @@ type IdempotencyRecord func(*sql.Selector)
 // PaymentAuditLog is the predicate function for paymentauditlog builders.
 type PaymentAuditLog func(*sql.Selector)
 
+
 // PaymentOrder is the predicate function for paymentorder builders.
 type PaymentOrder func(*sql.Selector)