Fix JSON re-export StackOverflow and dedupe enricher canonicalization.

Scope project-root discovery to the nearest module, skip call-chain refresh when source lacks machine classes, harden ConstantResolver cycle detection, and remove redundant trigger canonicalization passes.

Co-authored-by: Cursor <cursoragent@cursor.com>

state_machine_exporter/src/test/java/click/kamil/springstatemachineexporter/analysis/enricher/DispatcherExternalFalseMatchedTransitionsRegressionTest.java

@@ -77,6 +77,7 @@ class DispatcherExternalFalseMatchedTransitionsRegressionTest {
                 .metadata(CodebaseMetadata.builder().callChains(List.of(chain)).build())
                 .build();
 
+        new TriggerCanonicalizationEnricher().enrich(result, null, null);
         enricher.enrich(result, null, null);
 
         assertThat(result.getMetadata().getCallChains().get(0).getMatchedTransitions())