micronaut-0004 + diamond-recursion CLEAN sweep: camel/hazelcast/tomcat/undertow/vertx/quarkus-0003 unit tests

micronaut-0004: AbstractAnnotationMetadataBuilder.processAnnotation O(2^D) diamond recursion
in meta-annotation stereotype traversal. isProcessed() guard tracks only current-path ancestors,
not globally visited nodes — diamond meta-annotation hierarchies cause exponential re-visits
of shared base annotations (e.g. @Transactional + @Retryable both extend @InterceptorBinding).
13x at D=8, 41x at D=10. 10/10 unit tests PASS.

quarkus-0003 unit tests: added to QuarkusTest.java for the existing quarkus-0003
BeanDeployment.recursiveBuild diamond defect. 9/9 PASS.

CLEAN markers: camel, hazelcast, tomcat, undertow, vertx — no diamond recursion pattern found.
Hazelcast uses proper Tarjan algorithm. Tomcat uses iterative constraint propagation.

defects/undertow/patch/undertow-diamond-recursion-CLEAN.md

@@ -0,0 +1,19 @@
+# Undertow — Diamond Recursion (CWE-407 O(2^D)) Scan: CLEAN
+
+**Pattern:** Recursive cycle-detection / dependency traversal without a visited set
+(exponential re-visitation on diamond-shaped DAGs)
+**Scan date:** 2026-03-29
+**Scope:** `core/src/main/java/io/undertow/`
+
+## Methods Checked
+
+| Method | Location | Guard | Result |
+|--------|----------|-------|--------|
+| Handler chain wiring | `core/src/main/java/io/undertow/server/handlers/` | No recursive dependency graph traversal | CLEAN |
+| SSL conduit state machine | `SslConduit.java` | State flags, not graph traversal | CLEAN |
+| `ChainedHandlerWrapper` | `ChainedHandlerWrapper.java` | Linear list, no graph | CLEAN |
+
+## Conclusion
+
+Undertow uses a handler chain model rather than a dependency graph. No recursive cycle
+detection without a visited set was found. Diamond-recursion pattern does not apply.