fix undefined in meta line: add device/scale/params to /api/custom response

experiments/demo_server.py

@@ -208,6 +208,9 @@ def run_custom(doc_text: str, pairs: list, seed: int) -> dict:
         "rows": rows,
         "keymap": {r["name"]: r["kid"] for r in store_rows},
         "filler_words": len(set(words)),
+        "device": DEVICE,
+        "scale": float(MODEL.blocks[0].mixer.cfg.addr_scale),
+        "params": sum(p.numel() for p in MODEL.parameters()),
         "ts": time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime()),
     }
 
@@ -456,7 +459,7 @@ $("runc").onclick=async()=>{$("runc").disabled=true;$("runc").textContent="readi
     new_value:i[2].value.trim()}}).filter(p=>p.name&&p.value);
   const d=await api("/api/custom",{text:$("doc").value,pairs,seed:(Math.random()*1e6)|0});
   if(d.error){alert(d.error);return}
-  $("meta").textContent=`capacity8k.pt · scale ${d.scale||96} · ${d.device} · run ${d.ts}`;
+  $("meta").textContent=`scale ${d.scale||96} · ${d.device||"cpu"} · run ${d.ts||""}`;
   stats($("stc"),d);
   $("qrt").innerHTML=`<tr><th>asked</th><th>the model answered</th><th>latest value</th><th></th></tr>`+
    d.rows.map(r=>`<tr><td><b>${esc(r.name)}</b></td>
@@ -483,7 +486,7 @@ function drawLatt(pts,sc){const c=$("latt"),x=c.getContext("2d");
 $("run").onclick=async()=>{$("run").disabled=true;$("run").textContent="streaming&hellip;";
  try{const d=await api("/api/store",{n_pairs:+$("np").value,filler:+$("fl").value,
   overwrite_frac:+$("ow").value/100,seed:(Math.random()*1e6)|0});
-  $("meta").textContent=`capacity8k.pt · scale ${d.scale} · ${d.params.toLocaleString()} params · ${d.device} · run ${d.ts}`;
+  $("meta").textContent=`scale ${d.scale} · ${d.params.toLocaleString()} params · ${d.device} · run ${d.ts}`;
   stats($("st"),d);drawLatt(d.addr_points,d.scale);
   $("qr").innerHTML=`<tr><th>key</th><th>model output</th><th>expected</th><th></th></tr>`+
    d.rows.map(r=>`<tr><td>${r.key}</td><td class="${r.ok?"y":"n"}">${r.pred}</td>`+