release: silence runtime logs and stabilize benches

- Fix HAKMEM_LOG gating to use  (numeric) so release builds compile out logs.
- Switch remaining prints to HAKMEM_LOG or guard with :
  - core/box/hak_core_init.inc.h (EVO sample warning, shutdown banner)
  - core/hakmem_config.c (config/feature prints)
  - core/hakmem.c (BigCache eviction prints)
  - core/hakmem_tiny_superslab.c (OOM, head init/expand, C7 init diagnostics)
  - core/hakmem_elo.c (init/evolution)
  - core/hakmem_batch.c (init/flush/stats)
  - core/hakmem_ace.c (33KB route diagnostics)
  - core/hakmem_ace_controller.c (ACE logs macro → no-op in release)
  - core/hakmem_site_rules.c (init banner)
  - core/box/hak_free_api.inc.h (unknown method error → release-gated)
- Rebuilt benches and verified quiet output for release:
  - bench_fixed_size_hakmem/system
  - bench_random_mixed_hakmem/system
  - bench_mid_large_mt_hakmem/system
  - bench_comprehensive_hakmem/system

Note: Kept debug logs available in debug builds and when explicitly toggled via env.

core/box/hak_core_init.inc.h

@@ -88,7 +88,7 @@ static void hak_init_impl(void) {
     if (evo_sample_str && atoi(evo_sample_str) > 0) {
         int freq = atoi(evo_sample_str);
         if (freq >= 64) {
-            fprintf(stderr, "[hakmem] Warning: HAKMEM_EVO_SAMPLE=%d too large, using 63\n", freq);
+            HAKMEM_LOG("Warning: HAKMEM_EVO_SAMPLE=%d too large, using 63\n", freq);
             freq = 63;
         }
         g_evo_sample_mask = (1ULL << freq) - 1;
@@ -313,7 +313,7 @@ void hak_shutdown(void) {
     hkm_ace_controller_destroy(&g_ace_controller);
 
     if (!g_bench_tiny_only) {
-        printf("[hakmem] Shutting down...\n");
+        HAKMEM_LOG("Shutting down...\n");
         hak_print_stats();
     }