ludic.base: tb_reserve and imap_reserve size a table up front; HandlePool (a slot and a generation, nothing made after hd_pool_new, past its capacity a panic naming it); kept_push is the one declared grow, and every growth path left says its bound in @alloc_ok

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/ludic.base/ecs_table_remove.ludic

@@ -13,7 +13,7 @@ export function tb_remove<T>(tb: Table<T>, h: int) -> bool {
   let s = h & ECS_SLOT
   tb.slot_row[s] = -1
   tb.slot_gen[s] = (tb.slot_gen[s] + 1) & ECS_GEN
-  push(tb.free, s)
+  kept_push(tb.free, s)
   return true
 }