feat(api-key): 添加 IP 白名单/黑名单限制功能 (#221)

* feat(api-key): add IP whitelist/blacklist restriction and usage log IP tracking

- Add IP restriction feature for API keys (whitelist/blacklist with CIDR support)
- Add IP address logging to usage logs (admin-only visibility)
- Remove billing_type column from usage logs UI (redundant)
- Use generic "Access denied" error message for security

Backend:
- New ip package with IP/CIDR validation and matching utilities
- Database migrations for ip_whitelist, ip_blacklist (api_keys) and ip_address (usage_logs)
- Middleware IP restriction check after API key validation
- Input validation for IP/CIDR patterns on create/update

Frontend:
- API key form with enable toggle for IP restriction
- Shield icon indicator in table for keys with IP restriction
- Removed billing_type filter and column from usage views

* fix: update API contract tests for ip_whitelist/ip_blacklist fields

Add ip_whitelist and ip_blacklist fields to expected JSON responses
in API contract tests to match the new API key schema.

backend/ent/apikey_create.go

@@ -113,6 +113,18 @@ func (_c *APIKeyCreate) SetNillableStatus(v *string) *APIKeyCreate {
 	return _c
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (_c *APIKeyCreate) SetIPWhitelist(v []string) *APIKeyCreate {
+	_c.mutation.SetIPWhitelist(v)
+	return _c
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (_c *APIKeyCreate) SetIPBlacklist(v []string) *APIKeyCreate {
+	_c.mutation.SetIPBlacklist(v)
+	return _c
+}
+
 // SetUser sets the "user" edge to the User entity.
 func (_c *APIKeyCreate) SetUser(v *User) *APIKeyCreate {
 	return _c.SetUserID(v.ID)
@@ -285,6 +297,14 @@ func (_c *APIKeyCreate) createSpec() (*APIKey, *sqlgraph.CreateSpec) {
 		_spec.SetField(apikey.FieldStatus, field.TypeString, value)
 		_node.Status = value
 	}
+	if value, ok := _c.mutation.IPWhitelist(); ok {
+		_spec.SetField(apikey.FieldIPWhitelist, field.TypeJSON, value)
+		_node.IPWhitelist = value
+	}
+	if value, ok := _c.mutation.IPBlacklist(); ok {
+		_spec.SetField(apikey.FieldIPBlacklist, field.TypeJSON, value)
+		_node.IPBlacklist = value
+	}
 	if nodes := _c.mutation.UserIDs(); len(nodes) > 0 {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.M2O,
@@ -483,6 +503,42 @@ func (u *APIKeyUpsert) UpdateStatus() *APIKeyUpsert {
 	return u
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (u *APIKeyUpsert) SetIPWhitelist(v []string) *APIKeyUpsert {
+	u.Set(apikey.FieldIPWhitelist, v)
+	return u
+}
+
+// UpdateIPWhitelist sets the "ip_whitelist" field to the value that was provided on create.
+func (u *APIKeyUpsert) UpdateIPWhitelist() *APIKeyUpsert {
+	u.SetExcluded(apikey.FieldIPWhitelist)
+	return u
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (u *APIKeyUpsert) ClearIPWhitelist() *APIKeyUpsert {
+	u.SetNull(apikey.FieldIPWhitelist)
+	return u
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (u *APIKeyUpsert) SetIPBlacklist(v []string) *APIKeyUpsert {
+	u.Set(apikey.FieldIPBlacklist, v)
+	return u
+}
+
+// UpdateIPBlacklist sets the "ip_blacklist" field to the value that was provided on create.
+func (u *APIKeyUpsert) UpdateIPBlacklist() *APIKeyUpsert {
+	u.SetExcluded(apikey.FieldIPBlacklist)
+	return u
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (u *APIKeyUpsert) ClearIPBlacklist() *APIKeyUpsert {
+	u.SetNull(apikey.FieldIPBlacklist)
+	return u
+}
+
 // UpdateNewValues updates the mutable fields using the new values that were set on create.
 // Using this option is equivalent to using:
 //
@@ -640,6 +696,48 @@ func (u *APIKeyUpsertOne) UpdateStatus() *APIKeyUpsertOne {
 	})
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (u *APIKeyUpsertOne) SetIPWhitelist(v []string) *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPWhitelist(v)
+	})
+}
+
+// UpdateIPWhitelist sets the "ip_whitelist" field to the value that was provided on create.
+func (u *APIKeyUpsertOne) UpdateIPWhitelist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPWhitelist()
+	})
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (u *APIKeyUpsertOne) ClearIPWhitelist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPWhitelist()
+	})
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (u *APIKeyUpsertOne) SetIPBlacklist(v []string) *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPBlacklist(v)
+	})
+}
+
+// UpdateIPBlacklist sets the "ip_blacklist" field to the value that was provided on create.
+func (u *APIKeyUpsertOne) UpdateIPBlacklist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPBlacklist()
+	})
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (u *APIKeyUpsertOne) ClearIPBlacklist() *APIKeyUpsertOne {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPBlacklist()
+	})
+}
+
 // Exec executes the query.
 func (u *APIKeyUpsertOne) Exec(ctx context.Context) error {
 	if len(u.create.conflict) == 0 {
@@ -963,6 +1061,48 @@ func (u *APIKeyUpsertBulk) UpdateStatus() *APIKeyUpsertBulk {
 	})
 }
 
+// SetIPWhitelist sets the "ip_whitelist" field.
+func (u *APIKeyUpsertBulk) SetIPWhitelist(v []string) *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPWhitelist(v)
+	})
+}
+
+// UpdateIPWhitelist sets the "ip_whitelist" field to the value that was provided on create.
+func (u *APIKeyUpsertBulk) UpdateIPWhitelist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPWhitelist()
+	})
+}
+
+// ClearIPWhitelist clears the value of the "ip_whitelist" field.
+func (u *APIKeyUpsertBulk) ClearIPWhitelist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPWhitelist()
+	})
+}
+
+// SetIPBlacklist sets the "ip_blacklist" field.
+func (u *APIKeyUpsertBulk) SetIPBlacklist(v []string) *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.SetIPBlacklist(v)
+	})
+}
+
+// UpdateIPBlacklist sets the "ip_blacklist" field to the value that was provided on create.
+func (u *APIKeyUpsertBulk) UpdateIPBlacklist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.UpdateIPBlacklist()
+	})
+}
+
+// ClearIPBlacklist clears the value of the "ip_blacklist" field.
+func (u *APIKeyUpsertBulk) ClearIPBlacklist() *APIKeyUpsertBulk {
+	return u.Update(func(s *APIKeyUpsert) {
+		s.ClearIPBlacklist()
+	})
+}
+
 // Exec executes the query.
 func (u *APIKeyUpsertBulk) Exec(ctx context.Context) error {
 	if u.create.err != nil {