refactor(scripts): improve race condition detection in capture_race_state.gdb

- Replace hardcoded pointer checks with dynamic state tracking
- Add backtrace on pointer value changes
- Store initial do_work and next values on first execution
- Add newlines for better log readability
- Remove redundant backtrace on every worker removal

Author: schkovich

scripts/capture_race_state.gdb

@@ -1,23 +1,26 @@
 set $cycle = 1
+set $do_work = 0
+set $next = 0
 
 break async_context_base_remove_when_pending_worker
 commands
   silent
-  printf "[Cycle: %d] remove worker: %p\n", $cycle, worker
+  printf "\n[Cycle: %d] remove worker: %p\n", $cycle, worker
   printf "[INFO] Enter: %llu; Exit: %llu\n", timestamp_enter, timestamp_exit
   x/4wx worker
   set $worker = (async_when_pending_worker_t *)worker
   p *$worker
-  if ($worker->do_work != 0x1000a499)
-    printf "[ERROR] do_work changed from 0x1000a499 to %p!\n", $worker->do_work
+  if ($worker->do_work != $do_work)
+    printf "[ERROR] do_work changed from %p to %p!\n", $do_work, $worker->do_work
+    bt
   end
-  if ($worker->next != 0 && ($worker->next < 0x20000000 || $worker->next > 0x20042000))
-    printf "[WARNING] next pointer invalid: %p\n", $worker->next
+  if ($worker->next != $next)
+    printf "[ERROR] next pointer changed from %p to %p!\n", $next, $worker->next
+    bt
   end
   if ($worker->work_pending > 1)
     printf "[WARNING] work_pending invalid: %d\n", $worker->work_pending
   end
-  bt
   set $cycle = $cycle + 1
   continue
 end
@@ -26,11 +29,15 @@ break async_context_base_execute_once
 commands
   silent
   set $worker = (async_when_pending_worker_t *)self->when_pending_list
-  printf "[Cycle: %d] execute once: %p\n", $cycle, $worker
+  printf "\n[Cycle: %d] execute once: %p\n", $cycle, $worker
   printf "[INFO] Enter: %llu; Exit: %llu\n", timestamp_enter, timestamp_exit
   if $worker != 0
     x/4wx $worker
     p *$worker
+    if $do_work == 0 && $next == 0
+      set $do_work = $worker->do_work
+      set $next = $worker->next
+    end
   end
   continue
 end