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/pdf_service.go

@@ -165,7 +165,7 @@ func (s *PDFService) GenerateTasksReportPDF(report *TasksReportResponse) ([]byte
 	pdf.SetY(-25)
 	pdf.SetFont("Arial", "I", 9)
 	pdf.SetTextColor(128, 128, 128)
-	pdf.Cell(0, 10, fmt.Sprintf("Casera - Tasks Report for %s", report.ResidenceName))
+	pdf.Cell(0, 10, fmt.Sprintf("honeyDue - Tasks Report for %s", report.ResidenceName))
 	pdf.Ln(5)
 	pdf.Cell(0, 10, fmt.Sprintf("Generated on %s", time.Now().UTC().Format("2006-01-02 15:04:05 UTC")))