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/handlers/residence_handler.go

@@ -6,12 +6,12 @@ import (
 
 	"github.com/labstack/echo/v4"
 
-	"github.com/treytartt/casera-api/internal/apperrors"
-	"github.com/treytartt/casera-api/internal/dto/requests"
-	"github.com/treytartt/casera-api/internal/i18n"
-	"github.com/treytartt/casera-api/internal/middleware"
-	"github.com/treytartt/casera-api/internal/services"
-	"github.com/treytartt/casera-api/internal/validator"
+	"github.com/treytartt/honeydue-api/internal/apperrors"
+	"github.com/treytartt/honeydue-api/internal/dto/requests"
+	"github.com/treytartt/honeydue-api/internal/i18n"
+	"github.com/treytartt/honeydue-api/internal/middleware"
+	"github.com/treytartt/honeydue-api/internal/services"
+	"github.com/treytartt/honeydue-api/internal/validator"
 )
 
 // ResidenceHandler handles residence-related HTTP requests
@@ -221,7 +221,7 @@ func (h *ResidenceHandler) GenerateShareCode(c echo.Context) error {
 }
 
 // GenerateSharePackage handles POST /api/residences/:id/generate-share-package/
-// Returns a share code with metadata for creating a .casera package file
+// Returns a share code with metadata for creating a .honeydue package file
 func (h *ResidenceHandler) GenerateSharePackage(c echo.Context) error {
 	user, err := middleware.MustGetAuthUser(c)
 	if err != nil {