Initial commit: MyCrib API in Go

Complete rewrite of Django REST API to Go with:
- Gin web framework for HTTP routing
- GORM for database operations
- GoAdmin for admin panel
- Gorush integration for push notifications
- Redis for caching and job queues

Features implemented:
- User authentication (login, register, logout, password reset)
- Residence management (CRUD, sharing, share codes)
- Task management (CRUD, kanban board, completions)
- Contractor management (CRUD, specialties)
- Document management (CRUD, warranties)
- Notifications (preferences, push notifications)
- Subscription management (tiers, limits)

Infrastructure:
- Docker Compose for local development
- Database migrations and seed data
- Admin panel for data management

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

internal/models/base.go

@@ -0,0 +1,38 @@
+package models
+
+import (
+	"time"
+
+	"gorm.io/gorm"
+)
+
+// BaseModel contains common columns for all tables with ID, CreatedAt, UpdatedAt
+type BaseModel struct {
+	ID        uint           `gorm:"primaryKey" json:"id"`
+	CreatedAt time.Time      `json:"created_at"`
+	UpdatedAt time.Time      `json:"updated_at"`
+}
+
+// SoftDeleteModel extends BaseModel with soft delete support
+type SoftDeleteModel struct {
+	BaseModel
+	DeletedAt gorm.DeletedAt `gorm:"index" json:"-"`
+}
+
+// BeforeCreate sets timestamps before creating a record
+func (b *BaseModel) BeforeCreate(tx *gorm.DB) error {
+	now := time.Now().UTC()
+	if b.CreatedAt.IsZero() {
+		b.CreatedAt = now
+	}
+	if b.UpdatedAt.IsZero() {
+		b.UpdatedAt = now
+	}
+	return nil
+}
+
+// BeforeUpdate sets updated_at before updating a record
+func (b *BaseModel) BeforeUpdate(tx *gorm.DB) error {
+	b.UpdatedAt = time.Now().UTC()
+	return nil
+}