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_contract_test.go

@@ -130,7 +130,7 @@ func extractKMPRoutes(t *testing.T) []routeKey {
 	t.Helper()
 
 	// KMP source directory relative to this test file
-	kmpDir := filepath.Join("..", "..", "..", "MyCribKMM", "composeApp", "src", "commonMain", "kotlin", "com", "example", "casera", "network")
+	kmpDir := filepath.Join("..", "..", "..", "HoneyDueKMM", "composeApp", "src", "commonMain", "kotlin", "com", "example", "honeydue", "network")
 
 	// Verify directory exists — skip in CI where KMP repo may not be checked out
 	info, err := os.Stat(kmpDir)