publish calculator_memorize n=2: card fields, family blurb

CARD_TASK / DEMO_PROMPTS (2-digit width) so the memorize bundle gets
the same demo gate and signpost card as the rest of the family, and
the card's family paragraph now names all four variants.  Published
2026-07-27 at the canonical geometry (its depth IS the fact-capacity
term, so unlike the n=3 trio it genuinely uses d_hidden=16384):
16 layers, 32.8GB — the fact table fills the FFN width the computing
variants leave empty.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: physicsrob

examples/calculator_memorize.py

@@ -94,6 +94,15 @@
 # parameters, ~12 GB fp32) — expressible only through the formulas above.
 MAX_SUPPORTED_DIGITS = 2
 
+# Model-card fields consumed by ``examples.compile`` when publishing this
+# example as a Hugging Face bundle.  Prompts stay within the 2-digit width.
+CARD_TASK = (
+    "a computation graph for integer arithmetic (`A op B` with `op` in `+ - *`) "
+    "that computes nothing: every answer is a memorized fact, looked up from "
+    "the operand pair"
+)
+DEMO_PROMPTS = ["12*34\n", "7+8\n", "10-99\n", "99*99\n"]
+
 
 def n_facts(max_digits: int) -> int:
     """One lane per possible expression: ``3 * 10^(2n)``."""