whiteboard microscopy on hard(795)/drop(430) specimens: FF slips at the 3-term sum (155), carry re-expands and defers (165 ✓); boards show live continuation-plan vs premature digit-commit at identical prefixes

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

scripts/probe_discount.py

@@ -27,6 +27,14 @@ OUT = Path(os.environ.get("LOOP_OUT",
     Path(__file__).resolve().parent.parent / "results-loop"))
 Q = "A shirt costs $80 and is on sale for 15% off. How much does it cost?"
 K, P = 2, 6
+TAG = "discount"
+if "--idx" in sys.argv:
+    import json
+    _i = int(sys.argv[sys.argv.index("--idx") + 1])
+    _star = {it["idx"]: it for it in json.load(open(OUT / "star_data.json"))
+             if it["split"] == "test"}
+    Q = _star[_i]["question"]
+    TAG = f"gsm{_i}"
 FF = "--ff" in sys.argv
 ADAPTER = OUT / ("adapter_carrycot_ff_e400.pt" if FF else "adapter_carrycot_e400.pt")
 
@@ -45,7 +53,7 @@ mask = torch.ones_like(ids)
 
 with torch.no_grad():
     gen = generate_carry_c(looper, adapter, tok, ids, mask, K, P,
-                           max_new_tokens=48, feedforward=FF)
+                           max_new_tokens=72, feedforward=FF)
 text = tok.decode(gen[0, ids.shape[1] + P:], skip_special_tokens=False)
 print("GENERATED:", repr(text), flush=True)
 
@@ -111,5 +119,5 @@ for i, lab in enumerate(poslab):
 torch.save({"question": Q, "k": K, "p": P, "generated": text,
             "band": band, "poslab": poslab, "table": table,
             "digit_probs": probs},
-           OUT / ("probe_discount_ff.pt" if FF else "probe_discount.pt"))
-print("\nsaved", OUT / ("probe_discount_ff.pt" if FF else "probe_discount.pt"))
+           OUT / (f"probe_{TAG}_ff.pt" if FF else f"probe_{TAG}.pt"))
+print("\nsaved", OUT / (f"probe_{TAG}_ff.pt" if FF else f"probe_{TAG}.pt"))