Thread context through link policy and symbolic enum expansion

Use machine event type and CodebaseContext for trusted valueOf widen checks and resolveLinkResolution, and apply context-aware enum type matching when expanding symbolic polymorphic placeholders.

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

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

@@ -74,6 +74,23 @@ class CallChainLinkPolicyTest {
                 trigger, "com.example.OrderEvent")).isFalse();
     }
 
+    @Test
+    void shouldResolveLinkWhenTrustedWidenPassesUsingMachineEventType() {
+        TriggerPoint trigger = TriggerPoint.builder()
+                .ambiguous(false)
+                .event("OrderEvent.valueOf(eventStr)")
+                .polymorphicEvents(List.of("com.example.OrderEvent.PAY", "com.example.OrderEvent.SHIP"))
+                .build();
+
+        assertThat(CallChainLinkPolicy.resolveLinkResolution(
+                trigger,
+                List.of(),
+                false,
+                "com.example.OrderEvent")).isEqualTo(LinkResolution.NO_MATCH);
+        assertThat(CallChainLinkPolicy.shouldFailClosedOnAmbiguousCallGraphWiden(
+                trigger, "com.example.OrderEvent")).isFalse();
+    }
+
     @Test
     void shouldNotTrustImportStylePolymorphicWidenWithoutPackage() {
         TriggerPoint trigger = TriggerPoint.builder()