Align enum rawName with fn-form labels during canonicalization.

Derive transition and state rawName from package-canonical fullIdentifier so JSON exports stay consistent when bare constants or mismatched short forms appear in source.

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

state_machine_exporter/src/main/java/click/kamil/springstatemachineexporter/analysis/resolver/MachineEnumCanonicalizer.java

@@ -180,10 +180,14 @@ public final class MachineEnumCanonicalizer {
         String canonical = canonicalizeLabel(
                 event.fullIdentifier() != null ? event.fullIdentifier() : event.rawName(),
                 enumTypeFqn);
-        if (canonical.equals(event.fullIdentifier())) {
+        String fnRaw = toFnForm(canonical, enumTypeFqn);
+        if (fnRaw == null) {
+            fnRaw = event.rawName();
+        }
+        if (canonical.equals(event.fullIdentifier()) && fnRaw.equals(event.rawName())) {
             return event;
         }
-        return Event.of(event.rawName(), canonical);
+        return Event.of(fnRaw, canonical);
     }
 
     static State canonicalizeState(State state, String enumTypeFqn) {
@@ -200,6 +204,11 @@ public final class MachineEnumCanonicalizer {
         if (isStringOrPrimitiveType(enumTypeFqn) && canonical.startsWith(enumTypeFqn + ".")) {
             String constant = canonical.substring(enumTypeFqn.length() + 1);
             raw = "\"" + constant + "\"";
+        } else {
+            String fnRaw = toFnForm(canonical, enumTypeFqn);
+            if (fnRaw != null) {
+                raw = fnRaw;
+            }
         }
         return State.of(raw, canonical);
     }
@@ -315,4 +324,25 @@ public final class MachineEnumCanonicalizer {
     private static String simpleName(String fqn) {
         return fqn.contains(".") ? fqn.substring(fqn.lastIndexOf('.') + 1) : fqn;
     }
+
+    /**
+     * Derives {@code EnumFormat.fn} display form ({@code OrderEvent.PAY}) from a package-canonical identifier.
+     */
+    static String toFnForm(String canonicalFqn, String enumTypeFqn) {
+        if (canonicalFqn == null || canonicalFqn.isBlank() || isStringOrPrimitiveType(enumTypeFqn)) {
+            return null;
+        }
+        if (canonicalFqn.startsWith("<") || canonicalFqn.startsWith("\"")) {
+            return null;
+        }
+        if (!canonicalFqn.contains(".")) {
+            return canonicalFqn;
+        }
+        int lastDot = canonicalFqn.lastIndexOf('.');
+        int prevDot = canonicalFqn.lastIndexOf('.', lastDot - 1);
+        if (prevDot > 0) {
+            return canonicalFqn.substring(prevDot + 1);
+        }
+        return simpleName(enumTypeFqn) + "." + canonicalFqn.substring(lastDot + 1);
+    }
 }