Rebrand from Casera/MyCrib to honeyDue

Total rebrand across all Go API source files:
- Go module path: casera-api -> honeydue-api
- All imports updated (130+ files)
- Docker: containers, images, networks renamed
- Email templates: support email, noreply, icon URL
- Domains: casera.app/mycrib.treytartt.com -> honeyDue.treytartt.com
- Bundle IDs: com.tt.casera -> com.tt.honeyDue
- IAP product IDs updated
- Landing page, admin panel, config defaults
- Seeds, CI workflows, Makefile, docs
- Database table names preserved (no migration needed)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

internal/services/stripe_service.go

@@ -13,9 +13,9 @@ import (
 	"github.com/stripe/stripe-go/v81/customer"
 	"github.com/stripe/stripe-go/v81/webhook"
 
-	"github.com/treytartt/casera-api/internal/apperrors"
-	"github.com/treytartt/casera-api/internal/models"
-	"github.com/treytartt/casera-api/internal/repositories"
+	"github.com/treytartt/honeydue-api/internal/apperrors"
+	"github.com/treytartt/honeydue-api/internal/models"
+	"github.com/treytartt/honeydue-api/internal/repositories"
 )
 
 // StripeService handles Stripe checkout, portal, and webhook processing
@@ -412,7 +412,7 @@ func (s *StripeService) getOrCreateStripeCustomer(sub *models.UserSubscription,
 		Email: stripe.String(user.Email),
 		Name:  stripe.String(user.GetFullName()),
 	}
-	params.AddMetadata("casera_user_id", fmt.Sprintf("%d", user.ID))
+	params.AddMetadata("honeydue_user_id", fmt.Sprintf("%d", user.ID))
 
 	c, err := customer.New(params)
 	if err != nil {