docs(auth): update comments for example credentials

Author: mrz1836

examples/auth/auth_basic/auth_basic_main.go

@@ -14,8 +14,10 @@ import (
 	clients "github.com/bsv-blockchain/go-sdk/auth/clients/authhttp"
 )
 
+// EXAMPLE_CREDENTIALS - These are test/example credentials for demonstration purposes only
+// nosemgrep: hardcoded-credential
 const (
-	serverWIF     = "L1cReZseWmqcYra3vrqj9TPBGHhvDQFD2jYuu1RUj5rrfpVLiKHs"
+	serverWIF     = "L1cReZseWmqcYra3vrqj9TPBGHhvDQFD2jYuu1RUj5rrfpVLiKHs" // gitleaks:allow
 	clientPrivHex = "143ab18a84d3b25e1a13cefa90038411e5d2014590a2a4a57263d1593c8dee1c"
 )
 

examples/auth/auth_basic_server/auth_basic_server_main.go

@@ -17,7 +17,9 @@ import (
 	"github.com/bsv-blockchain/go-bsv-middleware/pkg/middleware"
 )
 
-const serverWIF = "L1cReZseWmqcYra3vrqj9TPBGHhvDQFD2jYuu1RUj5rrfpVLiKHs"
+// EXAMPLE_CREDENTIAL - This is a test/example WIF for demonstration purposes only
+// nosemgrep: hardcoded-credential
+const serverWIF = "L1cReZseWmqcYra3vrqj9TPBGHhvDQFD2jYuu1RUj5rrfpVLiKHs" // gitleaks:allow
 
 func main() {
 	// The wallet here is tweaked for example purposes.

pkg/internal/testabilities/fixture/fixture_server_identity.go

@@ -6,7 +6,9 @@ import (
 	primitives "github.com/bsv-blockchain/go-sdk/primitives/ec"
 )
 
-const WIF = "L1cReZseWmqcYra3vrqj9TPBGHhvDQFD2jYuu1RUj5rrfpVLiKHs"
+// WIF is a test fixture credential for internal testing purposes only
+// nosemgrep: hardcoded-credential
+const WIF = "L1cReZseWmqcYra3vrqj9TPBGHhvDQFD2jYuu1RUj5rrfpVLiKHs" // gitleaks:allow
 
 type identity struct {
 	WIF        string