✨ feat: Add prefill group management system for models

- Add new PrefillGroup model with CRUD operations
  * Support for model, tag, and endpoint group types
  * JSON storage for group items with GORM datatypes
  * Automatic database migration support

- Implement backend API endpoints
  * GET /api/prefill_group - List groups by type with admin auth
  * POST /api/prefill_group - Create new groups
  * PUT /api/prefill_group - Update existing groups
  * DELETE /api/prefill_group/:id - Delete groups

- Add comprehensive frontend management interface
  * PrefillGroupManagement component for group listing
  * EditPrefillGroupModal for group creation/editing
  * Integration with EditModelModal for auto-filling
  * Responsive design with CardTable and SideSheet

- Enhance model editing workflow
  * Tag group selection with auto-fill functionality
  * Endpoint group selection with auto-fill functionality
  * Seamless integration with existing model forms

- Create reusable UI components
  * Extract common rendering utilities to models/ui/
  * Shared renderLimitedItems and renderDescription functions
  * Consistent styling across all model-related components

- Improve user experience
  * Empty state illustrations matching existing patterns
  * Fixed column positioning for operation buttons
  * Item content display with +x indicators for overflow
  * Tooltip support for long descriptions

model/main.go

@@ -252,6 +252,7 @@ func migrateDB() error {
 		&Task{},
 		&Model{},
 		&Vendor{},
+		&PrefillGroup{},
 		&Setup{},
 	)
 	if err != nil {
@@ -280,6 +281,7 @@ func migrateDBFast() error {
 		{&Task{}, "Task"},
 		{&Model{}, "Model"},
         {&Vendor{}, "Vendor"},
+		{&PrefillGroup{}, "PrefillGroup"},
 		{&Setup{}, "Setup"},
 	}
 	// 动态计算migration数量，确保errChan缓冲区足够大

model/prefill_group.go

@@ -0,0 +1,56 @@
+package model
+
+import (
+    "one-api/common"
+
+    "gorm.io/datatypes"
+)
+
+// PrefillGroup 用于存储可复用的“组”信息，例如模型组、标签组、端点组等。
+// Name 字段保持唯一，用于在前端下拉框中展示。
+// Type 字段用于区分组的类别，可选值如：model、tag、endpoint。
+// Items 字段使用 JSON 数组保存对应类型的字符串集合，示例：
+// ["gpt-4o", "gpt-3.5-turbo"]
+// 设计遵循 3NF，避免冗余，提供灵活扩展能力。
+
+type PrefillGroup struct {
+    Id          int            `json:"id"`
+    Name        string         `json:"name" gorm:"uniqueIndex;size:64;not null"`
+    Type        string         `json:"type" gorm:"size:32;index;not null"`
+    Items       datatypes.JSON `json:"items" gorm:"type:json"`
+    Description string         `json:"description,omitempty" gorm:"type:varchar(255)"`
+    CreatedTime int64          `json:"created_time" gorm:"bigint"`
+    UpdatedTime int64          `json:"updated_time" gorm:"bigint"`
+}
+
+// Insert 新建组
+func (g *PrefillGroup) Insert() error {
+    now := common.GetTimestamp()
+    g.CreatedTime = now
+    g.UpdatedTime = now
+    return DB.Create(g).Error
+}
+
+// Update 更新组
+func (g *PrefillGroup) Update() error {
+    g.UpdatedTime = common.GetTimestamp()
+    return DB.Save(g).Error
+}
+
+// DeleteByID 根据 ID 删除组
+func DeletePrefillGroupByID(id int) error {
+    return DB.Delete(&PrefillGroup{}, id).Error
+}
+
+// GetAllPrefillGroups 获取全部组，可按类型过滤（为空则返回全部）
+func GetAllPrefillGroups(groupType string) ([]*PrefillGroup, error) {
+    var groups []*PrefillGroup
+    query := DB.Model(&PrefillGroup{})
+    if groupType != "" {
+        query = query.Where("type = ?", groupType)
+    }
+    if err := query.Order("updated_time DESC").Find(&groups).Error; err != nil {
+        return nil, err
+    }
+    return groups, nil
+}