capacities (25.5a): @max(n) on a list field, and a full table is a failure

'@max(64) boxes: []Box' on a property's or a state's field is a promise: the grow path of a push to
that field (only the grow path, so nothing is paid until it doubles) checks it, and growing past n is
reported by the fence - 'PoolState.boxes grew past its @max(16) (it holds 16)' - counted under
count, said under warn, and under fail (a headless or dev build's default) the run ends with exit 87.
Mem.over("what") is the same for a package's own table: ludic.base's StrTable past its most
(sb_intern) and ludic.ui's memo past three quarters of MM_CAP no longer quietly copy per call. The
census counts overflows.

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

packages/ludic.base/text_intern.ludic

@@ -45,7 +45,10 @@ export function sb_intern(sb: StrBuf, tb: StrTable) -> string {
     slot = (slot + 1) & mask
   }
   let s = text_of(sb.b, sb.n)
-  if len(tb.ss) >= tb.most { return s }
+  if len(tb.ss) >= tb.most {
+    Mem.over("a StrTable past its most (sb_intern)")   # 25.5a: a full table is a failure, not a copy per call
+    return s
+  }
   push(tb.ss, s)
   tb.hs[slot] = h
   tb.at[slot] = len(tb.ss)