🧪 test: remove hardcoded @wip and update tag logic

- Remove @wip from default tag filters in all test suites
- Update features/bdd_test.go to support GODOG_TAGS override
- Move @wip tag from passing scenario to @todo scenario
- Maintain tag override functionality via GODOG_TAGS environment variable
- Update documentation to reflect new default behavior

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

features/config/config_test.go

@@ -17,7 +17,7 @@ func TestConfigBDD(t *testing.T) {
 	tags := os.Getenv("GODOG_TAGS")
 	if tags == "" {
 		// Default tags if not overridden
-		tags = "~@flaky && ~@todo && ~@skip && @wip"
+		tags = "~@flaky && ~@todo && ~@skip"
 	}
 
 	suite := godog.TestSuite{