Add TinyHeap class mask and extend routing

core/hakmem_tiny_refill.inc.h

@@ -21,6 +21,7 @@
 #include "box/c7_meta_used_counter_box.h"
 #include "box/tiny_header_box.h"  // Header Box: Single Source of Truth for header operations
 #include "box/tiny_front_config_box.h"  // Phase 7-Step6-Fix: Config macros for dead code elimination
+#include "box/tiny_heap_env_box.h"  // TinyHeap front gate (C7 TinyHeapBox)
 #include "hakmem_tiny_integrity.h"
 #include "box/tiny_next_ptr_box.h"
 #include "tiny_region_id.h"   // For HEADER_MAGIC/HEADER_CLASS_MASK (prepare header before SLL push)
@@ -305,6 +306,11 @@ int sll_refill_small_from_ss(int class_idx, int max_take)
         return 0;
     }
 
+    // TinyHeap front で扱うクラスは TLS SLL を使わない（TinyHeapBox 内で完結）。
+    if (tiny_heap_class_route_enabled(class_idx)) {
+        return 0;
+    }
+
     HAK_CHECK_CLASS_IDX(class_idx, "sll_refill_small_from_ss");
     atomic_fetch_add(&g_integrity_check_class_bounds, 1);