Initial commit: dating app backend (Go/Gin/GORM/Postgres)

Phone+OTP auth, staged onboarding, admin approval workflow, and a
full discovery/swipe/match/chat system with photo upload and
approximate distance (haversine) based on user location.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/repository/photo_repository.go

@@ -0,0 +1,52 @@
+package repository
+
+import (
+	"gorm.io/gorm"
+
+	"dating-app/internal/models"
+)
+
+type PhotoRepository struct {
+	db *gorm.DB
+}
+
+func NewPhotoRepository(db *gorm.DB) *PhotoRepository {
+	return &PhotoRepository{db: db}
+}
+
+func (r *PhotoRepository) ListByUser(userID uint) ([]models.Photo, error) {
+	var photos []models.Photo
+	err := r.db.Where("user_id = ?", userID).Order("sort_order asc, id asc").Find(&photos).Error
+	return photos, err
+}
+
+func (r *PhotoRepository) ListByUserIDs(userIDs []uint) ([]models.Photo, error) {
+	var photos []models.Photo
+	if len(userIDs) == 0 {
+		return photos, nil
+	}
+	err := r.db.Where("user_id IN ?", userIDs).Order("sort_order asc, id asc").Find(&photos).Error
+	return photos, err
+}
+
+func (r *PhotoRepository) CountByUser(userID uint) (int64, error) {
+	var count int64
+	err := r.db.Model(&models.Photo{}).Where("user_id = ?", userID).Count(&count).Error
+	return count, err
+}
+
+func (r *PhotoRepository) Create(photo *models.Photo) error {
+	return r.db.Create(photo).Error
+}
+
+func (r *PhotoRepository) FindByID(id uint) (*models.Photo, error) {
+	var photo models.Photo
+	if err := r.db.First(&photo, id).Error; err != nil {
+		return nil, err
+	}
+	return &photo, nil
+}
+
+func (r *PhotoRepository) Delete(id uint) error {
+	return r.db.Delete(&models.Photo{}, id).Error
+}