feat(provider): add google project and location fields

Add support for Google Cloud-specific configuration in provider models.
New fields `GoogleProject` and `GoogleLocation` are now included in the
Provider DTO, database model, API handlers, and sync service snapshots.

- Extend Provider struct in model with gorm/json tags
- Update ProviderDTO with omitempty JSON tags
- Include fields in handler create/update logic with trim
- Add fields to providerSnapshot for sync operations

internal/api/handler.go

@@ -58,15 +58,17 @@ func (h *Handler) CreateProvider(c *gin.Context) {
 	}
 
 	provider := model.Provider{
-		Name:      req.Name,
+		Name:           req.Name,
-		Type:      req.Type,
+		Type:           req.Type,
-		BaseURL:   req.BaseURL,
+		BaseURL:        req.BaseURL,
-		APIKey:    req.APIKey,
+		APIKey:         req.APIKey,
-		Group:     group,
+		GoogleProject:  strings.TrimSpace(req.GoogleProject),
-		Models:    strings.Join(req.Models, ","),
+		GoogleLocation: strings.TrimSpace(req.GoogleLocation),
-		Status:    status,
+		Group:          group,
-		AutoBan:   autoBan,
+		Models:         strings.Join(req.Models, ","),
-		BanReason: req.BanReason,
+		Status:         status,
+		AutoBan:        autoBan,
+		BanReason:      req.BanReason,
 	}
 	if !req.BanUntil.IsZero() {
 		tu := req.BanUntil.UTC()
@@ -133,6 +135,12 @@ func (h *Handler) UpdateProvider(c *gin.Context) {
 	if req.APIKey != "" {
 		update["api_key"] = req.APIKey
 	}
+	if strings.TrimSpace(req.GoogleProject) != "" {
+		update["google_project"] = strings.TrimSpace(req.GoogleProject)
+	}
+	if strings.TrimSpace(req.GoogleLocation) != "" {
+		update["google_location"] = strings.TrimSpace(req.GoogleLocation)
+	}
 	if req.Models != nil {
 		update["models"] = strings.Join(req.Models, ",")
 	}

internal/dto/provider.go

@@ -4,16 +4,18 @@ import "time"
 
 // ProviderDTO defines inbound payload for provider creation/update.
 type ProviderDTO struct {
-	Name      string    `json:"name"`
+	Name           string    `json:"name"`
-	Type      string    `json:"type"`
+	Type           string    `json:"type"`
-	BaseURL   string    `json:"base_url"`
+	BaseURL        string    `json:"base_url"`
-	APIKey    string    `json:"api_key"`
+	APIKey         string    `json:"api_key"`
-	Group     string    `json:"group"`
+	GoogleProject  string    `json:"google_project,omitempty"`
-	Models    []string  `json:"models"` // List of supported model names
+	GoogleLocation string    `json:"google_location,omitempty"`
-	Status    string    `json:"status"`
+	Group          string    `json:"group"`
-	AutoBan   *bool     `json:"auto_ban,omitempty"`
+	Models         []string  `json:"models"` // List of supported model names
-	BanReason string    `json:"ban_reason,omitempty"`
+	Status         string    `json:"status"`
-	BanUntil  time.Time `json:"ban_until,omitempty"`
+	AutoBan        *bool     `json:"auto_ban,omitempty"`
+	BanReason      string    `json:"ban_reason,omitempty"`
+	BanUntil       time.Time `json:"ban_until,omitempty"`
 
 	// Optional control params
 	SkipRouting bool `json:"skip_routing,omitempty"` // if true, do not add to routing tables (e.g., disabled)

internal/model/models.go

@@ -36,16 +36,18 @@ type Key struct {
 // Provider remains the same.
 type Provider struct {
 	gorm.Model
-	Name      string     `gorm:"not null" json:"name"`
+	Name           string     `gorm:"not null" json:"name"`
-	Type      string     `gorm:"not null" json:"type"` // openai, anthropic, etc.
+	Type           string     `gorm:"not null" json:"type"` // openai, anthropic, etc.
-	BaseURL   string     `json:"base_url"`
+	BaseURL        string     `json:"base_url"`
-	APIKey    string     `json:"api_key"`
+	APIKey         string     `json:"api_key"`
-	Group     string     `gorm:"default:'default'" json:"group"`         // routing group/tier
+	GoogleProject  string     `gorm:"size:128" json:"google_project,omitempty"`
-	Models    string     `json:"models"`                                 // comma-separated list of supported models (e.g. "gpt-4,gpt-3.5-turbo")
+	GoogleLocation string     `gorm:"size:64" json:"google_location,omitempty"`
-	Status    string     `gorm:"size:50;default:'active'" json:"status"` // active, auto_disabled, manual_disabled
+	Group          string     `gorm:"default:'default'" json:"group"`         // routing group/tier
-	AutoBan   bool       `gorm:"default:true" json:"auto_ban"`           // whether DP-triggered disable is allowed
+	Models         string     `json:"models"`                                 // comma-separated list of supported models (e.g. "gpt-4,gpt-3.5-turbo")
-	BanReason string     `gorm:"size:255" json:"ban_reason"`             // reason for current disable
+	Status         string     `gorm:"size:50;default:'active'" json:"status"` // active, auto_disabled, manual_disabled
-	BanUntil  *time.Time `json:"ban_until"`                              // optional TTL for disable
+	AutoBan        bool       `gorm:"default:true" json:"auto_ban"`           // whether DP-triggered disable is allowed
+	BanReason      string     `gorm:"size:255" json:"ban_reason"`             // reason for current disable
+	BanUntil       *time.Time `json:"ban_until"`                              // optional TTL for disable
 }
 
 // Model remains the same.

internal/service/sync.go

@@ -66,16 +66,18 @@ func (s *SyncService) SyncProvider(provider *model.Provider) error {
 	models := strings.Split(provider.Models, ",")
 
 	snap := providerSnapshot{
-		ID:        provider.ID,
+		ID:             provider.ID,
-		Name:      provider.Name,
+		Name:           provider.Name,
-		Type:      provider.Type,
+		Type:           provider.Type,
-		BaseURL:   provider.BaseURL,
+		BaseURL:        provider.BaseURL,
-		APIKey:    provider.APIKey,
+		APIKey:         provider.APIKey,
-		Group:     group,
+		GoogleProject:  provider.GoogleProject,
-		Models:    models,
+		GoogleLocation: provider.GoogleLocation,
-		Status:    normalizeStatus(provider.Status),
+		Group:          group,
-		AutoBan:   provider.AutoBan,
+		Models:         models,
-		BanReason: provider.BanReason,
+		Status:         normalizeStatus(provider.Status),
+		AutoBan:        provider.AutoBan,
+		BanReason:      provider.BanReason,
 	}
 	if provider.BanUntil != nil {
 		snap.BanUntil = provider.BanUntil.UTC().Unix()
@@ -124,17 +126,19 @@ func (s *SyncService) SyncModel(m *model.Model) error {
 }
 
 type providerSnapshot struct {
-	ID        uint     `json:"id"`
+	ID             uint     `json:"id"`
-	Name      string   `json:"name"`
+	Name           string   `json:"name"`
-	Type      string   `json:"type"`
+	Type           string   `json:"type"`
-	BaseURL   string   `json:"base_url"`
+	BaseURL        string   `json:"base_url"`
-	APIKey    string   `json:"api_key"`
+	APIKey         string   `json:"api_key"`
-	Group     string   `json:"group"`
+	GoogleProject  string   `json:"google_project,omitempty"`
-	Models    []string `json:"models"`
+	GoogleLocation string   `json:"google_location,omitempty"`
-	Status    string   `json:"status"`
+	Group          string   `json:"group"`
-	AutoBan   bool     `json:"auto_ban"`
+	Models         []string `json:"models"`
-	BanReason string   `json:"ban_reason,omitempty"`
+	Status         string   `json:"status"`
-	BanUntil  int64    `json:"ban_until,omitempty"` // unix seconds
+	AutoBan        bool     `json:"auto_ban"`
+	BanReason      string   `json:"ban_reason,omitempty"`
+	BanUntil       int64    `json:"ban_until,omitempty"` // unix seconds
 }
 
 // keySnapshot is no longer needed as we write directly to auth:token:*
@@ -198,16 +202,18 @@ func (s *SyncService) SyncAll(db *gorm.DB) error {
 		models := strings.Split(p.Models, ",")
 
 		snap := providerSnapshot{
-			ID:        p.ID,
+			ID:             p.ID,
-			Name:      p.Name,
+			Name:           p.Name,
-			Type:      p.Type,
+			Type:           p.Type,
-			BaseURL:   p.BaseURL,
+			BaseURL:        p.BaseURL,
-			APIKey:    p.APIKey,
+			APIKey:         p.APIKey,
-			Group:     group,
+			GoogleProject:  p.GoogleProject,
-			Models:    models,
+			GoogleLocation: p.GoogleLocation,
-			Status:    normalizeStatus(p.Status),
+			Group:          group,
-			AutoBan:   p.AutoBan,
+			Models:         models,
-			BanReason: p.BanReason,
+			Status:         normalizeStatus(p.Status),
+			AutoBan:        p.AutoBan,
+			BanReason:      p.BanReason,
 		}
 		if p.BanUntil != nil {
 			snap.BanUntil = p.BanUntil.UTC().Unix()