Scope implementation and transition capping to package-qualified types

When an interface simple name is ambiguous, resolve FQN implementation
lookups within the requested package only, and stop capping polymorphic
candidates to machine transitions by constant name across enum types.

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

state_machine_exporter/src/test/java/click/kamil/springstatemachineexporter/analysis/resolver/MachineEnumCanonicalizerTest.java

@@ -263,6 +263,16 @@ class MachineEnumCanonicalizerTest {
         assertThat(enriched.getPolymorphicEvents()).isNullOrEmpty();
     }
 
+    @Test
+    void shouldNotCapForeignPackageEnumConstantToMachineTransition() {
+        List<String> capped = MachineEnumCanonicalizer.capToConfiguredTransitionEvents(
+                List.of("b.OrderEvent.PAY"),
+                List.of("a.OrderEvent.PAY"),
+                "a.OrderEvent");
+
+        assertThat(capped).isEmpty();
+    }
+
     @Test
     void shouldValidateRawNameConsistencyForCanonicalHelpers() {
         assertThat(MachineEnumCanonicalizer.isRawNameConsistentWithFullIdentifier(

state_machine_exporter/src/test/java/click/kamil/springstatemachineexporter/ast/common/CodebaseContextTest.java

@@ -271,8 +271,8 @@ class CodebaseContextTest {
         assertThat(context.getImplementations("Service"))
                 .as("ambiguous simple interface name must not widen to arbitrary impls")
                 .isEmpty();
-        assertThat(context.getImplementations("a.Service")).contains("a.AServiceImpl");
-        assertThat(context.getImplementations("b.Service")).contains("b.BServiceImpl");
+        assertThat(context.getImplementations("a.Service")).containsExactly("a.AServiceImpl");
+        assertThat(context.getImplementations("b.Service")).containsExactly("b.BServiceImpl");
     }
 
     @Test