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/integration/kmp_model_contract_test.go

@@ -260,7 +260,7 @@ var excludedSchemas = map[string]string{
 	"DocumentType":                       "Enum — KMP uses DocumentType enum class",
 	"NotificationType":                   "Enum — KMP uses String",
 	"ToggleFavoriteResponse":             "Simple message+bool, not worth a dedicated mapping",
-	"SharePackageResponse":               "Used for .casera file sharing, handled by SharedContractor",
+	"SharePackageResponse":               "Used for .honeydue file sharing, handled by SharedContractor",
 	"UnregisterDeviceRequest":            "Simple oneoff request",
 	"UpdateTaskCompletionRequest":        "Not yet used in KMP",
 	"UpgradeTriggerResponse":             "Shape differs from KMP UpgradeTriggerData",
@@ -507,8 +507,8 @@ var (
 func loadKMPModels(t *testing.T) map[string]kmpModel {
 	t.Helper()
 
-	modelsDir := filepath.Join("..", "..", "..", "MyCribKMM", "composeApp", "src", "commonMain",
-		"kotlin", "com", "example", "casera", "models")
+	modelsDir := filepath.Join("..", "..", "..", "HoneyDueKMM", "composeApp", "src", "commonMain",
+		"kotlin", "com", "example", "honeydue", "models")
 
 	info, err := os.Stat(modelsDir)
 	if os.IsNotExist(err) {