🧪 test: add BDD exclusion tags and mark JWT scenarios as todo

- Add @flaky, @todo, @skip tags to BDD_TAGS.md
- Modify all feature test suites to exclude these tags
- Update test scripts to exclude tagged scenarios
- Mark all JWT scenarios with pending steps as @todo

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

features/jwt/jwt_test.go

@@ -24,6 +24,7 @@ func TestJWTBDD(t *testing.T) {
 			Strict:        true,
 			Randomize:     -1,
 			StopOnFailure: true,
+			Tags:          "~@flaky && ~@todo && ~@skip",
 		},
 	}