refactor: upgrade to Go 1.26 and modernize code idioms

- Replace `interface{}` with `any` type alias across all packages
- Use built-in `min()`/`max()` for parameter clamping
- Use `slices.SortFunc`, `slices.Min`, `slices.Max` for cleaner code
- Use `strings.Cut()` for simpler string parsing in auth middleware
- Use `errors.Is()` for proper error comparison in handlers
- Update dependencies: golang.org/x/image 0.37.0 -> 0.38.0
- Add Wire code generation guidelines to ARCHITECTURE.md
- Disable Go cache in CI build workflow

internal/repository/device_token_repo.go

@@ -125,7 +125,7 @@ func (r *deviceTokenRepository) Upsert(token *model.DeviceToken) error {
 	}
 
 	// 更新现有记录
-	return r.db.Model(&existing).Updates(map[string]interface{}{
+	return r.db.Model(&existing).Updates(map[string]any{
 		"push_token":   token.PushToken,
 		"is_active":    true,
 		"device_name":  token.DeviceName,
@@ -151,7 +151,7 @@ func (r *deviceTokenRepository) Deactivate(deviceID string) error {
 func (r *deviceTokenRepository) Activate(deviceID string) error {
 	return r.db.Model(&model.DeviceToken{}).
 		Where("device_id = ?", deviceID).
-		Updates(map[string]interface{}{
+		Updates(map[string]any{
 			"is_active":    true,
 			"last_used_at": time.Now(),
 		}).Error