Fix error messages for consistency in ca.go and certdb.go

ca.go

@@ -462,7 +462,7 @@ func issueSingleCertificate(def CertificateDefinition, i int, n int) (bool, erro
 
 	// Check if the certificate is in database, fail if it is.
 	if caState.FindByName(def.Name, false) != nil {
-		return false, fmt.Errorf("certificate %s already exists and is valid.", def.Name)
+		return false, fmt.Errorf("certificate %s already exists and is valid", def.Name)
 	}
 
 	// Initialize Subject if not specified
@@ -634,7 +634,7 @@ Certificate generated:
 		// If saving CA state fails, we still return success for the certificate issuance
 		fmt.Printf("WARNING: %v\n", err)
 		fmt.Println("CA state not saved, but certificate issued and saved successfully.")
-		return true, fmt.Errorf("Error saving CA state: %v", err)
+		return true, fmt.Errorf("error saving CA state: %v", err)
 	}
 
 	return true, nil
@@ -655,12 +655,12 @@ func ProvisionCertificates(filePath string) error {
 	// Load certificates provisioning configuration from the file (HCL syntax)
 	err = certDefs.LoadFromFile(filePath)
 	if err != nil {
-		return fmt.Errorf("Error loading certificates file: %v", err)
+		return fmt.Errorf("error loading certificates file: %v", err)
 	}
 
 	// The certificate provisioning file must contain at least one certificate definition
 	if len(certDefs.Certificates) < 1 {
-		return fmt.Errorf("No certificates defined in %s", filePath)
+		return fmt.Errorf("no certificates defined in %s", filePath)
 	}
 
 	// We will be counting successes and errors

certdb.go

@@ -98,7 +98,7 @@ func SaveCAState() error {
 // UpdateCAStateAfterIssue updates the CA state JSON after issuing a certificate
 func (s *CAState) UpdateCAStateAfterIssue(serialType, name string, subject string, certType string, serialNumber any, validity time.Duration) error {
 	if s == nil {
-		return fmt.Errorf("CAState is nil in UpdateCAStateAfterIssue. This indicates a programming error.")
+		return fmt.Errorf("CAState is nil in UpdateCAStateAfterIssue. This indicates a programming error")
 	}
 	issued := time.Now().UTC().Format(time.RFC3339)
 	expires := time.Now().Add(validity).UTC().Format(time.RFC3339)
@@ -135,7 +135,7 @@ func (s *CAState) AddCertificate(name, subject, certType, issued, expires, seria
 // RevokeCertificate revokes a certificate by serial number and reason code, updates state, and saves to disk
 func (s *CAState) RevokeCertificate(serial string, reason int) error {
 	if s == nil {
-		return fmt.Errorf("CAState is nil in RevokeCertificate. This indicates a programming error.")
+		return fmt.Errorf("CAState is nil in RevokeCertificate. This indicates a programming error")
 	}
 	revoked := false
 	revokedAt := time.Now().UTC().Format(time.RFC3339)