Correct FIFA17 SBC dispatch notifier lifecycle guard to post-exit invariant

openfut-hook/src/sbc_dispatch.rs

@@ -180,9 +180,15 @@ fn decide(input: DecisionInput) -> Result<Decision, Rejection> {
     if input.live_category_count != input.category_count {
         return Err(Rejection::ModelChanged);
     }
+    // The category-success notifier for this generation must have entered and
+    // fully returned before the SBC completion runs. On the pinned CardsDLL the
+    // completion fires immediately after the notifier unwinds (measured: notifier
+    // entries == exits == generation at completion), not nested inside it, so we
+    // bind both notifier counts to the current generation rather than requiring
+    // an in-flight notifier.
     if input.notifier_entries != generation
         || input.notifier_entries == 0
-        || input.notifier_exits.checked_add(1) != Some(input.notifier_entries)
+        || input.notifier_exits != generation
     {
         return Err(Rejection::NotifierNotCurrent);
     }
@@ -730,7 +736,7 @@ mod tests {
             live_category_count: 2,
             category_count: 2,
             notifier_entries: generation,
-            notifier_exits: generation - 1,
+            notifier_exits: generation,
             controller_matches: true,
             controller_model_matches: true,
             last_repaired_generation: generation - 1,
@@ -776,8 +782,16 @@ mod tests {
         input.status = None;
         assert_eq!(decide(input), Err(Rejection::StatusUnreadable));
 
+        // Notifier still in flight for this generation (has not returned) is rejected:
+        // on the pinned build the completion only runs after the notifier unwinds.
         let mut input = valid_input(1);
-        input.notifier_exits = 1;
+        input.notifier_exits = 0;
+        assert_eq!(decide(input), Err(Rejection::NotifierNotCurrent));
+
+        // A notifier count that does not match the current generation is rejected.
+        let mut input = valid_input(1);
+        input.notifier_entries = 2;
+        input.notifier_exits = 2;
         assert_eq!(decide(input), Err(Rejection::NotifierNotCurrent));
 
         let mut input = valid_input(1);