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/link_stubs.c

@@ -1,5 +1,6 @@
 #include <stddef.h>
 #include <stdlib.h>
+#include <sys/types.h>
 
 // Weak, no-op stubs to satisfy link in configurations where
 // optional components are compiled out or gated by flags.
@@ -25,3 +26,11 @@ __attribute__((weak)) void pool_free(void* ptr) {
     // Fallback to free if Pool TLS not linked
     free(ptr);
 }
+
+// Pool TLS registry lookup stub (used by Front Gate classifier when POOL_TLS is enabled)
+__attribute__((weak)) int pool_reg_lookup(void* ptr, pid_t* tid_out, int* class_idx_out) {
+    (void)ptr; if (tid_out) *tid_out = 0; if (class_idx_out) *class_idx_out = -1; return 0;  // not found
+}
+
+// Memory profile print stub (bench_comprehensive references this symbol)
+__attribute__((weak)) void hak_tiny_print_memory_profile(void) {}